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An Y, Jiao X, Yang S, Wang S, Chen N, Huang L, Jiang C, Lu M, Zhang J. Evaluation of novel promoters for vascular tissue-specific gene expression in Populus. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 344:112083. [PMID: 38588982 DOI: 10.1016/j.plantsci.2024.112083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/19/2024] [Accepted: 04/02/2024] [Indexed: 04/10/2024]
Abstract
Due to the extended generation cycle of trees, the breeding process for forest trees tends to be time-consuming. Genetic engineering has emerged as a viable approach to expedite the genetic breeding of forest trees. However, current genetic engineering techniques employed in forest trees often utilize continuous expression promoters such as CaMV 35S, which may result in unintended consequences by introducing genes into non-target tissues. Therefore, it is imperative to develop specific promoters for forest trees to facilitate targeted and precise design and breeding. In this study, we utilized single-cell RNA-Seq data and co-expression network analysis during wood formation to identify three vascular tissue-specific genes in poplar, PP2-A10, PXY, and VNS07, which are expressed in the phloem, cambium/expanding xylem, and mature xylem, respectively. Subsequently, we cloned the promoters of these three genes from '84K' poplar and constructed them into a vector containing the eyGFPuv visual selection marker, along with the 35S mini enhancer to drive GUS gene expression. Transgenic poplars expressing the ProPagPP2-A10::GUS, ProPagPXY::GUS, and ProPagVNS07::GUS constructs were obtained. To further elucidate the tissue specificity of these promoters, we employed qPCR, histochemical staining, and GUS enzyme activity. Our findings not only establish a solid foundation for the future utilization of these promoters to precisely express of specific functional genes in stems but also provide a novel perspective for the modular breeding of forest trees.
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Affiliation(s)
- Yi An
- State Key Laboratory of Subtropical Silviculture, Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Xue Jiao
- State Key Laboratory of Subtropical Silviculture, Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Song Yang
- State Key Laboratory of Subtropical Silviculture, Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Shiqi Wang
- State Key Laboratory of Subtropical Silviculture, Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Ningning Chen
- State Key Laboratory of Subtropical Silviculture, Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Lichao Huang
- State Key Laboratory of Subtropical Silviculture, Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Cheng Jiang
- State Key Laboratory of Subtropical Silviculture, Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Mengzhu Lu
- State Key Laboratory of Subtropical Silviculture, Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Jin Zhang
- State Key Laboratory of Subtropical Silviculture, Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China.
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2
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Wang H. Endogenous and environmental signals in regulating vascular development and secondary growth. FRONTIERS IN PLANT SCIENCE 2024; 15:1369241. [PMID: 38628366 PMCID: PMC11018896 DOI: 10.3389/fpls.2024.1369241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 03/18/2024] [Indexed: 04/19/2024]
Affiliation(s)
- Huanzhong Wang
- Department of Plant Science & Landscape Architecture, University of Connecticut, Storrs, CT, United States
- Institute for System Genomics, University of Connecticut, Storrs, CT, United States
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3
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Ma Y, Wang Z, Humphries J, Ratcliffe J, Bacic A, Johnson KL, Qu G. WALL-ASSOCIATED KINASE Like 14 regulates vascular tissue development in Arabidopsis and tomato. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 341:112013. [PMID: 38309474 DOI: 10.1016/j.plantsci.2024.112013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 01/30/2024] [Accepted: 01/30/2024] [Indexed: 02/05/2024]
Abstract
Initiation of plant vascular tissue is regulated by transcriptional networks during development and in response to environmental stimuli. The WALL-ASSOCIATED KINASES (WAKs) and WAK-likes (WAKLs) are cell surface receptors involved in cell expansion and defence in cells with primary walls, yet their roles in regulation of vascular tissue development that contain secondary walls remains unclear. In this study, we showed tomato (Solanum lycopersicum) SlWAKL2 and the orthologous gene in Arabidopsis thaliana, AtWAKL14, were specifically expressed in vascular tissues. SlWAKL2-RNAi tomato plants displayed smaller fruit size with fewer seeds and vascular bundles compared to wild-type (WT) and over-expression (OE) lines. RNA-seq data showed that SlWAKL2-RNAi fruits down-regulated transcript levels of genes related to vascular tissue development compared to WT. Histological analysis showed T-DNA insertion mutant wakl14-1 had reduced plant stem length with fewer number of xylem vessels and interfascicular fibres compared to WT, with no significant differences in cellulose and lignin content. Mutant wakl14-1 also showed reduced number of vascular bundles in fruit. A proWAKL14::mCherry-WAKL14 fusion protein was able to complement wakl14-1 phenotypes and showed mCherry-WAKL14 associated with the plasma membrane. In vitro binding assays showed both SlWAKL2 and AtWAKL14 can interact with pectin and oligogalacturonides. Our results reveal novel roles of WAKLs in regulating vascular tissue development.
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Affiliation(s)
- Yingxuan Ma
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; State Key Laboratory of Tree Genetics and Breeding, 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; School of BioSciences, University of Melbourne, Parkville, VIC 3052, Australia; La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia
| | - Zhenghang Wang
- State Key Laboratory of Tree Genetics and Breeding, 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
| | - John Humphries
- La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia
| | - Julian Ratcliffe
- La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia
| | - Antony Bacic
- La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia; Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang Agriculture and Forestry University, Lin'an, Hangzhou 311300, China
| | - Kim L Johnson
- La Trobe Institute for Sustainable Agriculture & Food, Department of Animal, Plant and Soil Science, AgriBio Building, La Trobe University, Bundoora, VIC 3086, Australia; Sino-Australia Plant Cell Wall Research Centre, College of Forestry and Biotechnology, Zhejiang Agriculture and Forestry University, Lin'an, Hangzhou 311300, China.
| | - Guiqin Qu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
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Solé-Gil A, López A, Ombrosi D, Urbez C, Brumós J, Agustí J. Identification of MeC3HDZ1/MeCNA as a potential regulator of cassava storage root development. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 339:111938. [PMID: 38072332 DOI: 10.1016/j.plantsci.2023.111938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023]
Abstract
The storage root (SR) of cassava is the main staple food in sub-Saharan Africa, where it feeds over 500 million people. However, little is known about the genetic and molecular regulation underlying its development. Unraveling such regulation would pave the way for biotechnology approaches aimed at enhancing cassava productivity. Anatomical studies indicate that SR development relies on the massive accumulation of xylem parenchyma, a cell-type derived from the vascular cambium. The C3HDZ family of transcription factors regulate cambial cells proliferation and xylem differentiation in Arabidopsis and other species. We thus aimed at identifying C3HDZ proteins in cassava and determining whether any of them shows preferential activity in the SR cambium and/or xylem. Using phylogeny and synteny studies, we identified eight C3HDZ proteins in cassava, namely MeCH3DZ1-8. We observed that MeC3HDZ1 is the MeC3HDZ gene displaying the highest expression in SR and that, within that organ, the gene also shows high expression in cambium and xylem. In-silico analyses revealed the existence of a number of potential C3HDZ targets displaying significant preferential expression in the SR. Subsequent Y1H analyses proved that MeC3HDZ1 can bind canonical C3HDZ binding sites, present in the promoters of these targets. Transactivation assays demonstrated that MeC3HDZ1 can regulate the expression of genes downstream of promoters harboring such binding sites, thereby demonstrating that MeC3HDZ1 has C3HDZ transcription factor activity. We conclude that MeC3HDZ1 may be a key factor for the regulation of storage root development in cassava, holding thus great promise for future biotechnology applications.
