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Sun RZ, Wang YY, Liu XQ, Yang ZL, Deng X. Structure and dynamics of microbial communities associated with the resurrection plant Boea hygrometrica in response to drought stress. PLANTA 2024; 260:24. [PMID: 38858226 DOI: 10.1007/s00425-024-04459-2] [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: 03/14/2024] [Accepted: 06/06/2024] [Indexed: 06/12/2024]
Abstract
MAIN CONCLUSION The resurrection plant Boea hygrometrica selectively recruits and assembles drought-specific microbial communities across the plant-soil compartments, which may benefit plant growth and fitness under extreme drought conditions. Plant-associated microbes are essential for facilitating plant growth and fitness under drought stress. The resurrection plant Boea hygrometrica in natural habitats with seasonal rainfall can survive rapid desiccation, yet their interaction with microbiomes under drought conditions remains unexplored. This study examined the bacterial and fungal microbiome structure and drought response across plant-soil compartments of B. hygrometrica by high-throughput amplicon sequencing of 16S rRNA gene and internal transcribed spacer. Our results demonstrated that the diversity, composition, and functional profile of the microbial community varied considerably across the plant-soil compartments and were strongly affected by drought stress. Bacterial and fungal diversity was significantly reduced from soil to endosphere and belowground to aboveground compartments. The compartment-specific enrichment of the dominant bacteria phylum Cyanobacteriota and genus Methylorubrum in leaf endosphere, genera Pseudonocardia in rhizosphere soil and Actinoplanes in root endosphere, and fungal phylum Ascomycota in the aboveground compartments and genera Knufia in root endosphere and Cladosporium in leaf endosphere composed part of the core microbiota with corresponding enrichment of beneficial functions for plant growth and fitness. Moreover, the recruitment of dominant microbial genera Sphingosinicella and Plectosphaerella, Ceratobasidiaceae mycorrhizal fungi, and numerous plant growth-promoting bacteria involving nutrient supply and auxin regulation was observed in desiccated B. hygrometrica plants. Our results suggest that the stable assembled drought-specific microbial community of B. hygrometrica may contribute to plant survival under extreme environments and provide valuable microbial resources for the microbe-mediated drought tolerance enhancement in crops.
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Affiliation(s)
- Run-Ze Sun
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China.
- China National Botanical Garden, 100093, Beijing, China.
| | - Yuan-Yuan Wang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Xiao-Qiang Liu
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Zhao-Lin Yang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Xin Deng
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, 100093, Beijing, China.
- China National Botanical Garden, 100093, Beijing, China.
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Vieira EA, Gaspar M, Caldeira CF, Munné-Bosch S, Braga MR. Desiccation tolerance in the resurrection plant Barbacenia graminifolia involves changes in redox metabolism and carotenoid oxidation. FRONTIERS IN PLANT SCIENCE 2024; 15:1344820. [PMID: 38425802 PMCID: PMC10902171 DOI: 10.3389/fpls.2024.1344820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 01/26/2024] [Indexed: 03/02/2024]
Abstract
Desiccation tolerance in vegetative tissues enables resurrection plants to remain quiescent under severe drought and rapidly recover full metabolism once water becomes available. Barbacenia graminifolia is a resurrection plant that occurs at high altitudes, typically growing on rock slits, exposed to high irradiance and limited water availability. We analyzed the levels of reactive oxygen species (ROS) and antioxidants, carotenoids and its cleavage products, and stress-related phytohormones in fully hydrated, dehydrated, and rehydrated leaves of B. graminifolia. This species exhibited a precise adjustment of its antioxidant metabolism to desiccation. Our results indicate that this adjustment is associated with enhanced carotenoid and apocarotenoids, α-tocopherol and compounds of ascorbate-glutathione cycle. While α-carotene and lutein increased in dried-leaves suggesting effective protection of the light-harvesting complexes, the decrease in β-carotene was accompanied of 10.2-fold increase in the content of β-cyclocitral, an apocarotenoid implicated in the regulation of abiotic stresses, compared to hydrated plants. The principal component analysis showed that dehydrated plants at 30 days formed a separate cluster from both hydrated and dehydrated plants for up to 15 days. This regulation might be part of the protective metabolic strategies employed by this resurrection plant to survive water scarcity in its inhospitable habitat.
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Affiliation(s)
| | - Marilia Gaspar
- Biodiversity Conservation Center, Institute of Environmental Research, São Paulo, Brazil
| | | | - Sergi Munné-Bosch
- Department of Evolutionary Biology, Ecology, and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Marcia Regina Braga
- Biodiversity Conservation Center, Institute of Environmental Research, São Paulo, Brazil
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3
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Liu J, Wang Y, Chen X, Tang L, Yang Y, Yang Z, Sun R, Mladenov P, Wang X, Liu X, Jin S, Li H, Zhao L, Wang Y, Wang W, Deng X. Specific metabolic and cellular mechanisms of the vegetative desiccation tolerance in resurrection plants for adaptation to extreme dryness. PLANTA 2024; 259:47. [PMID: 38285274 DOI: 10.1007/s00425-023-04323-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/24/2023] [Indexed: 01/30/2024]
Abstract
MAIN CONCLUSION Substantial advancements have been made in our comprehension of vegetative desiccation tolerance in resurrection plants, and further research is still warranted to elucidate the mechanisms governing distinct cellular adaptations. Resurrection plants are commonly referred to as a small group of extremophile vascular plants that exhibit vegetative desiccation tolerance (VDT), meaning that their vegetative tissues can survive extreme drought stress (> 90% water loss) and subsequently recover rapidly upon rehydration. In contrast to most vascular plants, which typically employ water-saving strategies to resist partial water loss and optimize water absorption and utilization to a limited extent under moderate drought stress, ultimately succumbing to cell death when confronted with severe and extreme drought conditions, resurrection plants have evolved unique mechanisms of VDT, enabling them to maintain viability even in the absence of water for extended periods, permitting them to rejuvenate without harm upon water contact. Understanding the mechanisms associated with VDT in resurrection plants holds the promise of expanding our understanding of how plants adapt to exceedingly arid environments, a phenomenon increasingly prevalent due to global warming. This review offers an updated and comprehensive overview of recent advances in VDT within resurrection plants, with particular emphasis on elucidating the metabolic and cellular adaptations during desiccation, including the intricate processes of cell wall folding and the prevention of cell death. Furthermore, this review highlights existing unanswered questions in the field, suggests potential avenues for further research to gain deeper insights into the remarkable VDT adaptations observed in resurrection plants, and highlights the potential application of VDT-derived techniques in crop breeding to enhance tolerance to extreme drought stress.
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Affiliation(s)
- Jie Liu
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology, Shouguang, 262700, China
| | - Yuanyuan Wang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiuxiu Chen
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ling Tang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang Yang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhaolin Yang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Runze Sun
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
| | - Petko Mladenov
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- Agrobioinstitute, Agricultural Academy Bulgaria, Sofia, 1164, Bulgaria
| | - Xiaohua Wang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- China National Botanical Garden, Beijing, 100093, China
| | - Xiaoqiang Liu
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Songsong Jin
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hui Li
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li Zhao
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yafeng Wang
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
- Beijing University of Agriculture, Beijing, 102206, China
| | - Wenhe Wang
- Beijing University of Agriculture, Beijing, 102206, China
| | - Xin Deng
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
- China National Botanical Garden, Beijing, 100093, China.
