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Wu P, Li S, Yu X, Guo S, Gao L. Identification of long-chain acyl-CoA synthetase gene family reveals that SlLACS1 is essential for cuticular wax biosynthesis in tomato. Int J Biol Macromol 2024; 277:134438. [PMID: 39098676 DOI: 10.1016/j.ijbiomac.2024.134438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/22/2024] [Accepted: 08/01/2024] [Indexed: 08/06/2024]
Abstract
Long-chain acyl-CoA synthetases (LACSs), belonging to the acyl-activating enzyme superfamily, play crucial roles in lipid biosynthesis and fatty acid catabolism. Here, we identified 11 LACS genes in the tomato reference genome, and these genes were clustered into six subfamilies. Gene structure and conserved motif analyses indicated that LACSs from the same subfamily shared conserved gene and protein structures. Expression analysis revealed that SlLACS1 was highly expressed in the outer epidermis of tomato fruits and leaves. Subcellular localization assay results showed that SlLACS1 was located in the endoplasmic reticulum. Compared with wild-type plants, the wax content on leaves and fruits decreased by 22.5-34.2 % in SlLACS1 knockout lines, confirming that SlLACS1 was involved in wax biosynthesis in both leaves and fruits. Water loss, chlorophyll extraction, water-deficit, and toluidine blue assays suggested that cuticle permeability was elevated in SlLACS1 knockout lines, resulting in reduction in both drought stress resistance and fruit shelf-life. Overall, our analysis of the LACSs in tomato, coupled with investigations of SlLACS1 function, yielded a deeper understanding of the evolutionary patterns of LACS members and revealed the involvement of SlLACS1 in wax accumulation contribute to drought resistance and extended fruit shelf-life in tomato.
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Affiliation(s)
- Pan Wu
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
| | - Shan Li
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
| | - Xiaofen Yu
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
| | - Sumin Guo
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
| | - Lei Gao
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Hubei Hongshan Laboratory, Wuhan 430070, China.
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2
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Zhang Z, Mistry D, Jetter R. Micromorphological and Chemical Characterization of Drimys winteri Leaf Surfaces: The Secondary Alcohols Forming Epicuticular Wax Crystals Are Accompanied by Alkanediol, Alkanetriol and Ketol Derivatives. PLANT & CELL PHYSIOLOGY 2024; 65:1245-1260. [PMID: 38757823 PMCID: PMC11369817 DOI: 10.1093/pcp/pcae053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 04/22/2024] [Accepted: 05/14/2024] [Indexed: 05/18/2024]
Abstract
The cuticle is a hydrophobic coating of most aerial plant surfaces crucial for limiting non-stomatal water loss. Plant cuticles consist of the lipid polyester cutin and associated waxes with compositions varying widely between plant species and organs. Here, we aimed to provide a comparative analysis of the dark-glossy adaxial and pale-glaucous abaxial sides of Drimys winteri (Winteraceae) leaves. Scanning electron microscopy showed nanotubular wax crystals lining the entire abaxial side of the leaf (including stomatal pores), while the adaxial side had patches of mixed platelet/tubule crystals and smooth areas between them. Consecutive treatments for wax removal and cutin depolymerization revealed that the waxes were deposited on a cutin network with micron-scale cavities across the entire abaxial surface including the stomata pores, and on a microscopically smooth cutin surface on the adaxial side of the leaf. Gas chromatography coupled to mass spectrometry and flame ionization detection showed that the wax mixtures on both sides of the leaf were complex mixtures of very-long-chain compounds dominated by the secondary alcohol nonacosan-10-ol and alkanediols with one hydroxyl on C-10. It is therefore very likely that the characteristic tubular wax crystals of both leaf sides are formed by these alcohols and diols. Further secondary alcohols and alkanediols, as well as ketols and alkanetriols with one functional group on C-10, were identified based on mass spectral fragmentation patterns. The similarities between all these mid-chain-functionalized compounds suggest that they are derived from nonacosan-10-ol via regio-specific hydroxylation reactions, likely catalyzed by three P450-dependent monooxygenases with different regio-specificities.
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Affiliation(s)
- Zhonghang Zhang
- Department of Botany, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
| | - Dwiti Mistry
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
| | - Reinhard Jetter
- Department of Botany, University of British Columbia, 6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
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3
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Miao R, Légeret B, Cuine S, Burlacot A, Lindblad P, Li-Beisson Y, Beisson F, Peltier G. Absence of alka(e)nes triggers profound remodeling of glycerolipid and carotenoid composition in cyanobacteria membrane. PLANT PHYSIOLOGY 2024; 196:397-408. [PMID: 38850059 PMCID: PMC11376386 DOI: 10.1093/plphys/kiae319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 04/25/2024] [Accepted: 04/29/2024] [Indexed: 06/09/2024]
Abstract
Alka(e)nes are produced by many living organisms and exhibit diverse physiological roles, reflecting a high functional versatility. Alka(e)nes serve as waterproof wax in plants, communicating pheromones for insects, and microbial signaling molecules in some bacteria. Although alka(e)nes have been found in cyanobacteria and algal chloroplasts, their importance for photosynthetic membranes has remained elusive. In this study, we investigated the consequences of the absence of alka(e)nes on membrane lipid composition and photosynthesis using the cyanobacterium Synechocystis PCC6803 as a model organism. By following the dynamics of membrane lipids and the photosynthetic performance in strains defected and altered in alka(e)ne biosynthesis, we show that drastic changes in the glycerolipid contents occur in the absence of alka(e)nes, including a decrease in the membrane carotenoid content, a decrease in some digalactosyldiacylglycerol (DGDG) species and a parallel increase in monogalactosyldiacylglycerol (MGDG) species. These changes are associated with a higher susceptibility of photosynthesis and growth to high light in alka(e)ne-deficient strains. All these phenotypes are reversed by expressing an algal photoenzyme producing alka(e)nes from fatty acids. Therefore, alkenes, despite their low abundance, are an essential component of the lipid composition of membranes. The profound remodeling of lipid composition that results from their absence suggests that they play an important role in one or more membrane properties in cyanobacteria. Moreover, the lipid compensatory mechanism observed is not sufficient to restore normal functioning of the photosynthetic membranes, particularly under high-light intensity. We conclude that alka(e)nes play a crucial role in maintaining the lipid homeostasis of thylakoid membranes, thereby contributing to the proper functioning of photosynthesis, particularly under elevated light intensities.
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Affiliation(s)
- Rui Miao
- Institut de Biosciences et Biotechnologies, Aix Marseille Univ, CEA, CNRS, BIAM, Saint Paul-Lez-Durance, F-13115, France
- Microbial chemistry, Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden
| | - Bertrand Légeret
- Institut de Biosciences et Biotechnologies, Aix Marseille Univ, CEA, CNRS, BIAM, Saint Paul-Lez-Durance, F-13115, France
| | - Stéphan Cuine
- Institut de Biosciences et Biotechnologies, Aix Marseille Univ, CEA, CNRS, BIAM, Saint Paul-Lez-Durance, F-13115, France
| | - Adrien Burlacot
- Institut de Biosciences et Biotechnologies, Aix Marseille Univ, CEA, CNRS, BIAM, Saint Paul-Lez-Durance, F-13115, France
- Carnegie Institution for Science, Department of Plant Biology, 260 Panama Street, Stanford, CA 94305, USA
| | - Peter Lindblad
- Microbial chemistry, Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden
| | - Yonghua Li-Beisson
- Institut de Biosciences et Biotechnologies, Aix Marseille Univ, CEA, CNRS, BIAM, Saint Paul-Lez-Durance, F-13115, France
| | - Fred Beisson
- Institut de Biosciences et Biotechnologies, Aix Marseille Univ, CEA, CNRS, BIAM, Saint Paul-Lez-Durance, F-13115, France
| | - Gilles Peltier
- Institut de Biosciences et Biotechnologies, Aix Marseille Univ, CEA, CNRS, BIAM, Saint Paul-Lez-Durance, F-13115, France
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He S, Gao J, Li B, Luo Z, Liu P, Xu X, Wu M, Yang J, He X, Wang Z. NtWIN1 regulates the biosynthesis of scopoletin and chlorogenic acid by targeting NtF6'H1 and NtCCoAMT genes in Nicotiana tabacum. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108937. [PMID: 39018774 DOI: 10.1016/j.plaphy.2024.108937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 07/10/2024] [Accepted: 07/12/2024] [Indexed: 07/19/2024]
Abstract
Scopoletin and chlorogenic acid (CGA) are important polyphenols that regulate plant growth, development, and stress resistance. The ERF transcription factor WAX INDUCER1 (WIN1) promotes the biosynthesis of cutin, suberine, and wax. However, its full roles in regulating the accumulation of plant secondary metabolites still remain to be further clarified. In this study, NtWIN1 gene encoding a SHINE-type AP2/ERF transcription factor of the Va subgroup was identified from N. tabacum. NtWIN1 showed high expression levels in tobacco stems, sepals, and pistils. Overexpression (OE) and knock-out of NtWIN1 showed that it promoted the accumulation of total polyphenols and altered their composition. Compare to that of WT plants, the CGA contents significantly increased by 25%-50% in the leaves, flowers, and capsules of OE lines, while the scopoletin contents in the OE plants significantly decreased by 30%-67%. In contrast, the CGA contents in ntwin1 lines reduced by 23%-26%, and the scopoletin contents in ntwin1 increased by 38%-75% compare to that of WT plants. Chromatin immunoprecipitation and Dual-Luc transcription activation assays showed that NtWIN1 could bind to the promoters of NtF6'H1 and NtCCoAMT, thereby modulating their expression. The scopoletin content in ntwin1/ntf6'h1 double mutant was significantly lower than that in ntwin1 and WT plants, but showed no significant differences with that in ntf6'h1 mutant, further indicating that the inhibition of NtWIN1 on scopoletin accumulation depends on the activity of NtF6'H1. Our study illustrates the new roles of NtWIN1, and provides a possible target for regulating the synthesis of polyphenols in tobacco.
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Affiliation(s)
- Shun He
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Junping Gao
- Technology Center, China Tobacco Hunan Industrial Co., Ltd., Changsha, 410007, China
| | - Bingyu Li
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Zhaopeng Luo
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Pingping Liu
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Xin Xu
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Mingzhu Wu
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Jun Yang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China
| | - Xinxi He
- Technology Center, China Tobacco Hunan Industrial Co., Ltd., Changsha, 410007, China.
| | - Zhong Wang
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, 450001, China.
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5
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Moreira CJS, Escórcio R, Bento A, Bjornson M, Herold L, Tomé AS, Martins C, Fanuel M, Martins I, Bakan B, Zipfel C, Silva Pereira C. Cutin-derived oligomers induce hallmark plant immune responses. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:5146-5161. [PMID: 38824407 PMCID: PMC11350081 DOI: 10.1093/jxb/erae254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 05/31/2024] [Indexed: 06/03/2024]
Abstract
The cuticle constitutes the outermost defensive barrier of most land plants. It comprises a polymeric matrix-cutin, surrounded by soluble waxes. Moreover, the cuticle constitutes the first line of defense against pathogen invasion, while also protecting the plant from many abiotic stresses. Aliphatic monomers in cutin have been suggested to act as immune elicitors in plants. This study analyses the potential of cutin oligomers to activate rapid signaling outputs reminiscent of pattern-triggered immunity in the model plant Arabidopsis. Cutin oligomeric mixtures led to Ca2+ influx and mitogen-activated protein kinase activation. Comparable responses were measured for cutin, which was also able to induce a reactive oxygen species burst. Furthermore, cutin oligomer treatment resulted in a unique transcriptional reprogramming profile, having many archetypal features of pattern-triggered immunity. Targeted spectroscopic and spectrometric analyses of the cutin oligomers suggest that the elicitor compounds consist mostly of two up to three 10,16-dihydroxyhexadecanoic acid monomers linked together through ester bonds. This study demonstrates that cutin breakdown products can act as inducers of early plant immune responses. Further investigation is needed to understand how cutin breakdowns are perceived and to explore their potential use in agriculture.
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Affiliation(s)
- Carlos J S Moreira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
- Institute of Plant and Microbial Biology, Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland
| | - Rita Escórcio
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Artur Bento
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Marta Bjornson
- Institute of Plant and Microbial Biology, Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland
| | - Laura Herold
- Institute of Plant and Microbial Biology, Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland
| | - Ana S Tomé
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Celso Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Mathieu Fanuel
- PROBE research infrastructure, BIBS Facility, INRAE, Nantes, France
- Research Unit Biopolymers Interaction Assemblies, INRAE, Nantes, France
| | - Isabel Martins
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Bénédicte Bakan
- Research Unit Biopolymers Interaction Assemblies, INRAE, Nantes, France
| | - Cyril Zipfel
- Institute of Plant and Microbial Biology, Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland
- The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Cristina Silva Pereira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
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6
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Zhang J, Li X, Zhang C, Liu X, Wang CL. PpyLTP36 and PpyLTP39 are involved in the transmembrane transport of cuticular wax and are associated with the occurrence of pear fruit russeting. Int J Biol Macromol 2024; 278:134771. [PMID: 39151864 DOI: 10.1016/j.ijbiomac.2024.134771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 08/08/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
Non-specific lipid-transfer proteins (nsLTPs) are a group of small, cysteine-rich proteins that are involved in the transport of cuticular wax and other lipid compounds. Accumulating evidence suggests that dynamic changes in cuticular waxes are strongly associated with fruit russeting, an undesirable visual quality that negatively affects consumer appeal in pears. Currently, the regulatory role of nsLTPs in cuticular wax deposition and pear fruit skin russeting remains unclear. Here, we characterized the variations of cuticular waxes in non-treated (russeted) and preharvest bagging treated (non-russeted) pear fruits throughout fruit development and confirmed that the contents of cuticular waxes were significantly negatively correlated with the occurrence of pear fruit russeting. Based on RNA-Sequencing (RNA-Seq) and quantitative real-time PCR (qRT-PCR) analyses, two nsLTP genes (PpyLTP36 and PpyLTP39) were identified, which exhibited high expression levels in non-russeted pear fruit skins and were significantly repressed during fruit skin russeting. Subcellular localization analysis demonstrated that PpyLTP36 and PpyLTP39 were localized to the plasma membrane (PM). Further, transient Virus-Induced Gene Silencing (VIGS) analyses of PpyLTP36 and PpyLTP39 in pear fruits significantly reduced cuticular wax deposition. In conclusion, PpyLTP36 and PpyLTP39 are involved in the transmembrane transport of cuticular wax and are associated with pear fruit skin russeting.
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Affiliation(s)
- Jing Zhang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou 225009, People's Republic of China
| | - Xi Li
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou 225009, People's Republic of China
| | - Chen Zhang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou 225009, People's Republic of China
| | - Xiao Liu
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou 225009, People's Republic of China
| | - Chun-Lei Wang
- College of Horticulture and Landscape Architecture, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, 48 Wenhui East Road, Yangzhou 225009, People's Republic of China.