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Affiliation(s)
- Anna Solé-Gil
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain
| | - Anselmo López
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain
| | - Damiano Ombrosi
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain
| | - Cristina Urbez
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain
| | - Javier Brumós
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain.
| | - Javier Agustí
- Institute for Plant Molecular and Cell Biology (IBMCP), CSIC-Universitat Politècnica de Valencia, Camino de Vera S/N, 46022 València, Spain.
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5
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Bartusch K, Blanco-Touriñán N, Rodriguez-Villalón A, Truernit E. Monitoring Xylem Transport in Arabidopsis thaliana Seedlings Using Fluorescent Dyes. Methods Mol Biol 2024; 2722:3-15. [PMID: 37897596 DOI: 10.1007/978-1-0716-3477-6_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/30/2023]
Abstract
Fluorescent dyes are often used to observe transport mechanisms in plant vascular tissues. However, it has been technically challenging to apply fluorescent dyes on roots to monitor xylem transport in vivo. Here, we present a fast, noninvasive, and high-throughput protocol to monitor xylem transport in seedlings. Using the fluorescent dyes 5(6)-carboxyfluorescein diacetate (CFDA) and Rhodamine WT, we were able to observe xylem transport on a cellular level in Arabidopsis thaliana roots. We describe how to apply these dyes on primary roots of young seedlings, how to monitor root-to-shoot xylem transport, and how to measure xylem transport velocity in roots. Moreover, we show that our protocol can also be applied to lateral roots and grafted seedlings to assess xylem (re)connection. Altogether, these techniques are useful for investigating xylem functionality in diverse experimental setups.
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Affiliation(s)
- Kai Bartusch
- Group of Phloem Development and Function, Institute of Molecular Plant Biology, Department of Biology, ETH Zürich, Zürich, Switzerland.
| | - Noel Blanco-Touriñán
- Group of Plant Vascular Development, Institute of Molecular Plant Biology, Department of Biology, ETH Zürich, Zürich, Switzerland
| | - Antia Rodriguez-Villalón
- Group of Plant Vascular Development, Institute of Molecular Plant Biology, Department of Biology, ETH Zürich, Zürich, Switzerland
| | - Elisabeth Truernit
- Group of Phloem Development and Function, Institute of Molecular Plant Biology, Department of Biology, ETH Zürich, Zürich, Switzerland.
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6
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Wójcikowska B, Belaidi S, Robert HS. Game of thrones among AUXIN RESPONSE FACTORs-over 30 years of MONOPTEROS research. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:6904-6921. [PMID: 37450945 PMCID: PMC10690734 DOI: 10.1093/jxb/erad272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
For many years, research has been carried out with the aim of understanding the mechanism of auxin action, its biosynthesis, catabolism, perception, and transport. One central interest is the auxin-dependent gene expression regulation mechanism involving AUXIN RESPONSE FACTOR (ARF) transcription factors and their repressors, the AUXIN/INDOLE-3-ACETIC ACID (Aux/IAA) proteins. Numerous studies have been focused on MONOPTEROS (MP)/ARF5, an activator of auxin-dependent gene expression with a crucial impact on plant development. This review summarizes over 30 years of research on MP/ARF5. We indicate the available analytical tools to study MP/ARF5 and point out the known mechanism of MP/ARF5-dependent regulation of gene expression during various developmental processes, namely embryogenesis, leaf formation, vascularization, and shoot and root meristem formation. However, many questions remain about the auxin dose-dependent regulation of gene transcription by MP/ARF5 and its isoforms in plant cells, the composition of the MP/ARF5 protein complex, and, finally, all the genes under its direct control. In addition, information on post-translational modifications of MP/ARF5 protein is marginal, and knowledge about their consequences on MP/ARF5 function is limited. Moreover, the epigenetic factors and other regulators that act upstream of MP/ARF5 are poorly understood. Their identification will be a challenge in the coming years.
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Affiliation(s)
- Barbara Wójcikowska
- Mendel Centre for Genomics and Proteomics of Plants Systems, CEITEC MU - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- Institute of Biology, Biotechnology, and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | - Samia Belaidi
- Mendel Centre for Genomics and Proteomics of Plants Systems, CEITEC MU - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Hélène S Robert
- Mendel Centre for Genomics and Proteomics of Plants Systems, CEITEC MU - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
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7
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Blanco-Touriñán N, Hardtke CS. Connecting emerging with existing vasculature above and below ground. CURRENT OPINION IN PLANT BIOLOGY 2023; 76:102461. [PMID: 37774454 DOI: 10.1016/j.pbi.2023.102461] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/29/2023] [Accepted: 09/03/2023] [Indexed: 10/01/2023]
Abstract
The vascular system was essential for plants to colonize land by facilitating the transport of water, nutrients, and minerals throughout the body. Our current knowledge on the molecular-genetic control of vascular tissue specification and differentiation is mostly based on studies in the Arabidopsis primary root. To what degree these regulatory mechanisms in the root meristem can be extrapolated to vascular tissue development in other organs is a question of great interest. In this review, we discuss the most recent progress on cotyledon vein formation, with a focus on polar auxin transport-dependent and -independent mechanisms. We also provide an overview of vasculature formation in postembryonic organs, namely lateral roots, which is more complex than anticipated as several tissues of the parent root must act in a spatio-temporally coordinated manner.
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Affiliation(s)
- Noel Blanco-Touriñán
- Department of Plant Molecular Biology, University of Lausanne, Biophore Building, 1015 Lausanne, Switzerland.
| | - Christian S Hardtke
- Department of Plant Molecular Biology, University of Lausanne, Biophore Building, 1015 Lausanne, Switzerland.
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8
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Sun Y, Yang B, De Rybel B. Hormonal control of the molecular networks guiding vascular tissue development in the primary root meristem of Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:6964-6974. [PMID: 37343122 PMCID: PMC7615341 DOI: 10.1093/jxb/erad232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 06/16/2023] [Indexed: 06/23/2023]
Abstract
Vascular tissues serve a dual function in plants, both providing physical support and controlling the transport of nutrients, water, hormones, and other small signaling molecules. Xylem tissues transport water from root to shoot; phloem tissues transfer photosynthates from shoot to root; while divisions of the (pro)cambium increase the number of xylem and phloem cells. Although vascular development constitutes a continuous process from primary growth in the early embryo and meristem regions to secondary growth in the mature plant organs, it can be artificially separated into distinct processes including cell type specification, proliferation, patterning, and differentiation. In this review, we focus on how hormonal signals orchestrate the molecular regulation of vascular development in the Arabidopsis primary root meristem. Although auxin and cytokinin have taken center stage in this aspect since their discovery, other hormones including brassinosteroids, abscisic acid, and jasmonic acid also take leading roles during vascular development. All these hormonal cues synergistically or antagonistically participate in the development of vascular tissues, forming a complex hormonal control network.