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Georgieva K, Mihailova G, Gigova L, Popova AV, Velitchkova M, Simova-Stoilova L, Sági-Kazár M, Zelenyánszki H, Solymosi K, Solti Á. Antioxidative Defense, Suppressed Nitric Oxide Accumulation, and Synthesis of Protective Proteins in Roots and Leaves Contribute to the Desiccation Tolerance of the Resurrection Plant Haberlea rhodopensis. PLANTS (BASEL, SWITZERLAND) 2023; 12:2834. [PMID: 37570988 PMCID: PMC10421438 DOI: 10.3390/plants12152834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023]
Abstract
The desiccation tolerance of plants relies on defense mechanisms that enable the protection of macromolecules, biological structures, and metabolism. Although the defense of leaf tissues exposed to solar irradiation is challenging, mechanisms that protect the viability of the roots, yet largely unexplored, are equally important for survival. Although the photosynthetic apparatus in leaves contributes to the generation of oxidative stress under drought stress, we hypothesized that oxidative stress and thus antioxidative defense is also predominant in the roots. Thus, we aimed for a comparative analysis of the protective mechanisms in leaves and roots during the desiccation of Haberlea rhodopensis. Consequently, a high content of non-enzymatic antioxidants and high activity of antioxidant enzymes together with the activation of specific isoenzymes were found in both leaves and roots during the final stages of desiccation of H. rhodopensis. Among others, catalase and glutathione reductase activity showed a similar tendency of changes in roots and leaves, whereas, unlike that in the leaves, superoxide dismutase activity was enhanced under severe but not under medium desiccation in roots. Nitric oxide accumulation in the root tips was found to be sensitive to water restriction but suppressed under severe desiccation. In addition to the antioxidative defense, desiccation induced an enhanced abundance of dehydrins, ELIPs, and sHSP 17.7 in leaves, but this was significantly better in roots. In contrast to leaf cells, starch remained in the cells of the central cylinder of desiccated roots. Taken together, protective compounds and antioxidative defense mechanisms are equally important in protecting the roots to survive desiccation. Since drought-induced damage to the root system fundamentally affects the survival of plants, a better understanding of root desiccation tolerance mechanisms is essential to compensate for the challenges of prolonged dry periods.
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Affiliation(s)
- Katya Georgieva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Academic Georgi Bonchev Str., Building 21, 1113 Sofia, Bulgaria; (G.M.); (L.G.); (L.S.-S.)
| | - Gergana Mihailova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Academic Georgi Bonchev Str., Building 21, 1113 Sofia, Bulgaria; (G.M.); (L.G.); (L.S.-S.)
| | - Liliana Gigova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Academic Georgi Bonchev Str., Building 21, 1113 Sofia, Bulgaria; (G.M.); (L.G.); (L.S.-S.)
| | - Antoaneta V. Popova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Academic Georgi Bonchev Str., Building 21, 1113 Sofia, Bulgaria; (A.V.P.); (M.V.)
| | - Maya Velitchkova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Academic Georgi Bonchev Str., Building 21, 1113 Sofia, Bulgaria; (A.V.P.); (M.V.)
| | - Lyudmila Simova-Stoilova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Academic Georgi Bonchev Str., Building 21, 1113 Sofia, Bulgaria; (G.M.); (L.G.); (L.S.-S.)
| | - Máté Sági-Kazár
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter Sétány 1/C, H-1117 Budapest, Hungary; (M.S.-K.); (H.Z.); (Á.S.)
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter Sétány 1/C, H-1117 Budapest, Hungary
| | - Helga Zelenyánszki
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter Sétány 1/C, H-1117 Budapest, Hungary; (M.S.-K.); (H.Z.); (Á.S.)
- Doctoral School of Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter Sétány 1/C, H-1117 Budapest, Hungary
| | - Katalin Solymosi
- Department of Plant Anatomy, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter Sétány 1/C, H-1117 Budapest, Hungary;
| | - Ádám Solti
- Department of Plant Physiology and Molecular Plant Biology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter Sétány 1/C, H-1117 Budapest, Hungary; (M.S.-K.); (H.Z.); (Á.S.)
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5
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Gesneriads, a Source of Resurrection and Double-Tolerant Species: Proposal of New Desiccation- and Freezing-Tolerant Plants and Their Physiological Adaptations. BIOLOGY 2023; 12:biology12010107. [PMID: 36671798 PMCID: PMC9855904 DOI: 10.3390/biology12010107] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 01/13/2023]
Abstract
Gesneriaceae is a pantropical family of plants that, thanks to their lithophytic and epiphytic growth forms, have developed different strategies for overcoming water scarcity. Desiccation tolerance or "resurrection" ability is one of them: a rare phenomenon among angiosperms that involves surviving with very little relative water content in their tissues until water is again available. Physiological responses of desiccation tolerance are also activated during freezing temperatures, a stress that many of the resurrection gesneriads suffer due to their mountainous habitat. Therefore, research on desiccation- and freezing-tolerant gesneriads is a great opportunity for crop improvement, and some of them have become reference resurrection angiosperms (Dorcoceras hygrometrica, Haberlea rhodopensis and Ramonda myconi). However, their difficult indoor cultivation and outdoor accessibility are major obstacles for their study. Therefore, this review aims to identify phylogenetic, geoclimatic, habitat, and morphological features in order to propose new tentative resurrection gesneriads as a way of making them more reachable to the scientific community. Additionally, shared and species-specific physiological responses to desiccation and freezing stress have been gathered as a stress response metabolic basis of the family.
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6
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Shoko R, Magogo B, Pullen J, Mudziwapasi R, Ndlovu J. Construction and analysis of protein-protein interaction networks based on nuclear proteomics data of the desiccation-tolerant Xerophyta schlechteri leaves subjected to dehydration stress. Commun Integr Biol 2023; 16:2193000. [PMID: 36969388 PMCID: PMC10038031 DOI: 10.1080/19420889.2023.2193000] [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] [Indexed: 03/29/2023] Open
Abstract
In order to understand the mechanism of desiccation tolerance in Xerophyta schlechteri, we carried out an in silico study to identify hub proteins and functional modules in the nuclear proteome of the leaves. Protein-protein interaction networks were constructed and analyzed from proteome data obtained from Abdalla and Rafudeen. We constructed networks in Cytoscape using the GeneMania software and analyzed them using a Network Analyzer. Functional enrichment analysis of key proteins in the respective networks was done using GeneMania network enrichment analysis, and GO (Gene Ontology) terms were summarized using REViGO. Also, community analysis of differentially expressed proteins was conducted using the Cytoscape Apps, GeneMania and ClusterMaker. Functional modules associated with the communities were identified using an online tool, ShinyGO. We identified HSP 70-2 as the super-hub protein among the up-regulated proteins. On the other hand, 40S ribosomal protein S2-3 (a protein added by GeneMANIA) was identified as a super-hub protein associated with the down-regulated proteins. For up-regulated proteins, the enriched biological process terms were those associated with chromatin organization and negative regulation of transcription. In the down-regulated protein-set, terms associated with protein synthesis were significantly enriched. Community analysis identified three functional modules that can be categorized as chromatin organization, anti-oxidant activity and metabolic processes.