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7
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Kuruparan A, Gao P, Soolanayakanahally R, Kumar S, Gonzales-Vigil E. β-diketone accumulation in response to drought stress is weakened in modern bread wheat varieties ( Triticum aestivum L.). FRONTIERS IN PLANT SCIENCE 2024; 15:1401135. [PMID: 39184577 PMCID: PMC11341480 DOI: 10.3389/fpls.2024.1401135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 07/15/2024] [Indexed: 08/27/2024]
Abstract
Cuticular waxes coating leaf surfaces can help plants tolerate drought events by reducing non-stomatal water loss. Despite their role in drought tolerance, little is known about how cuticular wax composition has changed during breeding in Canadian bread wheat (Triticum aestivum L.) varieties. To fill in this gap, flag leaves of the Canadian Heritage Bread Wheat Panel, which include 30 varieties released between 1842 and 2018, were surveyed to determine if and how cuticular wax composition in wheat has changed at two breeding ecozones over this period. Following this, a subset of varieties was subjected to drought conditions to compare their responses. As expected, modern varieties outperformed old varieties with a significantly larger head length and reaching maturity earlier. Yet, when challenged with drought, old varieties were able to significantly increase the accumulation of β-diketones to a higher extent than modern varieties. Furthermore, RNAseq was performed on the flag leaf of four modern varieties to identify potential markers that could be used for selection of higher accumulation of cuticular waxes. This analysis revealed that the W1 locus is a good candidate for selecting higher accumulation of β-diketones. These findings indicate that the variation in cuticular waxes upon drought could be further incorporated in breeding of future bread wheat varieties.
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Affiliation(s)
- Aswini Kuruparan
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, Canada
- Saskatoon Research and Development Centre, Agriculture and Agri-Food Canada, Saskatoon, SK, Canada
| | - Peng Gao
- Saskatoon Research and Development Centre, Agriculture and Agri-Food Canada, Saskatoon, SK, Canada
| | - Raju Soolanayakanahally
- Saskatoon Research and Development Centre, Agriculture and Agri-Food Canada, Saskatoon, SK, Canada
| | - Santosh Kumar
- Brandon Research and Development Centre, Agriculture and Agri-Food Canada, Brandon, MB, Canada
| | - Eliana Gonzales-Vigil
- Department of Cell and Systems Biology, University of Toronto, Toronto, ON, Canada
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON, Canada
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Liu Z, Wang P, Goh T, Nakajima K, Kang BH. Mucilage secretion from the root cap requires the NAC family transcription factor BEARSKIN2. PLANT PHYSIOLOGY 2024:kiae402. [PMID: 39116186 DOI: 10.1093/plphys/kiae402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 06/30/2024] [Indexed: 08/10/2024]
Abstract
The root cap secretes mucilage and sheds border cells (border-like cells, BLCs) in Arabidopsis (Arabidopsis thaliana). These mucilage and root cap-derived cells form a defensive barrier against soil pathogens. BEARSKIN1 (BRN1) and BRN2 are 2 homologous NAM, ATAF1/2, and CUC2 (NAC) family transcription factors of Arabidopsis, and mucilage secretion is inhibited in the brn1/2 double mutant. BRN1 and BRN2 are also involved in the expression of a pectin-digesting enzyme, POLYGALACTURONASE (RCPG), that facilitates BLC shedding. To further explore the connection between mucilage secretion and BLC shedding, we examined mucilage production in Arabidopsis lines displaying altered BLC detachment. Inactivation of BRN2 blocked mucilage synthesis and secretion, while inactivation of BRN1 and RCPG did not. Interestingly, RCPG sorted into mucilage-carrying vesicles budding from the Golgi and inhibited mucilage secretion in brn2-delayed BLC detachment. The root cap of a germinating seedling is initially covered with a cuticle, which is replaced by mucilage from BLCs as the seedling begins to shed these cells. Ectopic expression of RCPG in germinating seedlings caused early BLC formation and accelerated the cuticle-to-mucilage transition, indicating that RCPG expression and mucilage secretion are co-regulated. Furthermore, brn2 roots exhibited slower growth and increased cell death when subjected to salt or osmotic stress. Our research suggests that BRN2-mediated mucilage secretion contributes to BLC release to build an extracellular defense zone surrounding the root cap.
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Affiliation(s)
- Zhongyuan Liu
- School of Life Sciences, Centre for Cell and Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Pengfei Wang
- School of Life Sciences, Centre for Cell and Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Tatsuaki Goh
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Keiji Nakajima
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Byung-Ho Kang
- School of Life Sciences, Centre for Cell and Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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9
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Wu W, Wang L, Huang W, Zhang X, Li Y, Guo W. A high-quality genome assembly reveals adaptations underlying glossy, wax-coated leaves in the heat-tolerant wild raspberry Rubus leucanthus. DNA Res 2024; 31:dsae024. [PMID: 39101533 PMCID: PMC11347754 DOI: 10.1093/dnares/dsae024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 07/26/2024] [Accepted: 08/02/2024] [Indexed: 08/06/2024] Open
Abstract
With glossy, wax-coated leaves, Rubus leucanthus is one of the few heat-tolerant wild raspberry trees. To ascertain the underlying mechanism of heat tolerance, we generated a high-quality genome assembly with a genome size of 230.9 Mb and 24,918 protein-coding genes. Significantly expanded gene families were enriched in the flavonoid biosynthesis pathway and the circadian rhythm-plant pathway, enabling survival in subtropical areas by accumulating protective flavonoids and modifying photoperiodic responses. In contrast, plant-pathogen interaction and MAPK signaling involved in response to pathogens were significantly contracted. The well-known heat response elements (HSP70, HSP90, and HSFs) were reduced in R. leucanthus compared to two other heat-intolerant species, R. chingii and R. occidentalis, with transcriptome profiles further demonstrating their dispensable roles in heat stress response. At the same time, three significantly positively selected genes in the pathway of cuticular wax biosynthesis were identified, and may contribute to the glossy, wax-coated leaves of R. leucanthus. The thick, leathery, waxy leaves protect R. leucanthus against pathogens and herbivores, supported by the reduced R gene repertoire in R. leucanthus (355) compared to R. chingii (376) and R. occidentalis (449). Our study provides some insights into adaptive divergence between R. leucanthus and other raspberry species on heat tolerance.
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Affiliation(s)
- Wei Wu
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Longyuan Wang
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Weicheng Huang
- Plant Science Center, South China Botanical Garden, Chinese Academy of Science, , Guangzhou, 510650, Guangzhou, China
| | - Xianzhi Zhang
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Yongquan Li
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Wei Guo
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
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10
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Kumachova TK, Voronkov AS. Cutinsomes of Malus Mill. (Rosaceae) leaf and pericarp: genesis, localization, and transport. Micron 2024; 183:103657. [PMID: 38735105 DOI: 10.1016/j.micron.2024.103657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/04/2024] [Accepted: 05/06/2024] [Indexed: 05/14/2024]
Abstract
New data were obtained on specific bionanostructures, cutinsomes, which are involved in the formation of cuticles on the surface of leaf blades and pericarp of Malus domestica Borkh (Malus Mill., Rosaceae)introduced to the mountains at the altitudes of 1200 and 1700 m above sea level. Cutinsomes, which are electron-dense structures of spherical shape, have been identified by transmission electron microscopy. It was demonstrated that plastids can be involved in the synthesis of their constituent nanocomponents. The greatest number of nanoparticles was observed in the granal thylakoid lumen of the chloroplasts in palisade mesophyll cells and pericarp hypodermal cells. The transmembrane transport of cutinsomes into the cell wall cuticle proper by exocytosis has been visualized for the first time. The plasma membrane is directly involved in the excretion of nanostructures from the cell. Nanoparticles of cutinsomes in the form of necklace-like formations line up in a chain near cell walls, merge into larger conglomerates and are loaded into plasmalemma invaginations, and then, in membrane packing, they move into the cuticle, which covers both outer and inner cell walls of external tissues. The original materials obtained by us supplement the ideas about the non-enzymatic synthesis of cuticle components available in the literature and expand the cell compartment geography involved in this process.
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Affiliation(s)
- Tamara Kh Kumachova
- Russian State Agrarian University - Moscow Timiryazev Agricultural Academy, Timiryazevskaya 49, Moscow 127550, Russia
| | - Alexander S Voronkov
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya 35, Moscow 127276, Russia.
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Zhang S, Xiao Z. Pesticide loaded nanohydrogel based on attapulgite and gelatin with improved foliar adhesion. PEST MANAGEMENT SCIENCE 2024; 80:3884-3892. [PMID: 38511870 DOI: 10.1002/ps.8091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 02/27/2024] [Accepted: 03/19/2024] [Indexed: 03/22/2024]
Abstract
BACKGROUNDS Pesticides have been widely applied to promote plant growth due to their high insecticidal efficiency. However, most pesticides easily slip from the leaf surface due to the low foliar adhesion, leading to significant damage to the environment and human health. Increasing foliar adhesion of pesticides has been a major challenge. Nanomaterial technology, which can deliver pesticide active ingredients, offers a new opportunity to increase pesticides efficacy with higher foliar adhesion. RESULTS In this study, we prepared the pesticide loaded nanohydrogel ALP@Ge-g-P(AA-co-AM)/ATP by grafting attapulgite and gelatin onto P(AA-co-AM), and loading the pesticide alphacypermethrin synchronously via the emulsion solvent evaporation method. The size of the new nanohydrogel was 20.5 nm and the pesticide loading capacity was 21.5%. Compared to P(AA-co-AM), the water absorbency of Ge-g-P(AA-co-AM)/ATP increased by 54.3% in 120 min, while the water retention increased from 4.27% to 38.7% after 48 h. Washout experiments and contact angle results suggested that the nanohydrogel, with a contact angle of 44.8° indicating good wettability, can resist rain flush and increase foliar adhesion naturally. CONCLUSIONS Overall, the preparation of pesticide loaded nanohydrogel is simple. Experiments demonstrated the pesticide loaded nanohydrogel has high efficiency and strong foliar adhesion. This makes it a promising candidate for spraying application and reducing pollution levels. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Sijia Zhang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, P. R. China
| | - Zhenggang Xiao
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, P. R. China
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12
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Kaplan Y, Wang Y, Manasherova E, Cohen H, Ginzberg I. Metabolic and gene-expression analyses reveal developmental dynamics of cutin deposition in pomegranate fruit grown under different environmental conditions. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 215:108991. [PMID: 39106765 DOI: 10.1016/j.plaphy.2024.108991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 07/23/2024] [Accepted: 07/30/2024] [Indexed: 08/09/2024]
Abstract
The chemical and transcriptional changes in the cuticle of pomegranate (Punica granatum L.) fruit grown under different environmental conditions were studied. We collected fruit from three orchards located in different regions in Israel, each with a distinct microclimate. Fruit were collected at six phenological stages, and cutin monomers in the fruit cuticle were profiled by gas chromatography-mass spectrometry (GC-MS), along with qPCR transcript-expression analyses of selected cutin-related genes. While fruit phenotypes were comparable along development in all three orchards, principal component analyses of cutin monomer profiles suggested clear separation between cuticle samples of young green fruit to those of maturing fruit. Moreover, total cutin contents in green fruit were lower in the orchard characterized by a hot and dry climate compared to orchards with moderate temperatures. The variances detected in total cutin contents between orchards corresponded well with the expression patterns of BODYGUARD, a key biosynthetic gene operating in the cutin biosynthetic pathway. Based on our extraction protocols, we found that the cutin polyester that builds the pomegranate fruit cuticle accumulates some levels of gallic acid-the precursor of punicalagin, a well-known potent antioxidant metabolite in pomegranate fruit. The gallic acid was also one of the predominant metabolites contributing to the variability between developmental stages and orchards, and its accumulation levels were opposite to the expression patterns of the UGT73AL1 gene which glycosylates gallic acid to synthesize punicalagin. To the best of our knowledge, this is the first detailed composition of the cutin polyester that forms the pomegranate fruit cuticle.
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Affiliation(s)
- Yulia Kaplan
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, P.O. Box 15159, Rishon LeZion, 7505101, Israel.
| | - Yuying Wang
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, P.O. Box 15159, Rishon LeZion, 7505101, Israel.
| | - Ekaterina Manasherova
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, P.O. Box 15159, Rishon LeZion, 7505101, Israel.
| | - Hagai Cohen
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, P.O. Box 15159, Rishon LeZion, 7505101, Israel.
| | - Idit Ginzberg
- Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Volcani Institute, 68 HaMaccabim Road, P.O. Box 15159, Rishon LeZion, 7505101, Israel.
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Bhattacharya R, Mitra A. Compositional analysis of tuberose floral cuticle sheds light on scent volatile emission and cuticle deposition. Nat Prod Res 2024:1-7. [PMID: 39069744 DOI: 10.1080/14786419.2024.2385696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 07/10/2024] [Accepted: 07/21/2024] [Indexed: 07/30/2024]
Abstract
The plant cuticle acts as a vital shield, safeguarding against environmental and biological stresses. Tuberose flowers, specifically the 'Calcutta Single' and 'Calcutta Double' cultivars of Agave amica (syn. Polianthes tuberosa), are highly prized in India for their aromatic and aesthetic appeal. This research examines the tuberose floral cuticle using GC-MS to identify key chemical components and their characteristics. The analysis uncovered six major chemical classes viz. fatty acids, fatty alcohols, esters, alkanes, alkenes, and aldehydes as the primary constituents of the cuticular wax. Fatty acids and fatty alcohols are dominant in both cultivars, with 'Calcutta Single' displaying a higher ester content than 'Calcutta Double'. This study represents the inaugural in-depth exploration of cuticular wax in tuberose flowers, presenting a comparative investigation into these prominent cultivars.
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Affiliation(s)
- Raktim Bhattacharya
- Natural Product Biotechnology Group, Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Adinpunya Mitra
- Natural Product Biotechnology Group, Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur, India
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14
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Chen M, Wang X, Ye Y, Li X, Li S, Li M, Jiang F, Zhang C. Combined metabolomics and transcriptomics reveal the secondary metabolite networks in different growth stages of Bletilla striata (Thunb.) Reichb.f. PLoS One 2024; 19:e0307260. [PMID: 39046970 PMCID: PMC11290943 DOI: 10.1371/journal.pone.0307260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 07/02/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Bletilla striata (Thunb.) Reichb.f. (B. striata) is a traditional Chinese medicinal herb. B. striata polysaccharides (BSP), stilbenes and 2-isobutyl malic acid glucosoxy-benzyl ester compounds are the main active ingredients in B. striata. However, there is limited report on the changes of medicinal components and their biosynthesis regulation mechanisms in the tubers of B. striata at different stages. METHOD The tubers of B. striata were collected during the flowering period, fruiting period, and harvest period to determine the total polysaccharide content using the phenol sulfuric acid method. The changes in secondary metabolites in the tubers at these stages were analyzed by ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS), and transcriptomics was conducted for further exploration of their biosynthetic pathways. RESULT The BSP content gradually increases from the flowering period to the fruiting period as the tubers develop, reaching its peak, but subsequently decreases at harvest time, which may be associated with the germination of B. striata buds in later stage. A total of 294 compounds were identified in this study. Among them, a majority of the compounds, such as 2-isobutyl malate gluconoxy-benzyl ester, exhibited high content during the fruit stage, while stilbenes like coelonin, 3'-O-methylbatatasin III, and blestriarene A accumulated during the harvesting period. The transcriptome data also revealed a substantial number of differentially expressed genes at various stages, providing a partial explanation for the complex changes in metabolites. We observed a correspondence between the expression pattern of GDP-Man biosynthesis-related enzyme genes and cumulative changes in BSP. And identified a positive correlation between 9 transcription factors and genes associated with polysaccharide biosynthesis, while 5 transcription factors were positively correlated with accumulation of 2-isobutyl malate gluconoxy-benzyl ester compounds and 5 transcription factors exhibited negative correlated with stilbene accumulation. CONCLUSION It is imperative to determine the appropriate harvesting period based on the specific requirements of different active ingredients and the accumulation patterns of their metabolites. Considering the involvement of multiple transcription factors in the biosynthesis and accumulation of its active ingredients, a comprehensive investigation into the specific regulatory mechanisms that facilitate high-quality cultivation of B. striata is imperative.