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Affiliation(s)
- Yanbiao Sun
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, 9052 Ghent, Belgium
- VIB Centre for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | - Baojun Yang
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, 9052 Ghent, Belgium
- VIB Centre for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | - Bert De Rybel
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 71, 9052 Ghent, Belgium
- VIB Centre for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
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Ohba Y, Yoshihara S, Sato R, Matsuoka K, Asahina M, Satoh S, Iwai H. Plasmodesmata callose binding protein 2 contributes to the regulation of cambium/phloem formation and auxin response during the tissue reunion process in incised Arabidopsis stem. JOURNAL OF PLANT RESEARCH 2023; 136:865-877. [PMID: 37707645 DOI: 10.1007/s10265-023-01494-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 08/31/2023] [Indexed: 09/15/2023]
Abstract
Plants are exposed to a variety of biotic and abiotic stresses, including wounding at the stem. The healing process (tissue reunion) begins immediately after stem wounding. The plant hormone auxin plays an important role during tissue reunion. In decapitated stems, auxin transport from the shoot apex is reduced and tissue reunion does not occur but is restored by application of indole-3-acetic acid (IAA). In this study, we found that plasmodesmata callose binding protein 2 (PDCB2) affects the expansion of the cambium/phloem region via changes in auxin response during the process of tissue reunion. PDCB2 was expressed in the cortex and endodermis on the incised side of stems 1-3 days after incision. PDCB2-knockout plants showed reduced callose deposition at plasmodesmata and DR5::GUS activity in the endodermis/cortex in the upper region of the incision accompanied by an increase in size of the cambium/phloem region during tissue reunion. In addition, PIN(PIN-FORMED)3, which is involved in lateral auxin transport, was induced by auxin in the cambium/phloem and endodermis/cortex in the upper part of the incision in wild type, but its expression of PIN3 was decreased in pdcb2 mutant. Our results suggest that PDCB2 contributes to the regulation of cambium/phloem development via auxin response.
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Affiliation(s)
- Yusuke Ohba
- Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Sakura Yoshihara
- Graduate School of Life and Environmental Science, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Ryosuke Sato
- Department of Biosciences, Teikyo University, Utsunomiya, Tochigi, 320-8551, Japan
| | - Keita Matsuoka
- Department of Biosciences, Teikyo University, Utsunomiya, Tochigi, 320-8551, Japan
| | - Masashi Asahina
- Department of Biosciences, Teikyo University, Utsunomiya, Tochigi, 320-8551, Japan
- Advanced Instrumental Analysis Center, Teikyo University, Utsunomiya, Tochigi, 320-8551, Japan
| | - Shinobu Satoh
- Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan
| | - Hiroaki Iwai
- Institute of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan.
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Zhang LY, Yang C, Wu ZC, Zhang XJ, Fan SJ. Comprehensive Time-Course Transcriptome Reveals the Crucial Biological Pathways Involved in the Seasonal Branch Growth in Siberian Elm ( Ulmus pumila). Int J Mol Sci 2023; 24:14976. [PMID: 37834427 PMCID: PMC10573607 DOI: 10.3390/ijms241914976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/22/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023] Open
Abstract
Timber, the most prevalent organic material on this planet, is the result of a secondary xylem emerging from vascular cambium. Yet, the intricate processes governing its seasonal generation are largely a mystery. To better understand the cyclic growth of vascular tissues in elm, we undertook an extensive study examining the anatomy, physiology, and genetic expressions in Ulmus pumila. We chose three robust 15-year-old elm trees for our study. The cultivars used in this study were collected from the Inner Mongolia Autonomous Region in China and nurtured in the tree farm of Shandong Normal University. Monthly samples of 2-year-old elm branches were taken from the tree from February to September. Marked seasonal shifts in elm branch vascular tissues were observed by phenotypic observation: In February, the cambium of the branch emerged from dormancy, spurring growth. By May, elms began generating secondary xylem, or latewood, recognized by its tiny pores and dense cell structure. From June to August, there was a marked increase in the thickness of the secondary xylem. Transcriptome sequencing provides a potential molecular mechanism for the thickening of elm branches and their response to stress. In February, the tree enhanced its genetic responses to cold and drought stress. The amplified expression of CDKB, CYCB, WOX4, and ARF5 in the months of February and March reinforced their essential role in the development of the vascular cambium in elm. Starting in May, the elm deployed carbohydrates as a carbon resource to synthesize the abundant cellulose and lignin necessary for the formation of the secondary wall. Major genes participating in cellulose (SUC and CESA homologs), xylan (UGD, UXS, IRX9, IRX10, and IRX14), and lignin (PAL, C4H, 4CL, HCT, C3H, COMT, and CAD) biosynthetic pathways for secondary wall formation were up-regulated by May or/and June. In conclusion, our findings provided a foundation for an in-depth exploration of the molecular processes dictating the seasonal growth of elm timber.
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Affiliation(s)
| | | | | | - Xue-Jie Zhang
- Key Lab of Plant Stress Research, College of Life Science, Shandong Normal University, No. 88 Wenhuadong Road, Ji’nan 250014, China; (L.-Y.Z.); (C.Y.); (Z.-C.W.)
| | - Shou-Jin Fan
- Key Lab of Plant Stress Research, College of Life Science, Shandong Normal University, No. 88 Wenhuadong Road, Ji’nan 250014, China; (L.-Y.Z.); (C.Y.); (Z.-C.W.)
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Guo X, Wang F, Fang D, Lin Q, Sahu SK, Luo L, Li J, Chen Y, Dong S, Chen S, Liu Y, Luo S, Guo Y, Liu H. The genome of Acorus deciphers insights into early monocot evolution. Nat Commun 2023; 14:3662. [PMID: 37339966 DOI: 10.1038/s41467-023-38836-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 05/17/2023] [Indexed: 06/22/2023] Open
Abstract
Acorales is the sister lineage to all the other extant monocot plants. Genomic resource enhancement of this genus can help to reveal early monocot genomic architecture and evolution. Here, we assemble the genome of Acorus gramineus and reveal that it has ~45% fewer genes than the majority of monocots, although they have similar genome size. Phylogenetic analyses based on both chloroplast and nuclear genes consistently support that A. gramineus is the sister to the remaining monocots. In addition, we assemble a 2.2 Mb mitochondrial genome and observe many genes exhibit higher mutation rates than that of most angiosperms, which could be the reason leading to the controversies of nuclear genes- and mitochondrial genes-based phylogenetic trees existing in the literature. Further, Acorales did not experience tau (τ) whole-genome duplication, unlike majority of monocot clades, and no large-scale gene expansion is observed. Moreover, we identify gene contractions and expansions likely linking to plant architecture, stress resistance, light harvesting, and essential oil metabolism. These findings shed light on the evolution of early monocots and genomic footprints of wetland plant adaptations.