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Affiliation(s)
- Ryman Shoko
- Department of Biology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
- CONTACT Ryman Shoko Department of Biology, Chinhoyi University of Technology, Private Bag 7724, Chinhoyi, Zimbabwe
| | - Babra Magogo
- Department of Biology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | - Jessica Pullen
- Department of Animal Science and Rangeland Management, Lupane State University, Lupane, Zimbabwe
| | - Reagan Mudziwapasi
- Department of Research and Innovation, Midlands State University, Gweru, Zimbabwe
| | - Joice Ndlovu
- Department of Biology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
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7
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Alejo-Jacuinde G, Kean-Galeno T, Martínez-Gallardo N, Tejero-Díez JD, Mehltreter K, Délano-Frier JP, Oliver MJ, Simpson J, Herrera-Estrella L. Viability markers for determination of desiccation tolerance and critical stages during dehydration in Selaginella species. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:3898-3912. [PMID: 35312760 PMCID: PMC9232207 DOI: 10.1093/jxb/erac121] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 03/19/2022] [Indexed: 05/16/2023]
Abstract
While most plants die below a threshold of water content, desiccation-tolerant species display specific responses that allow them to survive extreme dehydration. Some of these responses are activated at critical stages during water loss and could represent the difference between desiccation tolerance (DT) and death. Here, we report the development of a simple and reproducible system to determine DT in Selaginella species. The system is based on exposure of excised tissue to a dehydration agent inside small containers, and subsequent evaluation for tissue viability. We evaluated several methodologies to determine viability upon desiccation including: triphenyltetrazolium chloride (TTC) staining, the quantum efficiency of PSII, antioxidant potential, and relative electrolyte leakage. Our results show that the TTC test is a simple and accurate assay to identify novel desiccation-tolerant Selaginella species, and can also indicate viability in other desiccation-tolerant models (i.e. ferns and mosses). The system we developed is particularly useful to identify critical points during the dehydration process. We found that a desiccation-sensitive Selaginella species shows a change in viability when dehydrated to 40% relative water content, indicating the onset of a critical condition at this water content. Comparative studies at critical stages could provide a better understanding of DT mechanisms and unravel insights into the key responses to survive desiccation.
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Affiliation(s)
- Gerardo Alejo-Jacuinde
- Institute of Genomics for Crop Abiotic Stress Tolerance (IGCAST), Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA
- National Laboratory of Genomics for Biodiversity (Langebio), Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 36824 Irapuato, Guanajuato, Mexico
- Department of Genetic Engineering, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 36824 Irapuato, Guanajuato, Mexico
| | - Tania Kean-Galeno
- Institute of Genomics for Crop Abiotic Stress Tolerance (IGCAST), Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA
- National Laboratory of Genomics for Biodiversity (Langebio), Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 36824 Irapuato, Guanajuato, Mexico
| | - Norma Martínez-Gallardo
- Department of Biotechnology and Biochemistry, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 36824 Irapuato, Guanajuato, Mexico
| | - J Daniel Tejero-Díez
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de Mexico, 54090 Tlalnepantla, Estado de Mexico, Mexico
| | - Klaus Mehltreter
- Red de Ecología Funcional, Instituto de Ecología A.C., 91070 Xalapa, Veracruz, Mexico
| | - John P Délano-Frier
- Department of Biotechnology and Biochemistry, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 36824 Irapuato, Guanajuato, Mexico
| | - Melvin J Oliver
- Division of Plant Sciences, Interdisciplinary Plant Group, University of Missouri, Columbia, MO 65211, USA
| | - June Simpson
- Department of Genetic Engineering, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, 36824 Irapuato, Guanajuato, Mexico
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8
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Nishii K, Hart M, Kelso N, Barber S, Chen Y, Thomson M, Trivedi U, Twyford AD, Möller M. The first genome for the Cape Primrose Streptocarpus rexii (Gesneriaceae), a model plant for studying meristem-driven shoot diversity. PLANT DIRECT 2022; 6:e388. [PMID: 35388373 PMCID: PMC8977575 DOI: 10.1002/pld3.388] [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: 10/11/2021] [Revised: 01/26/2022] [Accepted: 01/30/2022] [Indexed: 05/16/2023]
Abstract
Cape Primroses (Streptocarpus, Gesneriaceae) are an ideal study system for investigating the genetics underlying species diversity in angiosperms. Streptocarpus rexii has served as a model species for plant developmental research for over five decades due to its unusual extended meristem activity present in the leaves. In this study, we sequenced and assembled the complete nuclear, chloroplast, and mitochondrial genomes of S. rexii using Oxford Nanopore Technologies long read sequencing. Two flow cells of PromethION sequencing resulted in 32 billion reads and were sufficient to generate a draft assembly including the chloroplast, mitochondrial and nuclear genomes, spanning 776 Mbp. The final nuclear genome assembly contained 5,855 contigs, spanning 766 Mbp of the 929-Mbp haploid genome with an N50 of 3.7 Mbp and an L50 of 57 contigs. Over 70% of the draft genome was identified as repeats. A genome repeat library of Gesneriaceae was generated and used for genome annotation, with a total of 45,045 genes annotated in the S. rexii genome. Ks plots of the paranomes suggested a recent whole genome duplication event, shared between S. rexii and Primulina huaijiensis. A new chloroplast and mitochondrial genome assembly method, based on contig coverage and identification, was developed, and successfully used to assemble both organellar genomes of S. rexii. This method was developed into a pipeline and proved widely applicable. The nuclear genome of S. rexii and other datasets generated and reported here will be invaluable resources for further research to aid in the identification of genes involved in morphological variation underpinning plant diversification.
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Affiliation(s)
- Kanae Nishii
- Royal Botanic Garden EdinburghEdinburghUK
- Kanagawa UniversityHiratsukaJapan
| | | | | | | | - Yun‐Yu Chen
- Royal Botanic Garden EdinburghEdinburghUK
- Institute of Molecular Plant SciencesThe University of EdinburghEdinburghUK
| | - Marian Thomson
- Edinburgh Genomics, Ashworth LaboratoriesThe University of EdinburghEdinburghUK
| | - Urmi Trivedi
- Edinburgh Genomics, Ashworth LaboratoriesThe University of EdinburghEdinburghUK
| | - Alex D. Twyford
- Royal Botanic Garden EdinburghEdinburghUK
- Institute of Evolutionary Biology, Ashworth LaboratoriesThe University of EdinburghEdinburghUK
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9
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Liu X, Quan W, Bartels D. Stress memory responses and seed priming correlate with drought tolerance in plants: an overview. PLANTA 2022; 255:45. [PMID: 35066685 PMCID: PMC8784359 DOI: 10.1007/s00425-022-03828-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 01/08/2022] [Indexed: 05/08/2023]
Abstract
Environmental-friendly techniques based on plant stress memory, cross-stress tolerance, and seed priming help sustainable agriculture by mitigating negative effects of dehydration stress. The frequently uneven rainfall distribution caused by global warming will lead to more irregular and multiple abiotic stresses, such as heat stress, dehydration stress, cold stress or the combination of these stresses. Dehydration stress is one of the major environmental factors affecting the survival rate and productivity of plants. Hence, there is an urgent need to develop improved resilient varieties. Presently, technologies based on plant stress memory, cross-stress tolerance and priming of seeds represent fruitful and promising areas of future research and applied agricultural science. In this review, we will provide an overview of plant drought stress memory from physiological, biochemical, molecular and epigenetic perspectives. Drought priming-induced cross-stress tolerance to cold and heat stress will be discussed and the application of seed priming will be illustrated for different species.
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Affiliation(s)
- Xun Liu
- Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, Kirschallee 1, 53115, Bonn, Germany
- College of Bioengineering, Sichuan University of Science & Engineering, Zigong, 643000, China
| | - Wenli Quan
- Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, Kirschallee 1, 53115, Bonn, Germany
- Key Laboratory for Quality Control of Characteristic Fruits and Vegetables of Hubei Province, College of Life Science and Technology, Hubei Engineering University, Xiaogan, 432000, Hubei, China
| | - Dorothea Bartels
- Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, Kirschallee 1, 53115, Bonn, Germany.
