101
|
Lu R, Li Y, Zhang J, Wang Y, Zhang J, Li Y, Zheng Y, Li XB. The bHLH/HLH transcription factors GhFP2 and GhACE1 antagonistically regulate fiber elongation in cotton. PLANT PHYSIOLOGY 2022; 189:628-643. [PMID: 35226094 PMCID: PMC9157132 DOI: 10.1093/plphys/kiac088] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 01/31/2022] [Indexed: 06/01/2023]
Abstract
Basic helix-loop-helix/helix-loop-helix (bHLH/HLH) transcription factors play important roles in cell elongation in plants. However, little is known about how bHLH/HLH transcription factors antagonistically regulate fiber elongation in cotton (Gossypium hirsutum). In this study, we report that two bHLH/HLH transcription factors, fiber-related protein 2 (GhFP2) and ACTIVATOR FOR CELL ELONGATION 1 (GhACE1), function in fiber development of cotton. GhFP2 is an atypical bHLH protein without the basic region, and its expression is regulated by brassinosteroid (BR)-related BRASSINAZOLE RESISTANT 1 (GhBZR1). Overexpression of GhFP2 in cotton hindered fiber elongation, resulting in shortened fiber length. In contrast, suppression of GhFP2 expression in cotton promoted fiber development, leading to longer fibers compared with the wild-type. GhFP2 neither contains a DNA-binding domain nor has transcriptional activation activity. Furthermore, we identified GhACE1, a bHLH protein that interacts with GhFP2 and positively regulates fiber elongation. GhACE1 could bind to promoters of plasma membrane intrinsic protein 2;7 (GhPIP2;7) and expansions 8 (GhEXP8) for directly activating their expression, but the interaction between GhFP2 and GhACE1 suppressed transcriptional activation of these target genes by GhACE1. Taken together, our results indicate that GhACE1 promotes fiber elongation by activating expressions of GhPIP2;7 and GhEXP8, but its transcription activation on downstream genes may be obstructed by BR-modulated GhFP2. Thus, our data reveal a key mechanism for fiber cell elongation through a pair of antagonizing HLH/bHLH transcription factors in cotton.
Collapse
Affiliation(s)
- Rui Lu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Yang Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Jiao Zhang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Yao Wang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Jie Zhang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Yu Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Yong Zheng
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Xue-Bao Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan 430079, China
| |
Collapse
|
102
|
Yang YY, Shan W, Yang TW, Wu CJ, Liu XC, Chen JY, Lu WJ, Li ZG, Deng W, Kuang JF. MaMYB4 is a negative regulator and a substrate of RING-type E3 ligases MaBRG2/3 in controlling banana fruit ripening. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:1651-1669. [PMID: 35395128 DOI: 10.1111/tpj.15762] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/14/2022] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
Fruit ripening is a complex developmental process, which is modulated by both transcriptional and post-translational events. Control of fruit ripening is important in maintaining moderate quality traits and minimizing postharvest deterioration. In this study, we discovered that the transcription factor MaMYB4 acts as a negative regulator of fruit ripening in banana. The protein levels of MaMYB4 decreased gradually with banana fruit ripening, paralleling ethylene production, and decline in firmness. DNA affinity purification sequencing combined with RNA-sequencing analyses showed that MaMYB4 preferentially binds to the promoters of various ripening-associated genes including ethylene biosynthetic and cell wall modifying genes. Furthermore, ectopic expression of MaMYB4 in tomato delayed tomato fruit ripening, which was accompanied by downregulation of ethylene biosynthetic and cell wall modifying genes. Importantly, two RING finger E3 ligases MaBRG2/3, whose protein accumulation increased progressively with fruit ripening, were found to interact with and ubiquitinate MaMYB4, contributing to decreased accumulation of MaMYB4 during fruit ripening. Transient overexpression of MaMYB4 and MaBRG2/3 in banana fruit ripening delayed or promoted fruit ripening by inhibiting or stimulating ethylene biosynthesis, respectively. Taken together, we demonstrate that MaMYB4 negatively modulates banana fruit ripening, and that MaMYB4 abundance could be regulated by protein ubiquitination, thus providing insights into the role of MaMYB4 in controlling fruit ripening at both transcriptional and post-translational levels.
Collapse
Affiliation(s)
- Ying-Ying Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticultural Science, South China Agricultural University, Guangzhou, 510642, China
| | - Wei Shan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticultural Science, South China Agricultural University, Guangzhou, 510642, China
| | - Tian-Wei Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticultural Science, South China Agricultural University, Guangzhou, 510642, China
| | - Chao-Jie Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticultural Science, South China Agricultural University, Guangzhou, 510642, China
| | - Xun-Cheng Liu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Jian-Ye Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticultural Science, South China Agricultural University, Guangzhou, 510642, China
| | - Wang-Jin Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticultural Science, South China Agricultural University, Guangzhou, 510642, China
| | - Zheng-Guo Li
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing, 400044, China
| | - Wei Deng
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing, 400044, China
| | - Jian-Fei Kuang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticultural Science, South China Agricultural University, Guangzhou, 510642, China
| |
Collapse
|
103
|
Fedoreyeva LI, Baranova EN, Chaban IA, Dilovarova TA, Vanyushin BF, Kononenko NV. Elongating Effect of the Peptide AEDL on the Root of Nicotiana tabacum under Salinity. PLANTS 2022; 11:plants11101352. [PMID: 35631778 PMCID: PMC9147445 DOI: 10.3390/plants11101352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/12/2022] [Accepted: 05/13/2022] [Indexed: 11/18/2022]
Abstract
The overall survival of a plant depends on the development, growth, and functioning of the roots. Root development and growth are not only genetically programmed but are constantly influenced by environmental factors, with the roots adapting to such changes. The peptide AEDL (alanine–glutamine acid–asparagine acid–leucine) at a concentration of 10−7 M had an elongating effect on the root cells of Nicotiana tabacum seedlings. The action of this peptide at such a low concentration is similar to that of peptide phytohormones. In the presence of 150 mM NaCl, a strong distortion in the development and architecture of the tobacco roots was observed. However, the combined presence of AEDL and NaCl resulted in normal root development. In the presence of AEDL, reactive oxygen species (ROS) were detected in the elongation and root hair zones of the roots. The ROS marker fluorescence intensity in plant cells grown with AEDL was much lower than that of plant cells grown without the peptide. Thus, AEDL protected the root tissue from damage by oxidative stress caused by the toxic effects of NaCl. Localization and accumulation of AEDL at the root were tissue-specific. Fluorescence microscopy showed that FITC-AEDL predominantly localized in the zones of elongation and root hairs, with insignificant localization in the meristem zone. AEDL induced a change in the structural organization of chromatin. Structural changes in chromatin caused significant changes in the expression of numerous genes associated with the development and differentiation of the root system. In the roots of tobacco seedlings grown in the presence of AEDL, the expression of WOX family genes decreased, and differentiation of stem cells increased, which led to root elongation. However, in the presence of NaCl, elongation of the tobacco root occurred via a different mechanism involving genes of the expansin family that weaken the cell wall in the elongation zone. Root elongation of plants is of fundamental importance in biology and is especially relevant to crop production as it can affect crop yields.
Collapse
Affiliation(s)
- Larisa I. Fedoreyeva
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia; (E.N.B.); (I.A.C.); (T.A.D.); (B.F.V.); (N.V.K.)
- Correspondence:
| | - Ekaterina N. Baranova
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia; (E.N.B.); (I.A.C.); (T.A.D.); (B.F.V.); (N.V.K.)
- N.V. Tsitsin Main Botanical Garden of Russian Academy of Sciences, Botanicheskaya 4, 127276 Moscow, Russia
| | - Inn A. Chaban
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia; (E.N.B.); (I.A.C.); (T.A.D.); (B.F.V.); (N.V.K.)
| | - Tatyana A. Dilovarova
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia; (E.N.B.); (I.A.C.); (T.A.D.); (B.F.V.); (N.V.K.)
| | - Boris F. Vanyushin
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia; (E.N.B.); (I.A.C.); (T.A.D.); (B.F.V.); (N.V.K.)
- A.N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia
| | - Neonila V. Kononenko
- All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya 42, 127550 Moscow, Russia; (E.N.B.); (I.A.C.); (T.A.D.); (B.F.V.); (N.V.K.)
| |
Collapse
|
104
|
Mafa MS, Rufetu E, Alexander O, Kemp G, Mohase L. Cell-wall structural carbohydrates reinforcements are part of the defence mechanisms of wheat against Russian wheat aphid (Diuraphis noxia) infestation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 179:168-178. [PMID: 35358867 DOI: 10.1016/j.plaphy.2022.03.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Russian wheat aphid (RWA) is one of the most challenging pests for wheat crops globally. In South Africa, RWA has breached the strategy of introducing resistant genes into wheat plants, and so far, five RWA biotypes with different virulence levels have been documented in the field. Our study investigated how the cell wall plays a defensive role in Tugela-Dn1 (susceptible) and-Dn5 (resistant) cultivars infested with South African RWA-biotype 2 (RWASA2). The activities of enzymes related to defense responses were measured. The cell wall's holo-cellulose content, soluble lignin and physicochemical changes were quantified in the infested susceptible and resistant cultivars. Lastly, in vitro RWASA2 saliva-associated CWDEs activity was determined on cell wall-related model substrates. The results show that apoplastic peroxidase and β-1,3-glucanase activities were significantly higher in Tugela-Dn5 relative to the control during the infestation periods. Peroxidase activity is associated with lignin cross-linking of the cell wall, which could deter RWASA2 feeding. The total phenolic and holo-cellulose contents were significantly induced in Tugela-Dn5 at 72 and 120 h post infestation (hpi). These findings were corroborated by the FTIR results, which showed that holocellulose and lignin regions of the resistant and susceptible wheat were affected by infestation at 72 hpi. However, Tugela-Dn5 reinforced cell wall content at 120 hpi. An increased crystallinity index in the resistant cultivar validated the cell wall reinforcement at 120 hpi, while Tugela-Dn1 delayed cell wall reinforcement. This study demonstrates that cell wall reinforcement's modification is part of defense responses against Russian wheat aphid infestation.
Collapse
Affiliation(s)
- Mpho S Mafa
- Carbohydrates and Enzymology Laboratory (CHEM-LAB), Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa.
| | - Ellen Rufetu
- Carbohydrates and Enzymology Laboratory (CHEM-LAB), Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa; Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
| | - Orbett Alexander
- Department of Chemistry, University of the Free State, 9301, Bloemfontein, South Africa
| | - Gabre Kemp
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, South Africa
| | - Lintle Mohase
- Department of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa
| |
Collapse
|
105
|
Feng X, Li C, He F, Xu Y, Li L, Wang X, Chen Q, Li F. Genome-Wide Identification of Expansin Genes in Wild Soybean ( Glycine soja) and Functional Characterization of Expansin B1 ( GsEXPB1) in Soybean Hair Root. Int J Mol Sci 2022; 23:5407. [PMID: 35628217 PMCID: PMC9140629 DOI: 10.3390/ijms23105407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/10/2022] [Accepted: 05/10/2022] [Indexed: 11/30/2022] Open
Abstract
Wild soybean, the progenitor and close relative of cultivated soybean, has an excellent environmental adaptation ability and abundant resistance genes. Expansins, as a class of cell wall relaxation proteins, have important functions in regulating plant growth and stress resistance. In the present study, we identified a total of 75 members of the expansin family on the basis of recent genomic data published for wild soybean. The predicted results of promoter elements structure showed that wild soybean expansin may be associated with plant hormones, stress responses, and growth. Basal transcriptome data of vegetative organs suggest that the transcription of expansin members has some organ specificity. Meanwhile, the transcripts of some members had strong responses to salt, low temperature and drought stress. We screened and obtained an expansin gene, GsEXPB1, which is transcribed specifically in roots and actively responds to salt stress. The results of A. tumefaciens transient transfection showed that this protein was localized in the cell wall of onion epidermal cells. We initially analyzed the function of GsEXPB1 by a soybean hairy root transformation assay and found that overexpression of GsEXPB1 significantly increased the number of hairy roots, root length, root weight, and the tolerance to salt stress. This research provides a foundation for subsequent studies of expansins in wild soybean.
Collapse
Affiliation(s)
- Xu Feng
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Cuiting Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Fumeng He
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Yongqing Xu
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Li Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Xue Wang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Qingshan Chen
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Fenglan Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| |
Collapse
|
106
|
Priatama RA, Heo J, Kim SH, Rajendran S, Yoon S, Jeong DH, Choo YK, Bae JH, Kim CM, Lee YH, Demura T, Lee YK, Choi EY, Han CD, Park SJ. Narrow lpa1 Metaxylems Enhance Drought Tolerance and Optimize Water Use for Grain Filling in Dwarf Rice. FRONTIERS IN PLANT SCIENCE 2022; 13:894545. [PMID: 35620680 PMCID: PMC9127761 DOI: 10.3389/fpls.2022.894545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/19/2022] [Indexed: 05/31/2023]
Abstract
Rice cultivation needs extensive amounts of water. Moreover, increased frequency of droughts and water scarcity has become a global concern for rice cultivation. Hence, optimization of water use is crucial for sustainable agriculture. Here, we characterized Loose Plant Architecture 1 (LPA1) in vasculature development, water transport, drought resistance, and grain yield. We performed genetic combination of lpa1 with semi-dwarf mutant to offer the optimum rice architecture for more efficient water use. LPA1 expressed in pre-vascular cells of leaf primordia regulates genes associated with carbohydrate metabolism and cell enlargement. Thus, it plays a role in metaxylem enlargement of the aerial organs. Narrow metaxylem of lpa1 exhibit leaves curling on sunny day and convey drought tolerance but reduce grain yield in mature plants. However, the genetic combination of lpa1 with semi-dwarf mutant (dep1-ko or d2) offer optimal water supply and drought resistance without impacting grain-filling rates. Our results show that water use, and transports can be genetically controlled by optimizing metaxylem vessel size and plant height, which may be utilized for enhancing drought tolerance and offers the potential solution to face the more frequent harsh climate condition in the future.