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Affiliation(s)
- Xing Guo
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China
| | - Fang Wang
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Dongming Fang
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China
| | - Qiongqiong Lin
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China
- College of Life Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China
| | - Sunil Kumar Sahu
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China
| | - Liuming Luo
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China
- College of Life Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China
| | - Jiani Li
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China
- College of Life Sciences, Northwest University, Xi'an, Shaanxi, 710069, PR China
| | - Yewen Chen
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Shanshan Dong
- Key Laboratory of Southern Subtropical Plant Diversity, Fairy Lake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen, Guangdong, 518004, PR China
| | - Sisi Chen
- Key Laboratory of Plant Resource Conservation and Sustainable Utilization, The Chinese Academy of Sciences, South China Botanical Garden, Guangzhou, Guangdong, 510650, PR China
| | - Yang Liu
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China
- Key Laboratory of Southern Subtropical Plant Diversity, Fairy Lake Botanical Garden, Shenzhen & Chinese Academy of Sciences, Shenzhen, Guangdong, 518004, PR China
| | - Shixiao Luo
- Key Laboratory of Plant Resource Conservation and Sustainable Utilization, The Chinese Academy of Sciences, South China Botanical Garden, Guangzhou, Guangdong, 510650, PR China
| | - Yalong Guo
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, PR China
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, PR China
| | - Huan Liu
- State Key Laboratory of Agricultural Genomics, BGI-Shenzhen, Shenzhen, Guangdong, 518083, PR China.
- BGI Life Science Joint Research Center, Northeast Forestry University, Harbin, Heilongjiang, 150040, PR China.
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12
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Qin S, Fu S, Yang Y, Sun Q, Wang J, Dong Y, Gu X, Wang T, Xie X, Mo X, Jiang H, Yu Y, Yan J, Chu J, Zheng B, He Y. Comparative Microscopic, Transcriptome and IAA Content Analyses Reveal the Stem Growth Variations in Two Cultivars Ilex verticillata. PLANTS (BASEL, SWITZERLAND) 2023; 12:1941. [PMID: 37653858 PMCID: PMC10220661 DOI: 10.3390/plants12101941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/07/2023] [Accepted: 05/08/2023] [Indexed: 09/02/2023]
Abstract
Ilex verticillata is not only an excellent ornamental tree species for courtyards, but it is also a popular bonsai tree. 'Oosterwijk' and 'Red sprite' are two varieties of Ilex verticillata. The former has a long stem with few branches, while the latter has a short stem. In order to explain the stem growth differences between the two cultivars 'Oosterwijk' and 'Red sprite', determination of the microstructure, transcriptome sequence and IAA content was carried out. The results showed that the xylem thickness, vessel area and vessel number of 'Oosterwijk' were larger than in 'Red sprite'. In addition, our analysis revealed that the differentially expressed genes which were enriched in phenylpropanoid biosynthesis; phenylalanine metabolism and phenylalanine, tyrosine and tryptophan biosynthesis in the black and tan modules of the two varieties. We found that AST, HCT and bHLH 94 may be key genes in the formation of shoot difference. Moreover, we found that the IAA content and auxin-related DEGs GH3.6, GH3, ATRP5, IAA27, SAUR36-like, GH3.6-like and AIP 10A5-like may play important roles in the formation of shoot differences. In summary, these results indicated that stem growth variations of 'Oosterwijk' and 'Red sprite' were associated with DEGs related to phenylpropanoid biosynthesis, phenylalanine metabolism and phenylalanine, tyrosine and tryptophan biosynthesis, as well as auxin content and DEGs related to the auxin signaling pathway.
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Affiliation(s)
- Sini Qin
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-Based Healthcare Functions, Zhejiang A&F University, Hangzhou 311300, China
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Siyi Fu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-Based Healthcare Functions, Zhejiang A&F University, Hangzhou 311300, China
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Ying Yang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Qiumin Sun
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-Based Healthcare Functions, Zhejiang A&F University, Hangzhou 311300, China
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Jingqi Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-Based Healthcare Functions, Zhejiang A&F University, Hangzhou 311300, China
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Yanling Dong
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-Based Healthcare Functions, Zhejiang A&F University, Hangzhou 311300, China
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Xinyi Gu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-Based Healthcare Functions, Zhejiang A&F University, Hangzhou 311300, China
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Tao Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-Based Healthcare Functions, Zhejiang A&F University, Hangzhou 311300, China
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Xiaoting Xie
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Xiaorong Mo
- State Key Laboratory of Plant Physiology and Biochemistry, College of Life Science, Zhejiang University, Hangzhou 310058, China;
| | - Hangjin Jiang
- Center for Data Science, Zhejiang University, Hangzhou 310058, China;
| | - Youxiang Yu
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Jijun Yan
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; (J.Y.); (J.C.)
| | - Jinfang Chu
- National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; (J.Y.); (J.C.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bingsong Zheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-Based Healthcare Functions, Zhejiang A&F University, Hangzhou 311300, China
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
| | - Yi He
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; (S.Q.); (S.F.); (Y.Y.); (Q.S.); (J.W.); (Y.D.); (X.G.); (T.W.); (X.X.); (B.Z.)
- Zhejiang Provincial Key Laboratory of Forest Aromatic Plants-Based Healthcare Functions, Zhejiang A&F University, Hangzhou 311300, China
- National Forestry and Grassland Administration (NFGA) Research Center for Ilex, Hangzhou 311300, China
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13
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Loupit G, Brocard L, Ollat N, Cookson SJ. Grafting in plants: recent discoveries and new applications. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:2433-2447. [PMID: 36846896 DOI: 10.1093/jxb/erad061] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 02/14/2023] [Indexed: 06/06/2023]
Abstract
Grafting is a traditional horticultural technique that makes use of plant wound healing mechanisms to join two different genotypes together to form one plant. In many agricultural systems, grafting with rootstocks controls the vigour of the scion and/or provides tolerance to deleterious soil conditions such as the presence of soil pests or pathogens or limited or excessive water or mineral nutrient supply. Much of our knowledge about the limits to grafting different genotypes together comes from empirical knowledge of horticulturalists. Until recently, researchers believed that grafting monocotyledonous plants was impossible, because they lack a vascular cambium, and that graft compatibility between different scion/rootstock combinations was restricted to closely related genotypes. Recent studies have overturned these ideas and open up the possibility of new research directions and applications for grafting in agriculture. The objective of this review is to describe and assess these recent advances in the field of grafting and, in particular, the molecular mechanisms underlining graft union formation and graft compatibility between different genotypes. The challenges of characterizing the different stages of graft union formation and phenotyping graft compatibility are examined.