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10
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Tebele SM, Marks RA, Farrant JM. Two Decades of Desiccation Biology: A Systematic Review of the Best Studied Angiosperm Resurrection Plants. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10122784. [PMID: 34961255 PMCID: PMC8706221 DOI: 10.3390/plants10122784] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/06/2021] [Accepted: 12/06/2021] [Indexed: 05/25/2023]
Abstract
Resurrection plants have an extraordinary ability to survive extreme water loss but still revive full metabolic activity when rehydrated. These plants are useful models to understand the complex biology of vegetative desiccation tolerance. Despite extensive studies of resurrection plants, many details underlying the mechanisms of desiccation tolerance remain unexplored. To summarize the progress in resurrection plant research and identify unexplored questions, we conducted a systematic review of 15 model angiosperm resurrection plants. This systematic review provides an overview of publication trends on resurrection plants, the geographical distribution of species and studies, and the methodology used. Using the Preferred Reporting Items for Systematic reviews and Meta-Analyses protocol we surveyed all publications on resurrection plants from 2000 and 2020. This yielded 185 empirical articles that matched our selection criteria. The most investigated plants were Craterostigma plantagineum (17.5%), Haberlea rhodopensis (13.7%), Xerophyta viscosa (reclassified as X. schlechteri) (11.9%), Myrothamnus flabellifolia (8.5%), and Boea hygrometrica (8.1%), with all other species accounting for less than 8% of publications. The majority of studies have been conducted in South Africa, Bulgaria, Germany, and China, but there are contributions from across the globe. Most studies were led by researchers working within the native range of the focal species, but some international and collaborative studies were also identified. The number of annual publications fluctuated, with a large but temporary increase in 2008. Many studies have employed physiological and transcriptomic methodologies to investigate the leaves of resurrection plants, but there was a paucity of studies on roots and only one metagenomic study was recovered. Based on these findings we suggest that future research focuses on resurrection plant roots and microbiome interactions to explore microbial communities associated with these plants, and their role in vegetative desiccation tolerance.
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Affiliation(s)
- Shandry M. Tebele
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch, Cape Town 7701, South Africa; (S.M.T.); (R.A.M.)
| | - Rose A. Marks
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch, Cape Town 7701, South Africa; (S.M.T.); (R.A.M.)
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Plant Resiliency Institute, Michigan State University, East Lansing, MI 48824, USA
| | - Jill M. Farrant
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch, Cape Town 7701, South Africa; (S.M.T.); (R.A.M.)
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11
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Pardo J, VanBuren R. Evolutionary innovations driving abiotic stress tolerance in C4 grasses and cereals. THE PLANT CELL 2021; 33:3391-3401. [PMID: 34387354 PMCID: PMC8566246 DOI: 10.1093/plcell/koab205] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 08/07/2021] [Indexed: 06/13/2023]
Abstract
Grasslands dominate the terrestrial landscape, and grasses have evolved complex and elegant strategies to overcome abiotic stresses. The C4 grasses are particularly stress tolerant and thrive in tropical and dry temperate ecosystems. Growing evidence suggests that the presence of C4 photosynthesis alone is insufficient to account for drought resilience in grasses, pointing to other adaptations as contributing to tolerance traits. The majority of grasses from the Chloridoideae subfamily are tolerant to drought, salt, and desiccation, making this subfamily a hub of resilience. Here, we discuss the evolutionary innovations that make C4 grasses so resilient, with a particular emphasis on grasses from the Chloridoideae (chloridoid) and Panicoideae (panicoid) subfamilies. We propose that a baseline level of resilience in chloridoid ancestors allowed them to colonize harsh habitats, and these environments drove selective pressure that enabled the repeated evolution of abiotic stress tolerance traits. Furthermore, we suggest that a lack of evolutionary access to stressful environments is partially responsible for the relatively poor stress resilience of major C4 crops compared to their wild relatives. We propose that chloridoid crops and the subfamily more broadly represent an untapped reservoir for improving resilience to drought and other abiotic stresses in cereals.
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Affiliation(s)
- Jeremy Pardo
- Department of Plant Biology, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Horticulture, Michigan State University, East Lansing, Michigan 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan 48824, USA
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, Michigan 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, Michigan 48824, USA
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DNA methylation-mediated modulation of rapid desiccation tolerance acquisition and dehydration stress memory in the resurrection plant Boea hygrometrica. PLoS Genet 2021; 17:e1009549. [PMID: 33930012 PMCID: PMC8115786 DOI: 10.1371/journal.pgen.1009549] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 05/12/2021] [Accepted: 04/14/2021] [Indexed: 12/02/2022] Open
Abstract
Pre-exposure of plants to various abiotic conditions confers improved tolerance to subsequent stress. Mild drought acclimation induces acquired rapid desiccation tolerance (RDT) in the resurrection plant Boea hygrometrica, but the mechanisms underlying the priming and memory processes remain unclear. In this study, we demonstrated that drought acclimation-induced RDT can be maintained for at least four weeks but was completely erased after 18 weeks based on a combination of the phenotypic and physiological parameters. Global transcriptome analysis identified several RDT-specific rapid dehydration-responsive genes related to cytokinin and phospholipid biosynthesis, nitrogen and carbon metabolism, and epidermal morphogenesis, most of which were pre-induced by drought acclimation. Comparison of whole-genome DNA methylation revealed dehydration stress-responsive hypomethylation in the CG, CHG, and CHH contexts and acclimation-induced hypermethylation in the CHH context of the B. hygrometrica genome, consistent with the transcriptional changes in methylation pathway genes. As expected, the global promoter and gene body methylation levels were negatively correlated with gene expression levels in both acclimated and dehydrated plants but showed no association with transcriptional divergence during the procedure. Nevertheless, the promoter methylation variations in the CG and CHG contexts were significantly associated with the differential expression of genes required for fundamental genetic processes of DNA conformation, RNA splicing, translation, and post-translational protein modification during acclimation, growth, and rapid dehydration stress response. It was also associated with the dehydration stress-induced upregulation of memory genes, including pre-mRNA-splicing factor 38A, vacuolar amino acid transporter 1-like, and UDP-sugar pyrophosphorylase, which may contribute directly or indirectly to the improvement of dehydration tolerance in B. hygrometrica plants. Altogether, our findings demonstrate the potential implications of DNA methylation in dehydration stress memory and, therefore, provide a molecular basis for enhanced dehydration tolerance in plants induced by drought acclimation. Drought is a major adverse environmental condition affecting plant growth and productivity. Although plants can be trained to improved tolerance to the subsequent drought stress, most land plants are unable to recover from severe dehydration when the relative water content in their vegetative tissues drops below 20–30%. However, a small group of angiosperms, termed resurrection plants, can survive extreme water deficiency of their vegetative tissues to an air-dried state and recovered upon rehydration. Understanding the biochemical and molecular basis of desiccation tolerance is valuable for extending our knowledge of the maximum ability of plants to deal with extreme water loss. Boea hygrometrica is a well-characterized resurrection plant that can not only tolerate slow dehydration but also extend its ability to survive rapid dehydration after a priming process of slow dehydration and rehydration. The rapid desiccation tolerance in primed plants can be maintained for at least four weeks. Here, we utilized this system of drought acclimation-induced RDT acquisition, maintenance, and erasing to explore plant phenotypic, physiological, and transcriptional changes, as well as DNA methylation dynamics. The analyses of the effect of DNA methylation on gene expression and promoter methylation changes with differential gene expression revealed the putative epigenetic control of dehydration stress memory in plants.
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Neeragunda Shivaraj Y, Plancot B, Ramdani Y, Gügi B, Kambalagere Y, Jogaiah S, Driouich A, Ramasandra Govind S. Physiological and biochemical responses involved in vegetative desiccation tolerance of resurrection plant Selaginella brachystachya. 3 Biotech 2021; 11:135. [PMID: 33680700 PMCID: PMC7897589 DOI: 10.1007/s13205-021-02667-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 01/27/2021] [Indexed: 12/30/2022] Open
Abstract
The vegetative desiccation tolerance of Selaginella brachystachya has been evaluated for its ability to revive from a desiccation (air dry) state and start normal functioning when rehydrated. In this study, S. brachystachya was identified by DNA barcoding. Experiments were conducted using the detached hydrated, desiccated and rehydrated fronds under laboratory conditions to understand the mechanism of revival upon the water availability. Scanning Electron Microscope images during desiccation showed closed stomata and inside curled leaves. Chlorophyll concentration decreased by 1.1 fold in desiccated state and recovered completely upon rehydration. However, the total carotenoid content decreased 4.5 fold while the anthocyanin concentration increased 5.98 fold and the CO2 exchange rate became negative during desiccation. Lipid peroxidation and superoxide radical production were enhanced during desiccation by 68.32 and 73.4%, respectively. Relative electrolyte leakage was found to be minimal during desiccation. Activities of antioxidant enzymes, namely peroxidase (158.33%), glutathione reductase (107.70%), catalase (92.95%) and superoxide dismutase (184.70%) were found to be higher in the desiccated state. The proline concentration increased by 1.4 fold, starch concentration decreased 3.9 fold and sucrose content increased 2.8 fold during desiccation. Upon rehydration, S. brachystachya recovered its original morphology, physiological and biochemical functions. Our results demonstrate that S. brachystachya minimizes desiccation stress through a range of morphological, physiological and biochemical mechanisms. These results provide useful insights into desiccation tolerance mechanisms for potential utilization in enhancing stress tolerance in crop plants. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-021-02667-1.