Collapse
Affiliation(s)
- Ryza A. Priatama
- Division of Applied Life Science (BK21 Program), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, Jinju, South Korea
- Institute of Plasma Technology, Korea Institute of Fusion Energy, Gunsan, South Korea
| | - Jung Heo
- Division of Biological Sciences and Research Institute for Basic Science, Wonkwang University, Iksan, South Korea
| | - Sung Hoon Kim
- Division of Applied Life Science (BK21 Program), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, Jinju, South Korea
- Environmental Exposure & Toxicology Research Center, Korea Institute of Toxicology, Jinju, South Korea
| | - Sujeevan Rajendran
- Division of Biological Sciences and Research Institute for Basic Science, Wonkwang University, Iksan, South Korea
| | - Seoa Yoon
- Department of Horticulture Industry, Wonkwang University, Iksan, South Korea
| | - Dong-Hoon Jeong
- Department of Life Science and Multidisciplinary Genome Institute, Hallym University, Chuncheon, South Korea
| | - Young-Kug Choo
- Division of Biological Sciences and Research Institute for Basic Science, Wonkwang University, Iksan, South Korea
| | - Jong Hyang Bae
- Department of Horticulture Industry, Wonkwang University, Iksan, South Korea
| | - Chul Min Kim
- Department of Horticulture Industry, Wonkwang University, Iksan, South Korea
| | - Yeon Hee Lee
- National Institute of Agricultural Biotechnology, Suwon, South Korea
| | - Taku Demura
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Japan
| | - Young Koung Lee
- Institute of Plasma Technology, Korea Institute of Fusion Energy, Gunsan, South Korea
| | - Eun-Young Choi
- Department of Agricultural Science, Korea National Open University, Seoul, South Korea
| | - Chang-deok Han
- Division of Applied Life Science (BK21 Program), Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, Jinju, South Korea
| | - Soon Ju Park
- Division of Biological Sciences and Research Institute for Basic Science, Wonkwang University, Iksan, South Korea
| |
Collapse
|
107
|
Reim S, Winkelmann T, Cestaro A, Rohr AD, Flachowsky H. Identification of Candidate Genes Associated With Tolerance to Apple Replant Disease by Genome-Wide Transcriptome Analysis. Front Microbiol 2022; 13:888908. [PMID: 35615498 PMCID: PMC9125221 DOI: 10.3389/fmicb.2022.888908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 03/29/2022] [Indexed: 12/03/2022] Open
Abstract
Apple replant disease (ARD) is a worldwide economic risk in apple cultivation for fruit tree nurseries and fruit growers. Several studies on the reaction of apple plants to ARD are documented but less is known about the genetic mechanisms behind this symptomatology. RNA-seq analysis is a powerful tool for revealing candidate genes that are involved in the molecular responses to biotic stresses in plants. The aim of our work was to find differentially expressed genes in response to ARD in Malus. For this, we compared transcriptome data of the rootstock ‘M9’ (susceptible) and the wild apple genotype M. ×robusta 5 (Mr5, tolerant) after cultivation in ARD soil and disinfected ARD soil, respectively. When comparing apple plantlets grown in ARD soil to those grown in disinfected ARD soil, 1,206 differentially expressed genes (DEGs) were identified based on a log2 fold change, (LFC) ≥ 1 for up– and ≤ −1 for downregulation (p < 0.05). Subsequent validation revealed a highly significant positive correlation (r = 0.91; p < 0.0001) between RNA-seq and RT-qPCR results indicating a high reliability of the RNA-seq data. PageMan analysis showed that transcripts of genes involved in gibberellic acid (GA) biosynthesis were significantly enriched in the DEG dataset. Most of these GA biosynthesis genes were associated with functions in cell wall stabilization. Further genes were related to detoxification processes. Genes of both groups were expressed significantly higher in Mr5, suggesting that the lower susceptibility to ARD in Mr5 is not due to a single mechanism. These findings contribute to a better insight into ARD response in susceptible and tolerant apple genotypes. However, future research is needed to identify the defense mechanisms, which are most effective for the plant to overcome ARD.
Collapse
Affiliation(s)
- Stefanie Reim
- Julius Kühn-Institut (JKI) - Federal Research Centre for Cultivated Plants, Institute for Breeding Research on Fruit Crops, Dresden, Germany
- *Correspondence: Stefanie Reim,
| | - Traud Winkelmann
- Woody Plant and Propagation Physiology Section, Institute of Horticultural Production Systems, Leibniz University Hannover, Hanover, Germany
| | - Alessandro Cestaro
- Computational Biology Unit, Fondazione Edmund Mach, San Michele all’Adige, Italy
| | - Annmarie-Deetja Rohr
- Woody Plant and Propagation Physiology Section, Institute of Horticultural Production Systems, Leibniz University Hannover, Hanover, Germany
| | - Henryk Flachowsky
- Julius Kühn-Institut (JKI) - Federal Research Centre for Cultivated Plants, Institute for Breeding Research on Fruit Crops, Dresden, Germany
| |
Collapse
|
108
|
Alem AL, Ariel FD, Cho Y, Hong JC, Gonzalez DH, Viola IL. TCP15 interacts with GOLDEN2-LIKE 1 to control cotyledon opening in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:748-763. [PMID: 35132717 DOI: 10.1111/tpj.15701] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 12/23/2021] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
After germination, exposure to light promotes the opening and expansion of the cotyledons and the development of the photosynthetic apparatus in a process called de-etiolation. This process is crucial for seedling establishment and photoautotrophic growth. TEOSINTE BRANCHED 1, CYCLOIDEA, and PROLIFERATING CELL FACTORS (TCP) transcription factors are important developmental regulators of plant responses to internal and external signals that are grouped into two main classes. In this study, we identified GOLDEN2-LIKE 1 (GLK1), a key transcriptional regulator of photomorphogenesis, as a protein partner of class I TCPs during light-induced cotyledon opening and expansion in Arabidopsis. The class I TCP TCP15 and GLK1 are mutually required for cotyledon opening and the induction of SAUR and EXPANSIN genes, involved in cell expansion. TCP15 also participates in the expression of photosynthesis-associated genes regulated by GLK1, like LHCB1.4 and LHCB2.2. Furthermore, GLK1 and TCP15 bind to the same promoter regions of different target genes containing either GLK or TCP binding motifs and binding of TCP15 is affected in a GLK1-deficient background, suggesting that a complex between TCP15 and GLK1 participates in the induction of these genes. We postulate that GLK1 helps to recruit TCP15 for the modulation of cell expansion genes in cotyledons and that the functional interaction between these transcription factors may serve to coordinate the expression of cell expansion genes with that of genes involved in the development of the photosynthetic apparatus.
Collapse
Affiliation(s)
- Antonela L Alem
- Facultad de Bioquímica y Ciencias Biológicas, Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Universidad Nacional del Litoral, 3000, Santa Fe, Argentina
| | - Federico D Ariel
- Facultad de Bioquímica y Ciencias Biológicas, Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Universidad Nacional del Litoral, 3000, Santa Fe, Argentina
| | - Yuhan Cho
- Division of Life Science and Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, 501 Jinju-daero, Jinju, 52828, South Korea
| | - Jong Chan Hong
- Division of Life Science and Applied Life Science (BK21 Four Program), Plant Molecular Biology and Biotechnology Research Center, Gyeongsang National University, 501 Jinju-daero, Jinju, 52828, South Korea
| | - Daniel H Gonzalez
- Facultad de Bioquímica y Ciencias Biológicas, Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Universidad Nacional del Litoral, 3000, Santa Fe, Argentina
| | - Ivana L Viola
- Facultad de Bioquímica y Ciencias Biológicas, Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Universidad Nacional del Litoral, 3000, Santa Fe, Argentina
| |
Collapse
|
109
|
Edelmann HG. Plant root development: is the classical theory for auxin-regulated root growth false? PROTOPLASMA 2022; 259:823-832. [PMID: 34515860 PMCID: PMC9010396 DOI: 10.1007/s00709-021-01697-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/07/2021] [Indexed: 06/13/2023]
Abstract
One of the longest standing theories and, therein-based, regulation-model of plant root development, posits the inhibitory action of auxin (IAA, indolylacetic acid) on elongation growth of root cells. This effect, as induced by exogenously supplied IAA, served as the foundation stone for root growth regulation. For decades, auxin ruled the day and only allowed hormonal side players to be somehow involved, or in some way affected. However, this copiously reiterated, apparent cardinal role of auxin only applies in roots immersed in solutions; it vanishes as soon as IAA-supplied roots are not surrounded by liquid. When roots grow in humid air, exogenous IAA has no inhibitory effect on elongation growth of maize roots, regardless of whether it is applied basipetally from the top of the root or to the entire residual seedling immersed in IAA solution. Nevertheless, such treatment leads to pronounced root-borne ethylene emission and lateral rooting, illustrating and confirming thereby induced auxin presence and its effect on the root - yet, not on root cell elongation. Based on these findings, a new root growth regulatory model is proposed. In this model, it is not IAA, but IAA-triggered ethylene which plays the cardinal regulatory role - taking effect, or not - depending on the external circumstances. In this model, in water- or solution-incubated roots, IAA-dependent ethylene acts due to its accumulation within the root proper by inhibited/restrained diffusion into the liquid phase. In roots exposed to moist air or gas, there is no effect on cell elongation, since IAA-triggered ethylene diffuses out of the root without an impact on growth.
Collapse
Affiliation(s)
- Hans G Edelmann
- Institut für Biologiedidaktik, Universität zu Köln, Cologne, Germany.
| |
Collapse
|
110
|
Ding C, Shen T, Ran N, Zhang H, Pan H, Su X, Xu M. Integrated Degradome and Srna Sequencing Revealed miRNA-mRNA Regulatory Networks between the Phloem and Developing Xylem of Poplar. Int J Mol Sci 2022; 23:ijms23094537. [PMID: 35562928 PMCID: PMC9100975 DOI: 10.3390/ijms23094537] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 03/27/2022] [Accepted: 04/14/2022] [Indexed: 02/04/2023] Open
Abstract
Lignin and cellulose are the most abundant natural organic polymers in nature. MiRNAs are a class of regulatory RNAs discovered in mammals, plants, viruses, and bacteria. Studies have shown that miRNAs play a role in lignin and cellulose biosynthesis by targeting key enzymes. However, the specific miRNAs functioning in the phloem and developing xylem of Populus deltoides are still unknown. In this study, a total of 134 miRNAs were identified via high-throughput small RNA sequencing, including 132 known and two novel miRNAs, six of which were only expressed in the phloem. A total of 58 differentially expressed miRNAs (DEmiRNAs) were identified between the developing xylem and the phloem. Among these miRNAs, 21 were significantly upregulated in the developing xylem in contrast to the phloem and 37 were significantly downregulated. A total of 2431 target genes of 134 miRNAs were obtained via high-throughput degradome sequencing. Most target genes of these miRNAs were transcription factors, including AP2, ARF, bHLH, bZIP, GRAS, GRF, MYB, NAC, TCP, and WRKY genes. Furthermore, 13 and nine miRNAs were involved in lignin and cellulose biosynthesis, respectively, and we validated the miRNAs via qRT-PCR. Our study explores these miRNAs and their regulatory networks in the phloem and developing xylem of P.deltoides and provides new insight into wood formation.
Collapse
Affiliation(s)
- Changjun Ding
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;
| | - Tengfei Shen
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China; (T.S.); (N.R.); (H.Z.); (H.P.)
| | - Na Ran
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China; (T.S.); (N.R.); (H.Z.); (H.P.)
| | - Heng Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China; (T.S.); (N.R.); (H.Z.); (H.P.)
| | - Huixin Pan
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China; (T.S.); (N.R.); (H.Z.); (H.P.)
| | - Xiaohua Su
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;
- Correspondence: (X.S.); (M.X.); Tel.: +86-136-4130-7199 (X.S.); +86-150-9430-7586 (M.X.)
| | - Meng Xu
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics and Biotechnology of Ministry of Education, Nanjing Forestry University, Nanjing 210037, China; (T.S.); (N.R.); (H.Z.); (H.P.)
- Correspondence: (X.S.); (M.X.); Tel.: +86-136-4130-7199 (X.S.); +86-150-9430-7586 (M.X.)
| |
Collapse
|
111
|
Tian X, Niu X, Chang Z, Zhang X, Wang R, Yang Q, Li G. DUF1005 Family Identification, Evolution Analysis in Plants, and Primary Root Elongation Regulation of CiDUF1005 From Caragana intermedia. Front Genet 2022; 13:807293. [PMID: 35422842 PMCID: PMC9001952 DOI: 10.3389/fgene.2022.807293] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 02/08/2022] [Indexed: 11/13/2022] Open
Abstract
Proteins with a domain of unknown function (DUF) represent a number of gene families that encode functionally uncharacterized proteins in eukaryotes. In particular, members of the DUF1005 family in plants have a 411-amino-acid conserved domain, and this family has not been described previously. In this study, a total of 302 high-confidence DUF1005 family members were identified from 58 plant species, and none were found in the four algae that were selected. Thus, this result showed that DUF1005s might belong to a kind of plant-specific gene family, and this family has not been evolutionarily expanded. Phylogenetic analysis showed that the DUF1005 family genes could be classified into four subgroups in 58 plant species. The earliest group to emerge was Group I, including a total of 100 gene sequences, and this group was present in almost all selected species spanning from mosses to seed plants. Group II and Group III, with 69 and 74 members, respectively, belong to angiosperms. Finally, with 59 members, Group IV was the last batch of genes to emerge, and this group is unique to dicotyledons. Expression pattern analysis of the CiDUF1005, a member of the DUF1005 family from Caragana intermedia, showed that CiDUF1005 genes were differentially regulated under various treatments. Compared to the wild type, transgenic lines with heterologous CiDUF1005 expression in Arabidopsis thaliana had longer primary roots and more lateral roots. These results expanded our knowledge of the evolution of the DUF1005 family in plants and will contribute to elucidating biological functions of the DUF1005 family in the future.