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Affiliation(s)
- Grégoire Loupit
- EGFV, Université de Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882, Villenave d'Ornon, France
| | - Lysiane Brocard
- Université de Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, BIC, UMS 3420, US4, F-33000 Bordeaux, France
| | - Nathalie Ollat
- EGFV, Université de Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882, Villenave d'Ornon, France
| | - Sarah Jane Cookson
- EGFV, Université de Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882, Villenave d'Ornon, France
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14
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Yang Y, Huang Y, Ren A, Wan Y, Liu Y. Xylem development and phloem conductivity in relation to the stem mechanical strength of Paeonia lactiflora. JOURNAL OF PLANT PHYSIOLOGY 2023; 283:153963. [PMID: 36905700 DOI: 10.1016/j.jplph.2023.153963] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
The quality of cut Paeonia lactiflora flowers is limited by their low stem mechanical strength, but the underlying mechanism of this low strength is poorly understood. In this study, two P. lactiflora cultivars with distinct stem mechanical strengths (Chui Touhong with low stem mechanical strength and Da Fugui with high stem mechanical strength) were used as test materials. The xylem development was examined at the cellular level, and the phloem conductivity was analyzed by evaluating phloem geometry. The results showed that the secondary cell wall formation of the xylem of Chui Touhong was affected primarily in fiber cells but was affected little in vessel cells. The formation of the secondary cell walls in the xylem fiber cells of Chui Touhong was delayed, resulting in longer and thinner fiber cells with a lack of cellulose and S-lignin in the secondary cell walls. Moreover, the phloem conductivity of Chui Touhong was lower than that of Da Fugui, and more callose was accumulated in the lateral walls of the phloem sieve elements of Chui Touhong. Consequently, the delayed deposition of the secondary cell walls of the xylem fiber cells was the main factor leading to the low stem mechanical strength of Chui Touhong, and the low stem mechanical strength was closely related to the low conductivity of sieve tubes and extensive callose accumulation in the phloem. These findings provide a new perspective on enhancing P. lactiflora stem mechanical strength by targeting single cell level, and lay the foundation for future works on the correlation between phloem long-distance transport and stem mechanical strength.
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Affiliation(s)
- Yang Yang
- School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China; National Engineering Research Center for Floriculture, Beijing, 100083, China; Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, China; Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing, 100083, China
| | - Yiran Huang
- School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China; National Engineering Research Center for Floriculture, Beijing, 100083, China; Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, China; Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing, 100083, China
| | - Anqi Ren
- School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China; National Engineering Research Center for Floriculture, Beijing, 100083, China; Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, China; Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing, 100083, China
| | - Yingling Wan
- School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China; National Engineering Research Center for Floriculture, Beijing, 100083, China; Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, China; Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing, 100083, China.
| | - Yan Liu
- School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China; National Engineering Research Center for Floriculture, Beijing, 100083, China; Beijing Laboratory of Urban and Rural Ecological Environment, Beijing, 100083, China; Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, Beijing, 100083, China.
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15
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Xing G, Zhang Y, Guo J. Environmental Regulation in Evolution and Governance Strategies. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:4906. [PMID: 36981813 PMCID: PMC10049158 DOI: 10.3390/ijerph20064906] [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: 02/12/2023] [Revised: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
Environmental regulation faces theoretical and practical research challenges on global scale, due to differences such as language and policy environment. Research reflects the beneficial exploration of scholars, policymakers, and enterprises in the cognitive and behavioural norms of economic development, environmental protection, and social governance. This study demonstrated that the relevant research is motivated by the enaction of environmental regulations and discussed the influence of relevant research on the evolution of environmental regulations. Under the assumption that environmental regulations are consistent with related research, this study used 9185 papers in the field of environmental regulation from 2000 to 2019 to construct a research network panorama and explored the development and revelation of environmental regulation. The results revealed that environmental regulation research is motivated by the introduction of policies, and regulation is influenced by research evolution with the path of 'competitiveness-technological change-innovation.' In addition, after the twenty-first session of the Conference of the Parties (COP21), the number of studies increased significantly, with the USA in the leading position in the research field. Furthermore, governance strategies were inspired by real events, including the increasing concern with climate change, regional research preferences, and the promotion of information disclosure. These results suggest that environmental governors should focus on climate change, localisation, and mechanisms of information disclosure.
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Affiliation(s)
- Guangyuan Xing
- School of Economics and Finance, Xi’an Jiaotong University, Xi’an 710061, China
| | - Youheng Zhang
- School of Management, Xi’an Jiaotong University, Xi’an 710049, China
| | - Ju’e Guo
- School of Management, Xi’an Jiaotong University, Xi’an 710049, China
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16
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Li M, Dong H, Li J, Dai X, Lin J, Li S, Zhou C, Chiang VL, Li W. PtrVCS2 Regulates Drought Resistance by Changing Vessel Morphology and Stomatal Closure in Populus trichocarpa. Int J Mol Sci 2023; 24:ijms24054458. [PMID: 36901889 PMCID: PMC10003473 DOI: 10.3390/ijms24054458] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/12/2023] [Accepted: 02/16/2023] [Indexed: 03/12/2023] Open
Abstract
Drought has severe effects on plant growth, forest productivity, and survival throughout the world. Understanding the molecular regulation of drought resistance in forest trees can enable effective strategic engineering of novel drought-resistant genotypes of tree species. In this study, we identified a gene, PtrVCS2, encoding a zinc finger (ZF) protein of the ZF-homeodomain transcription factor in Populus trichocarpa (Black Cottonwood) Torr. & A. Gray. ex Hook. Overexpression of PtrVCS2 (OE-PtrVCS2) in P. trichocarpa resulted in reduced growth, a higher proportion of smaller stem vessels, and strong drought-resistance phenotypes. Stomatal movement experiments revealed that the OE-PtrVCS2 transgenics showed lower stomata apertures than wild-type plants under drought conditions. RNA-seq analysis of the OE-PtrVCS2 transgenics showed that PtrVCS2 regulates the expression of multiple genes involved in regulation of stomatal opening and closing, particularly the PtrSULTR3;1-1 gene, and several genes related to cell wall biosynthesis, such as PtrFLA11-12 and PtrPR3-3. Moreover, we found that the water use efficiency of the OE-PtrVCS2 transgenic plants was consistently higher than that of wild type plants when subjected to chronic drought stress. Taken together, our results suggest that PtrVCS2 plays a positive role in improving drought adaptability and resistance in P. trichocarpa.