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Affiliation(s)
- Yathisha Neeragunda Shivaraj
- Department of Studies and Research in Environmental Science, Kuvempu University, Shankaraghatta, Shimoga 577451 India
- Department of Studies and Research in Biotechnology and Microbiology, Tumkur University, Tumakuru, 57210 India
| | - Barbara Plancot
- Laboratoire de Glycobiologie Et Matrice Extracellulaire Végétale, Université de Rouen, 76000 Rouen, Normandie France
- Fédération de Recherche “Normandie-Végétal”-FED 4277, 76000 Rouen, France
| | - Yasmina Ramdani
- Laboratoire de Glycobiologie Et Matrice Extracellulaire Végétale, Université de Rouen, 76000 Rouen, Normandie France
- Fédération de Recherche “Normandie-Végétal”-FED 4277, 76000 Rouen, France
| | - Bruno Gügi
- Laboratoire de Glycobiologie Et Matrice Extracellulaire Végétale, Université de Rouen, 76000 Rouen, Normandie France
- Fédération de Recherche “Normandie-Végétal”-FED 4277, 76000 Rouen, France
| | - Yogendra Kambalagere
- Department of Studies and Research in Environmental Science, Kuvempu University, Shankaraghatta, Shimoga 577451 India
| | - Sudisha Jogaiah
- Department of Studies and Research in Biotechnology and Microbiology, Karnataka University, Dharwad, India
| | - Azeddine Driouich
- Laboratoire de Glycobiologie Et Matrice Extracellulaire Végétale, Université de Rouen, 76000 Rouen, Normandie France
- Fédération de Recherche “Normandie-Végétal”-FED 4277, 76000 Rouen, France
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Alejo-Jacuinde G, González-Morales SI, Oropeza-Aburto A, Simpson J, Herrera-Estrella L. Comparative transcriptome analysis suggests convergent evolution of desiccation tolerance in Selaginella species. BMC PLANT BIOLOGY 2020; 20:468. [PMID: 33046015 PMCID: PMC7549206 DOI: 10.1186/s12870-020-02638-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 09/04/2020] [Indexed: 05/04/2023]
Abstract
BACKGROUND Desiccation tolerant Selaginella species evolved to survive extreme environmental conditions. Studies to determine the mechanisms involved in the acquisition of desiccation tolerance (DT) have focused on only a few Selaginella species. Due to the large diversity in morphology and the wide range of responses to desiccation within the genus, the understanding of the molecular basis of DT in Selaginella species is still limited. RESULTS Here we present a reference transcriptome for the desiccation tolerant species S. sellowii and the desiccation sensitive species S. denticulata. The analysis also included transcriptome data for the well-studied S. lepidophylla (desiccation tolerant), in order to identify DT mechanisms that are independent of morphological adaptations. We used a comparative approach to discriminate between DT responses and the common water loss response in Selaginella species. Predicted proteomes show strong homology, but most of the desiccation responsive genes differ between species. Despite such differences, functional analysis revealed that tolerant species with different morphologies employ similar mechanisms to survive desiccation. Significant functions involved in DT and shared by both tolerant species included induction of antioxidant systems, amino acid and secondary metabolism, whereas species-specific responses included cell wall modification and carbohydrate metabolism. CONCLUSIONS Reference transcriptomes generated in this work represent a valuable resource to study Selaginella biology and plant evolution in relation to DT. Our results provide evidence of convergent evolution of S. sellowii and S. lepidophylla due to the different gene sets that underwent selection to acquire DT.
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Affiliation(s)
- Gerardo Alejo-Jacuinde
- National Laboratory of Genomics for Biodiversity (Langebio), Unit of Advanced Genomics, CINVESTAV, 36824 Irapuato, Guanajuato Mexico
- Department of Genetic Engineering, CINVESTAV, 36824 Irapuato, Guanajuato Mexico
| | | | - Araceli Oropeza-Aburto
- National Laboratory of Genomics for Biodiversity (Langebio), Unit of Advanced Genomics, CINVESTAV, 36824 Irapuato, Guanajuato Mexico
| | - June Simpson
- Department of Genetic Engineering, CINVESTAV, 36824 Irapuato, Guanajuato Mexico
| | - Luis Herrera-Estrella
- National Laboratory of Genomics for Biodiversity (Langebio), Unit of Advanced Genomics, CINVESTAV, 36824 Irapuato, Guanajuato Mexico
- Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX 79409 USA
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15
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Pardo J, Man Wai C, Chay H, Madden CF, Hilhorst HWM, Farrant JM, VanBuren R. Intertwined signatures of desiccation and drought tolerance in grasses. Proc Natl Acad Sci U S A 2020; 117:10079-10088. [PMID: 32327609 PMCID: PMC7211927 DOI: 10.1073/pnas.2001928117] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Grasses are among the most resilient plants, and some can survive prolonged desiccation in semiarid regions with seasonal rainfall. However, the genetic elements that distinguish grasses that are sensitive versus tolerant to extreme drying are largely unknown. Here, we leveraged comparative genomic approaches with the desiccation-tolerant grass Eragrostis nindensis and the related desiccation-sensitive cereal Eragrostis tef to identify changes underlying desiccation tolerance. These analyses were extended across C4 grasses and cereals to identify broader evolutionary conservation and divergence. Across diverse genomic datasets, we identified changes in chromatin architecture, methylation, gene duplications, and expression dynamics related to desiccation in E. nindensis It was previously hypothesized that transcriptional rewiring of seed desiccation pathways confers vegetative desiccation tolerance. Here, we demonstrate that the majority of seed-dehydration-related genes showed similar expression patterns in leaves of both desiccation-tolerant and -sensitive species. However, we identified a small set of seed-related orthologs with expression specific to desiccation-tolerant species. This supports a broad role for seed-related genes, where many are involved in typical drought responses, with only a small subset of crucial genes specifically induced in desiccation-tolerant plants.