Collapse
Affiliation(s)
- Xiaona Tian
- Inner Mongolia Key Laboratory of Plant Stress Physiology and Molecular Biology, Inner Mongolia Agricultural University, Hohhot, China
| | - Xiaocui Niu
- Inner Mongolia Key Laboratory of Plant Stress Physiology and Molecular Biology, Inner Mongolia Agricultural University, Hohhot, China
| | - Ziru Chang
- Inner Mongolia Key Laboratory of Plant Stress Physiology and Molecular Biology, Inner Mongolia Agricultural University, Hohhot, China
| | - Xiujuan Zhang
- Inner Mongolia Key Laboratory of Plant Stress Physiology and Molecular Biology, Inner Mongolia Agricultural University, Hohhot, China
| | - Ruigang Wang
- Inner Mongolia Key Laboratory of Plant Stress Physiology and Molecular Biology, Inner Mongolia Agricultural University, Hohhot, China
| | - Qi Yang
- Inner Mongolia Key Laboratory of Plant Stress Physiology and Molecular Biology, Inner Mongolia Agricultural University, Hohhot, China
| | - Guojing Li
- Inner Mongolia Key Laboratory of Plant Stress Physiology and Molecular Biology, Inner Mongolia Agricultural University, Hohhot, China.,Key Laboratory of Forage Cultivation, Processing and High Efficient Utilization, Ministry of Agriculture, Inner Mongolia Agricultural University, Hohhot, China.,Key Laboratory of Grassland Resources, Ministry of Education, Inner Mongolia Agricultural University, Hohhot, China
| |
Collapse
|
112
|
Somyong S, Phetchawang P, Bihi AK, Sonthirod C, Kongkachana W, Sangsrakru D, Jomchai N, Pootakham W, Tangphatsornruang S. A SNP variation in an expansin ( EgExp4) gene affects height in oil palm. PeerJ 2022; 10:e13046. [PMID: 35313525 PMCID: PMC8934041 DOI: 10.7717/peerj.13046] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 02/10/2022] [Indexed: 01/11/2023] Open
Abstract
Oil palm (Elaeis guineensis Jacq.), an Aracaceae family plant, is utilized for both consumable and non-consumable products, including cooking oil, cosmetics and biodiesel production. Oil palm is a perennial tree with 25 years of optimal harvesting time and a height of up to 18 m. However, harvesting of oil palm fruit bunches with heights of more than 2-3 meters is challenging for oil palm farmers. Thus, understanding the genetic control of height would be beneficial for using gene-based markers to speed up oil palm breeding programs to select semi-dwarf oil palm varieties. This study aims to identify Insertion/Deletions (InDels) and single nucleotide polymorphisms (SNPs) of five height-related genes, including EgDELLA1, EgGRF1, EgGA20ox1, EgAPG1 and EgExp4, in short and tall oil palm groups by PacBio SMRT sequencing technology. Then, the SNP variation's association with height was validated in the Golden Tenera (GT) population. All targeted genes were successfully amplified by two rounds of PCR amplification with expected sizes that ranged from 2,516 to 3,015 base pair (bp), covering 5' UTR, gene sequences and 3' UTR from 20 short and 20 tall oil palm trees. As a result, 1,166, 909, 1,494, 387 and 5,384 full-length genomic DNA sequences were revealed by PacBio SMRT sequencing technology, from EgDELLA1, EgGRF1, EgGA20ox1, EgAPG1 and EgExp4 genes, respectively. Twelve variations, including eight InDels and four SNPs, were identified from EgDELLA1, EgGRF1, EgGA20ox1 and EgExp4. No variation was found for EgAPG1. After SNP through-put genotyping of 4 targeted SNP markers was done by PACE™ SNP genotyping, the association with height was determined in the GT population. Only the mEgExp4_SNP118 marker, designed from EgExp4 gene, was found to associate with height in 2 of 4 height-recordings, with p values of 0.0383 for height (HT)-1 and 0.0263 for HT-4. In conclusion, this marker is a potential gene-based marker that may be used in oil palm breeding programs for selecting semi-dwarf oil palm varieties in the near future.
Collapse
Affiliation(s)
- Suthasinee Somyong
- National Omics Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Pathum Thani, Thailand
| | - Phakamas Phetchawang
- National Omics Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Pathum Thani, Thailand
| | - Abdulloh Kafa Bihi
- National Omics Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Pathum Thani, Thailand,School of Life Sciences and Technology, Institut Teknologi Bandung, Bandung, Indonesia
| | - Chutima Sonthirod
- National Omics Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Pathum Thani, Thailand
| | - Wasitthee Kongkachana
- National Omics Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Pathum Thani, Thailand
| | - Duangjai Sangsrakru
- National Omics Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Pathum Thani, Thailand
| | - Nukoon Jomchai
- National Omics Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Pathum Thani, Thailand
| | - Wirulda Pootakham
- National Omics Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Pathum Thani, Thailand
| | - Sithichoke Tangphatsornruang
- National Omics Center, National Science and Technology Development Agency (NSTDA), Klong Luang, Pathum Thani, Thailand
| |
Collapse
|
113
|
Genome-wide identification of expansin in Fragaria vesca and expression profiling analysis of the FvEXPs in different fruit development. Gene 2022; 814:146162. [PMID: 34995732 DOI: 10.1016/j.gene.2021.146162] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/28/2021] [Accepted: 12/06/2021] [Indexed: 12/21/2022]
Abstract
Strawberry is a highly efficient and economical horticultural crop plant, and strawberry fruits are easy to soften after ripening and decay after harvest, which severely impacts the economic benefits. Expansins are plant cell-wall loosening proteins involved in the process of fruit softening, loosening cell walls and reducing fruit firmness. In this study, 35 FvEXPs genes were identified in the F. vesaca genome. These genes were divided into four subfamilies (27 FvEXPAs, 5 FvEXPBs, 1 FvEXLAs, and 2 FvEXLBs) and were unevenly distributed on 7 chromosomes. Gene structure and motif analysis showed the conserved structure and motif in same subgroup, however, the different motifs and structures may reveal functional divergence of multigene family members of FvEXPs in different developmental stages of fruits. The expression profiling by RNA-seq and qRT-PCR analysis revealed that the FvEXP genes have distinct expression patterns among different stages of strawberry development and ripening. Among them, 3 genes (FvEXPA9, FvEXPA12, and FvEXPA27) were highly expressed in the ripening stage, FvEXPA9 and FvEXPA12 were especially highly expressed in turning stage, whereas FvEXPA27 was especially highly expressed in red stage. Our study provides a better understanding of the FvEXP genes, which may benefit strawberry biotechnological breeding and genetic modification for improving fruit quality and delaying fruit softening.
Collapse
|
114
|
Malau-Aduli AEO, Curran J, Gall H, Henriksen E, O'Connor A, Paine L, Richardson B, van Sliedregt H, Smith L. Genetics and nutrition impacts on herd productivity in the Northern Australian beef cattle production cycle. Vet Anim Sci 2022; 15:100228. [PMID: 35024494 PMCID: PMC8724957 DOI: 10.1016/j.vas.2021.100228] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Genetics and nutrition drive herd productivity due to significant impacts on all components of the beef cattle production cycle. In northern Australia, the beef production system is largely extensive and relies heavily on tropical cattle grazing low quality, phosphorus-deficient pastures with seasonal variations in nutritive value. The existing feedlots are predominantly grain-based; providing high-energy rations, faster turn-off and finishing of backgrounded cattle to meet market specifications. This review focusses on the beef cattle production cycle components of maternal nutrition, foetal development, bull fertility, post-natal to weaning, backgrounding, feedlotting, rumen microbes and carcass quality as influenced by genetics and nutrition. This student-driven review identified the following knowledge gaps in the published literature on northern Australian beef cattle production cycle: 1. Long-term benefits and effects of maternal supplementation to alter foetal enzymes on the performance and productivity of beef cattle; 2. Exogenous fibrolytic enzymes to increase nutrient availability from the cell wall and better utilisation of fibrous and phosphorus deficient pasture feedbase during backgrounding; 3. Supplementation with novel encapsulated calcium butyrate and probiotics to stimulate the early development of rumen papillae and enhance early weaning of calves; 4. The use of single nucleotide polymorphisms as genetic markers for the early selection of tropical beef cattle for carcass and meat eating quality traits prior to feedlotting; The review concludes by recommending future research in whole genome sequencing to target specific genes associated with meat quality characteristics in order to explore the development of breeds with superior genes more suited to the North Australian beef industry. Further research into diverse nutritional strategies of phosphorus supplementation and fortifying tropically adapted grasses with protein-rich legumes and forages for backgrounding and supplementing lot-fed beef cattle with omega-3 oil of plant origin will ensure sustainable production of beef with a healthy composition, tenderness, taste and eating quality.
Collapse
Affiliation(s)
- Aduli E O Malau-Aduli
- Animal Genetics and Nutrition, Veterinary Science Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811, Australia
| | - Jessica Curran
- Animal Genetics and Nutrition, Veterinary Science Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811, Australia
| | - Holly Gall
- Animal Genetics and Nutrition, Veterinary Science Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811, Australia
| | - Erica Henriksen
- Animal Genetics and Nutrition, Veterinary Science Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811, Australia
| | - Alina O'Connor
- Animal Genetics and Nutrition, Veterinary Science Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811, Australia
| | - Lydia Paine
- Animal Genetics and Nutrition, Veterinary Science Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811, Australia
| | - Bailey Richardson
- Animal Genetics and Nutrition, Veterinary Science Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811, Australia
| | - Hannake van Sliedregt
- Animal Genetics and Nutrition, Veterinary Science Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811, Australia
| | - Lucy Smith
- Animal Genetics and Nutrition, Veterinary Science Discipline, College of Public Health, Medical and Veterinary Sciences, Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland 4811, Australia
| |
Collapse
|
115
|
Advances in the Characterization of the Mechanism Underlying Bacterial Canker Development and Tomato Plant Resistance. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8030209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Bacterial canker caused by the Gram-positive actinobacterium Clavibacter michiganensis is one of the most serious bacterial diseases of tomatoes, responsible for 10–100% yield losses worldwide. The pathogen can systemically colonize tomato vascular bundles, leading to wilting, cankers, bird’s eye lesions, and plant death. Bactericidal agents are insufficient for managing this disease, because the pathogen can rapidly migrate through the vascular system of plants and induce systemic symptoms. Therefore, the use of resistant cultivars is necessary for controlling this disease. We herein summarize the pathogenicity of C. michiganensis in tomato plants and the molecular basis of bacterial canker pathogenesis. Moreover, advances in the characterization of resistance to this pathogen in tomatoes are introduced, and the status of genetics-based research is described. Finally, we propose potential future research on tomato canker resistance. More specifically, there is a need for a thorough analysis of the host–pathogen interaction, the accelerated identification and annotation of resistance genes and molecular mechanisms, the diversification of resistance resources or exhibiting broad-spectrum disease resistance, and the production of novel and effective agents for control or prevention. This review provides researchers with the relevant information for breeding tomato cultivars resistant to bacterial cankers.
Collapse
|
116
|
Cabon A, Anderegg WRL. Turgor-driven tree growth: scaling-up sink limitations from the cell to the forest. TREE PHYSIOLOGY 2022; 42:225-228. [PMID: 34788863 DOI: 10.1093/treephys/tpab146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Antoine Cabon
- School of Biological Sciences, University of Utah, Salt Lake City, UT84113, USA
| | | |
Collapse
|
117
|
Guo X, Huang JG, Buttò V, Luo D, Shen C, Li J, Liang H, Zhang S, Hou X, Zhao P, Rossi S. Auxin concentration and xylem production of Pinus massoniana in a subtropical forest in south China. TREE PHYSIOLOGY 2022; 42:317-324. [PMID: 34505152 DOI: 10.1093/treephys/tpab110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
Auxin is involved in various developmental processes of plants, including cell division in cambium and xylem differentiation. However, most studies linking auxin and xylem cell production are performed in environments with a strong seasonality (i.e., temperate and boreal climates). The temporal dynamics of auxin and cambial activity of subtropical trees remain basically unknown. In this study, we sampled four microcores weekly in three individuals of Chinese red pine (Pinus massoniana Lamb.) from February to December 2015-16 to compare xylem formation with auxin concentration in subtropical China. During the entire period of sampling, the number of cambial cells varied from 2 to 7, while the number of cells in the enlarging zone ranged from 1 to 4 and from 1 to 5 in the wall-thickening zone. In 2015, the average auxin concentration was 3.46 ng g-1, with 33 xylem cells being produced at the end of the year. In 2016, a lower auxin concentration (2.59 ng g-1) corresponded to a reduced annual xylem production (13.7 cells). No significant relationship between auxin concentration and number of xylem cells in differentiation was found at the weekly scale. Unlike in boreal and temperate forests, the lack of wood formation seasonality in subtropical forests makes it more difficult to reveal the relationship between auxin concentration and number of xylem cells in differentiation at the intra-annual scale. The frequent and repeated samplings might have reduced auxin concentration in the developing cambium and xylem, resulting in a lower xylem cell production.