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Affiliation(s)
- Meng Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Hao Dong
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Jiyuan Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Xiufang Dai
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Jiaojiao Lin
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Shuang Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Chenguang Zhou
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Vincent L. Chiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
- Forest Biotechnology Group, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh, NC 27695, USA
| | - Wei Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
- Correspondence:
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17
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Sidorenko A, Omelyanchuk N, Zemlyanskaya E. Molecular mechanisms of vascular tissue patterning in Arabidopsis thaliana L. roots. Vavilovskii Zhurnal Genet Selektsii 2022; 26:721-732. [PMID: 36694717 PMCID: PMC9834716 DOI: 10.18699/vjgb-22-88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/08/2022] [Accepted: 11/10/2022] [Indexed: 01/06/2023] Open
Abstract
A vascular system in plants is a product of aromorphosis that enabled them to colonize land because it delivers water, mineral and organic compounds to plant organs and provides effective communications between organs and mechanical support. Vascular system development is a common object of fundamental research in plant development biology. In the model plant Arabidopsis thaliana, early stages of vascular tissue formation in the root are a bright example of the self-organization of a bisymmetric (having two planes of symmetry) pattern of hormone distribution, which determines vascular cell fates. In the root, vascular tissue development comprises four stages: (1) specification of progenitor cells for the provascular meristem in early embryonic stages, (2) the growth and patterning of the embryo provascular meristem, (3) postembryonic maintenance of the cell identity in the vascular tissue initials within the root apical meristem, and (4) differentiation of their descendants. Although the anatomical details of A. thaliana root vasculature development have long been known and described in detail, our knowledge of the underlying molecular and genetic mechanisms remains limited. In recent years, several important advances have been made, shedding light on the regulation of the earliest events in provascular cells specification. In this review, we summarize the latest data on the molecular and genetic mechanisms of vascular tissue patterning in A. thaliana root. The first part of the review describes the root vasculature ontogeny, and the second reconstructs the sequence of regulatory events that underlie this histogenesis and determine the development of the progenitors of the vascular initials in the embryo and organization of vascular initials in the seedling root.
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Affiliation(s)
- A.D. Sidorenko
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, RussiaNovosibirsk State University, Novosibirsk, Russia
| | - N.A. Omelyanchuk
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - E.V. Zemlyanskaya
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, RussiaNovosibirsk State University, Novosibirsk, Russia
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18
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Sugimoto H, Tanaka T, Muramoto N, Kitagawa-Yogo R, Mitsukawa N. Transcription factor NTL9 negatively regulates Arabidopsis vascular cambium development during stem secondary growth. PLANT PHYSIOLOGY 2022; 190:1731-1746. [PMID: 35951755 PMCID: PMC9614505 DOI: 10.1093/plphys/kiac368] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 07/09/2022] [Indexed: 06/15/2023]
Abstract
In plant stems, secondary vascular development is established through the differentiation of cylindrical vascular cambium, producing secondary xylem (wood) and phloem (bast), which have economic importance. However, there is a dearth of knowledge on the genetic mechanism underlying this process. NAC with Transmembrane Motif 1-like transcription factor 9 (NTL9) plays a central role in abiotic and immune signaling responses. Here, we investigated the role of NTL9 in vascular cambium development in Arabidopsis (Arabidopsis thaliana) inflorescence stems by identifying and characterizing an Arabidopsis phloem circular-timing (pct) mutant. The pct mutant exhibited enhanced vascular cambium formation following secondary phloem production. In the pct mutant, although normal organization in vascular bundles was maintained, vascular cambium differentiation occurred at an early stage of stem development, which was associated with increased expression of cambium-/phloem-related genes and enhanced cambium activity. The pct mutant stem phenotype was caused by a recessive frameshift mutation that disrupts the transmembrane (TM) domain of NTL9. Our results indicate that NTL9 functions as a negative regulator of cambial activity and has a suppressive role in developmental transition to the secondary growth phase in stem vasculature, which is necessary for its precise TM domain-mediated regulation.
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Affiliation(s)
| | | | - Nobuhiko Muramoto
- Toyota Central R&D Laboratories, Inc., Nagakute, Aichi 480-1192, Japan
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19
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The Regulation of Xylem Development by Transcription Factors and Their Upstream MicroRNAs. Int J Mol Sci 2022; 23:ijms231710134. [PMID: 36077531 PMCID: PMC9456210 DOI: 10.3390/ijms231710134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 08/27/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
Xylem, as a unique organizational structure of vascular plants, bears water transport and supports functions necessary for plant survival. Notably, secondary xylem in the stem (i.e., wood) also has important economic and ecological value. In view of this, the regulation of xylem development has been widely concerned. In recent years, studies on model plants Arabidopsis and poplar have shown that transcription factors play important regulatory roles in various processes of xylem development, including the directional differentiation of procambium and cambium into xylem, xylem arrangement patterns, secondary cell wall formation and programmed cell death. This review focuses on the regulatory roles of widely and thoroughly studied HD-ZIP, MYB and NAC transcription factor gene families in xylem development, and it also pays attention to the regulation of their upstream microRNAs. In addition, the existing questions in the research and future research directions are prospected.
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20
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Lu Y, Chuan M, Wang H, Chen R, Tao T, Zhou Y, Xu Y, Li P, Yao Y, Xu C, Yang Z. Genetic and molecular factors in determining grain number per panicle of rice. FRONTIERS IN PLANT SCIENCE 2022; 13:964246. [PMID: 35991390 PMCID: PMC9386260 DOI: 10.3389/fpls.2022.964246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
It was suggested that the most effective way to improve rice grain yield is to increase the grain number per panicle (GN) through the breeding practice in recent decades. GN is a representative quantitative trait affected by multiple genetic and environmental factors. Understanding the mechanisms controlling GN has become an important research field in rice biotechnology and breeding. The regulation of rice GN is coordinately controlled by panicle architecture and branch differentiation, and many GN-associated genes showed pleiotropic effect in regulating tillering, grain size, flowering time, and other domestication-related traits. It is also revealed that GN determination is closely related to vascular development and the metabolism of some phytohormones. In this review, we summarize the recent findings in rice GN determination and discuss the genetic and molecular mechanisms of GN regulators.
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Affiliation(s)
- Yue Lu
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
| | - Mingli Chuan
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
| | - Hanyao Wang
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
| | - Rujia Chen
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
| | - Tianyun Tao
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
| | - Yong Zhou
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou, China
| | - Yang Xu
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
| | - Pengcheng Li
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
| | - Youli Yao
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
| | - Chenwu Xu
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou, China
| | - Zefeng Yang
- Key Laboratory of Plant Functional Genomics of the Ministry of Education, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, College of Agriculture, Yangzhou University, Yangzhou, China
- Jiangsu Key Laboratory of Crop Genetics and Physiology, Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education, Yangzhou University, Yangzhou, China
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21
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Kastanaki E, Blanco-Touriñán N, Sarazin A, Sturchler A, Gujas B, Vera-Sirera F, Agustí J, Rodriguez-Villalon A. A genetic framework for proximal secondary vein branching in the Arabidopsis thaliana embryo. Development 2022; 149:275816. [PMID: 35723181 PMCID: PMC9270971 DOI: 10.1242/dev.200403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 05/09/2022] [Indexed: 01/09/2023]
Abstract
Over time, plants have evolved flexible self-organizing patterning mechanisms to adapt tissue functionality for continuous organ growth. An example of this process is the multicellular organization of cells into a vascular network in foliar organs. An important, yet poorly understood component of this process is secondary vein branching, a mechanism employed to extend vascular tissues throughout the cotyledon surface. Here, we uncover two distinct branching mechanisms during embryogenesis by analyzing the discontinuous vein network of the double mutant cotyledon vascular pattern 2 (cvp2) cvp2-like 1 (cvl1). Similar to wild-type embryos, distal veins in cvp2 cvl1 embryos arise from the bifurcation of cell files contained in the midvein, whereas proximal branching is absent in this mutant. Restoration of this process can be achieved by increasing OCTOPUS dosage as well as by silencing RECEPTOR-LIKE PROTEIN KINASE 2 (RPK2) expression. Although RPK2-dependent rescue of cvp2 cvl1 is auxin- and CLE peptide-independent, distal branching involves polar auxin transport and follows a distinct regulatory mechanism. Our work defines a genetic network that confers plasticity to Arabidopsis embryos to spatially adapt vascular tissues to organ growth.