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Affiliation(s)
- Jeremy Pardo
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824
- Department of Horticulture, Michigan State University, East Lansing, MI 48824
- Plant Resilience Institute, Michigan State University, East Lansing, MI 48824
| | - Ching Man Wai
- Department of Horticulture, Michigan State University, East Lansing, MI 48824
- Plant Resilience Institute, Michigan State University, East Lansing, MI 48824
| | - Hannah Chay
- Department of Horticulture, Michigan State University, East Lansing, MI 48824
| | - Christine F Madden
- Department of Molecular and Cell Biology, University of Cape Town, 7701 Cape Town, South Africa
| | - Henk W M Hilhorst
- Laboratory of Plant Physiology, Wageningen University, 6708PB Wageningen, The Netherlands
| | - Jill M Farrant
- Department of Molecular and Cell Biology, University of Cape Town, 7701 Cape Town, South Africa
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, MI 48824;
- Plant Resilience Institute, Michigan State University, East Lansing, MI 48824
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Fernández-Marín B, Nadal M, Gago J, Fernie AR, López-Pozo M, Artetxe U, García-Plazaola JI, Verhoeven A. Born to revive: molecular and physiological mechanisms of double tolerance in a paleotropical and resurrection plant. THE NEW PHYTOLOGIST 2020; 226:741-759. [PMID: 32017123 DOI: 10.1111/nph.16464] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 01/20/2020] [Indexed: 05/24/2023]
Abstract
Resurrection plants recover physiological functions after complete desiccation. Almost all of them are native to tropical warm environments. However, the Gesneriaceae include four genera, remnant of the past palaeotropical flora, which inhabit temperate mountains. One of these species is additionally freezing-tolerant: Ramonda myconi. We hypothesise that this species has been able to persist in a colder climate thanks to some resurrection-linked traits. To disentangle the physiological mechanisms underpinning multistress tolerance to desiccation and freezing, we conducted an exhaustive seasonal assessment of photosynthesis (gas exchange, limitations to partitioning, photochemistry and galactolipids) and primary metabolism (through metabolomics) in two natural populations at different elevations. R. myconi displayed low rates of photosynthesis, largely due to mesophyll limitation. However, plants were photosynthetically active throughout the year, excluding a reversible desiccation period. Common responses to desiccation and low temperature involved chloroplast protection: enhanced thermal energy dissipation, higher carotenoid to Chl ratio and de-epoxidation of the xanthophyll cycle. As specific responses, antioxidants and secondary metabolic routes rose upon desiccation, while putrescine, proline and a variety of sugars rose in winter. The data suggest conserved mechanisms to cope with photo-oxidation during desiccation and cold events, while additional metabolic mechanisms may have evolved as specific adaptations to cold during recent glaciations.
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Affiliation(s)
- Beatriz Fernández-Marín
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa, 48940, Spain
- Department of Botany, Ecology and Plant Physiology, University of La Laguna (ULL), Tenerife, 38200, Spain
| | - Miquel Nadal
- Research Group on Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears (UIB), Instituto de Agroecología y Economía del Agua (INAGEA), ctra. Valldemossa km 7.5, Palma de Mallorca, 07122, Spain
| | - Jorge Gago
- Research Group on Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears (UIB), Instituto de Agroecología y Economía del Agua (INAGEA), ctra. Valldemossa km 7.5, Palma de Mallorca, 07122, Spain
| | - Alisdair R Fernie
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, 14476, Germany
| | - Marina López-Pozo
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa, 48940, Spain
| | - Unai Artetxe
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa, 48940, Spain
| | - José Ignacio García-Plazaola
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa, 48940, Spain
| | - Amy Verhoeven
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa, 48940, Spain
- Biology Department (OWS352), University of St Thomas, 2115 Summit Ave., St Paul, MN, USA
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Lin CT, Xu T, Xing SL, Zhao L, Sun RZ, Liu Y, Moore JP, Deng X. Weighted Gene Co-expression Network Analysis (WGCNA) Reveals the Hub Role of Protein Ubiquitination in the Acquisition of Desiccation Tolerance in Boea hygrometrica. PLANT & CELL PHYSIOLOGY 2019; 60:2707-2719. [PMID: 31410481 DOI: 10.1093/pcp/pcz160] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Accepted: 08/06/2019] [Indexed: 05/28/2023]
Abstract
Boea hygrometrica can survive extreme drought conditions and has been used as a model to study desiccation tolerance. A genome-wide transcriptome analysis of B. hygrometrica showed that the plant can survive rapid air-drying after experiencing a slow soil-drying acclimation phase. In addition, a weighted gene co-expression network analysis was used to study the transcriptomic datasets. A network comprising 22 modules was constructed, and seven modules were found to be significantly related to desiccation response using an enrichment analysis. Protein ubiquitination was observed to be a common process linked to hub genes in all the seven modules. Ubiquitin-modified proteins with diversified functions were identified using immunoprecipitation coupled with mass spectrometry. The lowest level of ubiquitination was noted at the full soil drying priming stage, which coincided the accumulation of dehydration-responsive gene BhLEA2. The highly conserved RY motif (CATGCA) was identified from the promoters of ubiquitin-related genes that were downregulated in the desiccated samples. An in silico gene expression analysis showed that the negative regulation of ubiquitin-related genes is potentially mediated via a B3 domain-containing transcription repressor VAL1. This study suggests that priming may involve the transcriptional regulation of several major processes, and the transcriptional regulation of genes in protein ubiquitination may play a hub role to deliver acclimation signals to posttranslational level in the acquisition of desiccation tolerance in B. hygrometrica.
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Affiliation(s)
- Chih-Ta Lin
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Tao Xu
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Shi-Lai Xing
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Li Zhao
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Run-Ze Sun
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Yang Liu
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - John Paul Moore
- Department of Viticulture and Oenology, Institute for Wine Biotechnology, Stellenbosch University, Matieland 7602, South Africa
| | - Xin Deng
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
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Liu J, Moyankova D, Djilianov D, Deng X. Common and Specific Mechanisms of Desiccation Tolerance in Two Gesneriaceae Resurrection Plants. Multiomics Evidences. FRONTIERS IN PLANT SCIENCE 2019; 10:1067. [PMID: 31552070 PMCID: PMC6737074 DOI: 10.3389/fpls.2019.01067] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 08/07/2019] [Indexed: 05/06/2023]
Abstract
Environmental stress, especially water deficiency, seriously limits plant distribution and crop production worldwide. A small group of vascular angiosperm plants termed "resurrection plants," possess desiccation tolerance (DT) to withstand dehydration and to recover fully upon rehydration. In recent years, with the rapid development of life science in plants different omics technologies have been widely applied in resurrection plants to study DT. Boea hygrometrica is native in East and Southeast Asia, and Haberlea rhodopensis is endemic to the Balkans in Europe. They are both resurrection pants from Gesneriaceae family. This paper reviews recent advances in transcriptome and metabolome, and discusses the differences and similarities of DT features between both species. Finally, we believe we provide novel insights into understanding the mechanisms underlying the acquisition and evolution of desiccation tolerance of the resurrection plants that could substantially contribute to develop new approaches for agriculture to overcome water deficiency in future.
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Affiliation(s)
- Jie Liu
- Facility Horticulture Laboratory of Universities in Shandong, Weifang University of Science and Technology, Shouguang, China
- Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Beijing, China
| | - Daniela Moyankova
- Abiotic Stress Group, Agrobioinstitute, Agricultural Academy, Sofia, Bulgaria
| | - Dimitar Djilianov
- Abiotic Stress Group, Agrobioinstitute, Agricultural Academy, Sofia, Bulgaria
| | - Xin Deng
- Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Beijing, China
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Sun RZ, Zuo EH, Qi JF, Liu Y, Lin CT, Deng X. A role of age-dependent DNA methylation reprogramming in regulating the regeneration capacity of Boea hygrometrica leaves. Funct Integr Genomics 2019; 20:133-149. [PMID: 31414312 DOI: 10.1007/s10142-019-00701-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 06/09/2019] [Accepted: 07/15/2019] [Indexed: 11/30/2022]
Abstract
Plants can regenerate new individuals under appropriate culture conditions. Although the molecular basis of shoot regeneration has steadily been unraveled, the role of age-dependent DNA methylation status in the regulation of explant regeneration remains practically unknown. Here, we established an effective auxin/cytokinin-induced shoot regeneration system for the resurrection plant Boea hygrometrica via direct organogenesis and observed that regeneration was postponed with increasing age of donor plants. Global transcriptome analysis revealed significant upregulation of genes required for hormone signaling and phenylpropanoid biosynthesis and downregulation of photosynthetic genes during regeneration. Transcriptional changes in the positive/negative regulators and cell wall-related proteins involved in plant regeneration, such as ELONGATED HYPOCOTYL5 (HY5), LATERAL ORGAN BOUNDARIES DOMAIN, SHOOT-MERISTEMLESS, and WUSCHEL, were associated with the regeneration process. Comparison of DNA methylation profiling between leaves from young seedlings (YL) and mature plants (ML) revealed increased asymmetrical methylation in ML, which was predominantly distributed in promoter regions of genes, such as HY5 and a member of ABA-responsive element (ABRE) binding protein/ABRE binding factor, as well as genes encoding glycine-rich cell wall structural protein, CENTRORADIALIS-like protein, and beta-glucosidase 40-like essential for shoot meristem and cell wall architecture. Their opposite transcription response in ML explants during regeneration compared with those from YL demonstrated the putative involvement of DNA methylation in regeneration. Moreover, a significant lower expression of DNA glycosylase-lyase required for DNA demethylation in ML was coincident with its postponed regeneration compared with those in YL. Taken together, our results suggest a role of promoter demethylation in B. hygrometrica regeneration.