Collapse
Affiliation(s)
- Xiali Guo
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
- Center for Plant Ecology, Core Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
- University of Chinese Academy of Sciences, 19(A) Yuquan Road, Shijingshan, Beijing 100049, China
| | - Jian-Guo Huang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
- Center for Plant Ecology, Core Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
| | - Valentina Buttò
- Département des Sciences Fondamentales, Université du Québec à Chicoutimi, 555 boulevard de l'Université Chicoutimi, QC G7H 2B1, Canada
| | - Dawei Luo
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
| | - Chunyu Shen
- Key Laboratory of Geospatial Technology for Middle and Lower Yellow River Regions, Henan University, 1 Jinming Road, Kaifeng Henan 475004, China
| | - Jingye Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
| | - Hanxue Liang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
| | - Shaokang Zhang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
- Center for Plant Ecology, Core Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
| | - Xingliang Hou
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
| | - Ping Zhao
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
- Center for Plant Ecology, Core Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
| | - Sergio Rossi
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe, Guangzhou 510650, China
- Département des Sciences Fondamentales, Université du Québec à Chicoutimi, 555 boulevard de l'Université Chicoutimi, QC G7H 2B1, Canada
| |
Collapse
|
118
|
Luo J, Huang S, Wang M, Zhang R, Zhao D, Yang Y, Wang F, Wang Z, Tang R, Wang L, Xiao H, Yang B, Li C. Characterization of the Transcriptome and Proteome of Brassica napus Reveals the Close Relation between DW871 Dwarfing Phenotype and Stalk Tissue. PLANTS (BASEL, SWITZERLAND) 2022; 11:413. [PMID: 35161394 PMCID: PMC8838640 DOI: 10.3390/plants11030413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 01/29/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
Rapeseed is a significant oil-bearing cash crop. As a hybrid crop, Brassica napus L. produces a high yield, but it also has drawbacks such as a tall stalk, easy lodging, and is not suitable for mechanized production. To address these concerns, we created the DW871 rapeseed dwarf variety, which has a high yield, high oil content, and is suitable for mechanized production. To fully comprehend the dwarfing mechanism of DW871 and provide a theoretical foundation for future applications of the variety, we used transcriptome and proteome sequencing to identify genes and proteins associated with the dwarfing phenotype, using homologous high-stalk material HW871 as a control. By RNA-seq and iTRAQ, we discovered 8665 DEGs and 50 DAPs. Comprehensive transcription and translation level analysis revealed 25 correlations, 23 of which have the same expression trend, involving monolignin synthesis, pectin-lignin assembly, lignification, glucose modification, cell wall composition and architecture, cell morphology, vascular bundle development, and stalk tissue composition and architecture. As a result of these results, we can formulate a hypothesis about the DW871 dwarfing phenotype: plant hormone signal transduction, such as IAA and BRs, is linked to the formation of dwarf phenotypes, and metabolic pathways related to lignin synthesis, such as phenylpropane biosynthesis, also play a role. Our works will contribute to a better understanding of the genes and proteins involved in the rapeseed dwarf phenotype, and we will propose new insights into the dwarfing mechanism of Brassica napus L.
Collapse
Affiliation(s)
- Jing Luo
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- School of Life Sciences, Guizhou Normal University, Huaxi University City, Gui'an New District, Guiyang 550025, China
- Guizhou Plant Conservation Technology Center, Guizhou Academy of Agricultural Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
| | - Sha Huang
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- Guizhou Plant Conservation Technology Center, Guizhou Academy of Agricultural Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
| | - Min Wang
- School of Life Sciences, Guizhou Normal University, Huaxi University City, Gui'an New District, Guiyang 550025, China
| | - Ruimao Zhang
- Guizhou Rapeseed Institute, Guizhou Academy of Agriculture Sciences, No. 111 Duyun Road, Guanshanhu District, Guiyang 520115, China
| | - Degang Zhao
- Guizhou Plant Conservation Technology Center, Guizhou Academy of Agricultural Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation Center for Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, 2708 Huaxi Avenue South Section, Huaxi District, Guiyang 550025, China
- Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering, Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, 2708 Huaxi Avenue South Section, Huaxi District, Guiyang 550025, China
| | - Yuanyu Yang
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- Guizhou Plant Conservation Technology Center, Guizhou Academy of Agricultural Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation Center for Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, 2708 Huaxi Avenue South Section, Huaxi District, Guiyang 550025, China
- Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering, Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, 2708 Huaxi Avenue South Section, Huaxi District, Guiyang 550025, China
| | - Fang Wang
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- Guizhou Plant Conservation Technology Center, Guizhou Academy of Agricultural Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation Center for Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, 2708 Huaxi Avenue South Section, Huaxi District, Guiyang 550025, China
- Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering, Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, 2708 Huaxi Avenue South Section, Huaxi District, Guiyang 550025, China
| | - Zhuanzhuan Wang
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- Guizhou Plant Conservation Technology Center, Guizhou Academy of Agricultural Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- Key Laboratory of Plant Resources Conservation and Germplasm Innovation Center for Mountainous Region (Ministry of Education), Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, 2708 Huaxi Avenue South Section, Huaxi District, Guiyang 550025, China
- Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering, Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, 2708 Huaxi Avenue South Section, Huaxi District, Guiyang 550025, China
| | - Rong Tang
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
| | - Lulu Wang
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
| | - Huagui Xiao
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
| | - Bin Yang
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
| | - Chao Li
- Guizhou Oil Crops Institute, Guizhou Academy of Agriculture Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
- Guizhou Plant Conservation Technology Center, Guizhou Academy of Agricultural Sciences, No. 502 Xinzhong Road, Jinxin Community, Huaxi District, Guiyang 550006, China
| |
Collapse
|
119
|
Hrmova M, Stratilová B, Stratilová E. Broad Specific Xyloglucan:Xyloglucosyl Transferases Are Formidable Players in the Re-Modelling of Plant Cell Wall Structures. Int J Mol Sci 2022; 23:ijms23031656. [PMID: 35163576 PMCID: PMC8836008 DOI: 10.3390/ijms23031656] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 01/27/2023] Open
Abstract
Plant xyloglucan:xyloglucosyl transferases, known as xyloglucan endo-transglycosylases (XETs) are the key players that underlie plant cell wall dynamics and mechanics. These fundamental roles are central for the assembly and modifications of cell walls during embryogenesis, vegetative and reproductive growth, and adaptations to living environments under biotic and abiotic (environmental) stresses. XET enzymes (EC 2.4.1.207) have the β-sandwich architecture and the β-jelly-roll topology, and are classified in the glycoside hydrolase family 16 based on their evolutionary history. XET enzymes catalyse transglycosylation reactions with xyloglucan (XG)-derived and other than XG-derived donors and acceptors, and this poly-specificity originates from the structural plasticity and evolutionary diversification that has evolved through expansion and duplication. In phyletic groups, XETs form the gene families that are differentially expressed in organs and tissues in time- and space-dependent manners, and in response to environmental conditions. Here, we examine higher plant XET enzymes and dissect how their exclusively carbohydrate-linked transglycosylation catalytic function inter-connects complex plant cell wall components. Further, we discuss progress in technologies that advance the knowledge of plant cell walls and how this knowledge defines the roles of XETs. We construe that the broad specificity of the plant XETs underscores their roles in continuous cell wall restructuring and re-modelling.
Collapse
Affiliation(s)
- Maria Hrmova
- Jiangsu Collaborative Innovation Centre for Regional Modern Agriculture and Environmental Protection, School of Life Science, Huaiyin Normal University, Huai’an 223300, China
- School of Agriculture, Food and Wine & Waite Research Institute, University of Adelaide, Glen Osmond, SA 5064, Australia
- Correspondence: ; Tel.: +61-8-8313-0775
| | - Barbora Stratilová
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, SK-84538 Bratislava, Slovakia; (B.S.); (E.S.)
- Faculty of Natural Sciences, Department of Physical and Theoretical Chemistry, Comenius University, SK-84215 Bratislava, Slovakia
| | - Eva Stratilová
- Institute of Chemistry, Centre for Glycomics, Slovak Academy of Sciences, SK-84538 Bratislava, Slovakia; (B.S.); (E.S.)
| |
Collapse
|
120
|
Biophysical Equations and Pressure Probe Experiments to Determine Altered Growth Processes after Changes in Environment, Development, and Mutations. PLANTS 2022; 11:plants11030302. [PMID: 35161283 PMCID: PMC8838987 DOI: 10.3390/plants11030302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 11/17/2022]
Abstract
Expansive growth is a culmination of many biological processes. It is fundamental to volume growth, development, morphogenesis, sensory responses, and environmental responses of plants, fungi, and algae. Expansive growth of walled cells and plant tissue can be accurately described by a set of three global biophysical equations that model the biophysical processes of water uptake, wall deformation, and turgor pressure. Importantly, these biophysical equations have been validated with the results of pressure probe experiments. Here, a systematic method (scheme) is presented that iterates between analyses with the biophysical equations and experiments conducted with the pressure probe. This iterative scheme is used to determine altered growth processes for four cases; two after changes in the environment, one after a change in development, and another after changes by mutation. It is shown that this iterative scheme can identify which biophysical processes are changed, the magnitude of the changes, and their contribution to the change in expansive growth rate. Dimensionless numbers are employed to determine the magnitude of the changes in the biophysical processes. The biological meaning and implication of the biophysical variables in the biophysical equations are discussed. Further, additional sets of global biophysical equations are presented and discussed.
Collapse
|
121
|
Wang H, Meng JS, Raghavan G, Orsat V, Yu XL, Liu ZL, Zheng ZA, Wang SY, Xiao HW. Vacuum-steam pulsed blanching (VSPB) enhances drying quality, shortens the drying time of gingers by inactivating enzymes, altering texture, microstructure and ultrastructure. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112714] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
122
|
Wang Y, Li Y, Gong SY, Qin LX, Nie XY, Liu D, Zheng Y, Li XB. GhKNL1 controls fiber elongation and secondary cell wall synthesis by repressing its downstream genes in cotton (Gossypium hirsutum). JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:39-55. [PMID: 34796654 DOI: 10.1111/jipb.13192] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/16/2021] [Indexed: 06/13/2023]
Abstract
Cotton which produces natural fiber materials for the textile industry is one of the most important crops in the world. Class II KNOX proteins are often considered as transcription factors in regulating plant secondary cell wall (SCW) formation. However, the molecular mechanism of the KNOX transcription factor-regulated SCW synthesis in plants (especially in cotton) remains unclear in details so far. In this study, we show a cotton class II KNOX protein (GhKNL1) as a transcription repressor functioning in fiber development. The GhKNL1-silenced transgenic cotton produced longer fibers with thicker SCWs, whereas GhKNL1 dominant repression transgenic lines displayed the opposite fiber phenotype, compared with controls. Further experiments revealed that GhKNL1 could directly bind to promoters of GhCesA4-2/4-4/8-2 and GhMYB46 for modulating cellulose synthesis during fiber SCW development in cotton. On the other hand, GhKNL1 could also suppress expressions of GhEXPA2D/4A-1/4D-1/13A through binding to their promoters for regulating fiber elongation of cotton. Taken together, these data revealed GhKNL1 functions in fiber elongation and SCW formation by directly repressing expressions of its target genes related to cell elongation and cellulose synthesis. Thus, our data provide an effective clue for potentially improving fiber quality by genetic manipulation of GhKNL1 in cotton breeding.
Collapse
Affiliation(s)
- Yao Wang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Yang Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Si-Ying Gong
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Li-Xia Qin
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Xiao-Ying Nie
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Dong Liu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Yong Zheng
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Xue-Bao Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| |
Collapse
|
123
|
Li J, Feng X, Xie J. A simple method for the application of exogenous phytohormones to the grass leaf base protodermal zone to improve grass leaf epidermis development research. PLANT METHODS 2021; 17:128. [PMID: 34903247 PMCID: PMC8667372 DOI: 10.1186/s13007-021-00828-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 11/30/2021] [Indexed: 05/28/2023]
Abstract
BACKGROUND The leaf epidermis functions to prevent the loss of water and reduce gas exchange. As an interface between the plant and its external environment, it helps prevent damage, making it an attractive system for studying cell fate and development. In monocotyledons, the leaf epidermis grows from the basal meristem that contains protodermal cells. Leaf protoderm zone is covered by the leaf sheath or coleoptile in maize and wheat, preventing traditional exogenous phytohormone application methods, such as directly spraying on the leaf surface or indirectly via culture media, from reaching the protoderm areas directly. The lack of a suitable application method limits research on the effect of phytohormone on the development of grass epidermis. RESULTS Here, we describe a direct and straightforward method to apply exogenous phytohormones to the leaf protoderms of maize and wheat. We used the auxin analogs 2,4-D and cytokinin analogs 6-BA to test the system. After 2,4-D treatment, the asymmetrical division events and initial stomata development were decreased, and the subsidiary cells were induced in maize, the number of GMC (guard mother cell), SMC (subsidiary mother cell) and young stomata were increased in wheat, and the size of the epidermal cells increased after 6-BA treatment in maize. Thus, the method is suitable for the application of phytohormone to the grass leaf protodermal areas. CONCLUSIONS The method to apply hormones to the mesocotyls of maize and wheat seedlings is simple and direct. Only a small amount of externally applied substances are needed to complete the procedure in this method. The entire experimental process lasts for ten days generally, and it is easy to evaluate the phytohormones' effect on the epidermis development.