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Affiliation(s)
- Man Chen
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xia Wang
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yueyu Ye
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaomei Li
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Shiqing Li
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Meiya Li
- Academy of Chinese Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fusheng Jiang
- College of Life Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chunchun Zhang
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
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15
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Hu H, Qiu K, Hao Q, He X, Qin L, Chen L, Yang C, Dai X, Liu H, Xu H, Guo H, Li J, Wu R, Feng J, Zhou Y, Han J, Xiao C, Wang X. Electromagnetic Field-Assisted Frozen Tissue Planarization Enhances MALDI-MSI in Plant Spatial Omics. Anal Chem 2024; 96:11809-11822. [PMID: 38975729 DOI: 10.1021/acs.analchem.4c01407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Plant samples with irregular morphology are challenging for longitudinal tissue sectioning. This has restricted the ability to gain insight into some plants using matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI). Herein, we develop a novel technique termed electromagnetic field-assisted frozen tissue planarization (EMFAFTP). This technique involves using a pair of adjustable electromagnets on both sides of a plant tissue. Under an optimized electromagnetic field strength, nondestructive planarization and regularization of the frozen tissue is induced, allowing the longitudinal tissue sectioning that favors subsequent molecular profiling by MALDI-MSI. As a proof of concept, flowers, leaves and roots with irregular morphology from six plant species are chosen to evaluate the performance of EMFAFTP for MALDI-MSI of secondary metabolites, amino acids, lipids, and proteins among others in the plant samples. The significantly enhanced MALDI-MSI capabilities of these endogenous molecules demonstrate the robustness of EMFAFTP and suggest it has the potential to become a standard technique for advancing MALDI-MSI into a new era of plant spatial omics.
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Affiliation(s)
- Hao Hu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Kaidi Qiu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Qichen Hao
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Xiaojia He
- The Administrative Center for China's Agenda 21, Beijing 100038, China
| | - Liang Qin
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Lulu Chen
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Chenyu Yang
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Xiaoyan Dai
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Haiqiang Liu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Hualei Xu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Hua Guo
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Jinrong Li
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Ran Wu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Jinchao Feng
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Yijun Zhou
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Jun Han
- Genome British Columbia Proteomics Centre, University of Victoria, Victoria, BC V8Z 7X8, Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Chunwang Xiao
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
| | - Xiaodong Wang
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics (Minzu University of China), State Ethnic Affairs Commission, Beijing 100081, China
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Beer F, Weinert CH, Wellmann J, Hillebrand S, Ley JP, Soukup ST, Kulling SE. Comprehensive metabolome characterization of leaves, internodes, and aerial roots of Vanilla planifolia by untargeted LC-MS and GC × GC-MS. PHYTOCHEMICAL ANALYSIS : PCA 2024. [PMID: 39034429 DOI: 10.1002/pca.3414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/07/2024] [Accepted: 06/17/2024] [Indexed: 07/23/2024]
Abstract
INTRODUCTION Untargeted metabolomics is a powerful tool that provides strategies for gaining a systematic understanding of quantitative changes in the levels of metabolites, especially when combining different metabolomic platforms. Vanilla is one of the world's most popular flavors originating from cured pods of the orchid Vanilla planifolia. However, only a few studies have investigated the metabolome of V. planifolia, and no LC-MS or GC-MS metabolomics studies with respect to leaves have been performed. OBJECTIVE The aim of the study was to comprehensively characterize the metabolome of different organs (leaves, internodes, and aerial roots) of V. planifolia. MATERIAL AND METHODS Characterization of the metabolome was achieved using two complementary platforms (GC × GC-MS, LC-QToF-MS), and metabolite identification was based on a comparison with in-house databases or curated external spectral libraries. RESULTS In total, 127 metabolites could be identified with high certainty (confidence level 1 or 2) including sugars, amino acids, fatty acids, organic acids, and amines/amides but also secondary metabolites such as vanillin-related metabolites, flavonoids, and terpenoids. Ninty-eight metabolites showed significantly different intensities between the plant organs. Most strikingly, aglycons of flavonoids and vanillin-related metabolites were elevated in aerial roots, whereas its O-glycoside forms tended to be higher in leaves and/or internodes. This suggests that the more bioactive aglycones may accumulate where preferably needed, e.g. for defense against pathogens. CONCLUSION The results derived from the study substantially expand the knowledge regarding the vanilla metabolome forming a valuable basis for more targeted investigations in future studies, e.g. towards an optimization of vanilla plant cultivation.
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Affiliation(s)
- Falco Beer
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| | - Christoph H Weinert
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| | | | | | | | - Sebastian T Soukup
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
| | - Sabine E Kulling
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut, Federal Research Institute of Nutrition and Food, Karlsruhe, Germany
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Li S, Zhao Y, Wu P, Grierson D, Gao L. Ripening and rot: How ripening processes influence disease susceptibility in fleshy fruits. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024. [PMID: 39016673 DOI: 10.1111/jipb.13739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 06/24/2024] [Indexed: 07/18/2024]
Abstract
Fleshy fruits become more susceptible to pathogen infection when they ripen; for example, changes in cell wall properties related to softening make it easier for pathogens to infect fruits. The need for high-quality fruit has driven extensive research on improving pathogen resistance in important fruit crops such as tomato (Solanum lycopersicum). In this review, we summarize current progress in understanding how changes in fruit properties during ripening affect infection by pathogens. These changes affect physical barriers that limit pathogen entry, such as the fruit epidermis and its cuticle, along with other defenses that limit pathogen growth, such as preformed and induced defense compounds. The plant immune system also protects ripening fruit by recognizing pathogens and initiating defense responses involving reactive oxygen species production, mitogen-activated protein kinase signaling cascades, and jasmonic acid, salicylic acid, ethylene, and abscisic acid signaling. These phytohormones regulate an intricate web of transcription factors (TFs) that activate resistance mechanisms, including the expression of pathogenesis-related genes. In tomato, ripening regulators, such as RIPENING INHIBITOR and NON_RIPENING, not only regulate ripening but also influence fruit defenses against pathogens. Moreover, members of the ETHYLENE RESPONSE FACTOR (ERF) family play pivotal and distinct roles in ripening and defense, with different members being regulated by different phytohormones. We also discuss the interaction of ripening-related and defense-related TFs with the Mediator transcription complex. As the ripening processes in climacteric and non-climacteric fruits share many similarities, these processes have broad applications across fruiting crops. Further research on the individual contributions of ERFs and other TFs will inform efforts to diminish disease susceptibility in ripe fruit, satisfy the growing demand for high-quality fruit and decrease food waste and related economic losses.
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Affiliation(s)
- Shan Li
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
| | - Yu Zhao
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Pan Wu
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
| | - Donald Grierson
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Lei Gao
- State Key Laboratory of Plant Diversity and Specialty Crops, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
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18
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Alexander LE, Winkelman D, Stenback KE, Lane M, Campbell KR, Trost E, Flyckt K, Schelling MA, Rizhsky L, Yandeau-Nelson MD, Nikolau BJ. The impact of the GLOSSY2 and GLOSSY2-LIKE BAHD-proteins in affecting the product profile of the maize fatty acid elongase. FRONTIERS IN PLANT SCIENCE 2024; 15:1403779. [PMID: 39055356 PMCID: PMC11269236 DOI: 10.3389/fpls.2024.1403779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 06/20/2024] [Indexed: 07/27/2024]
Abstract
The maize glossy2 and glossy2-like genes are homologs, which encode proteins that belong to the BAHD family of acyltransferases. In planta genetic studies have demonstrated that these genes may be involved in the elongation of very long chain fatty acids (VLCFAs) that are precursors of the cuticular wax fraction of the plant cuticle. VLCFAs are synthesized by a fatty acyl-CoA elongase complex (FAE) that consists of four component enzymes. Previously, we functionally identified the maize FAE component enzymes by their ability to complement haploid Saccharomyces cerevisiae strains that carry lethal deletion alleles for each FAE component enzyme. In this study we used these complemented haploid strains and wild-type diploid strains to evaluate whether the co-expression of either GLOSSY2 or GLOSSY2-LIKE with individual maize FAE component enzymes affects the VLCFA product-profile of the FAE system. Wild-type diploid strains produced VLCFAs of up to 28-carbon chain length. Co-expression of GLOSSY2 or GLOSSY2-LIKE with a combination of maize 3-ketoacyl-CoA synthases stimulated the synthesis of longer VLCFAs, up to 30-carbon chain lengths. However, such results could not be recapitulated when these co-expression experiments were conducted in the yeast haploid mutant strains that lacked individual components of the endogenous FAE system. Specifically, lethal yeast mutant strains that are genetically complemented by the expression of maize FAE-component enzymes produce VLCFAs that range between 20- and 26-carbon chain lengths. However, expressing either GLOSSY2 or GLOSSY2-LIKE in these complemented strains does not enable the synthesis of longer chain VLCFAs. These results indicate that the apparent stimulatory role of GLOSSY2 or GLOSSY2-LIKE to enable the synthesis of longer chain VLCFAs in diploid yeast cells may be associated with mixing plant enzyme components with the endogenous FAE complex.
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Affiliation(s)
- Liza Esther Alexander
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, United States
- Center for Metabolic Biology, Iowa State University, Ames, IA, United States
| | - Dirk Winkelman
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, United States
- Center for Metabolic Biology, Iowa State University, Ames, IA, United States
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, IA, United States
| | - Kenna E. Stenback
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, United States
- Center for Metabolic Biology, Iowa State University, Ames, IA, United States
| | - Madison Lane
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, IA, United States
| | - Katelyn R. Campbell
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, IA, United States
| | - Elysse Trost
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, IA, United States
| | - Kayla Flyckt
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, United States
- Center for Metabolic Biology, Iowa State University, Ames, IA, United States
| | - Michael A. Schelling
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, United States
| | - Ludmila Rizhsky
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, United States
- Center for Metabolic Biology, Iowa State University, Ames, IA, United States
| | - Marna D. Yandeau-Nelson
- Center for Metabolic Biology, Iowa State University, Ames, IA, United States
- Department of Genetics, Development, and Cell Biology, Iowa State University, Ames, IA, United States
| | - Basil J. Nikolau
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, United States
- Center for Metabolic Biology, Iowa State University, Ames, IA, United States
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Zhang Z, Gozdzik J, Jetter R. Characterization of the closely related Arabidopsis thaliana β-ketoacyl-CoA synthases KCS3, KCS12 and KCS19. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 119:490-507. [PMID: 38666591 DOI: 10.1111/tpj.16778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 03/25/2024] [Accepted: 04/02/2024] [Indexed: 07/01/2024]
Abstract
The cuticle, consisting of cuticular wax and cutin, is a lipid membrane that seals the plant surface against environmental stress. β-Ketoacyl-CoA synthases (KCSs) are condensing enzymes catalyzing crucial reactions elongating hydrocarbon chains into precursors for various cuticular wax components. Although many KCS genes were well characterized in various species, the functions of the closely related Arabidopsis KCS3, KCS12, KCS19 enzymes remained unclear. Here, we found KCS3 preferentially expressed in growing organs, especially in guard cells. kcs3 mutants and kcs3kcs12 double mutants displayed sepal fusion phenotypes, suggesting defects in cuticle formation. The mutants had decreased amounts of wax components with relatively short hydrocarbon chains in the developing organs but increased levels of wax compounds in mature organs. In contrast, kcs19 mutants showed seed fusion phenotypes and altered chain length distributions in seed suberin. Taken together, our results show that KCS12 and KCS3 share redundant functions in flower development, while KCS19 is involved in seed coat formation. All three condensing enzymes are involved in the elongation of C>18 hydrocarbon chains in young, actively expanding tissues.
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Affiliation(s)
- Zhonghang Zhang
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Jedrzej Gozdzik
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
| | - Reinhard Jetter
- Department of Botany, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1, Canada
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20
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Mori BA, Coutu C, Erlandson MA, Hegedus DD. Exploring the contribution of the salivary gland and midgut to digestion in the swede midge (Contarinia nasturtii) through a genomics-guided approach. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2024; 116:e22135. [PMID: 39038196 DOI: 10.1002/arch.22135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/28/2024] [Accepted: 07/05/2024] [Indexed: 07/24/2024]
Abstract
The larvae of Contarinia nasturtii (Kieffer) (Diptera: Cecidomyiidae), the swede midge, targets the meristem of brassica crops where they induce the formation of galls and disrupt seed and vegetable production. Previously, we examined the salivary gland transcriptome of newly-hatched first instar larvae as they penetrated the host and initiated gall formation. Here we examine the salivary gland and midgut transcriptome of third instar larvae and provide evidence for cooperative nutrient acquisition beginning with secretion of enzymes and feeding facilitators followed by gastrointestinal digestion. Sucrose, presumably obtained from the phloem, appeared to be a major nutrient source as several α-glucosidases (sucrases, maltases) and β-fructofuranosidases (invertases) were identified. Genes encoding β-fructofuranosidases/invertases were among the most highly expressed in both tissues and represented two distinct gene families that may have originated via horizontal gene transfer from bacteria. The importance of the phloem as a nutrient source is underscored by the expression of genes encoding regucalcin and ARMET (arginine-rich mutated in early stages of tumor) which interfere with calcium signalling and prevent sieve tube occlusion. Lipids, proteins, and starch appear to serve as a secondary nutrient sources. Genes encoding enzymes involved in the detoxification of glucosinolates (myrosinases, arylsulfatases, and glutathione-S-transferases) were expressed indicative of Brassicaceae host specialization. The midgut expressed simple peritrophins and mucins typical of those found in Type II peritrophic matrices, the first such description for a gall midge.
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Affiliation(s)
- Boyd A Mori
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Cathy Coutu
- Agriculture and Agri-Food Canada, Saskatoon Research and Development Centre, Saskatoon, Saskatchewan, Canada
| | - Martin A Erlandson
- Agriculture and Agri-Food Canada, Saskatoon Research and Development Centre, Saskatoon, Saskatchewan, Canada
| | - Dwayne D Hegedus
- Agriculture and Agri-Food Canada, Saskatoon Research and Development Centre, Saskatoon, Saskatchewan, Canada
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21
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Kuźniak E, Gajewska E. Lipids and Lipid-Mediated Signaling in Plant-Pathogen Interactions. Int J Mol Sci 2024; 25:7255. [PMID: 39000361 PMCID: PMC11241471 DOI: 10.3390/ijms25137255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 06/28/2024] [Accepted: 06/29/2024] [Indexed: 07/16/2024] Open
Abstract
Plant lipids are essential cell constituents with many structural, storage, signaling, and defensive functions. During plant-pathogen interactions, lipids play parts in both the preexisting passive defense mechanisms and the pathogen-induced immune responses at the local and systemic levels. They interact with various components of the plant immune network and can modulate plant defense both positively and negatively. Under biotic stress, lipid signaling is mostly associated with oxygenated natural products derived from unsaturated fatty acids, known as oxylipins; among these, jasmonic acid has been of great interest as a specific mediator of plant defense against necrotrophic pathogens. Although numerous studies have documented the contribution of oxylipins and other lipid-derived species in plant immunity, their specific roles in plant-pathogen interactions and their involvement in the signaling network require further elucidation. This review presents the most relevant and recent studies on lipids and lipid-derived signaling molecules involved in plant-pathogen interactions, with the aim of providing a deeper insight into the mechanisms underpinning lipid-mediated regulation of the plant immune system.