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Affiliation(s)
- Elizabeth Kastanaki
- Group of Plant Vascular Development, Swiss Federal Institute of Technology (ETH) Zurich, CH-8092 Zurich, Switzerland
| | - Noel Blanco-Touriñán
- Group of Plant Vascular Development, Swiss Federal Institute of Technology (ETH) Zurich, CH-8092 Zurich, Switzerland,Authors for correspondence (; )
| | - Alexis Sarazin
- Group of RNA Biology, Swiss Federal Institute of Technology (ETH) Zurich, CH-8092 Zurich, Switzerland
| | - Alessandra Sturchler
- Group of Plant Vascular Development, Swiss Federal Institute of Technology (ETH) Zurich, CH-8092 Zurich, Switzerland
| | - Bojan Gujas
- Group of Plant Vascular Development, Swiss Federal Institute of Technology (ETH) Zurich, CH-8092 Zurich, Switzerland
| | - Francisco Vera-Sirera
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas (CSIC)-Universitat Politècnica de València (UPV), 46022 Valencia, Spain
| | - Javier Agustí
- Instituto de Biología Molecular y Celular de Plantas, Consejo Superior de Investigaciones Científicas (CSIC)-Universitat Politècnica de València (UPV), 46022 Valencia, Spain
| | - Antia Rodriguez-Villalon
- Group of Plant Vascular Development, Swiss Federal Institute of Technology (ETH) Zurich, CH-8092 Zurich, Switzerland,Authors for correspondence (; )
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22
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Ai G, Yang DL, Dou D. The warfare for plant highway: vascular plant-microbe interaction pinpoints lignin. STRESS BIOLOGY 2022; 2:24. [PMID: 37676368 PMCID: PMC10441898 DOI: 10.1007/s44154-022-00047-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/19/2022] [Indexed: 09/08/2023]
Abstract
Plant vascular pathogens are one kind of destructive pathogens in agricultural production. However, mechanisms behind the vascular pathogen-recognition and the subsequent defense responses of plants are not well known. A recent pioneering study on plant vascular immunity discovered a conserved MKP1-MPK-MYB signaling cascade that activates lignin biosynthesis in vascular tissues to confer vascular resistance in both monocot rice and the dicot Arabidopsis. The breakthrough provides a novel view on plant immunity to vascular pathogens and offers a potential strategy for the future breeding of disease-resistant crops.
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Affiliation(s)
- Gan Ai
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dong-Lei Yang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Daolong Dou
- College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China.
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23
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Abstract
Vanderschuren and Agusti introduce plant storage roots.
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Affiliation(s)
- Hervé Vanderschuren
- Tropical Crop Improvement Laboratory, Biosystems Department, KU Leuven, Belgium; Plant Genetics and Rhizosphere Processes Laboratory, TERRA Teaching and Research Center, University of Liège, Gembloux Agro-Bio Tech, Gembloux, Belgium.
| | - Javier Agusti
- IBMCP, Departament de Producció Vegetal, Universitat Politècnica de València, Valencia, Spain.
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24
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Zhang L, Xie S, Yang C, Cao D, Fan S, Zhang X. Comparative Transcriptome Analysis Reveals Candidate Genes and Pathways for Potential Branch Growth in Elm ( Ulmus pumila) Cultivars. BIOLOGY 2022; 11:711. [PMID: 35625439 PMCID: PMC9139171 DOI: 10.3390/biology11050711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/29/2022] [Accepted: 05/02/2022] [Indexed: 11/16/2022]
Abstract
Wood plays a vital role in human life. It is important to study the thickening mechanism of tree branches and explore the mechanism of wood formation. Elm (Ulmus pumila) is a strong essential wood, and it is widely used in cabinets, sculptures, and ship making. In the present study, phenotypic and comparative transcriptomic analyses were performed in U. pumila fast- (UGu17 and UZuantian) and slow-growing cultivars (U81-07 and U82-39). Phenotypic observation showed that the thickness of secondary xylem of 2-year-old fast-growing branches was greater compared with slow-growing cultivars. A total of 9367 (up = 4363, down = 5004), 7159 (3413/3746), 7436 (3566/3870), and 5707 (2719/2988) differentially expressed genes (DEGs) were identified between fast- and slow-growing cultivars. Moreover, GO and KEGG enrichment analyses predicted that many pathways were involved in vascular development and transcriptional regulation in elm, such as "plant-type secondary cell wall biogenesis", "cell wall thickening", and "phenylpropanoid biosynthesis". NAC domain transcriptional factors (TFs) and their master regulators (VND1/MYB26), cellulose synthase catalytic subunits (CESAs) (such as IRX5/IRX3/IRX1), xylan synthesis, and secondary wall thickness (such as IRX9/IRX10/IRX8) were supposed to function in the thickening mechanism of elm branches. Our results indicated that the general phenylpropanoid pathway (such as PAL/C4H/4CL) and lignin metabolism (such as HCL/CSE/CCoAOMT/CCR/F5H) had vital functions in the growth of elm branches. Our transcriptome data were consistent with molecular results for branch thickening in elm cultivars.
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Affiliation(s)
| | | | | | | | - Shoujin Fan
- Key Lab of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan 250014, China; (L.Z.); (S.X.); (C.Y.); (D.C.)
| | - Xuejie Zhang
- Key Lab of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan 250014, China; (L.Z.); (S.X.); (C.Y.); (D.C.)
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25
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Dinant S, Le Hir R. Delving deeper into the link between sugar transport, sugar signaling, and vascular system development. PHYSIOLOGIA PLANTARUM 2022; 174:e13684. [PMID: 35396718 DOI: 10.1111/ppl.13684] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/31/2022] [Accepted: 04/06/2022] [Indexed: 06/14/2023]
Abstract
Plant growth and development rely on the transport and use of sugars produced during photosynthesis. Sugars have a dual function as nutrients and signal molecules in the cell. Many factors maintaining sugar homeostasis and signaling are now identified, but our understanding of the mechanisms involved in coordinating intracellular and intercellular sugar translocation is still limited. We also know little about the interplay between sugar transport and signaling and the formation of the vascular system, which controls long-distance sugar translocation. Sugar signaling has been proposed to play a role; however, evidence to support this hypothesis is still limited. Here, we exploited recent transcriptomics datasets produced in aerial organs of Arabidopsis to identify genes coding for sugar transporters or signaling components expressed in the vascular cells. We identified genes belonging to sugar transport and signaling for which no information is available regarding a role in vasculature development. In addition, the transcriptomics datasets obtained from sugar-treated Arabidopsis seedlings were used to assess the sugar-responsiveness of known genes involved in vascular differentiation. Interestingly, several key regulators of vascular development were found to be regulated by either sucrose or glucose. Especially CLE41, which controls the procambial cell fate, was oppositely regulated by sucrose or glucose in these datasets. Even if more experimental data are necessary to confirm these findings, this survey supports a link between sugar transport/signaling and vascular system development.