Collapse
Affiliation(s)
- Jieping Li
- College of Agriculture, School of Life Science, State Key Laboratory of Cotton Biology/State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, 475004, China.
| | - Xinlei Feng
- College of Agriculture, School of Life Science, State Key Laboratory of Cotton Biology/State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, 475004, China
| | - Jinjin Xie
- College of Agriculture, School of Life Science, State Key Laboratory of Cotton Biology/State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, 475004, China
| |
Collapse
|
124
|
Transcriptomic Analysis Reveals Regulatory Networks for Osmotic Water Stress and Rewatering Response in the Leaves of Ginkgo biloba. FORESTS 2021. [DOI: 10.3390/f12121705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
To elucidate the transcriptomic regulation mechanisms that underlie the response of Ginkgo biloba to dehydration and rehydration, we used ginkgo saplings exposed to osmotically driven water stress and subsequent rewatering. When compared with a control group, 137, 1453, 1148, and 679 genes were differentially expressed in ginkgo leaves responding to 2, 6, 12, and 24 h of water deficit, and 796 and 1530 genes were differentially expressed responding to 24 and 48 h of rewatering. Upregulated genes participated in the biosynthesis of abscisic acid, eliminating reactive oxygen species (ROS), and biosynthesis of flavonoids and bilobalide, and downregulated genes were involved in water transport and cell wall enlargement in water stress-treated ginkgo leaves. Under rehydration conditions, the genes associated with water transport and cell wall enlargement were upregulated, and the genes that participated in eliminating ROS and the biosynthesis of flavonoids and bilobalide were downregulated in the leaves of G. biloba. Furthermore, the weighted gene coexpression networks were established and correlated with distinct water stress and rewatering time-point samples. Hub genes that act as key players in the networks were identified. Overall, these results indicate that the gene coexpression networks play essential roles in the transcriptional reconfiguration of ginkgo leaves in response to water stress and rewatering.
Collapse
|
125
|
Chen F, Ji X, Bai M, Zhuang Z, Peng Y. Network Analysis of Different Exogenous Hormones on the Regulation of Deep Sowing Tolerance in Maize Seedlings. FRONTIERS IN PLANT SCIENCE 2021; 12:739101. [PMID: 34925395 PMCID: PMC8674439 DOI: 10.3389/fpls.2021.739101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
The planting method of deep sowing can make the seeds make full use of water in deep soil, which is considered to be an effective way to respond to drought stress. However, deep sowing will affect the growth and development of maize (Zea mays L.) at seedling stage. To better understand the response of maize to deep sowing stress and the mechanism of exogenous hormones [Gibberellin (GA3), Brassinolide (BR), Strigolactone (SL)] alleviates the damaging effects of deep-sowing stress, the physiological and transcriptome expression profiles of seedlings of deep sowing sensitive inbred line Zi330 and the deep-tolerant inbred line Qi319 were compared under deep sowing stress and the conditions of exogenous hormones alleviates stress. The results showed that mesocotyl elongated significantly after both deep sowing stress and application of exogenous hormones, and its elongation was mainly through elongation and expansion of cell volume. Hormone assays revealed no significant changes in zeatin (ZT) content of the mesocotyl after deep sowing and exogenous hormone application. The endogenous GA3 and auxin (IAA) contents in the mesocotyl of the two inbred lines increased significantly after the addition of exogenous GA3, BR, and SL under deep sowing stress compared to deep sowing stress, while BR and SL decreased significantly. Transcriptome analysis showed that the deep seeding stress was alleviated by GA3, BR, and SLs, the differentially expressed genes (DEGs) mainly included cellulose synthase, expansin and glucanase, oxidase, lignin biosynthesis genes and so on. We also found that protein phosphatase 2C and GA receptor GID1 enhanced the ability of resist deep seeding stress in maize by participating in the abscisic acid (ABA) and the GA signaling pathway, respectively. In addition, we identified two gene modules that were significantly related to mesocotyl elongation, and identified some hub genes that were significantly related to mesocotyl elongation by WGCNA analysis. These genes were mainly involved in transcription regulation, hydrolase activity, protein binding and plasma membrane. Our results from this study may provide theoretical basis for determining the maize deep seeding tolerance and the mechanism by which exogenous hormones regulates deep seeding tolerance.
Collapse
|
126
|
Arslan B, İncili ÇY, Ulu F, Horuz E, Bayarslan AU, Öçal M, Kalyoncuoğlu E, Baloglu MC, Altunoglu YC. Comparative genomic analysis of expansin superfamily gene members in zucchini and cucumber and their expression profiles under different abiotic stresses. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:2739-2756. [PMID: 35035133 PMCID: PMC8720134 DOI: 10.1007/s12298-021-01108-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 11/17/2021] [Accepted: 11/25/2021] [Indexed: 05/25/2023]
Abstract
UNLABELLED Zucchini and cucumber belong to the Cucurbitaceae family, a group of economical and nutritious food plants that is consumed worldwide. Expansin superfamily proteins are generally localized in the cell wall of plants and are known to possess an effect on cell wall modification by causing the expansion of this region. Although the whole genome sequences of cucumber and zucchini plants have been resolved, the determination and characterization of expansin superfamily members in these plants using whole genomic data have not been implemented yet. In the current study, a genome-wide analysis of zucchini (Cucurbita pepo) and cucumber (Cucumis sativus) genomes was performed to determine the expansin superfamily genes. In total, 49 and 41 expansin genes were identified in zucchini and cucumber genomes, respectively. All expansin superfamily members were subjected to further bioinformatics analysis including gene and protein structure, ontology of the proteins, phylogenetic relations and conserved motifs, orthologous relations with other plants, targeting miRNAs of those genes and in silico gene expression profiles. In addition, various abiotic stress responses of zucchini and cucumber expansin genes were examined to determine their roles in stress tolerance. CsEXPB-04 and CsEXPA-11 from cucumber and CpEXPA-20 and CpEXPLA-14 from zucchini can be candidate genes for abiotic stress response and tolerance in addition to their roles in the normal developmental processes, which are supported by the gene expression analysis. This work can provide new perspectives for the roles of expansin superfamily genes and offers comprehensive knowledge for future studies investigating the modes of action of expansin proteins. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12298-021-01108-w.
Collapse
Affiliation(s)
- Büşra Arslan
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| | - Çınar Yiğit İncili
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| | - Ferhat Ulu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| | - Erdoğan Horuz
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| | - Aslı Ugurlu Bayarslan
- Department of Biology, Faculty of Science and Arts, Kastamonu University, Kastamonu, Turkey
| | - Mustafa Öçal
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| | - Elif Kalyoncuoğlu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| | - Mehmet Cengiz Baloglu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| | - Yasemin Celik Altunoglu
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Kastamonu University, Kastamonu, Turkey
| |
Collapse
|
127
|
Kurotani KI, Notaguchi M. Cell-to-Cell Connection in Plant Grafting-Molecular Insights into Symplasmic Reconstruction. PLANT & CELL PHYSIOLOGY 2021; 62:1362-1371. [PMID: 34252186 DOI: 10.1093/pcp/pcab109] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/17/2021] [Accepted: 07/12/2021] [Indexed: 05/06/2023]
Abstract
Grafting is a means to connect tissues from two individual plants and grow a single chimeric plant through the establishment of both apoplasmic and symplasmic connections. Recent molecular studies using RNA-sequencing data have provided genetic information on the processes involved in tissue reunion, including wound response, cell division, cell-cell adhesion, cell differentiation and vascular formation. Thus, studies on grafting increase our understanding of various aspects of plant biology. Grafting has also been used to study systemic signaling and transport of micromolecules and macromolecules in the plant body. Given that graft viability and molecular transport across graft junctions largely depend on vascular formation, a major focus in grafting biology has been the mechanism of vascular development. In addition, it has been thought that symplasmic connections via plasmodesmata are fundamentally important to share cellular information among newly proliferated cells at the graft interface and to accomplish tissue differentiation correctly. Therefore, this review focuses on plasmodesmata formation during grafting. We take advantage of interfamily grafts for unambiguous identification of the graft interface and summarize morphological aspects of de novo formation of plasmodesmata. Important molecular events are addressed by re-examining the time-course transcriptome of interfamily grafts, from which we recently identified the cell-cell adhesion mechanism. Plasmodesmata-associated genes upregulated during graft healing that may provide a link to symplasm establishment are described. We also discuss future research directions.
Collapse
Affiliation(s)
- Ken-Ichi Kurotani
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan
| | - Michitaka Notaguchi
- Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan
- Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan
- Institute of Transformative Bio-Molecules (ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8601, Japan
| |
Collapse
|
128
|
Rui C, Zhang Y, Fan Y, Han M, Dai M, Wang Q, Chen X, Lu X, Wang D, Wang S, Gao W, Yu JZ, Ye W. Insight Between the Epigenetics and Transcription Responding of Cotton Hypocotyl Cellular Elongation Under Salt-Alkaline Stress. FRONTIERS IN PLANT SCIENCE 2021; 12:772123. [PMID: 34868171 PMCID: PMC8632653 DOI: 10.3389/fpls.2021.772123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
Gossypium barbadense is a cultivated cotton not only known for producing superior fiber but also for its salt and alkaline resistance. Here, we used Whole Genome Bisulfite Sequencing (WGBS) technology to map the cytosine methylation of the whole genome of the G. barbadense hypocotyl at single base resolution. The methylation sequencing results showed that the mapping rates of the three samples were 75.32, 77.54, and 77.94%, respectively. In addition, the Bisulfite Sequence (BS) conversion rate was 99.78%. Approximately 71.03, 53.87, and 6.26% of the cytosine were methylated at CG, CHG, and CHH sequence contexts, respectively. A comprehensive analysis of DNA methylation and transcriptome data showed that the methylation level of the promoter region was a positive correlation in the CHH context. Saline-alkaline stress was related to the methylation changes of many genes, transcription factors (TFs) and transposable elements (TEs), respectively. We explored the regulatory mechanism of DNA methylation in response to salt and alkaline stress during cotton hypocotyl elongation. Our data shed light into the relationship of methylation regulation at the germination stage of G. barbadense hypocotyl cell elongation and salt-alkali treatment. The results of this research help understand the early growth regulation mechanism of G. barbadense in response to abiotic stress.
Collapse
Affiliation(s)
- Cun Rui
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
- Engineering Research Centre of Cotton, Ministry of Education/College of Agriculture, Xinjiang Agricultural University, Ürümqi, China
| | - Yuexin Zhang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
| | - Yapeng Fan
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
| | - Mingge Han
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
| | - Maohua Dai
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
| | - Qinqin Wang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
| | - Xiugui Chen
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
| | - Xuke Lu
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
| | - Delong Wang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
| | - Shuai Wang
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
| | - Wenwei Gao
- Engineering Research Centre of Cotton, Ministry of Education/College of Agriculture, Xinjiang Agricultural University, Ürümqi, China
| | - John Z. Yu
- Crop Germplasm Research Unit, Southern Plains Agricultural Research Center, United States Department of Agriculture-Agricultural Research Service (USDA-ARS), College Station, TX, United States
| | - Wuwei Ye
- State Key Laboratory of Cotton Biology/Institute of Cotton Research of Chinese Academy of Agricultural Sciences/Zhengzhou Research Base, School of Agricultural Sciences, Zhengzhou University/Key Laboratory for Cotton Genetic Improvement, MOA, Anyang, China
- Engineering Research Centre of Cotton, Ministry of Education/College of Agriculture, Xinjiang Agricultural University, Ürümqi, China
| |
Collapse
|
129
|
Defining the Frontiers of Synergism between Cellulolytic Enzymes for Improved Hydrolysis of Lignocellulosic Feedstocks. Catalysts 2021. [DOI: 10.3390/catal11111343] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Lignocellulose has economic potential as a bio-resource for the production of value-added products (VAPs) and biofuels. The commercialization of biofuels and VAPs requires efficient enzyme cocktail activities that can lower their costs. However, the basis of the synergism between enzymes that compose cellulolytic enzyme cocktails for depolymerizing lignocellulose is not understood. This review aims to address the degree of synergism (DS) thresholds between the cellulolytic enzymes and how this can be used in the formulation of effective cellulolytic enzyme cocktails. DS is a powerful tool that distinguishes between enzymes’ synergism and anti-synergism during the hydrolysis of biomass. It has been established that cellulases, or cellulases and lytic polysaccharide monooxygenases (LPMOs), always synergize during cellulose hydrolysis. However, recent evidence suggests that this is not always the case, as synergism depends on the specific mechanism of action of each enzyme in the combination. Additionally, expansins, nonenzymatic proteins responsible for loosening cell wall fibers, seem to also synergize with cellulases during biomass depolymerization. This review highlighted the following four key factors linked to DS: (1) a DS threshold at which the enzymes synergize and produce a higher product yield than their theoretical sum, (2) a DS threshold at which the enzymes display synergism, but not a higher product yield, (3) a DS threshold at which enzymes do not synergize, and (4) a DS threshold that displays anti-synergy. This review deconvolutes the DS concept for cellulolytic enzymes, to postulate an experimental design approach for achieving higher synergism and cellulose conversion yields.