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Affiliation(s)
- Elżbieta Kuźniak
- Department of Plant Physiology and Biochemistry, University of Lodz, 90-237 Łódź, Poland
| | - Ewa Gajewska
- Department of Plant Physiology and Biochemistry, University of Lodz, 90-237 Łódź, Poland
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22
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Straube J, Hurtado G, Zeisler-Diehl V, Schreiber L, Knoche M. Cuticle deposition ceases during strawberry fruit development. BMC PLANT BIOLOGY 2024; 24:623. [PMID: 38951751 PMCID: PMC11218262 DOI: 10.1186/s12870-024-05327-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 06/24/2024] [Indexed: 07/03/2024]
Abstract
BACKGROUND Ideally, the barrier properties of a fruit's cuticle persist throughout its development. This presents a challenge for strawberry fruit, with their rapid development and thin cuticles. The objective was to establish the developmental time course of cuticle deposition in strawberry fruit. RESULTS Fruit mass and surface area increase rapidly, with peak growth rate coinciding with the onset of ripening. On a whole-fruit basis, the masses of cutin and wax increase but on a unit surface-area basis, they decrease. The decrease is associated with marked increases in elastic strain. The expressions of cuticle-associated genes involved in transcriptional regulation (FaSHN1, FaSHN2, FaSHN3), synthesis of cutin (FaLACS2, FaGPAT3) and wax (FaCER1, FaKCS10, FaKCR1), and those involved in transport of cutin monomers and wax constituents (FaABCG11, FaABCG32) decreased until maturity. The only exceptions were FaLACS6 and FaGPAT6 that are presumably involved in cutin synthesis, and FaCER1 involved in wax synthesis. This result was consistent across five strawberry cultivars. Strawberry cutin consists mainly of C16 and C18 monomers, plus minor amounts of C19, C20, C22 and C24 monomers, ω-hydroxy acids, dihydroxy acids, epoxy acids, primary alcohols, carboxylic acids and dicarboxylic acids. The most abundant monomer is 10,16-dihydroxyhexadecanoic acid. Waxes comprise mainly long-chain fatty acids C29 to C46, with smaller amounts of C16 to C28. Wax constituents are carboxylic acids, primary alcohols, alkanes, aldehydes, sterols and esters. CONCLUSION The downregulation of cuticle deposition during development accounts for the marked cuticular strain, for the associated microcracking, and for their high susceptibility to the disorders of water soaking and cracking.
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Affiliation(s)
- Jannis Straube
- Institute of Horticultural Production Systems, Fruit Science Section, Leibniz University Hannover, Herrenhäuser Straße 2, Hannover, 30419, Germany
| | - Grecia Hurtado
- Institute of Horticultural Production Systems, Fruit Science Section, Leibniz University Hannover, Herrenhäuser Straße 2, Hannover, 30419, Germany
| | - Viktoria Zeisler-Diehl
- Department of Ecophysiology, Institute of Cellular and Molecular Botany (IZMB), University of Bonn, Kirschallee 1, Bonn, 53115, Germany
| | - Lukas Schreiber
- Department of Ecophysiology, Institute of Cellular and Molecular Botany (IZMB), University of Bonn, Kirschallee 1, Bonn, 53115, Germany
| | - Moritz Knoche
- Institute of Horticultural Production Systems, Fruit Science Section, Leibniz University Hannover, Herrenhäuser Straße 2, Hannover, 30419, Germany.
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23
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Chen K, Alexander LE, Mahgoub U, Okazaki Y, Higashi Y, Perera AM, Showman LJ, Loneman D, Dennison TS, Lopez M, Claussen R, Peddicord L, Saito K, Lauter N, Dorman KS, Nikolau BJ, Yandeau-Nelson MD. Dynamic relationships among pathways producing hydrocarbons and fatty acids of maize silk cuticular waxes. PLANT PHYSIOLOGY 2024; 195:2234-2255. [PMID: 38537616 PMCID: PMC11213258 DOI: 10.1093/plphys/kiae150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 02/06/2024] [Indexed: 06/30/2024]
Abstract
The hydrophobic cuticle is the first line of defense between aerial portions of plants and the external environment. On maize (Zea mays L.) silks, the cuticular cutin matrix is infused with cuticular waxes, consisting of a homologous series of very long-chain fatty acids (VLCFAs), aldehydes, and hydrocarbons. Together with VLC fatty-acyl-CoAs (VLCFA-CoAs), these metabolites serve as precursors, intermediates, and end-products of the cuticular wax biosynthetic pathway. To deconvolute the potentially confounding impacts of the change in silk microenvironment and silk development on this pathway, we profiled cuticular waxes on the silks of the inbreds B73 and Mo17, and their reciprocal hybrids. Multivariate interrogation of these metabolite abundance data demonstrates that VLCFA-CoAs and total free VLCFAs are positively correlated with the cuticular wax metabolome, and this metabolome is primarily affected by changes in the silk microenvironment and plant genotype. Moreover, the genotype effect on the pathway explains the increased accumulation of cuticular hydrocarbons with a concomitant reduction in cuticular VLCFA accumulation on B73 silks, suggesting that the conversion of VLCFA-CoAs to hydrocarbons is more effective in B73 than Mo17. Statistical modeling of the ratios between cuticular hydrocarbons and cuticular VLCFAs reveals a significant role of precursor chain length in determining this ratio. This study establishes the complexity of the product-precursor relationships within the silk cuticular wax-producing network by dissecting both the impact of genotype and the allocation of VLCFA-CoA precursors to different biological processes and demonstrates that longer chain VLCFA-CoAs are preferentially utilized for hydrocarbon biosynthesis.
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Affiliation(s)
- Keting Chen
- Department of Genetics, Development & Cell Biology, Iowa State University, Ames, IA 50011, USA
- Bioinformatics & Computational Biology Graduate Program, Iowa State University, Ames, IA 50011, USA
| | - Liza E Alexander
- Roy J. Carver Department of Biochemistry, Biophysics & Molecular Biology, Iowa State University, Ames, IA 50011, USA
| | - Umnia Mahgoub
- Department of Genetics, Development & Cell Biology, Iowa State University, Ames, IA 50011, USA
| | - Yozo Okazaki
- Metabolomics Research Group, RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa 230-0045, Japan
- Graduate School of Bioresources, Mie University, Tsu, Mie 514-8507, Japan
| | - Yasuhiro Higashi
- Metabolomics Research Group, RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa 230-0045, Japan
| | - Ann M Perera
- W.M. Keck Metabolomics Research Laboratory, Iowa State University, Ames, IA 50011, USA
| | - Lucas J Showman
- W.M. Keck Metabolomics Research Laboratory, Iowa State University, Ames, IA 50011, USA
| | - Derek Loneman
- Department of Genetics, Development & Cell Biology, Iowa State University, Ames, IA 50011, USA
| | - Tesia S Dennison
- Department of Plant Pathology & Microbiology, Iowa State University, Ames, IA 50011, USA
- Interdepartmental Genetics & Genomics Graduate Program, Iowa State University, Ames, IA 50011, USA
| | - Miriam Lopez
- Corn Insects and Crop Genetics Research Unit, USDA-ARS, Ames, IA 50011, USA
| | - Reid Claussen
- Department of Genetics, Development & Cell Biology, Iowa State University, Ames, IA 50011, USA
| | - Layton Peddicord
- Department of Plant Pathology & Microbiology, Iowa State University, Ames, IA 50011, USA
- Interdepartmental Genetics & Genomics Graduate Program, Iowa State University, Ames, IA 50011, USA
| | - Kazuki Saito
- Metabolomics Research Group, RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa 230-0045, Japan
| | - Nick Lauter
- Department of Plant Pathology & Microbiology, Iowa State University, Ames, IA 50011, USA
- Interdepartmental Genetics & Genomics Graduate Program, Iowa State University, Ames, IA 50011, USA
- Corn Insects and Crop Genetics Research Unit, USDA-ARS, Ames, IA 50011, USA
| | - Karin S Dorman
- Department of Genetics, Development & Cell Biology, Iowa State University, Ames, IA 50011, USA
- Bioinformatics & Computational Biology Graduate Program, Iowa State University, Ames, IA 50011, USA
- Department of Statistics, Iowa State University, Ames, IA 50011, USA
| | - Basil J Nikolau
- Bioinformatics & Computational Biology Graduate Program, Iowa State University, Ames, IA 50011, USA
- Roy J. Carver Department of Biochemistry, Biophysics & Molecular Biology, Iowa State University, Ames, IA 50011, USA
- Interdepartmental Genetics & Genomics Graduate Program, Iowa State University, Ames, IA 50011, USA
- Center for Metabolic Biology, Iowa State University, Ames, IA 50011, USA
| | - Marna D Yandeau-Nelson
- Department of Genetics, Development & Cell Biology, Iowa State University, Ames, IA 50011, USA
- Bioinformatics & Computational Biology Graduate Program, Iowa State University, Ames, IA 50011, USA
- Interdepartmental Genetics & Genomics Graduate Program, Iowa State University, Ames, IA 50011, USA
- Center for Metabolic Biology, Iowa State University, Ames, IA 50011, USA
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24
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Campoli C, Eskan M, McAllister T, Liu L, Shoesmith J, Prescott A, Ramsay L, Waugh R, McKim SM. A GDSL-motif Esterase/Lipase Affects Wax and Cutin Deposition and Controls Hull-Caryopsis Attachment in Barley. PLANT & CELL PHYSIOLOGY 2024; 65:999-1013. [PMID: 38668634 PMCID: PMC11209556 DOI: 10.1093/pcp/pcae041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/29/2024] [Accepted: 04/25/2024] [Indexed: 06/28/2024]
Abstract
The cuticle covering aerial organs of land plants is well known to protect against desiccation. Cuticles also play diverse and specialized functions, including organ separation, depending on plant and tissue. Barley shows a distinctive cuticular wax bloom enriched in β-diketones on leaf sheaths, stem nodes and internodes and inflorescences. Barley also develops a sticky surface on the outer pericarp layer of its grain fruit leading to strongly adhered hulls, 'covered grain', important for embryo protection and seed dispersal. While the transcription factor-encoding gene HvNUDUM (HvNUD) appears essential for adherent hulls, little is understood about how the pericarp cuticle changes during adhesion or whether changes in pericarp cuticles contribute to another phenotype where hulls partially shed, called 'skinning'. To that end, we screened barley lines for hull adhesion defects, focussing on the Eceriferum (= waxless, cer) mutants. Here, we show that the cer-xd allele causes defective wax blooms and compromised hull adhesion, and results from a mutation removing the last 10 amino acids of the GDS(L) [Gly, Asp, Ser, (Leu)]-motif esterase/lipase HvGDSL1. We used severe and moderate HvGDSL1 alleles to show that complete HvGDSL1 function is essential for leaf blade cuticular integrity, wax bloom deposition over inflorescences and leaf sheaths and pericarp cuticular ridge formation. Expression data suggest that HvGDSL1 may regulate hull adhesion independently of HvNUD. We found high conservation of HvGDSL1 among barley germplasm, so variation in HvGDSL1 unlikely leads to grain skinning in cultivated barley. Taken together, we reveal a single locus which controls adaptive cuticular properties across different organs in barley.
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Affiliation(s)
- Chiara Campoli
- Division of Plant Sciences, School of Life Sciences, University of Dundee, Errol road, Invergowrie, Dundee DD25DA, UK
- Cell and Molecular Sciences, James Hutton Institute, Errol road, Invergowrie, Dundee DD25DA, UK
| | - Mhmoud Eskan
- Division of Plant Sciences, School of Life Sciences, University of Dundee, Errol road, Invergowrie, Dundee DD25DA, UK
| | - Trisha McAllister
- Division of Plant Sciences, School of Life Sciences, University of Dundee, Errol road, Invergowrie, Dundee DD25DA, UK
| | - Linsan Liu
- Division of Plant Sciences, School of Life Sciences, University of Dundee, Errol road, Invergowrie, Dundee DD25DA, UK
| | - Jennifer Shoesmith
- Division of Plant Sciences, School of Life Sciences, University of Dundee, Errol road, Invergowrie, Dundee DD25DA, UK
| | - Alan Prescott
- DIF and Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Nethergate, Dundee DD14HN, UK
| | - Luke Ramsay
- Cell and Molecular Sciences, James Hutton Institute, Errol road, Invergowrie, Dundee DD25DA, UK
| | - Robbie Waugh
- Division of Plant Sciences, School of Life Sciences, University of Dundee, Errol road, Invergowrie, Dundee DD25DA, UK
- Cell and Molecular Sciences, James Hutton Institute, Errol road, Invergowrie, Dundee DD25DA, UK
| | - Sarah M McKim
- Division of Plant Sciences, School of Life Sciences, University of Dundee, Errol road, Invergowrie, Dundee DD25DA, UK
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25
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Sherin PS, Rueckel M, Kuimova MK. Fluorescent Molecular Rotors Quantify an Adjuvant-Induced Softening of Plant Wax. CHEMICAL & BIOMEDICAL IMAGING 2024; 2:453-461. [PMID: 38939873 PMCID: PMC11200253 DOI: 10.1021/cbmi.4c00005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 04/24/2024] [Accepted: 04/27/2024] [Indexed: 06/29/2024]
Abstract
Epicuticular wax is the outmost layer of plant leaves that protects them from desiccation and penetration of harmful reagents. There is an intense industrial effort in the development of softening agents, adjuvants, that can adjust the permeability of the wax toward pesticides and, thus, play an important role in sustainable agriculture. However, mechanistic understanding of the structure and dynamic properties within the plant wax, particularly upon the application of adjuvants, is currently lacking. In this work, we demonstrate that fluorescence lifetime imaging microscopy (FLIM) combined with molecular rotors, fluorescent probes sensitive to viscosity, can directly probe the microviscosity of amorphous and crystalline phases of model plant wax layers. Moreover, this approach is able to quantify the changes in viscosity in both phases upon the addition of water and adjuvant solutions on top of the wax. We show that water permeation mostly perturbs the crystalline phase of the wax, while our chosen adjuvant, Plurafac LF431, mainly softens the amorphous phase of the wax. Our technique provides a facile and quantitative way to monitor dynamic properties within plant waxes with diffraction-limited resolution and reveals the effect of organic substances on wax structure and rigidity, crucial for designing next-generation agents to improve agricultural efficiency.
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Affiliation(s)
- Petr S. Sherin
- MSRH,
Department of Chemistry, Imperial College
London, 82 Wood Lane, London W12
0BZ, U.K.
| | - Markus Rueckel
- BASF
SE, Carl-Bosch-Strasse
38, Ludwigshafen am Rhein 67056, Germany
| | - Marina K. Kuimova
- MSRH,
Department of Chemistry, Imperial College
London, 82 Wood Lane, London W12
0BZ, U.K.
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26
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Wang X, Fu Y, Liu X, Chang C. Wheat MIXTA-like Transcriptional Activators Positively Regulate Cuticular Wax Accumulation. Int J Mol Sci 2024; 25:6557. [PMID: 38928263 PMCID: PMC11204111 DOI: 10.3390/ijms25126557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 06/10/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
MIXTA-like transcription factors AtMYB16 and AtMYB106 play important roles in the regulation of cuticular wax accumulation in dicot model plant Arabidopsis thaliana, but there are very few studies on the MIXTA-like transcription factors in monocot plants. Herein, wheat MIXTA-like transcription factors TaMIXTA1 and TaMIXTA2 were characterized as positive regulators of cuticular wax accumulation. The virus-induced gene silencing experiments showed that knock-down of wheat TaMIXTA1 and TaMIXTA2 expressions resulted in the decreased accumulation of leaf cuticular wax, increased leaf water loss rate, and potentiated chlorophyll leaching. Furthermore, three wheat orthologous genes of ECERIFERUM 5 (TaCER5-1A, 1B, and 1D) and their function in cuticular wax deposition were reported. The silencing of TaCER5 by BSMV-VIGS led to reduced loads of leaf cuticular wax and enhanced rates of leaf water loss and chlorophyll leaching, indicating the essential role of the TaCER5 gene in the deposition of wheat cuticular wax. In addition, we demonstrated that TaMIXTA1 and TaMIXTA2 function as transcriptional activators and could directly stimulate the transcription of wax biosynthesis gene TaKCS1 and wax deposition gene TaCER5. The above results strongly support that wheat MIXTA-Like transcriptional activators TaMIXTA1 and TaMIXTA2 positively regulate cuticular wax accumulation via activating TaKCS1 and TaCER5 gene transcription.