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Affiliation(s)
- Run-Ze Sun
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - En-Hui Zuo
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Jin-Feng Qi
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Yang Liu
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Chih-Ta Lin
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Xin Deng
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
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Zhang H, Li Y, Zhu JK. Developing naturally stress-resistant crops for a sustainable agriculture. NATURE PLANTS 2018; 4:989-996. [PMID: 30478360 DOI: 10.1038/s41477-018-0309-4] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 10/17/2018] [Indexed: 05/19/2023]
Abstract
A major problem facing humanity is that our numbers are growing but the availability of land and fresh water for agriculture is not. This problem is being exacerbated by climate change-induced increases in drought, and other abiotic stresses. Stress-resistant crops are needed to ensure yield stability under stress conditions and to minimize the environmental impacts of crop production. Evolution has created thousands of species of naturally stress-resistant plants (NSRPs), some of which have already been subjected to human domestication and are considered minor crops. Broader cultivation of these minor crops will diversify plant agriculture and the human diet, and will therefore help improve global food security and human health. More research should be directed toward understanding and utilizing NSRPs. Technologies are now available that will enable researchers to rapidly improve the genetics of NSRPs, with the goal of increasing NSRP productivity while retaining NSRP stress resistance and nutritional value.
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Affiliation(s)
- Heng Zhang
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China.
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China.
| | - Yuanyuan Li
- Key Laboratory of Plant Stress Research, Shandong Normal University, Jinan, Shandong, China
| | - Jian-Kang Zhu
- Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, China.
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN, USA.
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21
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Neeragunda Shivaraj Y, Barbara P, Gugi B, Vicré-Gibouin M, Driouich A, Ramasandra Govind S, Devaraja A, Kambalagere Y. Perspectives on Structural, Physiological, Cellular, and Molecular Responses to Desiccation in Resurrection Plants. SCIENTIFICA 2018; 2018:9464592. [PMID: 30046509 PMCID: PMC6036803 DOI: 10.1155/2018/9464592] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 03/07/2018] [Accepted: 04/26/2018] [Indexed: 05/21/2023]
Abstract
Resurrection plants possess a unique ability to counteract desiccation stress. Desiccation tolerance (DT) is a very complex multigenic and multifactorial process comprising a combination of physiological, morphological, cellular, genomic, transcriptomic, proteomic, and metabolic processes. Modification in the sugar composition of the hemicellulosic fraction of the cell wall is detected during dehydration. An important change is a decrease of glucose in the hemicellulosic fraction during dehydration that can reflect a modification of the xyloglucan structure. The expansins might also be involved in cell wall flexibility during drying and disrupt hydrogen bonds between polymers during rehydration of the cell wall. Cleavages by xyloglucan-modifying enzymes release the tightly bound xyloglucan-cellulose network, thus increasing cell wall flexibility required for cell wall folding upon desiccation. Changes in hydroxyproline-rich glycoproteins (HRGPs) such as arabinogalactan proteins (AGPs) are also observed during desiccation and rehydration processes. It has also been observed that significant alterations in the process of photosynthesis and photosystem (PS) II activity along with changes in the antioxidant enzyme system also increased the cell wall and membrane fluidity resulting in DT. Similarly, recent data show a major role of ABA, LEA proteins, and small regulatory RNA in regulating DT responses. Current progress in "-omic" technologies has enabled quantitative monitoring of the plethora of biological molecules in a high throughput routine, making it possible to compare their levels between desiccation-sensitive and DT species. In this review, we present a comprehensive overview of structural, physiological, cellular, molecular, and global responses involved in desiccation tolerance.
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Affiliation(s)
- Yathisha Neeragunda Shivaraj
- Centre for Bioinformation, Department of Studies and Research in Environmental Science, Tumkur University, Tumakuru 57210, India
| | - Plancot Barbara
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, Normandie Univ, UniRouen, 76000 Rouen, France
- Fédération de Recherche “Normandie-Végétal”-FED 4277, 76000 Rouen, France
| | - Bruno Gugi
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, Normandie Univ, UniRouen, 76000 Rouen, France
- Fédération de Recherche “Normandie-Végétal”-FED 4277, 76000 Rouen, France
| | - Maïté Vicré-Gibouin
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, Normandie Univ, UniRouen, 76000 Rouen, France
- Fédération de Recherche “Normandie-Végétal”-FED 4277, 76000 Rouen, France
| | - Azeddine Driouich
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, Normandie Univ, UniRouen, 76000 Rouen, France
- Fédération de Recherche “Normandie-Végétal”-FED 4277, 76000 Rouen, France
| | - Sharatchandra Ramasandra Govind
- Centre for Bioinformation, Department of Studies and Research in Environmental Science, Tumkur University, Tumakuru 57210, India
| | - Akash Devaraja
- Centre for Bioinformation, Department of Studies and Research in Environmental Science, Tumkur University, Tumakuru 57210, India
| | - Yogendra Kambalagere
- Department of Studies and Research in Environmental Science, Kuvempu University, Shankaraghatta, Shimoga 577451, India
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22
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Zhang Q, Bartels D. Molecular responses to dehydration and desiccation in desiccation-tolerant angiosperm plants. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:3211-3222. [PMID: 29385548 DOI: 10.1093/jxb/erx489] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 12/20/2017] [Indexed: 05/21/2023]
Abstract
Due to the ability to tolerate extreme dehydration, desiccation-tolerant plants have been widely investigated to find potential approaches for improving water use efficiency or developing new crop varieties. The studies of desiccation-tolerant plants have identified sugar accumulation, specific protein synthesis, cell structure changes, and increased anti-oxidative reactions as part of the mechanisms of desiccation tolerance. However, plants respond differently according to the severity of water loss, and the process of water loss affects desiccation tolerance. A detailed analysis within the dehydration process is important for understanding the process of desiccation tolerance. This review defines dehydration and desiccation, finds the boundary for the relative water content between dehydration and desiccation, compares the molecular responses to dehydration and desiccation, compares signaling differences between dehydration and desiccation, and finally summarizes the strategies launched in desiccation-tolerant plants for dehydration and desiccation, respectively. The roles of abscisic acid (ABA) and reactive oxygen species (ROS) in sensing and signaling during dehydration are discussed. We outline how this knowledge can be exploited to generate drought-tolerant crop plants.