Collapse
|
130
|
Gupta K, Gupta S, Faigenboim-Doron A, Patil AS, Levy Y, Carrus SC, Hovav R. Deep transcriptomic study reveals the role of cell wall biosynthesis and organization networks in the developing shell of peanut pod. BMC PLANT BIOLOGY 2021; 21:509. [PMID: 34732143 PMCID: PMC8565004 DOI: 10.1186/s12870-021-03290-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Peanut (Arachis hypogaea L.) belongs to an exceptional group of legume plants, wherein the flowers are produced aerially, but the pods develop under the ground. In such a unique environment, the pod's outer shell plays a vital role as a barrier against mechanical damage and soilborne pathogens. Recent studies have reported the uniqueness and importance of gene expression patterns that accompany peanut pods' biogenesis. These studies focused on biogenesis and pod development during the early stages, but the late developmental stages and disease resistance aspects still have gaps. To extend this information, we analyzed the transcriptome generated from four pod developmental stages of two genotypes, Hanoch (Virginia-type) and IGC53 (Peruvian-type), which differs significantly in their pod shell characteristics and pathogen resistance. RESULTS The transcriptome study revealed a significant reprogramming of the number and nature of differentially expressed (DE) genes during shell development. Generally, the numbers of DE genes were higher in IGC53 than in Hanoch, and the R5-R6 transition was the most dynamic in terms of transcriptomic changes. Genes related to cell wall biosynthesis, modification and transcription factors (TFs) dominated these changes therefore, we focused on their differential, temporal and spatial expression patterns. Analysis of the cellulose synthase superfamily identified specific Cellulose synthase (CesAs) and Cellulose synthase-like (Csl) genes and their coordinated interplay with other cell wall-related genes during the peanut shell development was demonstrated. TFs were also identified as being involved in the shell development process, and their pattern of expression differed in the two peanut genotypes. The shell component analysis showed that overall crude fiber, cellulose, lignin, hemicelluloses and dry matter increased with shell development, whereas K, N, protein, and ash content decreased. Genotype IGC53 contained a higher level of crude fiber, cellulose, NDF, ADF, K, ash, and dry matter percentage, while Hanoch had higher protein and nitrogen content. CONCLUSIONS The comparative transcriptome analysis identified differentially expressed genes, enriched processes, and molecular processes like cell wall biosynthesis/modifications, carbohydrate metabolic process, signaling, transcription factors, transport, stress, and lignin biosynthesis during the peanut shell development between two contrasting genotypes. TFs and other genes like chitinases were also enriched in peanut shells known for pathogen resistance against soilborne major pathogens causing pod wart disease and pod damages. This study will shed new light on the biological processes involved with underground pod development in an important legume crop.
Collapse
Affiliation(s)
- Kapil Gupta
- Department of Field Crops, Plant Sciences Institute, ARO, Rishon Lezion, Israel.
- Department of Biotechnology, Siddharth University, Kapilvastu, Siddharth Nagar, UP, India.
| | - Shubhra Gupta
- Department of Field Crops, Plant Sciences Institute, ARO, Rishon Lezion, Israel
| | | | | | - Yael Levy
- Department of Field Crops, Plant Sciences Institute, ARO, Rishon Lezion, Israel
| | - Scott Cohen Carrus
- Department of Field Crops, Plant Sciences Institute, ARO, Rishon Lezion, Israel
| | - Ran Hovav
- Department of Field Crops, Plant Sciences Institute, ARO, Rishon Lezion, Israel.
| |
Collapse
|
131
|
Sudharson S, Kalic T, Hafner C, Breiteneder H. Newly defined allergens in the WHO/IUIS Allergen Nomenclature Database during 01/2019-03/2021. Allergy 2021; 76:3359-3373. [PMID: 34310736 PMCID: PMC9290965 DOI: 10.1111/all.15021] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 07/21/2021] [Indexed: 01/03/2023]
Abstract
The WHO/IUIS Allergen Nomenclature Database (http://allergen.org) provides up‐to‐date expert‐reviewed data on newly discovered allergens and their unambiguous nomenclature to allergen researchers worldwide. This review discusses the 106 allergens that were accepted by the Allergen Nomenclature Sub‐Committee between 01/2019 and 03/2021. Information about protein family membership, patient cohorts, and assays used for allergen characterization is summarized. A first allergenic fungal triosephosphate isomerase, Asp t 36, was discovered in Aspergillus terreus. Plant allergens contained 1 contact, 38 respiratory, and 16 food allergens. Can s 4 from Indian hemp was identified as the first allergenic oxygen‐evolving enhancer protein 2 and Cic a 1 from chickpeas as the first allergenic group 4 late embryogenesis abundant protein. Among the animal allergens were 19 respiratory, 28 food, and 3 venom allergens. Important discoveries include Rap v 2, an allergenic paramyosin in molluscs, and Sal s 4 and Pan h 4, allergenic fish tropomyosins. Paramyosins and tropomyosins were previously known mainly as arthropod allergens. Collagens from barramundi, Lat c 6, and salmon, Sal s 6, were the first members from the collagen superfamily added to the database. In summary, the addition of 106 new allergens to the previously listed 930 allergens reflects the continuous linear growth of the allergen database. In addition, 17 newly described allergen sources were included.
Collapse
Affiliation(s)
- Srinidhi Sudharson
- Department of Dermatology University Hospital St. Poelten Karl Landsteiner University of Health Sciences St. Poelten Austria
- Division of Medical Biotechnology Department of Pathophysiology and Allergy Research Center of Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | - Tanja Kalic
- Department of Dermatology University Hospital St. Poelten Karl Landsteiner University of Health Sciences St. Poelten Austria
- Division of Medical Biotechnology Department of Pathophysiology and Allergy Research Center of Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| | - Christine Hafner
- Department of Dermatology University Hospital St. Poelten Karl Landsteiner University of Health Sciences St. Poelten Austria
| | - Heimo Breiteneder
- Division of Medical Biotechnology Department of Pathophysiology and Allergy Research Center of Pathophysiology, Infectiology and Immunology Medical University of Vienna Vienna Austria
| |
Collapse
|
132
|
Marconi M, Gallemi M, Benkova E, Wabnik K. A coupled mechano-biochemical model for cell polarity guided anisotropic root growth. eLife 2021; 10:72132. [PMID: 34723798 PMCID: PMC8716106 DOI: 10.7554/elife.72132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 10/26/2021] [Indexed: 11/21/2022] Open
Abstract
Plants develop new organs to adjust their bodies to dynamic changes in the environment. How independent organs achieve anisotropic shapes and polarities is poorly understood. To address this question, we constructed a mechano-biochemical model for Arabidopsis root meristem growth that integrates biologically plausible principles. Computer model simulations demonstrate how differential growth of neighboring tissues results in the initial symmetry-breaking leading to anisotropic root growth. Furthermore, the root growth feeds back on a polar transport network of the growth regulator auxin. Model, predictions are in close agreement with in vivo patterns of anisotropic growth, auxin distribution, and cell polarity, as well as several root phenotypes caused by chemical, mechanical, or genetic perturbations. Our study demonstrates that the combination of tissue mechanics and polar auxin transport organizes anisotropic root growth and cell polarities during organ outgrowth. Therefore, a mobile auxin signal transported through immobile cells drives polarity and growth mechanics to coordinate complex organ development.
Collapse
Affiliation(s)
- Marco Marconi
- CBGP Centro de Biotecnologia y Genomica de Plantas UPM-INIA, Pozuelo de Alarcón, Spain
| | - Marcal Gallemi
- Institute of Science and Technology (IST), Klosterneuburg, Austria
| | - Eva Benkova
- Institute of Science and Technology (IST), Klosterneuburg, Austria
| | - Krzysztof Wabnik
- CBGP Centro de Biotecnologia y Genomica de Plantas UPM-INIA, Pozuelo de Alarcón, Spain
| |
Collapse
|
133
|
Iwai H. Virtual issue: cell wall functions in plant growth and environmental responses. JOURNAL OF PLANT RESEARCH 2021; 134:1155-1158. [PMID: 34613490 DOI: 10.1007/s10265-021-01351-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Plant cell walls have multiple functions, including determining cell shape and size, cell-cell adhesion, controlling cell differentiation and growth, and promoting abiotic and biotic stress tolerance. This virtual issue introduces the physiological functions of cell walls in growth and environmental responses. The articles detail research on (1) embryogenesis and seed development, (2) vegetative growth, (3) reproductive growth, and (4) environmental responses. These articles, published in the Journal of Plant Research, will provide valuable information for future research on the function and dynamics of cell walls at various growth stages, and in response to environmental factors.
Collapse
Affiliation(s)
- Hiroaki Iwai
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan.
| |
Collapse
|
134
|
Winship LJ, Rosen GA, Hepler PK. Apical pollen tube wall curvature correlates with growth and indicates localized changes in the yielding of the cell wall. PROTOPLASMA 2021; 258:1347-1358. [PMID: 34414478 DOI: 10.1007/s00709-021-01694-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 07/26/2021] [Indexed: 05/16/2023]
Abstract
The shape of the apical region of lily pollen tube changes rhythmically as the growth rate of the tube oscillates becoming alternately more prolate then back to oblate. We quantified shape change by calculating the curvature of the cross-sectional edge of the pollen tube tip and cross-correlating curvature changes with growth rate. The apical region takes the form of a partial elliptical spheroid, with variation in the length and location of the minor axis. During oscillation curvature profiles show a sharp increase in curvature at the "shoulders" of the apex when oblate, 4-7 μm from the flatter central zone. As the tip becomes more prolate, the "shoulders" decrease rapidly in curvature and move towards the growth axis as curvature at the tip increases. We understand curvature changes to represent differential changes in local wall expansion rates, driven by uniform turgor pressure and mediated by changes in wall polysaccharides. To become more oblate, the tip region must become less extensible than the "shoulder" region. And, as the tip becomes more prolate, the increased curvature must be due to increased local expansion. We found that changes in the growth velocity of the "shoulders" of the cell measured as the progress of the cell edge along the growth axis are cyclically out of phase with growth velocity at the tip such that the shoulder regions lag for part of the oscillation cycle, then "catch up" as the growth rate at the tip reaches a maximum and begins to decline. In this way the cell becomes oblate. Cell shape and growth rate oscillate in concert and are functionally related. Spatial change in edge growth rate points to important cellular locations for further investigation of vesicle movement and exocytosis, calcium gradients, and actin dynamics in lily pollen tubes.
Collapse
Affiliation(s)
| | - Grace A Rosen
- Hampshire College, Amherst, MA, 01002, USA
- VA Boston Healthcare System, 150 South Huntington Avenue, Boston, MA, 02130, USA
| | | |
Collapse
|
135
|
Dubas E, Żur I, Moravčiková J, Fodor J, Krzewska M, Surówka E, Nowicka A, Gerši Z. Proteins, Small Peptides and Other Signaling Molecules Identified as Inconspicuous but Possibly Important Players in Microspores Reprogramming Toward Embryogenesis. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2021. [DOI: 10.3389/fsufs.2021.745865] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In this review, we describe and integrate the latest knowledge on the signaling role of proteins and peptides in the stress-induced microspore embryogenesis (ME) in some crop plants with agricultural importance (i.e., oilseed rape, tobacco, barley, wheat, rice, triticale, rye). Based on the results received from the most advanced omix analyses, we have selected some inconspicuous but possibly important players in microspores reprogramming toward embryogenic development. We provide an overview of the roles and downstream effect of stress-related proteins (e.g., β-1,3-glucanases, chitinases) and small signaling peptides, especially cysteine—(e.g., glutathione, γ-thionins, rapid alkalinization factor, lipid transfer, phytosulfokine) and glycine-rich peptides and other proteins (e.g., fasciclin-like arabinogalactan protein) on acclimation ability of microspores and the cell wall reconstruction in a context of ME induction and haploids/doubled haploids (DHs) production. Application of these molecules, stimulating the induction and proper development of embryo-like structures and green plant regeneration, brings significant improvement of the effectiveness of DHs procedures and could result in its wider incorporation on a commercial scale. Recent advances in the design and construction of synthetic peptides–mainly cysteine-rich peptides and their derivatives–have accelerated the development of new DNA-free genome-editing techniques. These new systems are evolving incredibly fast and soon will find application in many areas of plant science and breeding.
Collapse
|
136
|
Genome-wide identification of expansin gene family in barley and drought-related expansins identification based on RNA-seq. Genetica 2021; 149:283-297. [PMID: 34643833 DOI: 10.1007/s10709-021-00136-4] [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: 03/31/2021] [Accepted: 09/23/2021] [Indexed: 10/20/2022]
Abstract
Expansins are cell wall loosening proteins and involved in various developmental processes and abiotic stress. No systematic research, however, has been conducted on expansin genes family in barley. A total of 46 expansins were identified and could be classified into three subfamilies in Hordeum vulgare: HvEXPA, HvEXPB, and HvEXLA. All expansin proteins contained two conserved domains: DPBB_1 and Pollen_allerg_1. Expansins, in the same subfamily, share similar motifs composition and exon-intron organization; but greater differences were found among different subfamilies. Expansins are distributed unevenly on 7 barley chromosomes; tandem duplicates, including the collinear tandem array, contribute to the forming of the expansin genes family in barley with few whole-genome duplication events. Most HvEXPAs mainly expressed in embryonic and root tissues. HvEXPBs and HvEXLAs showed different expression patterns in 16 tissues during different developmental stages. In response to water deficit, expansins in wild barley were more sensitive than that in cultivated barley; the expressions of HvEXPB5 and HvEXPB6 were significantly induced in wild barley under drought stress. Our study provides a comprehensive and systematic analysis of the barley expansin genes in genome-wide level. This information will lay a solid foundation for further functional exploration of expansin genes in plant development and drought stress tolerance.
Collapse
|
137
|
Li K, Ma B, Shen J, Zhao S, Ma X, Wang Z, Fan Y, Tang Q, Wei D. The evolution of the expansin gene family in Brassica species. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 167:630-638. [PMID: 34479031 DOI: 10.1016/j.plaphy.2021.08.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/18/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Expansin gene (EXP) family plays important roles in plant growth and crop improvement. However, it has not been well studied in the Brassica genus that includes several important agricultural and horticultural crops. To get insight to the evolution and expansion of EXP family in Brassica, Brassica EXPs which are homologues of 35 known AtEXPs of Arabidopsis were comprehensively and systematically analyzed in the present study. In total, 340 Brassica EXPs were clustered into four groups that corresponded multiple alignment to four subfamilies of AtEXPs, with divergent conserved motifs and cis-acting elements among groups. To understand the expansion of EXP family, an integrated genomic block system was constructed among Arabidopsis and Brassica species based on 24 known ancestral karyotype blocks. Obvious gene loss, segmental duplication, tandem duplication and DNA sequence repeat events were found during the expansion of Brassica EXPs, of which the segmental duplication was possibly the major driving force. The divergence time was estimated in 1109 orthologs pairs of EXPs, revealing the divergence of Brassica EXPs from AtEXPs during ~30 MYA, and the divergence of EXPs among Brassica species during 13.50-17.94 MYA. Selective mode analysis revealed that the purifying selection was the major contributor to expansion of Brassica EXPs. This study provides new insights into the evolution and expansion of the EXP family in Brassica genus.