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Affiliation(s)
| | | | | | - Cheng Chang
- College of Life Sciences, Qingdao University, Qingdao 266071, China
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27
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Asadyar L, de Felippes FF, Bally J, Blackman CJ, An J, Sussmilch FC, Moghaddam L, Williams B, Blanksby SJ, Brodribb TJ, Waterhouse PM. Evidence for within-species transition between drought response strategies in Nicotiana benthamiana. THE NEW PHYTOLOGIST 2024. [PMID: 38863314 DOI: 10.1111/nph.19898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 05/23/2024] [Indexed: 06/13/2024]
Abstract
Nicotiana benthamiana is predominantly distributed in arid habitats across northern Australia. However, none of six geographically isolated accessions shows obvious xerophytic morphological features. To investigate how these tender-looking plants withstand drought, we examined their responses to water deprivation, assessed phenotypic, physiological, and cellular responses, and analysed cuticular wax composition and wax biosynthesis gene expression profiles. Results showed that the Central Australia (CA) accession, globally known as a research tool, has evolved a drought escape strategy with early vigour, short life cycle, and weak, water loss-limiting responses. By contrast, a northern Queensland (NQ) accession responded to drought by slowing growth, inhibiting flowering, increasing leaf cuticle thickness, and altering cuticular wax composition. Under water stress, NQ increased the heat stability and water impermeability of its cuticle by extending the carbon backbone of cuticular long-chain alkanes from c. 25 to 33. This correlated with rapid upregulation of at least five wax biosynthesis genes. In CA, the alkane chain lengths (c. 25) and gene expression profiles remained largely unaltered. This study highlights complex genetic and environmental control over cuticle composition and provides evidence for divergence into at least two fundamentally different drought response strategies within the N. benthamiana species in < 1 million years.
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Affiliation(s)
- Leila Asadyar
- School of Biology and Environmental Science, Centre for Agriculture and the Bioeconomy, Queensland University of Technology (QUT), Brisbane, Qld, 4000, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland (UQ), Brisbane, Qld, 4072, Australia
| | - Felipe Fenselau de Felippes
- School of Biology and Environmental Science, Centre for Agriculture and the Bioeconomy, Queensland University of Technology (QUT), Brisbane, Qld, 4000, Australia
| | - Julia Bally
- School of Biology and Environmental Science, Centre for Agriculture and the Bioeconomy, Queensland University of Technology (QUT), Brisbane, Qld, 4000, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland (UQ), Brisbane, Qld, 4072, Australia
| | - Chris J Blackman
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland (UQ), Brisbane, Qld, 4072, Australia
- School of Natural Sciences, University of Tasmania (UTAS), Sandy Bay, Hobart, Tas., 7005, Australia
| | - Jiyuan An
- School of Biology and Environmental Science, Centre for Agriculture and the Bioeconomy, Queensland University of Technology (QUT), Brisbane, Qld, 4000, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland (UQ), Brisbane, Qld, 4072, Australia
| | - Frances C Sussmilch
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland (UQ), Brisbane, Qld, 4072, Australia
- School of Natural Sciences, University of Tasmania (UTAS), Sandy Bay, Hobart, Tas., 7005, Australia
| | - Lalehvash Moghaddam
- School of Biology and Environmental Science, Centre for Agriculture and the Bioeconomy, Queensland University of Technology (QUT), Brisbane, Qld, 4000, Australia
- School of Chemistry and Physics, Central Analytical Research Facility, Queensland University of Technology (QUT), Brisbane, Qld, 4000, Australia
| | - Brett Williams
- School of Biology and Environmental Science, Centre for Agriculture and the Bioeconomy, Queensland University of Technology (QUT), Brisbane, Qld, 4000, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland (UQ), Brisbane, Qld, 4072, Australia
| | - Stephen J Blanksby
- School of Chemistry and Physics, Central Analytical Research Facility, Queensland University of Technology (QUT), Brisbane, Qld, 4000, Australia
| | - Timothy J Brodribb
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland (UQ), Brisbane, Qld, 4072, Australia
- School of Natural Sciences, University of Tasmania (UTAS), Sandy Bay, Hobart, Tas., 7005, Australia
| | - Peter M Waterhouse
- School of Biology and Environmental Science, Centre for Agriculture and the Bioeconomy, Queensland University of Technology (QUT), Brisbane, Qld, 4000, Australia
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, University of Queensland (UQ), Brisbane, Qld, 4072, Australia
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28
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Ma Y, Chang W, Li Y, Xu J, Song Y, Yao X, Wang L, Sun Y, Guo L, Zhang H, Liu X. Plant cuticles repress organ initiation and development during skotomorphogenesis in Arabidopsis. PLANT COMMUNICATIONS 2024; 5:100850. [PMID: 38409782 PMCID: PMC11211553 DOI: 10.1016/j.xplc.2024.100850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 02/11/2024] [Accepted: 02/21/2024] [Indexed: 02/28/2024]
Abstract
After germination in the dark, plants produce a shoot apical hook and closed cotyledons to protect the quiescent shoot apical meristem (SAM), which is critical for seedling survival during skotomorphogenesis. The factors that coordinate these processes, particularly SAM repression, remain enigmatic. Plant cuticles, multilayered structures of lipid components on the outermost surface of the aerial epidermis of all land plants, provide protection against desiccation and external environmental stresses. Whether and how cuticles regulate plant development are still unclear. Here, we demonstrate that mutants of BODYGUARD1 (BDG1) and long-chain acyl-CoA synthetase2 (LACS2), key genes involved in cutin biosynthesis, produce a short hypocotyl with an opened apical hook and cotyledons in which the SAM is activated during skotomorphogenesis. Light signaling represses expression of BDG1 and LACS2, as well as cutin biosynthesis. Transcriptome analysis revealed that cuticles are critical for skotomorphogenesis, particularly for the development and function of chloroplasts. Genetic and molecular analyses showed that decreased HOOKLESS1 expression results in apical hook opening in the mutants. When hypoxia-induced expression of LITTLE ZIPPER2 at the SAM promotes organ initiation in the mutants, the de-repressed expression of cell-cycle genes and the cytokinin response induce the growth of true leaves. Our results reveal previously unrecognized developmental functions of the plant cuticle during skotomorphogenesis and demonstrate a mechanism by which light initiates photomorphogenesis through dynamic regulation of cuticle synthesis to induce coordinated and systemic changes in organ development and growth during the skotomorphogenesis-to-photomorphogenesis transition.
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Affiliation(s)
- Yuru Ma
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Research Center of the Basic Discipline of Cell Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Wenwen Chang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China
| | - Yongpeng Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China
| | - Jiahui Xu
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Yongli Song
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Xinmiao Yao
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Lei Wang
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China
| | - Yu Sun
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Research Center of the Basic Discipline of Cell Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Lin Guo
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Research Center of the Basic Discipline of Cell Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China.
| | - Hao Zhang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Research Center of the Basic Discipline of Cell Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China.
| | - Xigang Liu
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Research Center of the Basic Discipline of Cell Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Collaboration Innovation Center for Cell Signaling and Environmental Adaptation, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China.
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Guo W, Xing Y, Wen W, Su W, Hou C, Li G, Ye L. Thermodynamic Analysis of n-Nonadecane (C 19H 40)/1-Octadecanol (C 18H 37OH) Blends. Molecules 2024; 29:2722. [PMID: 38930788 PMCID: PMC11205798 DOI: 10.3390/molecules29122722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/19/2024] [Accepted: 05/27/2024] [Indexed: 06/28/2024] Open
Abstract
The article delves into the intricate phase transitions of 1-Octadecanol and n-Nonadecane within a binary system, unveiling dynamic structural changes under varying conditions. Through Fourier transform infrared (FTIR) analysis, specific molecular vibrations were identified, shedding light on the molecular composition and interactions. The study highlights the challenges in detecting subtle phase transitions and emphasises the individuality of molecular behaviours in closely related compounds. The findings underscore the complexity of phase transitions in binary systems and advocate for a nuanced approach to studying molecular structures and behaviours.
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Affiliation(s)
- Wentao Guo
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.G.); (Y.X.)
| | - Yi Xing
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.G.); (Y.X.)
| | - Wei Wen
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.G.); (Y.X.)
| | - Wei Su
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; (W.G.); (Y.X.)
| | - Changjiang Hou
- Group Strategic Research Institute, HBIS Group Co., Ltd., Shijiazhuang 050023, China; (C.H.); (G.L.)
| | - Guotao Li
- Group Strategic Research Institute, HBIS Group Co., Ltd., Shijiazhuang 050023, China; (C.H.); (G.L.)
| | - Lyumeng Ye
- Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, The Ministry of Ecology and Environment of People’s Republic of China, Guangzhou 510655, China;
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Laosatit K, Amkul K, Lin Y, Yuan X, Chen X, Somta P. Two genes encoding caffeoyl coenzyme A O-methyltransferase 1 (CCoAOMT1) are candidate genes for physical seed dormancy in cowpea (Vigna unguiculata (L.) Walp.). TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2024; 137:146. [PMID: 38834825 DOI: 10.1007/s00122-024-04653-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 05/17/2024] [Indexed: 06/06/2024]
Abstract
KEY MESSAGE The major QTL Sdp1.1+ controlling seed dormancy in cowpea was finely mapped, and two CCoAOMT1 genes were identified as candidate genes for the dormancy. Seed dormancy in wild cowpea may be useful in breeding cultivated cowpea with pre-harvest sprouting resistance. A previous study identified a major quantitative trait locus (QTL) for seed dormancy, Sdp1.1+ , using the population of the cross between cultivated cowpea 'JP81610' and wild cowpea 'JP89083.' However, the molecular basis of seed dormancy in cowpea is not yet known. In this study, we aimed to finely map the locus Sdp1.1+ and identify candidate gene(s) for it. Germination tests demonstrated that the seed coat is the major factor controlling seed dormancy in the wild cowpea JP89083. Microscopic observations revealed that wild cowpea seeds, unlike cultivated cowpea seeds, possessed a palisade cuticle layer. Fine mapping using a large F2 population of the cross JP81610 × JP89083 grown in Thailand revealed a single QTL, Sdp1.1+ , controlling seed dormancy. The Sdp1.1+ was confirmed using a small F2 population of the same cross grown in Japan. The Sdp1.1+ was mapped to a 37.34-Kb region containing three genes. Two closely linked genes, Vigun03g278900 (VuCCoAOMT1a) and Vigun03g290000 (VuCCoAOMT1b), located 4.844 Kb apart were considered as candidate genes for seed dormancy. The two genes encoded caffeoyl coenzyme A O-methyltransferase 1 (CCoAOMT1). DNA sequencing and alignment of VuCCoAOMT1a and VuCCoAOMT1b between JP89083 and JP81610 revealed a single nucleotide polymorphism (SNP) causing an amino acid change in VuCCoAOMT1a and several SNPs leading to six amino acid changes in VuCCoAOMT1b. Altogether, these results indicate that VuCCoAOMT1a and VuCCoAOMT1b are candidate genes controlling physical seed dormancy in the wild cowpea JP89083.
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Affiliation(s)
- Kularb Laosatit
- Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom, Thailand
| | - Kitiya Amkul
- Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom, Thailand
| | - Yun Lin
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Xingxing Yuan
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Xin Chen
- Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences, Nanjing, China.
| | - Prakit Somta
- Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom, Thailand.
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Xing J, Xu H, Zhu M, Zhang Y, Bai M, Zhou X, Liu H, Wang Y. Gas Chromatography-Mass Spectrometry Metabolite Analysis Combined with Transcriptomics Reveals Genes Involved in Wax Biosynthesis in Allium fistulosum L. Int J Mol Sci 2024; 25:6106. [PMID: 38892292 PMCID: PMC11173144 DOI: 10.3390/ijms25116106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 05/22/2024] [Accepted: 05/27/2024] [Indexed: 06/21/2024] Open
Abstract
Cuticular waxes are essential for protecting plants from various environmental stresses. Allium fistulosum serves as an excellent model for investigating the regulatory mechanisms underlying cuticular wax synthesis with notable epidermal wax characteristics. A combination of gas chromatography-mass spectrometry (GC-MS) metabolite analysis and transcriptomics was used to investigate variations in metabolites and gene expression patterns between the wild type (WT) and glossy mutant type (gl2) of A. fistulosum. The WT surface had a large number of acicular and lamellar waxy crystals, whereas the leaf surface of gl2 was essentially devoid of waxy crystals. And the results revealed a significant decrease in the content of 16-hentriacontanone, the principal component of cuticular wax, in the gl2 mutant. Transcriptomic analysis revealed 3084 differentially expressed genes (DEGs) between WT and gl2. Moreover, we identified 12 genes related to fatty acid or wax synthesis. Among these, 10 DEGs were associated with positive regulation of wax synthesis, whereas 2 genes exhibited negative regulatory functions. Furthermore, two of these genes were identified as key regulators through weighted gene co-expression network analysis. Notably, the promoter region of AfisC5G01838 (AfCER1-LIKE1) exhibited a 258-bp insertion upstream of the coding region in gl2 and decreased the transcription of the AfCER1-LIKE1 gene. This study provided insights into the molecular mechanisms governing cuticular wax synthesis in A. fistulosum, laying the foundation for future breeding strategies.
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Affiliation(s)
- Jiayi Xing
- Beijing Vegetable Research Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), Beijing 100097, China; (J.X.); (H.X.); (M.Z.); (Y.Z.); (M.B.); (X.Z.)
- Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing 100097, China
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Beijing 100097, China
- Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization of Xinjiang Production and Construction Crops, Department of Horticulture, Agricultural College, Shihezi University, Shihezi 832003, China
| | - Huanhuan Xu
- Beijing Vegetable Research Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), Beijing 100097, China; (J.X.); (H.X.); (M.Z.); (Y.Z.); (M.B.); (X.Z.)
- Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing 100097, China
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Beijing 100097, China
- State Key Laboratory of Crop Genetics and Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Mingzhao Zhu
- Beijing Vegetable Research Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), Beijing 100097, China; (J.X.); (H.X.); (M.Z.); (Y.Z.); (M.B.); (X.Z.)
- Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing 100097, China
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Beijing 100097, China
| | - Yuchen Zhang
- Beijing Vegetable Research Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), Beijing 100097, China; (J.X.); (H.X.); (M.Z.); (Y.Z.); (M.B.); (X.Z.)
- Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing 100097, China
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Beijing 100097, China
| | - Mifeng Bai
- Beijing Vegetable Research Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), Beijing 100097, China; (J.X.); (H.X.); (M.Z.); (Y.Z.); (M.B.); (X.Z.)
- Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing 100097, China
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Beijing 100097, China
| | - Xuyang Zhou
- Beijing Vegetable Research Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), Beijing 100097, China; (J.X.); (H.X.); (M.Z.); (Y.Z.); (M.B.); (X.Z.)
- Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing 100097, China
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Beijing 100097, China
| | - Huiying Liu
- Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization of Xinjiang Production and Construction Crops, Department of Horticulture, Agricultural College, Shihezi University, Shihezi 832003, China
| | - Yongqin Wang
- Beijing Vegetable Research Center, Beijing Academy of Agricultural and Forestry Sciences (BAAFS), Beijing 100097, China; (J.X.); (H.X.); (M.Z.); (Y.Z.); (M.B.); (X.Z.)