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Affiliation(s)
- Sylvie Dinant
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
| | - Rozenn Le Hir
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Versailles, France
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26
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Yu D, Janz D, Zienkiewicz K, Herrfurth C, Feussner I, Chen S, Polle A. Wood Formation under Severe Drought Invokes Adjustment of the Hormonal and Transcriptional Landscape in Poplar. Int J Mol Sci 2021; 22:9899. [PMID: 34576062 PMCID: PMC8493802 DOI: 10.3390/ijms22189899] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/04/2021] [Accepted: 09/08/2021] [Indexed: 11/17/2022] Open
Abstract
Drought is a severe environmental stress that exerts negative effects on plant growth. In trees, drought leads to reduced secondary growth and altered wood anatomy. The mechanisms underlying wood stress adaptation are not well understood. Here, we investigated the physiological, anatomical, hormonal, and transcriptional responses of poplar to strong drought. Drought-stressed xylem was characterized by higher vessel frequencies, smaller vessel lumina, and thicker secondary fiber cell walls. These changes were accompanied by strong increases in abscisic acid (ABA) and antagonistic changes in salicylic acid in wood. Transcriptional evidence supported ABA biosynthesis and signaling in wood. Since ABA signaling activates the fiber-thickening factor NST1, we expected upregulation of the secondary cell wall (SCW) cascade under stress. By contrast, transcription factors and biosynthesis genes for SCW formation were down-regulated, whereas a small set of cellulose synthase-like genes and a huge array of genes involved in cell wall modification were up-regulated in drought-stressed wood. Therefore, we suggest that ABA signaling monitors normal SCW biosynthesis and that drought causes a switch from normal to "stress wood" formation recruiting a dedicated set of genes for cell wall biosynthesis and remodeling. This proposition implies that drought-induced changes in cell wall properties underlie regulatory mechanisms distinct from those of normal wood.
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Affiliation(s)
- Dade Yu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China;
- Forest Botany and Tree Physiology, Büsgen-Institute, University of Goettingen, 37077 Göttingen, Germany;
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Dennis Janz
- Forest Botany and Tree Physiology, Büsgen-Institute, University of Goettingen, 37077 Göttingen, Germany;
| | - Krzysztof Zienkiewicz
- Department of Plant Biochemistry, Albrecht-Von-Haller Institute, University of Goettingen, 37077 Göttingen, Germany; (K.Z.); (C.H.); (I.F.)
| | - Cornelia Herrfurth
- Department of Plant Biochemistry, Albrecht-Von-Haller Institute, University of Goettingen, 37077 Göttingen, Germany; (K.Z.); (C.H.); (I.F.)
- Service Unit for Metabolomics and Lipidomics, Göttingen Center of Molecular Biosciences (GZMB), University of Goettingen, 37077 Göttingen, Germany
| | - Ivo Feussner
- Department of Plant Biochemistry, Albrecht-Von-Haller Institute, University of Goettingen, 37077 Göttingen, Germany; (K.Z.); (C.H.); (I.F.)
- Service Unit for Metabolomics and Lipidomics, Göttingen Center of Molecular Biosciences (GZMB), University of Goettingen, 37077 Göttingen, Germany
- Department of Plant Biochemistry, Göttingen Center of Molecular Biosciences (GZMB), University of Goettingen, 37077 Göttingen, Germany
| | - Shaoliang Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China;
| | - Andrea Polle
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China;
- Forest Botany and Tree Physiology, Büsgen-Institute, University of Goettingen, 37077 Göttingen, Germany;
- Department of Plant Biochemistry, Göttingen Center of Molecular Biosciences (GZMB), University of Goettingen, 37077 Göttingen, Germany
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27
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Li H, Testerink C, Zhang Y. How roots and shoots communicate through stressful times. TRENDS IN PLANT SCIENCE 2021; 26:940-952. [PMID: 33896687 DOI: 10.1016/j.tplants.2021.03.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 02/19/2021] [Accepted: 03/16/2021] [Indexed: 05/06/2023]
Abstract
When plants face an environmental stress such as water deficit, soil salinity, high temperature, or shade, good communication between above- and belowground organs is necessary to coordinate growth and development. Various signals including hormones, peptides, proteins, hydraulic signals, and metabolites are transported mostly through the vasculature to distant tissues. How shoots and roots synchronize their response to stress using mobile signals is an emerging field of research. We summarize recent advances on mobile signals regulating shoot stomatal movement and root development in response to highly localized environmental cues. In addition, we highlight how the vascular system is not only a conduit but is also flexible in its development in response to abiotic stress.
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Affiliation(s)
- Hongfei Li
- Laboratory of Plant Physiology, Plant Sciences Group, Wageningen University and Research, 6708PB Wageningen, The Netherlands
| | - Christa Testerink
- Laboratory of Plant Physiology, Plant Sciences Group, Wageningen University and Research, 6708PB Wageningen, The Netherlands.
| | - Yanxia Zhang
- Laboratory of Plant Physiology, Plant Sciences Group, Wageningen University and Research, 6708PB Wageningen, The Netherlands.
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28
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Ruiz-Trillo I, de Mendoza A. Towards understanding the origin of animal development. Development 2020; 147:147/23/dev192575. [PMID: 33272929 DOI: 10.1242/dev.192575] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Almost all animals undergo embryonic development, going from a single-celled zygote to a complex multicellular adult. We know that the patterning and morphogenetic processes involved in development are deeply conserved within the animal kingdom. However, the origins of these developmental processes are just beginning to be unveiled. Here, we focus on how the protist lineages sister to animals are reshaping our view of animal development. Most intriguingly, many of these protistan lineages display transient multicellular structures, which are governed by similar morphogenetic and gene regulatory processes as animal development. We discuss here two potential alternative scenarios to explain the origin of animal embryonic development: either it originated concomitantly at the onset of animals or it evolved from morphogenetic processes already present in their unicellular ancestors. We propose that an integrative study of several unicellular taxa closely related to animals will allow a more refined picture of how the last common ancestor of animals underwent embryonic development.
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Affiliation(s)
- Iñaki Ruiz-Trillo
- Institut de Biologia Evolutiva (CSIC-Universitat Pompeu Fabra), Passeig Marítim de la Barceloneta, 37-49, 08003 Barcelona, Spain .,Departament de Genètica, Microbiologia i Estadística, Institut de Recerca de la Biodiversitat, Universitat de Barcelona, Avinguda Diagonal 643, 08028 Barcelona, Spain.,ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
| | - Alex de Mendoza
- Queen Mary University of London, School of Biological and Chemical Sciences, London E1 4DQ, UK
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