Collapse
Affiliation(s)
- Kui Li
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Bi Ma
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400715, China
| | - Jinjuan Shen
- Chongqing Yudongnan Academy of Agricultural Sciences, Fuling, 408000, China
| | - Sa Zhao
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Xiao Ma
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Zhimin Wang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China
| | - Yonghong Fan
- Chongqing Yudongnan Academy of Agricultural Sciences, Fuling, 408000, China
| | - Qinglin Tang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China.
| | - Dayong Wei
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, 400715, China.
| |
Collapse
|
138
|
Li R, Sun Y, Zhou Y, Gai J, You L, Yang F, Tang W, Li X. A novel decrystallizing protein CxEXL22 from Arthrobotrys sp. CX1 capable of synergistically hydrolyzing cellulose with cellulases. BIORESOUR BIOPROCESS 2021; 8:90. [PMID: 38650251 PMCID: PMC10992334 DOI: 10.1186/s40643-021-00446-7] [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: 07/13/2021] [Accepted: 09/16/2021] [Indexed: 11/10/2022] Open
Abstract
A novel expansin-like protein (CxEXL22) has been identified and characterized from newly isolated Arthrobotrys sp. CX1 that can cause cellulose decrystallization. Unlike previously reported expansin-like proteins from microbes, CxEXL22 has a parallel β-sheet domain at the N terminal, containing many hydrophobic residues to form the hydrophobic surface as part of the groove. The direct phylogenetic relationship implied the genetic transfers occurred from nematode to nematicidal fungal Arthrobotrys sp. CX1. CxEXL22 showed strong activity for the hydrolysis of hydrogen bonds between cellulose molecules, especially when highly crystalline cellulose was used as substrate. The hydrolysis efficiency of Avicel was increased 7.9-fold after pretreating with CxEXL22. The rupture characterization of crystalline region indicated that CxEXL22 strongly binds cellulose and breaks up hydrogen bonds in the crystalline regions of cellulose to split cellulose chains, causing significant depolymerization to expose much more microfibrils and enhances cellulose accessibility.
Collapse
Affiliation(s)
- Rong Li
- School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, China
| | - Yunze Sun
- School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, China
| | - Yihao Zhou
- School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, China
| | - Jiawei Gai
- School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, China
| | - Linlu You
- School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, China
| | - Fan Yang
- School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, China
| | - Wenzhu Tang
- School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, China
| | - Xianzhen Li
- School of Biological Engineering, Dalian Polytechnic University, Gangjingqu, Dalian, 116034, China.
| |
Collapse
|
139
|
Understanding a Mechanistic Basis of ABA Involvement in Plant Adaptation to Soil Flooding: The Current Standing. PLANTS 2021; 10:plants10101982. [PMID: 34685790 PMCID: PMC8537370 DOI: 10.3390/plants10101982] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/19/2021] [Accepted: 09/20/2021] [Indexed: 11/16/2022]
Abstract
Soil flooding severely impairs agricultural crop production. Plants can cope with flooding conditions by embracing an orchestrated set of morphological adaptations and physiological adjustments that are regulated by the elaborated hormonal signaling network. The most prominent of these hormones is ethylene, which has been firmly established as a critical signal in flooding tolerance. ABA (abscisic acid) is also known as a “stress hormone” that modulates various responses to abiotic stresses; however, its role in flooding tolerance remains much less established. Here, we discuss the progress made in the elucidation of morphological adaptations regulated by ABA and its crosstalk with other phytohormones under flooding conditions in model plants and agriculturally important crops.
Collapse
|
140
|
Uncovering miRNA-mRNA Regulatory Modules in Developing Xylem of Pinus massoniana via Small RNA and Degradome Sequencing. Int J Mol Sci 2021; 22:ijms221810154. [PMID: 34576316 PMCID: PMC8472836 DOI: 10.3390/ijms221810154] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/12/2021] [Accepted: 09/18/2021] [Indexed: 12/21/2022] Open
Abstract
Xylem is required for the growth and development of higher plants to provide water and mineral elements. The thickening of the xylem secondary cell wall (SCW) not only improves plant survival, but also provides raw materials for industrial production. Numerous studies have found that transcription factors and non-coding RNAs regulate the process of SCW thickening. Pinus massoniana is an important woody tree species in China and is widely used to produce materials for construction, furniture, and packaging. However, the target genes of microRNAs (miRNAs) in the developing xylem of P. massoniana are not known. In this study, a total of 25 conserved miRNAs and 173 novel miRNAs were identified via small RNA sequencing, and 58 differentially expressed miRNAs were identified between the developing xylem (PM_X) and protoplasts isolated from the developing xylem (PM_XP); 26 of these miRNAs were significantly up-regulated in PM_XP compared with PM_X, and 32 were significantly down-regulated. A total of 153 target genes of 20 conserved miRNAs and 712 target genes of 113 novel miRNAs were verified by degradome sequencing. There may be conserved miRNA-mRNA modules (miRNA-MYB, miRNA-ARF, and miRNA-LAC) involved in softwood and hardwood formation. The results of qRT-PCR-based parallel validation were in relatively high agreement. This study explored the potential regulatory network of miRNAs in the developing xylem of P. massoniana and provides new insights into wood formation in coniferous species.
Collapse
|
141
|
Chen F, Wang C, Yue L, Zhu L, Tang J, Yu X, Cao X, Schröder P, Wang Z. Cell Walls Are Remodeled to Alleviate nY 2O 3 Cytotoxicity by Elaborate Regulation of de Novo Synthesis and Vesicular Transport. ACS NANO 2021; 15:13166-13177. [PMID: 34339172 DOI: 10.1021/acsnano.1c02715] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Yttrium oxide nanoparticles (nY2O3), one of the broadly used rare earth nanoparticles, can interact with plants and possibly cause plant health and environmental impacts, but the plant defense response particularly at the nanoparticle-cell interface is largely unknown. To elucidate this, Bright Yellow 2 (BY-2) tobacco (Nicotiana tabacum L.) suspension-cultured cells were exposed to 50 mg L-1 nY2O3 (30 nm) for 12 h. Although 42.2% of the nY2O3 remained outside of protoplasts, nY2O3 could still traverse the cell wall and was partially deposited inside the vacuole. In addition to growth inhibition, morphological and compositional changes in cell walls occurred. Together with a locally thickened (7-13-fold) cell wall, increased content (up to 58%) of pectin and reduction in (up to 29%) hemicellulose were observed. Transcriptome analysis revealed that genes involved in cell wall metabolism and remodeling were highly regulated in response to nY2O3 stress. Expression of genes for pectin synthesis and degradation was up- and down-regulated by 31-78% and 13-42%, respectively, and genes for xyloglucan and pectin modifications were up- and down-regulated by 82% and 81-92%, respectively. Interestingly, vesicle trafficking seemed to be activated, enabling the repair and defense against nY2O3 disturbance. Our findings indicate that, although nY2O3 generated toxicity on BY-2 cells, it is very likely that during the recovery process cell wall remodeling was initiated to gain resistance to nY2O3 stress, demonstrating the plant's cellular regulatory machinery regarding repair and adaptation to nanoparticles like nY2O3.
Collapse
Affiliation(s)
- Feiran Chen
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Chuanxi Wang
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Le Yue
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Liqi Zhu
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Junfeng Tang
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Xiaoyu Yu
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Xuesong Cao
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Peter Schröder
- Research Unit Comparative Microbiome Analysis, Helmholtz Zentrum München, Neuherberg 85764, Germany
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| |
Collapse
|
142
|
Robust surface-to-mass coupling and turgor-dependent cell width determine bacterial dry-mass density. Proc Natl Acad Sci U S A 2021; 118:2021416118. [PMID: 34341116 PMCID: PMC8364103 DOI: 10.1073/pnas.2021416118] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Intracellular biomass density is an important variable for cellular physiology. It defines the crowded state of the cytoplasm and thus influences macromolecular interactions and transport. To control density during growth, bacteria must expand their cell volumes in synchrony with biomass. The regulation of volume growth and biomass density remain fundamentally not understood—in bacteria or any other organism. Using advanced microscopy, we demonstrate that cells control dry-mass density indirectly through two independent processes. First, cells expand surface area, rather than volume, in proportion with biomass growth. Second, cell width is controlled independently, with an important influence of turgor pressure. Our findings overturn a long-standing paradigm of mass-density constancy in bacteria and reveal fundamental determinants of dry-mass density and shape. During growth, cells must expand their cell volumes in coordination with biomass to control the level of cytoplasmic macromolecular crowding. Dry-mass density, the average ratio of dry mass to volume, is roughly constant between different nutrient conditions in bacteria, but it remains unknown whether cells maintain dry-mass density constant at the single-cell level and during nonsteady conditions. Furthermore, the regulation of dry-mass density is fundamentally not understood in any organism. Using quantitative phase microscopy and an advanced image-analysis pipeline, we measured absolute single-cell mass and shape of the model organisms Escherichia coli and Caulobacter crescentus with improved precision and accuracy. We found that cells control dry-mass density indirectly by expanding their surface, rather than volume, in direct proportion to biomass growth—according to an empirical surface growth law. At the same time, cell width is controlled independently. Therefore, cellular dry-mass density varies systematically with cell shape, both during the cell cycle or after nutrient shifts, while the surface-to-mass ratio remains nearly constant on the generation time scale. Transient deviations from constancy during nutrient shifts can be reconciled with turgor-pressure variations and the resulting elastic changes in surface area. Finally, we find that plastic changes of cell width after nutrient shifts are likely driven by turgor variations, demonstrating an important regulatory role of mechanical forces for width regulation. In conclusion, turgor-dependent cell width and a slowly varying surface-to-mass coupling constant are the independent variables that determine dry-mass density.
Collapse
|
143
|
Zhong M, Zeng B, Tang D, Yang J, Qu L, Yan J, Wang X, Li X, Liu X, Zhao X. The blue light receptor CRY1 interacts with GID1 and DELLA proteins to repress GA signaling during photomorphogenesis in Arabidopsis. MOLECULAR PLANT 2021; 14:1328-1342. [PMID: 33971366 DOI: 10.1016/j.molp.2021.05.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/25/2021] [Accepted: 05/06/2021] [Indexed: 05/23/2023]
Abstract
Light is a critical environmental cue that regulates a variety of diverse plant developmental processes. Cryptochrome 1 (CRY1) is the major photoreceptor that mediates blue light-dependent photomorphogenic responses such as the inhibition of hypocotyl elongation. Gibberellin (GA) participates in the repression of photomorphogenesis and promotes hypocotyl elongation. However, the antagonistic interaction between blue light and GA is not well understood. Here, we report that blue light represses GA-induced degradation of the DELLA proteins (DELLAs), which are key negative regulators in the GA signaling pathway, via CRY1, thereby inhibiting the GA response during hypocotyl elongation. Both in vitro and in vivo biochemical analyses demonstrated that CRY1 physically interacts with GA receptors-GA-INSENSITIVE DWARF 1 proteins (GID1s)-and DELLAs in a blue light-dependent manner. Furthermore, we showed that CRY1 inhibits the association between GID1s and DELLAs. Genetically, CRY1 antagonizes the function of GID1s to repress the expression of cell elongation-related genes and thus hypocotyl elongation. Taken together, our findings demonstrate that CRY1 coordinates blue light and GA signaling for plant photomorphogenesis by stabilizing DELLAs through the binding and inactivation of GID1s, providing new insights into the mechanism by which blue light antagonizes the function of GA in photomorphogenesis.
Collapse
Affiliation(s)
- Ming Zhong
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Bingjie Zeng
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Dongying Tang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China
| | - Jiaxin Yang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Lina Qu
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Jindong Yan
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Xiaochuan Wang
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Xin Li
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China
| | - Xuanming Liu
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China.
| | - Xiaoying Zhao
- College of Biology, Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan Hybrid Rape Engineering and Technology Research Center, Hunan University, Changsha 410082, China; Shenzhen Institute, Hunan University, Shenzhen 518057, China.
| |
Collapse
|
144
|
Yang Z, Zheng J, Zhou H, Chen S, Gao Z, Yang Y, Li X, Liao H. The soybean β-expansin gene GmINS1 contributes to nodule development in response to phosphate starvation. PHYSIOLOGIA PLANTARUM 2021; 172:2034-2047. [PMID: 33887063 DOI: 10.1111/ppl.13436] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/14/2021] [Indexed: 06/12/2023]
Abstract
Legume biological nitrogen fixation (BNF) is the most important N source in agricultural ecosystems. Nodule organogenesis from the primordia to the development of mature nodules with the ability to fix N2 largely determines BNF capacity. However, nodule growth is often limited by low phosphorus (P) availability, while the mechanisms underlying nodule development responses to P deficiency remain largely unknown. In this study, we found that nodule enlargement is severely inhibited by P deficiency, as reflected by the smaller individual nodule size from a soybean core collection in the field. Wide-ranging natural diversity in nodule size was further identified in soybeans reared in low P soils, with the FC-1 genotype outperforming FC-2 in assessments of nodulation under low P conditions. Among β-expansin members, GmINS1 expression is most abundantly enhanced by P deficiency in FC-1 nodules, and its transcript level is further displayed to be tightly associated with nodule enlargement. Four single nucleotide polymorphisms discovered in the GmINS1 promoter distinguished the FC-1 and FC-2 genotypes and accounted for the differential expression levels of GmINS1 responses to P deficiency. GmINS1 overexpression led to increases in nodule size, infected cell abundance, and N2 fixation capacity and subsequently promoted increases in N and P content, soybean biomass, and yield. Our findings provide a candidate gene for optimizing BNF capacity responses to low P stress in soybean molecular breeding programs.