- Key Laboratory of Biology and Genetics Improvement of Horticultural Crops (North China), Ministry of Agriculture, Beijing 100097, China
- Beijing Key Laboratory of Vegetable Germplasms Improvement, Beijing 100097, China
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Keyl A, Kwas V, Lewandowska M, Herrfurth C, Kunst L, Feussner I. AtMYB41 acts as a dual-function transcription factor that regulates the formation of lipids in an organ- and development-dependent manner. PLANT BIOLOGY (STUTTGART, GERMANY) 2024; 26:568-582. [PMID: 38634447 DOI: 10.1111/plb.13650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/02/2024] [Indexed: 04/19/2024]
Abstract
The plant cuticle controls non-stomatal water loss and can serve as a barrier against biotic agents, whereas the heteropolymer suberin and its associated waxes are deposited constitutively at specific cell wall locations. While several transcription factors controlling cuticle formation have been identified, those involved in the transcriptional regulation of suberin biosynthesis remain poorly characterized. The major goal of this study was to further analyse the function of the R2R3-Myeloblastosis (MYB) transcription factor AtMYB41 in formation of the cuticle, suberin, and suberin-associated waxes throughout plant development. For functional analysis, the organ-specific expression pattern of AtMYB41 was analysed and Atmyb41ge alleles were generated using the CRISPR/Cas9 system. These were investigated for root growth and water permeability upon stress. In addition, the fatty acid, wax, cutin, and suberin monomer composition of different organs was evaluated by gas chromatography. The characterization of Atmyb41ge mutants revealed that AtMYB41 negatively regulates the production of cuticular lipids and fatty acid biosynthesis in leaves and seeds, respectively. Remarkably, biochemical analyses indicate that AtMYB41 also positively regulates the formation of cuticular waxes in stems of Arabidopsis thaliana. Overall, these results suggest that the AtMYB41 acts as a negative regulator of cuticle and fatty acid biosynthesis in leaves and seeds, respectively, but also as a positive regulator of wax production in A. thaliana stems.
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Affiliation(s)
- A Keyl
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
| | - V Kwas
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
| | - M Lewandowska
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
| | - C Herrfurth
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
- Service Unit for Metabolomics and Lipidomics, Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Goettingen, Germany
| | - L Kunst
- Department of Botany, University of British Columbia, Vancouver, BC, Canada
| | - I Feussner
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute, University of Goettingen, Goettingen, Germany
- Service Unit for Metabolomics and Lipidomics, Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Goettingen, Germany
- Department of Plant Biochemistry, Goettingen Center for Molecular Biosciences (GZMB), University of Goettingen, Goettingen, Germany
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Geilfus CM, Zörb C, Jones JJ, Wimmer MA, Schmöckel SM. Water for agriculture: more crop per drop. PLANT BIOLOGY (STUTTGART, GERMANY) 2024; 26:499-507. [PMID: 38773740 DOI: 10.1111/plb.13652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 04/04/2024] [Indexed: 05/24/2024]
Abstract
Global crop production in agriculture depends on water availability. Future scenarios predict increasing occurrence of flash floods and rapidly developing droughts accompanied by heatwaves in humid regions that rely on rain-fed agriculture. It is challenging to maintain high crop yields, even in arid and drought-prone regions that depend on irrigation. The average water demand of crops varies significantly, depending on plant species, development stage, and climate. Most crops, such as maize and wheat, require relatively more water during the vegetative phase compared to the ripening phase. In this review, we explain WUE and options to improve water use and thus crop yield. Nutrient management might represent another possibility to manipulate water uptake and use by plants. An emerging topic involves agroforest co-cultivation, where trees in the system facilitate water transfer through hydraulic lift, benefiting neighbouring crops. Other options to enhance crop yield per water use are discussed.
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Affiliation(s)
- C-M Geilfus
- Department of Plant Nutrition and Soil Science, Hochschule Geisenheim University, Geisenheim, Germany
| | - C Zörb
- Department Quality of Plant Products, Institute of Crop Science, University of Hohenheim, Stuttgart, Germany
| | - J J Jones
- Division of Controlled Environment Horticulture, Faculty of Life Sciences, Albrecht Daniel Thaer-Institute of Agricultural and Horticultural Sciences, Humboldt-University of Berlin, Berlin, Germany
| | - M A Wimmer
- Department Quality of Plant Products, Institute of Crop Science, University of Hohenheim, Stuttgart, Germany
| | - S M Schmöckel
- Department Physiology of Yield Stability, Institute of Crop Science, University of Hohenheim, Stuttgart, Germany
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Na S, Lee YJ. Mass spectrometry imaging of Arabidopsis thaliana with in vivo D 2O labeling. FRONTIERS IN PLANT SCIENCE 2024; 15:1379299. [PMID: 38882571 PMCID: PMC11176549 DOI: 10.3389/fpls.2024.1379299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 05/10/2024] [Indexed: 06/18/2024]
Abstract
The commonly used analytical tools for metabolomics cannot directly probe metabolic activities or distinguish metabolite differences between cells and suborgans in multicellular organisms. These issues can be addressed by in-vivo isotope labeling and mass spectrometry imaging (MSI), respectively, but the combination of the two, a newly emerging technology we call MSIi, has been rarely applied to plant systems. In this study, we explored MSIi of Arabidopsis thaliana with D2O labeling to study and visualize D-labeling in three classes of lipids: arabidopsides, chloroplast lipids, and epicuticular wax. Similar to other stress responses, D2O-induced stress increased arabidopsides in an hour, but it was relatively minor for matured plants and reverted to the normal level in a few hours. The D-labeling isotopologue patterns of arabidopsides matched with those of galactolipid precursors, supporting the currently accepted biosynthesis mechanism. Matrix-assisted laser desorption/ionization (MALDI)-MSI was used to visualize the spatiotemporal distribution of deuterated chloroplast lipids, pheophytin a, MGDGs, and DGDGs, after growing day-after-sowing (DAS) 28 plants in D2O condition for 3-12 days. There was a gradual change of deuteration amount along the leaf tissues and with a longer labeling time, which was attributed to slow respiration leading to low D2O concentration in the tissues. Finally, deuterium incorporation in epicuticular wax was visualized on the surfaces of the stem and flower. The conversion efficiency of newly synthesized C30 aldehyde to C29 ketone was very low in the lower stem but very high at the top of the stem near the flower or on the flower carpel. This study successfully demonstrated that MSIi can unveil spatiotemporal metabolic activities in various tissues of A. thaliana.
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Affiliation(s)
- Sumin Na
- Department of Chemistry, Iowa State University, Ames, IA, United States
| | - Young Jin Lee
- Department of Chemistry, Iowa State University, Ames, IA, United States
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35
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Zhang Y, Yang E, Liu Q, Zhang J, Feng C. Combined full-length transcriptomic and metabolomic analysis reveals the molecular mechanisms underlying nutrients and taste components development in Primulina juliae. BMC Genom Data 2024; 25:46. [PMID: 38783179 PMCID: PMC11112898 DOI: 10.1186/s12863-024-01231-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 05/16/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND Primulina juliae has recently emerged as a novel functional vegetable, boasting a significant biomass and high calcium content. Various breeding strategies have been employed to the domestication of P. juliae. However, the absence of genome and transcriptome information has hindered the research of mechanisms governing the taste and nutrients in this plant. In this study, we conducted a comprehensive analysis, combining the full-length transcriptomics and metabolomics, to unveil the molecular mechanisms responsible for the development of nutrients and taste components in P. juliae. RESULTS We obtain a high-quality reference transcriptome of P. juliae by combing the PacBio Iso-seq and Illumina sequencing technologies. A total of 58,536 cluster consensus sequences were obtained, including 28,168 complete protein coding transcripts and 8,021 Long Non-coding RNAs. Significant differences were observed in the composition and content of compounds related to nutrients and taste, particularly flavonoids, during the leaf development. Our results showed a decrease in the content of most flavonoids as leaves develop. Malate and succinate accumulated with leaf development, while some sugar metabolites were decreased. Furthermore, we identified the different accumulation of amino acids and fatty acids, which are associated with taste traits. Moreover, our transcriptomic analysis provided a molecular basis for understanding the metabolic variations during leaf development. We identified 4,689 differentially expressed genes in the two developmental stages, and through a comprehensive transcriptome and metabolome analysis, we discovered the key structure genes and transcription factors involved in the pathways. CONCLUSIONS This study provides a high-quality reference transcriptome and reveals molecular mechanisms associated with the development of nutrients and taste components in P. juliae. These findings will enhance our understanding of the breeding and utilization of P. juliae as a vegetable.
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Affiliation(s)
- Yi Zhang
- Jiangxi Provincial Key Laboratory of ex situ Plant Conservation and Utilization, Lushan Botanical Garden, Chinese Academy of Sciences, Zhiqing Rd, No. 9, Jiujiang, 332900, China
- College of Life Science, Nanchang University, Nanchang, China
| | - Endian Yang
- Jiangxi Provincial Key Laboratory of ex situ Plant Conservation and Utilization, Lushan Botanical Garden, Chinese Academy of Sciences, Zhiqing Rd, No. 9, Jiujiang, 332900, China
- College of Life Science, Nanchang University, Nanchang, China
| | - Qin Liu
- Jiangxi Provincial Key Laboratory of ex situ Plant Conservation and Utilization, Lushan Botanical Garden, Chinese Academy of Sciences, Zhiqing Rd, No. 9, Jiujiang, 332900, China
- College of Life Science, Nanchang University, Nanchang, China
| | - Jie Zhang
- Jiangxi Provincial Key Laboratory of ex situ Plant Conservation and Utilization, Lushan Botanical Garden, Chinese Academy of Sciences, Zhiqing Rd, No. 9, Jiujiang, 332900, China
| | - Chen Feng
- Jiangxi Provincial Key Laboratory of ex situ Plant Conservation and Utilization, Lushan Botanical Garden, Chinese Academy of Sciences, Zhiqing Rd, No. 9, Jiujiang, 332900, China.
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36
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Yan G, Huang Q, Zhao S, Xu Y, He Y, Nikolic M, Nikolic N, Liang Y, Zhu Z. Silicon nanoparticles in sustainable agriculture: synthesis, absorption, and plant stress alleviation. FRONTIERS IN PLANT SCIENCE 2024; 15:1393458. [PMID: 38606077 PMCID: PMC11006995 DOI: 10.3389/fpls.2024.1393458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 03/18/2024] [Indexed: 04/13/2024]
Abstract
Silicon (Si) is a widely recognized beneficial element in plants. With the emergence of nanotechnology in agriculture, silicon nanoparticles (SiNPs) demonstrate promising applicability in sustainable agriculture. Particularly, the application of SiNPs has proven to be a high-efficiency and cost-effective strategy for protecting plant against various biotic and abiotic stresses such as insect pests, pathogen diseases, metal stress, drought stress, and salt stress. To date, rapid progress has been made in unveiling the multiple functions and related mechanisms of SiNPs in promoting the sustainability of agricultural production in the recent decade, while a comprehensive summary is still lacking. Here, the review provides an up-to-date overview of the synthesis, uptake and translocation, and application of SiNPs in alleviating stresses aiming for the reasonable usage of SiNPs in nano-enabled agriculture. The major points are listed as following: (1) SiNPs can be synthesized by using physical, chemical, and biological (green synthesis) approaches, while green synthesis using agricultural wastes as raw materials is more suitable for large-scale production and recycling agriculture. (2) The uptake and translocation of SiNPs in plants differs significantly from that of Si, which is determined by plant factors and the properties of SiNPs. (3) Under stressful conditions, SiNPs can regulate plant stress acclimation at morphological, physiological, and molecular levels as growth stimulator; as well as deliver pesticides and plant growth regulating chemicals as nanocarrier, thereby enhancing plant growth and yield. (4) Several key issues deserve further investigation including effective approaches of SiNPs synthesis and modification, molecular basis of SiNPs-induced plant stress resistance, and systematic effects of SiNPs on agricultural ecosystem.
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Affiliation(s)
- Guochao Yan
- College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable of Ministry of Agriculture and Rural Affairs, Zhejiang Agriculture and Forestry University, Hangzhou, China
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Qingying Huang
- College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Shuaijing Zhao
- College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Yunmin Xu
- College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable of Ministry of Agriculture and Rural Affairs, Zhejiang Agriculture and Forestry University, Hangzhou, China
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Yong He
- College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable of Ministry of Agriculture and Rural Affairs, Zhejiang Agriculture and Forestry University, Hangzhou, China
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Zhejiang Agriculture and Forestry University, Hangzhou, China
| | - Miroslav Nikolic
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
| | - Nina Nikolic
- Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia
| | - Yongchao Liang
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
| | - Zhujun Zhu
- College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou, China
- Key Laboratory of Quality and Safety Control for Subtropical Fruit and Vegetable of Ministry of Agriculture and Rural Affairs, Zhejiang Agriculture and Forestry University, Hangzhou, China
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, Zhejiang Agriculture and Forestry University, Hangzhou, China
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Holden AC, Cohen H, Berry HM, Rickett DV, Aharoni A, Fraser PD. Carotenoid retention during post-harvest storage of Capsicum annuum: the role of the fruit surface structure. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:1997-2012. [PMID: 38064717 DOI: 10.1093/jxb/erad482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Accepted: 12/01/2023] [Indexed: 03/28/2024]
Abstract
In this study, a chilli pepper (Capsicum annuum) panel for post-harvest carotenoid retention was studied to elucidate underlying mechanisms associated with this commercial trait of interest. Following drying and storage, some lines within the panel had an increase in carotenoids approaching 50% compared with the initial content at the fresh fruit stage. Other lines displayed a 25% loss of carotenoids. The quantitative determination of carotenoid pigments with concurrent cellular analysis indicated that in most cases, pepper fruit with thicker (up to 4-fold) lipid exocarp layers and smooth surfaces exhibit improved carotenoid retention properties. Total cutin monomer content increased in medium/high carotenoid retention fruits and subepidermal cutin deposits were responsible for the difference in exocarp thickness. Cutin biosynthesis and cuticle precursor transport genes were differentially expressed between medium/high and low carotenoid retention genotypes, and this supports the hypothesis that the fruit cuticle can contribute to carotenoid retention. Enzymatic degradation of the cuticle and cell wall suggests that in Capsicum the carotenoids (capsanthin and its esters) are embedded in the lipidic exocarp layer. This was not the case in tomato. Collectively, the data suggest that the fruit cuticle could provide an exploitable resource for the enhancement of fruit quality.
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Affiliation(s)
- Alexandra C Holden
- School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK
| | - Hagai Cohen
- Nella and Leon Benoziyo Building for Biological Sciences, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Harriet M Berry
- School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK
| | - Daniel V Rickett
- Syngenta Ltd, Jealott's Hill International Research Centre, Bracknell RG42 6EY, UK
| | - Asaph Aharoni
- Nella and Leon Benoziyo Building for Biological Sciences, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Paul D Fraser
- School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK
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Liu GS, Huang H, Grierson D, Gao Y, Ji X, Peng ZZ, Li HL, Niu XL, Jia W, He JL, Xiang LT, Gao HY, Qu GQ, Zhu HL, Zhu BZ, Luo YB, Fu DQ. NAC transcription factor SlNOR-like1 plays a dual regulatory role in tomato fruit cuticle formation. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:1903-1918. [PMID: 37856192 DOI: 10.1093/jxb/erad410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/18/2023] [Indexed: 10/20/2023]
Abstract
The plant cuticle is an important protective barrier on the plant surface, constructed mainly by polymerized cutin matrix and a complex wax mixture. Although the pathway of plant cuticle biosynthesis has been clarified, knowledge of the transcriptional regulation network underlying fruit cuticle formation remains limited. In the present work, we discovered that tomato fruits of the NAC transcription factor SlNOR-like1 knockout mutants (nor-like1) produced by CRISPR/Cas9 [clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9] displayed reduced cutin deposition and cuticle thickness, with a microcracking phenotype, while wax accumulation was promoted. Further research revealed that SlNOR-like1 promotes cutin deposition by binding to the promoters of glycerol-3-phosphate acyltransferase6 (SlGPAT6; a key gene for cutin monomer formation) and CUTIN DEFICIENT2 (SlCD2; a positive regulator of cutin production) to activate their expression. Meanwhile, SlNOR-like1 inhibits wax accumulation, acting as a transcriptional repressor by targeting wax biosynthesis, and transport-related genes 3-ketoacyl-CoA synthase1 (SlKCS1), ECERIFERUM 1-2 (SlCER1-2), SlWAX2, and glycosylphosphatidylinositol-anchored lipid transfer protein 1-like (SlLTPG1-like). In conclusion, SlNOR-like1 executes a dual regulatory effect on tomato fruit cuticle development. Our results provide a new model for the transcriptional regulation of fruit cuticle formation.
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Affiliation(s)
- Gang-Shuai Liu
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Hua Huang
- Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences; Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Guangzhou 510640, China
| | - Donald Grierson
- Laboratory of Fruit Quality Biology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- Plant Sciences Division, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
| | - Ying Gao
- Laboratory of Fruit Quality Biology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Zijingang Campus, Hangzhou 310058, China
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Xiang Ji
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Zhen-Zhen Peng
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Hong-Li Li
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Xiao-Lin Niu
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Wen Jia
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Jian-Lin He
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Lan-Ting Xiang
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Hai-Yan Gao
- Key Laboratory of Post-Harvest Handing of Fruits, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fruits and Vegetables Postharvest and Processing Technology Research of Zhejiang Province, Key Laboratory of Postharvest Preservation and Processing of Fruits and Vegetables, China National Light Industry, Food Science Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Gui-Qin Qu
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Hong-Liang Zhu
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Ben-Zhong Zhu
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yun-Bo Luo
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Da-Qi Fu
- Laboratory of Fruit Biology, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
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Guo H, Liu W, Xie Y, Wang Z, Huang C, Yi J, Yang Z, Zhao J, Yu X, Sibirina LA. Soil microbiome of shiro reveals the symbiotic relationship between Tricholoma bakamatsutake and Quercus mongolica. Front Microbiol 2024; 15:1361117. [PMID: 38601932 PMCID: PMC11004381 DOI: 10.3389/fmicb.2024.1361117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 03/14/2024] [Indexed: 04/12/2024] Open
Abstract
Tricholoma bakamatsutake is a delicious and nutritious ectomycorrhizal fungus. However, its cultivation is hindered owing to limited studies on its symbiotic relationships. The symbiotic relationship between T. bakamatsutake and its host is closely related to the shiro, a complex network composed of mycelium, mycorrhizal roots, and surrounding soil. To explore the symbiotic relationship between T. bakamatsutake and its host, soil samples were collected from T. bakamatsutake shiro (Tb) and corresponding Q. mongolica rhizosphere (CK) in four cities in Liaoning Province, China. The physicochemical properties of all the soil samples were then analyzed, along with the composition and function of the fungal and bacterial communities. The results revealed a significant increase in total potassium, available nitrogen, and sand in Tb soil compared to those in CK soil, while there was a significant decrease in pH, total nitrogen, total phosphorus, available phosphorus, and silt. The fungal community diversity in shiro was diminished, and T. bakamatsutake altered the community structure of its shiro by suppressing other fungi, such as Russula (ectomycorrhizal fungus) and Penicillium (phytopathogenic fungus). The bacterial community diversity in shiro increased, with the aggregation of mycorrhizal-helper bacteria, such as Paenibacillus and Bacillus, and plant growth-promoting bacteria, such as Solirubrobacter and Streptomyces, facilitated by T. bakamatsutake. Microbial functional predictions revealed a significant increase in pathways associated with sugar and fat catabolism within the fungal and bacterial communities of shiro. The relative genetic abundance of carboxylesterase and gibberellin 2-beta-dioxygenase in the fungal community was significantly increased, which suggested a potential symbiotic relationship between T. bakamatsutake and Q. mongolica. These findings elucidate the microbial community and relevant symbiotic environment to better understand the relationship between T. bakamatsutake and Q. mongolica.
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Affiliation(s)
- Hongbo Guo
- College of Life Engineering, Shenyang Institute of Technology, Fushun, China
- Primorye State Agricultural Academy, Ussuriysk, Russia
| | - Weiye Liu
- College of Biological Science and Technology, Shenyang Agricultural University, Shenyang, China
| | - Yuqi Xie
- College of Life Engineering, Shenyang Institute of Technology, Fushun, China
| | - Zhenyu Wang
- College of Life Engineering, Shenyang Institute of Technology, Fushun, China
| | - Chentong Huang
- College of Life Engineering, Shenyang Institute of Technology, Fushun, China
| | - Jingfang Yi
- College of Biological Science and Technology, Shenyang Agricultural University, Shenyang, China
| | - Zhaoqian Yang
- College of Biological Science and Technology, Shenyang Agricultural University, Shenyang, China
| | - Jiachen Zhao
- College of Biological Science and Technology, Shenyang Agricultural University, Shenyang, China
| | - Xiaodan Yu
- College of Biological Science and Technology, Shenyang Agricultural University, Shenyang, China
| | - Lidiya Alekseevna Sibirina
- Primorye State Agricultural Academy, Ussuriysk, Russia
- Federal Scientific Center of the East Asia Terrestrial Biodiversity Far Eastern Branch of Russian Academy of Sciences, Vladivostok, Russia
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40
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Luo W, Gonzalez E, Zarei A, Calleja S, Rozzi B, Demieville J, Li H, Truco MJ, Lavelle D, Michelmore R, Dyer JM, Jenks MA, Pauli D. Leaf cuticular wax composition of a genetically diverse collection of lettuce ( Lactuca sativa L.) cultivars evaluated under field conditions. Heliyon 2024; 10:e27226. [PMID: 38463774 PMCID: PMC10923717 DOI: 10.1016/j.heliyon.2024.e27226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 12/15/2023] [Accepted: 02/26/2024] [Indexed: 03/12/2024] Open
Abstract
Cuticular waxes of plants impart tolerance to many forms of environmental stress and help shed dangerous human pathogens on edible plant parts. Although the chemical composition of waxes on a wide variety of important crops has been described, a detailed wax compositional analysis has yet to be reported for lettuce (Lactuca sativa L.), one of the most widely consumed vegetables. We present herein the leaf wax content and composition of 12 genetically diverse lettuce cultivars sampled across five time points during their vegetative growth phase in the field. Mean total leaf wax amounts across all cultivars varied little over 28 days of vegetative growth, except for a notable decrease in total waxes following a major precipitation event, presumably due to wax degradation from wind and rain. All lettuce cultivars were found to contain a unique wax composition highly enriched in 22- and 24-carbon length 1-alcohols (docosanol and tetracosanol, respectively). In our report, the dominance of these shorter chain length 1-alcohols as wax constituents represents a relatively rare phenotype in plants. The ecological significance of these dominant and relatively short 1-alcohols is still unknown. Although waxes have been a target for improvement of various crops, no such work has been reported for lettuce. This study lays the groundwork for future research that aims to integrate cuticular wax characteristics of field grown plants into the larger context of lettuce breeding and cultivar development.
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Affiliation(s)
- Wenting Luo
- Departments of Mathematics and Biosystems Engineering, University of Arizona, Tucson, AZ, 85721, USA
| | - Emmanuel Gonzalez
- The School of Plant Sciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Ariyan Zarei
- Department of Computer Science, University of Arizona, Tucson, AZ, 85721, USA
| | - Sebastian Calleja
- The School of Plant Sciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Bruno Rozzi
- The School of Plant Sciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Jeffrey Demieville
- The School of Plant Sciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Haiquan Li
- Department of Biosystems Engineering, University of Arizona, Tucson, AZ, 85721, USA
| | - Maria-Jose Truco
- Department of Plant Sciences, University of California - Davis, Davis, CA, 95616, USA
| | - Dean Lavelle
- Department of Plant Sciences, University of California - Davis, Davis, CA, 95616, USA
| | - Richard Michelmore
- Department of Plant Sciences, University of California - Davis, Davis, CA, 95616, USA
| | - John M. Dyer
- U.S. Department of Agriculture, Agricultural Research Service, Albany, CA, 94710, USA
| | - Matthew A. Jenks
- The School of Plant Sciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Duke Pauli
- The School of Plant Sciences, University of Arizona, Tucson, AZ, 85721, USA
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Zhang H, Xue F, Guo L, Cheng J, Jabbour F, DuPasquier PE, Xie Y, Zhang P, Wu Y, Duan X, Kong H, Zhang R. The mechanism underlying asymmetric bending of lateral petals in Delphinium (Ranunculaceae). Curr Biol 2024; 34:755-768.e4. [PMID: 38272029 DOI: 10.1016/j.cub.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/13/2023] [Accepted: 01/02/2024] [Indexed: 01/27/2024]
Abstract
During the process of flower opening, most petals move downward in the direction of the pedicel (i.e., epinastic movement). In most Delphinium flowers, however, their two lateral petals display a very peculiar movement, the mirrored helical rotation, which requires the twist of the petal stalk. However, in some lineages, their lateral petals also exhibit asymmetric bending that increases the degree of mirrored helical rotation, facilitating the formation of a 3D final shape. Notably, petal asymmetric bending is a novel trait that has not been noticed yet, so its morphological nature, developmental process, and molecular mechanisms remain largely unknown. Here, by using D. anthriscifolium as a model, we determined that petal asymmetric bending was caused by the localized expansion of cell width, accompanied by the specialized array of cell wall nano-structure, on the adaxial epidermis. Digital gene analyses, gene expression, and functional studies revealed that a class I homeodomain-leucine zipper family transcription factor gene, DeanLATE MERISTEM IDENTITY1 (DeanLMI1), contributes to petal asymmetric bending; knockdown of it led to the formation of explanate 2D petals. Specifically, DeanLMI1 promotes cell expansion in width and influences the arrangement of cell wall nano-structure on the localized adaxial epidermis. These results not only provide a comprehensive portrait of petal asymmetric bending for the first time but also shed some new insights into the mechanisms of flower opening and helical movement in plants.
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Affiliation(s)
- Hanghang Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Fang Xue
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Liping Guo
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jie Cheng
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; China National Botanical Garden, Beijing 100093, China; Department of Computational and Systems Biology, John Innes Centre, Norwich Research Park, Colney Lane, Norwich NR4 7UH, UK
| | - Florian Jabbour
- Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum National d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, Paris 75005, France
| | | | - Yanru Xie
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Peng Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yijia Wu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xiaoshan Duan
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Hongzhi Kong
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; China National Botanical Garden, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China.
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Doose C, Hubas C. The metabolites of light: Untargeted metabolomic approaches bring new clues to understand light-driven acclimation of intertidal mudflat biofilm. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168692. [PMID: 38008320 DOI: 10.1016/j.scitotenv.2023.168692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/06/2023] [Accepted: 11/16/2023] [Indexed: 11/28/2023]
Abstract
The microphytobenthos (MPB), a microbial community of primary producers, play a key role in coastal ecosystem functioning, particularly in intertidal mudflats. These mudflats experience challenging variations of irradiance, forcing the micro-organisms to develop photoprotective mechanisms to survive and thrive in this dynamic environment. Two major adaptations to light are well described in literature: the excess of light energy dissipation through non-photochemical quenching (NPQ), and the vertical migration in the sediment. These mechanisms trigger considerable scientific interest, but the biological processes and metabolic mechanisms involved in light-driven vertical migration remain largely unknown. To our knowledge, this study investigates for the first time metabolomic responses of a migrational mudflat biofilm exposed for 30 min to a light gradient of photosynthetically active radiation (PAR) from 50 to 1000 μmol photons m-2 s-1. The untargeted metabolomic analysis allowed to identify metabolites involved in two types of responses to light irradiance levels. On the one hand, the production of SFAs and MUFAs, primarily derived from bacteria, indicates a healthy photosynthetic state of MPB under low light (LL; 50 and 100 PAR) and medium light (ML; 250 PAR) conditions. Conversely, when exposed to high light (HL; 500, 750 and 1000 PAR), the MPB experienced light-induced stress, triggering the production of alka(e)nes and fatty alcohols. The physiological and ecological roles of these compounds are poorly described in literature. This study sheds new light on the topic, as it suggests that these compounds may play a crucial and previously unexplored role in light-induced stress acclimation of migrational MPB biofilms. Since alka(e)nes are produced from FAs decarboxylation, these results thus emphasize for the first time the importance of FAs pathways in microphytobenthic biofilms acclimation to light.
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Affiliation(s)
- Caroline Doose
- Muséum National d'Histoire Naturelle, UMR BOREA, MNHN-CNRS-UCN-UPMC-IRD-UA, Station Marine de Concarneau, Concarneau, France.
| | - Cédric Hubas
- Muséum National d'Histoire Naturelle, UMR BOREA, MNHN-CNRS-UCN-UPMC-IRD-UA, Station Marine de Concarneau, Concarneau, France.
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Sumbur B, Zhou M, Dorjee T, Bing J, Ha S, Xu X, Zhou Y, Gao F. Chemical and Transcriptomic Analyses of Leaf Cuticular Wax Metabolism in Ammopiptanthus mongolicus under Osmotic Stress. Biomolecules 2024; 14:227. [PMID: 38397464 PMCID: PMC10886927 DOI: 10.3390/biom14020227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
Plant cuticular wax forms a hydrophobic structure in the cuticle layer covering epidermis as the first barrier between plants and environments. Ammopiptanthus mongolicus, a leguminous desert shrub, exhibits high tolerances to multiple abiotic stress. The physiological, chemical, and transcriptomic analyses of epidermal permeability, cuticular wax metabolism and related gene expression profiles under osmotic stress in A. mongolicus leaves were performed. Physiological analyses revealed decreased leaf epidermal permeability under osmotic stress. Chemical analyses revealed saturated straight-chain alkanes as major components of leaf cuticular wax, and under osmotic stress, the contents of total wax and multiple alkane components significantly increased. Transcriptome analyses revealed the up-regulation of genes involved in biosynthesis of very-long-chain fatty acids and alkanes and wax transportation under osmotic stress. Weighted gene co-expression network analysis identified 17 modules and 6 hub genes related to wax accumulation, including 5 enzyme genes coding KCS, KCR, WAX2, FAR, and LACS, and an ABCG transporter gene. Our findings indicated that the leaf epidermal permeability of A. mongolicus decreased under osmotic stress to inhibit water loss via regulating the expression of wax-related enzyme and transporter genes, further promoting cuticular wax accumulation. This study provided new evidence for understanding the roles of cuticle lipids in abiotic stress tolerance of desert plants.
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Affiliation(s)
- Batu Sumbur
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China; (B.S.); (M.Z.); (T.D.); (S.H.); (X.X.)
- Key Laboratory of Ecology and Environment in Minority Areas, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Minqi Zhou
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China; (B.S.); (M.Z.); (T.D.); (S.H.); (X.X.)
- Key Laboratory of Ecology and Environment in Minority Areas, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Tashi Dorjee
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China; (B.S.); (M.Z.); (T.D.); (S.H.); (X.X.)
- Key Laboratory of Ecology and Environment in Minority Areas, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Jie Bing
- College of Life Sciences, Beijing Normal University, Beijing 100080, China;
| | - Sijia Ha
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China; (B.S.); (M.Z.); (T.D.); (S.H.); (X.X.)