Collapse
Affiliation(s)
- Zhaojun Yang
- Root Biology Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Jiakun Zheng
- Root Biology Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Huiwen Zhou
- Root Biology Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Shengnan Chen
- Root Biology Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Zhi Gao
- Root Biology Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yongqing Yang
- Root Biology Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xinxin Li
- Root Biology Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Hong Liao
- Root Biology Center, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou, China
| |
Collapse
|
145
|
Zhang P, Cui M, Huang R, Qi W, Thielemans W, He Z, Su R. Enhanced enzymatic hydrolysis of cellulose by endoglucanase via expansin pretreatment and the addition of zinc ions. BIORESOURCE TECHNOLOGY 2021; 333:125139. [PMID: 33882384 DOI: 10.1016/j.biortech.2021.125139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
One of the major limitations of lignocellulose conversion is the relatively low efficiency of cellulases. Expansins can act as an accessory protein to loosen the rigid cellulose structure and promote cellulose hydrolysis. However, the synergistic action of expansin is not well understood. In this study, we employed quartz crystal microbalance with dissipation to real-time monitor the adsorption of Bacillus subtilis expansin (BsEXLX1) and endoglucanase I (Cel7B) and the hydrolysis of cellulose. The effects of pH, temperature, and zinc ions on the initial adsorption rate and adsorption capacity of BsEXLX1 were examined. When 36.5 mM of zinc ions was added, the irreversible adsorption ratio of BsEXLX1 further increased to 4.63 times the value in the absence of zinc ions, whereas the initial adsorption rate and the hydrolysis rate constants of Cel7B could reach 2.16 times and 2.05 times the values in the absence of zinc ions, respectively.
Collapse
Affiliation(s)
- Peiqian Zhang
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Sustainable Materials Lab, Department of Chemical Engineering, KU Leuven, campus Kulak Kortrijk, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium
| | - Mei Cui
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Renliang Huang
- School of Marine Science and Technology, Tianjin University, Tianjin 300072, PR China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, PR China
| | - Wim Thielemans
- Sustainable Materials Lab, Department of Chemical Engineering, KU Leuven, campus Kulak Kortrijk, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium
| | - Zhimin He
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; School of Marine Science and Technology, Tianjin University, Tianjin 300072, PR China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, PR China.
| |
Collapse
|
146
|
Abbasi A, Malekpour M, Sobhanverdi S. The Arabidopsis expansin gene (AtEXPA18) is capable to ameliorate drought stress tolerance in transgenic tobacco plants. Mol Biol Rep 2021; 48:5913-5922. [PMID: 34324115 DOI: 10.1007/s11033-021-06589-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 07/21/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Expansins are cell wall proteins loosening plant cell in pH-dependent manner. This study aimed to investigate the role of AtEXPA18 in different morphological, physiological, and cellular responses of transgenic tobacco plants to moderate and severe drought stress. METHODS AND RESULTS Previously synthesized AtEXPA18 gene construct was successfully transferred to the tobacco plants through an agrobacterium-mediate transformation system. Upon obtaining the second generation, tobacco transgenic plants were confirmed by conventional polymerase chain reaction (PCR) technique alongside reverse transcription PCR (RT-PCR) using specific primers. Under drought stress, the transgenic lines showed remarkable growth and significantly improved based on morphological traits such as height and stem diameter, leaf area, leaf number, root dry weight, and Abscisic acid levels of leaves compared control plants. As a result, the Cytokinin content of transgenic plants has increased under severe stress levels. Notably, the area's expansion for abaxial epidermal cells under the microscope confirmed in transgene cells compared with the -transgene cells. CONCLUSION These results, altogether, could support the AtEXPA18 gene implication in cell expansion and improving tolerance capacity of transgenic crops under drought stress.
Collapse
Affiliation(s)
- Alireza Abbasi
- Department of Agronomy and Plant Breeding, Faculty of Agricultural Science and Engineering, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Islamic Republic of Iran.
| | - Meysam Malekpour
- Department of Agronomy and Plant Breeding, Faculty of Agricultural Science and Engineering, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Islamic Republic of Iran
| | - Sajjad Sobhanverdi
- Department of Agronomy and Plant Breeding, Faculty of Agricultural Science and Engineering, University College of Agriculture and Natural Resources, University of Tehran, Karaj, Islamic Republic of Iran
| |
Collapse
|
147
|
Cui G, Zhao M, Tan H, Wang Z, Meng M, Sun F, Zhang C, Xi Y. RNA Sequencing Reveals Dynamic Carbohydrate Metabolism and Phytohormone Signaling Accompanying Post-mowing Regeneration of Forage Winter Wheat ( Triticum aestivum L.). FRONTIERS IN PLANT SCIENCE 2021; 12:664933. [PMID: 34394136 PMCID: PMC8358837 DOI: 10.3389/fpls.2021.664933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
Winter wheat (Triticum aestivum L.) is used as fresh green winter forage worldwide, and its ability to regenerate after mowing determines whether it can be used for forage production; however, the molecular mechanism of regeneration is poorly understood. This study identified long-chain coding and non-coding RNAs in the wheat cultivar "XN9106," which is cultivated for forage and grain production separately in winter and summer, and analyzed their function during post-mowing regeneration. The results showed that the degradation of carbohydrate plays an important role in regeneration, as demonstrated by decreased carbohydrate content. The increased gene expression of enzymes including β-amylase, β-fructofuranosidase, sucrose synthase, sucrose-6-phosphate synthase, trehalose-6-phosphate synthase, and trehalose-6-phosphate phosphatase in mowed seedlings suggests regeneration is fueled by degraded carbohydrates that provide energy and carbon skeletons for the Krebs cycle and amino acid synthesis. The decreased auxin content relieved the inhibition of cytokinin synthesis, that controls the transition from cell division to cell expansion and stimulates cell expansion and differentiation during the cell expansion phase, and eventually accelerate post-mowing regeneration of seedlings. Additionally, differentially expressed long-chain non-coding RNAs (lncRNAs) might participate in the regulation of gene expression related to carbohydrate metabolism and hormone signal transduction. This study demonstrated the responses of key mRNAs and lncRNAs during post-mowing regeneration of winter wheat and revealed the importance of carbohydrate and hormone during regeneration, providing valuable information for genetic improvement of forage wheat.
Collapse
Affiliation(s)
- Guibin Cui
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
- Key Laboratory of Wheat Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Yangling, China
| | - Mei Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
- Key Laboratory of Wheat Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Yangling, China
| | - Hongbin Tan
- Shaanxi Province Seed Industry Group Co., Ltd., Xi’an, China
| | - Zhulin Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
- Key Laboratory of Wheat Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Yangling, China
| | - Min Meng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
- Key Laboratory of Wheat Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Yangling, China
| | - Fengli Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
- Key Laboratory of Wheat Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Yangling, China
| | - Chao Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
- Key Laboratory of Wheat Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Yangling, China
| | - Yajun Xi
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, China
- Key Laboratory of Wheat Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, Yangling, China
| |
Collapse
|
148
|
Liu B, Zhang B, Yang Z, Liu Y, Yang S, Shi Y, Jiang C, Qin F. Manipulating ZmEXPA4 expression ameliorates the drought-induced prolonged anthesis and silking interval in maize. THE PLANT CELL 2021; 33:2058-2071. [PMID: 33730156 PMCID: PMC8290287 DOI: 10.1093/plcell/koab083] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 03/10/2021] [Indexed: 05/21/2023]
Abstract
Drought poses a major environmental threat to maize (Zea mays) production worldwide. Since maize is a monoecious plant, maize grain yield is dependent on the synchronous development of male and female inflorescences. When a drought episode occurs during flowering, however, an asynchronism occurs in the anthesis and silking interval (ASI) that results in significant yield losses. The underlying mechanism responsible for this asynchronism is still unclear. Here, we obtained a comprehensive development-drought transcriptome atlas of maize ears. Genes that function in cell expansion and growth were highly repressed by drought in 50 mm ears. Notably, an association study using a natural-variation population of maize revealed a significant relationship between the level of α-expansin4 (ZmEXPA4) expression and drought-induced increases in ASI. Furthermore, genetic manipulation of ZmEXPA4 expression using a drought-inducible promoter in developing maize ears reduced the ASI under drought conditions. These findings provide important insights into the molecular mechanism underlying the increase in ASI in maize ears subjected to drought and provide a promising strategy that can be used for trait improvement.
Collapse
Affiliation(s)
- Boxin Liu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Bin Zhang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- Beijing Vegetable Research Center (BVRC), Beijing Academy of Agriculture and Forestry Sciences (BAAFS), Beijing, 100097, China
| | - Zhirui Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yan Liu
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Shiping Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Yunlu Shi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Caifu Jiang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing 100193, China
| | - Feng Qin
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100193, China
- Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing 100193, China
- Author for correspondence:
| |
Collapse
|
149
|
Mu Q, Li X, Luo J, Pan Q, Li Y, Gu T. Characterization of expansin genes and their transcriptional regulation by histone modifications in strawberry. PLANTA 2021; 254:21. [PMID: 34216276 DOI: 10.1007/s00425-021-03665-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/16/2021] [Indexed: 05/22/2023]
Abstract
The possible candidate expansin genes, which may be important for strawberry fruit softening, have been identified in the diploid woodland strawberry Fragaria vesca and the octoploid cultivated strawberry Fragaria × ananassa and their transcriptional regulation by histone modifications has been studied. Softening process greatly affects fruit texture and shelf life. Expansins (EXPs) are a group of structural proteins participating in cell wall loosening, which break the hydrogen bonding between cellulose microfibrils and hemicelluloses. However, our knowledge on how EXP genes are regulated in fruit ripening, especially in non-climacteric fleshy fruits, is limited. Here, we have identified the EXP genes in both the octoploid cultivated strawberry (Fragaria × ananassa) and one of its diploid progenitor species, woodland strawberry (Fragaria vesca). We found that EXP proteins in F. × ananassa were structurally more divergent than the ones in F. vesca. Transcriptome data suggested that FaEXP88, FaEXP114, FveEXP11 and FveEXP33 were the four candidate EXP genes more likely involved in fruit softening, whose transcript levels dramatically increased when firmness decreased during fruit maturation. Phylogenetic analyses showed that those candidate genes were closely clustered, indicating the presence of homoeolog expression dominance in the EXP gene family in strawberry. Moreover, we have performed chromatin immunoprecipitation (ChIP) experiments to investigate the distribution of histone modifications along the promoters and genic regions of the EXP genes in F. vesca. ChIP data revealed that the transcript levels of EXP genes were highly correlated with the enrichment of H3K9/K14 acetylation and H3K27 tri-methylation. Collectively, this study identifies the key EXP genes involved in strawberry fruit softening and reveals a regulatory role of histone modifications in their transcriptional regulation, which would facilitate functional studies of the EXP genes in the ripening of non-climacteric fruits.
Collapse
Affiliation(s)
- Qin Mu
- State Key Laboratory of Plant Genetics and Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Xianyang Li
- State Key Laboratory of Plant Genetics and Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Jianhua Luo
- State Key Laboratory of Plant Genetics and Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Qinwei Pan
- State Key Laboratory of Plant Genetics and Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Yi Li
- Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, CT, 06269, USA.
| | - Tingting Gu
- State Key Laboratory of Plant Genetics and Germplasm Enhancement and College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| |
Collapse
|
150
|
Tuan PA, Nguyen TN, Jordan MC, Ayele BT. A shift in abscisic acid/gibberellin balance underlies retention of dormancy induced by seed development temperature. PLANT, CELL & ENVIRONMENT 2021; 44:2230-2244. [PMID: 33249604 DOI: 10.1111/pce.13963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 05/06/2023]
Abstract
Through a combination of physiological, pharmacological, molecular and targeted metabolomics approaches, we showed that retention of wheat (Triticum aestivum L.) seed dormancy levels induced by low and high seed development temperatures during post-desiccation phases is associated with modulation of gibberellin (GA) level and seed responsiveness to abscisic acid (ABA) and GA via expression of TaABI5 and TaGAMYB, respectively. Dormancy retention during imbibition, however, is associated with modulations of both ABA level and responsiveness via expression of specific ABA metabolism (TaNCED2 and TaCYP707A1) and signalling (TaPYL2, TaSnRK2, TaABI3, TaABI4 and TaABI5) genes, and alterations of GA levels and responsiveness through expression of specific GA biosynthesis (TaGA20ox1, TaGA20ox2 and TaGA3ox2) and signalling (TaGID1 and TaGID2) genes, respectively. Expression patterns of GA signalling genes, TaRHT1 and TaGAMYB, lacked positive correlation with that of GA regulated genes and dormancy level observed in seeds developed at the two temperatures, implying their regulation at post-transcriptional level. Our results overall implicate that a shift in ABA/GA balance underlies retention of dormancy levels induced by seed development temperature during post-desiccation and imbibition phases. Consistently, genes regulated by ABA and GA during imbibition overlapped with those differentially expressed between imbibed seeds developed at the two temperatures and mediate different biological functions.
Collapse
Affiliation(s)
- Pham A Tuan
- Department of Plant Science, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Tran-Nguyen Nguyen
- Department of Plant Science, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Mark C Jordan
- Morden Research and Development Center, Agriculture and Agri-Food Canada, Morden, Manitoba, Canada
| | - Belay T Ayele
- Department of Plant Science, University of Manitoba, Winnipeg, Manitoba, Canada
| |
Collapse
|