- Key Laboratory of Ecology and Environment in Minority Areas, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Xiaojing Xu
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China; (B.S.); (M.Z.); (T.D.); (S.H.); (X.X.)
- Key Laboratory of Ecology and Environment in Minority Areas, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Yijun Zhou
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China; (B.S.); (M.Z.); (T.D.); (S.H.); (X.X.)
- Key Laboratory of Ecology and Environment in Minority Areas, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
| | - Fei Gao
- Key Laboratory of Mass Spectrometry Imaging and Metabolomics, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China; (B.S.); (M.Z.); (T.D.); (S.H.); (X.X.)
- Key Laboratory of Ecology and Environment in Minority Areas, Minzu University of China, National Ethnic Affairs Commission, Beijing 100081, China
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
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44
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Braat J, Havaux M. The SIAMESE family of cell-cycle inhibitors in the response of plants to environmental stresses. FRONTIERS IN PLANT SCIENCE 2024; 15:1362460. [PMID: 38434440 PMCID: PMC10904545 DOI: 10.3389/fpls.2024.1362460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 02/02/2024] [Indexed: 03/05/2024]
Abstract
Environmental abiotic constraints are known to reduce plant growth. This effect is largely due to the inhibition of cell division in the leaf and root meristems caused by perturbations of the cell cycle machinery. Progression of the cell cycle is regulated by CDK kinases whose phosphorylation activities are dependent on cyclin proteins. Recent results have emphasized the role of inhibitors of the cyclin-CDK complexes in the impairment of the cell cycle and the resulting growth inhibition under environmental constraints. Those cyclin-CDK inhibitors (CKIs) include the KRP and SIAMESE families of proteins. This review presents the current knowledge on how CKIs respond to environmental changes and on the role played by one subclass of CKIs, the SIAMESE RELATED proteins (SMRs), in the tolerance of plants to abiotic stresses. The SMRs could play a central role in adjusting the balance between growth and stress defenses in plants exposed to environmental stresses.
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Affiliation(s)
| | - Michel Havaux
- Aix Marseille University, CEA, CNRS UMR7265, Bioscience and Biotechnology Institute of Aix Marseille, Saint-Paul-lez-Durance, France
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45
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Ciceoi R, Asanica A, Luchian V, Iordachescu M. Genomic Analysis of Romanian Lycium Genotypes: Exploring BODYGUARD Genes for Stress Resistance Breeding. Int J Mol Sci 2024; 25:2130. [PMID: 38396806 PMCID: PMC10889844 DOI: 10.3390/ijms25042130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Goji berries, long valued in Traditional Chinese Medicine and Asian cuisine for their wide range of medicinal benefits, are now considered a 'superfruit' and functional food worldwide. Because of growing demand, Europe and North America are increasing their goji berry production, using goji berry varieties that are not originally from these regions. European breeding programs are focusing on producing Lycium varieties adapted to local conditions and market demands. By 2023, seven varieties of goji berries were successfully registered in Romania, developed using germplasm that originated from sources outside the country. A broader project focused on goji berry breeding was initiated in 2014 at USAMV Bucharest. In the present research, five cultivated and three wild L. barbarum genotypes were compared to analyse genetic variation at the whole genome level. In addition, a case study presents the differences in the genomic coding sequences of BODYGUARD (BDG) 3 and 4 genes from chromosomes 4, 8, and 9, which are involved in cuticle-related resistance. All three BDG genes show distinctive differences between the cultivated and wild-type genotypes at the SNP level. In the BDG 4 gene located on chromosome 8, 69% of SNPs differentiate the wild from the cultivated genotypes, while in BDG 3 on chromosome 4, 64% of SNPs could tell the difference between the wild and cultivated goji berry. The research also uncovered significant SNP and InDel differences between cultivated and wild genotypes, in the entire genome, providing crucial insights for goji berry breeders to support the development of goji berry cultivation in Romania.
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Affiliation(s)
- Roxana Ciceoi
- Research Center for Studies of Food Quality and Agricultural Products, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59, Mărăști Bd., 011464 Bucharest, Romania;
| | - Adrian Asanica
- Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59, Mărăști Bd., 011464 Bucharest, Romania; (A.A.); (V.L.)
| | - Vasilica Luchian
- Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59, Mărăști Bd., 011464 Bucharest, Romania; (A.A.); (V.L.)
| | - Mihaela Iordachescu
- Research Center for Studies of Food Quality and Agricultural Products, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59, Mărăști Bd., 011464 Bucharest, Romania;
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46
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Fu X, Zheng H, Wang Y, Liu H, Liu P, Li L, Zhao J, Sun X, Tang K. AaABCG20 transporter involved in cutin and wax secretion affects the initiation and development of glandular trichomes in Artemisia annua. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 339:111959. [PMID: 38101619 DOI: 10.1016/j.plantsci.2023.111959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 11/05/2023] [Accepted: 12/11/2023] [Indexed: 12/17/2023]
Abstract
Glandular trichomes are specialized structures found on the surface of plants to produce specific compounds, including terpenes, alkaloids, and other organic substances. Artemisia annua, commonly known as sweet wormwood, synthesizes and stores the antimalarial drug artemisinin in glandular trichomes. Previous research indicated that increasing the glandular trichome density could enhance artemisinin production, and the cuticle synthesis affected the initiation and development of glandular trichomes in A. annua. In this study, AaABCG12 and AaABCG20 were isolated from A. annua that exhibited similar expression patterns to artemisinin biosynthetic genes. Of the two, AaABCG20 acted as a specific transporter in glandular trichomes. Downregulating the expression of AaABCG20 resulted in a notable reduction in the density of glandular trichome, while overexpressing AaABCG20 resulted in an increase in glandular trichome density. GC-MS analysis demonstrated that AaABCG20 was responsible for the transport of cutin and wax in A. annua. These findings indicated that AaABCG20 influenced the initiation and development of glandular trichomes through transporting cutin and wax in A. annua. This glandular trichome specific half-size ABCG-type transporter is crucial in facilitating the transportation of cutin and wax components, ultimately contributing to the successful initiation and development of glandular trichomes.
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Affiliation(s)
- Xueqing Fu
- School of Design, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Han Zheng
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic & Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yuting Wang
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic & Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hang Liu
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic & Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Pin Liu
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic & Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ling Li
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic & Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jingya Zhao
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic & Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaofen Sun
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic & Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Kexuan Tang
- Frontiers Science Center for Transformative Molecules, Joint International Research Laboratory of Metabolic & Developmental Sciences, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
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Huang J, Xu J, Wu R, Wang J, Yang J, Li Y, Wang B, Xiong W, Guo Y. Influence of Cuticular Waxes from Triticale on Rumen Fermentation: A Metabolomic and Microbiome Profiling Study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:1592-1606. [PMID: 38198510 DOI: 10.1021/acs.jafc.3c07416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Cuticular wax, a critical defense layer for plants, remains a relatively unexplored factor in rumen fermentation. We investigated the impact of cuticular wax on rumen fermentation using triticale as a model. In total, six wax classes were identified, including fatty acids, aldehydes, alkane, primary alcohol, alkyresorcinol, and β-diketone, with low-bloom lines predominated by 46.05% of primary alcohols and high-bloom lines by 35.64% of β-diketone. Low-wax addition (2.5 g/kg DM) increased the gas production by 19.25% (P < 0.05) and total volatile fatty acids by 6.34% (P > 0.05), and enriched key carbohydrate-fermenting rumen microbes like Saccharofermentans, Ruminococcus, and Prevotellaceae, when compared to non-wax groups. Metabolites linked to nucleotide metabolism, purine metabolism, and protein/fat digestion in the rumen showed a positive correlation with low-wax, benefiting rumen microbes. This study highlights the intricate interplay among cuticular wax, rumen microbiota, fermentation, and metabolomics in forage digestion, providing insights into livestock nutrition and forage utilization.
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Affiliation(s)
- Jiahao Huang
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao 266109, P. R. China
- Key Laboratory of National Forestry and Grassland Administration on Grassland Resources and Ecology in the Yellow River Delta, College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, P. R. China
| | - Jiawei Xu
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao 266109, P. R. China
- College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, P. R. China
| | - Ruixin Wu
- Dry-Land Farming Institute of Hebei Academy of Agricultural and Forestry Sciences, Hengshui 053000, P. R. China
| | - Jinjing Wang
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao 266109, P. R. China
- Key Laboratory of National Forestry and Grassland Administration on Grassland Resources and Ecology in the Yellow River Delta, College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, P. R. China
| | - Jianfeng Yang
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao 266109, P. R. China
- Key Laboratory of National Forestry and Grassland Administration on Grassland Resources and Ecology in the Yellow River Delta, College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, P. R. China
| | - Yuan Li
- Dry-Land Farming Institute of Hebei Academy of Agricultural and Forestry Sciences, Hengshui 053000, P. R. China
| | - Bo Wang
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao 266109, P. R. China
- Key Laboratory of National Forestry and Grassland Administration on Grassland Resources and Ecology in the Yellow River Delta, College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, P. R. China
| | - Wangdan Xiong
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao 266109, P. R. China
- Key Laboratory of National Forestry and Grassland Administration on Grassland Resources and Ecology in the Yellow River Delta, College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, P. R. China
- Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University, Dongying 257091, P. R. China
| | - Yanjun Guo
- Qingdao Key Laboratory of Specialty Plant Germplasm Innovation and Utilization in Saline Soils of Coastal Beach, Qingdao Agricultural University, Qingdao 266109, P. R. China
- Key Laboratory of National Forestry and Grassland Administration on Grassland Resources and Ecology in the Yellow River Delta, College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, P. R. China
- Academy of Dongying Efficient Agricultural Technology and Industry on Saline and Alkaline Land in Collaboration with Qingdao Agricultural University, Dongying 257091, P. R. China
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Yamaguchi T. Exploration and utilization of novel aldoxime, nitrile, and nitro compounds metabolizing enzymes from plants and arthropods. Biosci Biotechnol Biochem 2024; 88:138-146. [PMID: 38017623 DOI: 10.1093/bbb/zbad168] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 11/21/2023] [Indexed: 11/30/2023]
Abstract
Aldoxime (R1R2C=NOH) and nitrile (R-C≡N) are nitrogen-containing compounds that are found in species representing all kingdoms of life. The enzymes discovered from the microbial "aldoxime-nitrile" pathway (aldoxime dehydratase, nitrile hydratase, amidase, and nitrilase) have been thoroughly studied because of their industrial importance. Although plants utilize cytochrome P450 monooxygenases to produce aldoxime and nitrile, many biosynthetic pathways are yet to be studied. Cyanogenic millipedes accumulate various nitrile compounds, such as mandelonitrile. However, no such aldoxime- and nitrile-metabolizing enzymes have been identified in millipedes. Here, I review the exploration of novel enzymes from plants and millipedes with characteristics distinct from those of microbial enzymes, the catalysis of industrially useful reactions, and applications of these enzymes for nitrile compound production.
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Affiliation(s)
- Takuya Yamaguchi
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University , Imizu, Toyama, Japan
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49
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Seliem MK, Taha NA, El-Feky NI, Abdelaal K, El-Ramady H, El-Mahrouk ME, Bayoumi YA. Evaluation of Five Chrysanthemum morifolium Cultivars against Leaf Blight Disease Caused by Alternaria alternata at Rooting and Seedling Growth Stages. PLANTS (BASEL, SWITZERLAND) 2024; 13:252. [PMID: 38256805 PMCID: PMC10820434 DOI: 10.3390/plants13020252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/12/2024] [Accepted: 01/13/2024] [Indexed: 01/24/2024]
Abstract
During the winter of 2018, leaf blight on florist's daisy (Chrysanthemum morifolium L.) was noticed in Egypt. The disease, which was identified as caused by Alternaria alternata, was widely spread and led to serious damage for the exportation sector of this crop. Therefore, a study was conducted to better understand what can be conducted to minimize the problem in the future. Isolates were gathered and evaluated on five chrysanthemum cultivars (i.e., 'Feeling Green Dark', 'Talitha', 'Chrystal Regan', 'Arctic queen', and 'Podolsk Purple') grown in a greenhouse. The objectives were to isolate and identify the phytopathogen and detect the resistant degree of these cultivars with emphasis on the early growth stages of the crop. The results showed that 'Podolsk Purple' was the most resistant cultivar against the different isolates during the rooting and seedling growth stages. 'Chrystal Regan' was very susceptible to the different isolates. In addition, the isolate from 'Feeling Green Dark' was the strongest, which negatively affected the chlorophyll content and its fluorescence parameters besides other measured vegetative and anatomical features. The findings indicated that the best anatomical characters of the stem and leaf, like the thickness of cuticle and cortex, stem diameter, xylem vessel diameter, and thickness of epidermis as well as lamina thickness were recorded in the 'Podolsk Purple' cultivar. This study highlighted that by using the right cultivars, chrysanthemum can be cultivated during the winter season under Egyptian conditions. These results can be a part of solution to overcome the leaf blight caused by A. alternata on chrysanthemum during the early growing stages.
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Affiliation(s)
- Mayada K. Seliem
- Ornamental and Floriculture Department, Horticulture Research Institute, El-Sabahia, Alexandria 21599, Egypt;
| | - Naglaa A. Taha
- Plant Pathology Research Institute, Agriculture Research Center, Giza 12619, Egypt; (N.A.T.); (N.I.E.-F.)
| | - Nahla I. El-Feky
- Plant Pathology Research Institute, Agriculture Research Center, Giza 12619, Egypt; (N.A.T.); (N.I.E.-F.)
| | - Khaled Abdelaal
- EPCRS Excellence Center, Plant Pathology and Biotechnology Lab., Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt;
| | - Hassan El-Ramady
- Soil and Water Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Mohammed E. El-Mahrouk
- Horticulture Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt;
| | - Yousry A. Bayoumi
- Horticulture Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt;
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50
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Hua Z, Zhang T, Luo J, Bai H, Ma S, Qiang H, Guo X. Internalization, physiological responses and molecular mechanisms of lettuce to polystyrene microplastics of different sizes: Validation of simulated soilless culture. JOURNAL OF HAZARDOUS MATERIALS 2024; 462:132710. [PMID: 37832437 DOI: 10.1016/j.jhazmat.2023.132710] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/12/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023]
Abstract
Microplastics (MPs) exists widely in the environment, and the resulting pollution of MPs has become a global environmental problem. Plants can absorb MPs through their roots. However, studies on the mechanism of the effect of root exposure to different size MPs on vegetables are limited. Here, we use Polystyrene (PS) MPs with different particle sizes to investigate the internalization, physiological response and molecular mechanism of lettuce to MPs. MPs may accumulate in large amounts in lettuce roots and migrate to the aboveground part through the vascular bundle, while small particle size MPs (SMPs, 100 nm) have stronger translocation ability than large particle size MPs (LMPs, 500 nm). MPs can cause physiological and biochemical responses and transcriptome changes in lettuce. SMPs and LMPs resulted in reduced biomass (38.27 % and 48.22 % reduction in fresh weight); caused oxidative stress (59.33 % and 47.74 % upregulation of SOD activity in roots) and differential gene expression (605 and 907 DEGs). Signal transduction, membrane transport and alteration of synthetic and metabolic pathways may be the main causes of physiological toxicity of lettuce. Our study provides important information for understanding the behavior and fate of MPs in edible vegetables, especially the physiological toxicity of MPs to edible vegetables, in order to assess the potential threat of MPs to food safety and agricultural sustainable development.
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Affiliation(s)
- Zhengdong Hua
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Tianli Zhang
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Junqi Luo
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Haoduo Bai
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Sirui Ma
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China
| | - Hong Qiang
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, China
| | - Xuetao Guo
- College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, Yangling 712100, China.
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