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Affiliation(s)
- Qingwei Zhang
- Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, Germany
| | - Dorothea Bartels
- Institute of Molecular Physiology and Biotechnology of Plants (IMBIO), University of Bonn, Germany
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23
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Tshabuse F, Farrant JM, Humbert L, Moura D, Rainteau D, Espinasse C, Idrissi A, Merlier F, Acket S, Rafudeen MS, Thomasset B, Ruelland E. Glycerolipid analysis during desiccation and recovery of the resurrection plant Xerophyta humilis (Bak) Dur and Schinz. PLANT, CELL & ENVIRONMENT 2018; 41:533-547. [PMID: 28865108 DOI: 10.1111/pce.13063] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 08/21/2017] [Accepted: 08/22/2017] [Indexed: 06/07/2023]
Abstract
Xerophyta humilis is a poikilochlorophyllous monocot resurrection plant used as a model to study vegetative desiccation tolerance. Dehydration imposes tension and ultimate loss of integrity of membranes in desiccation sensitive species. We investigated the predominant molecular species of glycerolipids present in root and leaf tissues, using multiple reaction monitoring mass spectrometry, and then analysed changes therein during dehydration and subsequent rehydration of whole plants. The presence of fatty acids with long carbon chains and with odd numbers of carbons were detected and confirmed by gas chromatography. Dehydration of both leaves and roots resulted in an increase in species containing polyunsaturated fatty acids and a decrease in disaturated species. Upon rehydration, lipid saturation was reversed, with this being initiated immediately upon watering in roots but only 12-24 hr later in leaves. Relative levels of species with short-chained odd-numbered saturated fatty acids decreased during dehydration and increased during rehydration, whereas the reverse trend was observed for long-chained fatty acids. X. humilis has a unique lipid composition, this report being one of the few to demonstrate the presence of odd-numbered fatty acids in plant phosphoglycerolipids.
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Affiliation(s)
- Freedom Tshabuse
- Department of Molecular and Cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa
| | - Jill M Farrant
- Department of Molecular and Cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa
| | - Lydie Humbert
- Laboratoire des BioMolécules, CNRS UMR7203, Université Pierre et Marie Curie-Faculté de Médecine-Saint Antoine, 184 rue du Faubourg Saint-Antoine, 75571, Paris Cedex 12, France
| | - Deborah Moura
- Université Paris-Est, UPEC, Institut d'Ecologie et des Sciences Environnementales de Paris, 94010, Créteil Cedex, France
| | - Dominique Rainteau
- Laboratoire des BioMolécules, CNRS UMR7203, Université Pierre et Marie Curie-Faculté de Médecine-Saint Antoine, 184 rue du Faubourg Saint-Antoine, 75571, Paris Cedex 12, France
| | - Christophe Espinasse
- Université Paris-Est, UPEC, Institut d'Ecologie et des Sciences Environnementales de Paris, 94010, Créteil Cedex, France
| | - Abdelghani Idrissi
- Sorbonne Universités, Université Technologique de Compiegne (UTC), Génie Enzymatique et Cellulaire (GEC), FRE-CNRS 3580, CS 60319, 60203, Compiègne Cedex, France
| | - Franck Merlier
- Sorbonne Universités, Université Technologique de Compiegne (UTC), Génie Enzymatique et Cellulaire (GEC), FRE-CNRS 3580, CS 60319, 60203, Compiègne Cedex, France
| | - Sébastien Acket
- Sorbonne Universités, Université Technologique de Compiegne (UTC), Génie Enzymatique et Cellulaire (GEC), FRE-CNRS 3580, CS 60319, 60203, Compiègne Cedex, France
| | - Mohamad S Rafudeen
- Department of Molecular and Cell Biology, University of Cape Town, Private Bag X3, Rondebosch, 7701, South Africa
| | - Brigitte Thomasset
- Sorbonne Universités, Université Technologique de Compiegne (UTC), Génie Enzymatique et Cellulaire (GEC), FRE-CNRS 3580, CS 60319, 60203, Compiègne Cedex, France
| | - Eric Ruelland
- Université Paris-Est, UPEC, Institut d'Ecologie et des Sciences Environnementales de Paris, 94010, Créteil Cedex, France
- CNRS, Institut d'Ecologie et des Sciences Environnementales de Paris, UMR7618, 94010, Créteil cedex, France
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24
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Blum A, Tuberosa R. Dehydration survival of crop plants and its measurement. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:975-981. [PMID: 29325054 PMCID: PMC6018961 DOI: 10.1093/jxb/erx445] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 12/08/2017] [Indexed: 05/07/2023]
Abstract
Dehydration survival under drought stress is defined in this review as the transition from plant activity into a quiescent state of life preservation, which will be terminated by either recovery or death, depending on the stress regime and the plant's resilience. Dehydration survival is a popular phenotype by which functional genomics attempts to test gene function in drought resistance and survival. The available reports on phenotyping and genotyping of dehydration survival in genomic studies indicate that the measurement of this trait is often biased to the extent that misguided interpretations are likely to occur. This review briefly discusses the physiological basis of dehydration survival in resurrection plants and crop plants, and concludes that in phenotyping dehydration survival there is a need to distinguish between dehydration avoidance and dehydration tolerance (also termed desiccation tolerance) in affecting survival and recovery. Without this distinction, functional genomics studies of the trait might be biased. Survival due to dehydration avoidance is expressed by the capacity to maintain a relatively high plant water status as the plant is desiccated. Survival due to dehydration tolerance is expressed by delayed mortality (mortality at a relatively low plant water status) as affected by the resilience of plant metabolism. The common test of dehydration survival, using the relative recovery after a given number of stress days, is therefore insufficient because it is mainly driven by dehydration avoidance and so ignores a possible role for dehydration tolerance. Conceivable methods for more accurate phenotyping of the two components of dehydration survival are proposed and discussed.
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Affiliation(s)
| | - Roberto Tuberosa
- Department of Agricultural Sciences, University of Bologna, Viale Fanin, Bologna, Italy
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25
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Kampowski T, Mylo MD, Poppinga S, Speck T. How water availability influences morphological and biomechanical properties in the one-leaf plant Monophyllaea horsfieldii. ROYAL SOCIETY OPEN SCIENCE 2018; 5:171076. [PMID: 29410820 PMCID: PMC5792897 DOI: 10.1098/rsos.171076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/24/2017] [Indexed: 06/08/2023]
Abstract
In its natural habitat, the one-leaf plant Monophyllaea horsfieldii (Gesneriaceae) shows striking postural changes and dramatic loss of stability in response to intermittently occurring droughts. As the morphological, anatomical and biomechanical bases of these alterations are as yet unclear, we examined the influence of varying water contents on M. horsfieldii by conducting dehydration-rehydration experiments together with various imaging techniques as well as quantitative bending and turgor pressure measurements. As long as only moderate water stress was applied, gradual reductions in hypocotyl diameters and structural bending moduli during dehydration were almost always rapidly recovered in acropetal direction upon rehydration. On an anatomical scale, M. horsfieldii hypocotyls revealed substantial water stress-induced alterations in parenchymatous tissues, whereas the cell form and structure of epidermal and vascular tissues hardly changed. In summary, the functional morphology and biomechanics of M. horsfieldii hypocotyls directly correlated with water status alterations and associated physiological parameters (i.e. turgor pressure). Moreover, M. horsfieldii showed only little passive structural-functional adaptations to dehydration in comparison with poikilohydrous Ramonda myconi.
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Affiliation(s)
- Tim Kampowski
- Plant Biomechanics Group Freiburg, Botanic Garden, University of Freiburg, Freiburg im Breisgau, Germany
- Freiburg Materials Research Center, University of Freiburg, Freiburg im Breisgau, Germany
| | - Max David Mylo
- Plant Biomechanics Group Freiburg, Botanic Garden, University of Freiburg, Freiburg im Breisgau, Germany
| | - Simon Poppinga
- Plant Biomechanics Group Freiburg, Botanic Garden, University of Freiburg, Freiburg im Breisgau, Germany
- Freiburg Materials Research Center, University of Freiburg, Freiburg im Breisgau, Germany
| | - Thomas Speck
- Plant Biomechanics Group Freiburg, Botanic Garden, University of Freiburg, Freiburg im Breisgau, Germany
- Freiburg Materials Research Center, University of Freiburg, Freiburg im Breisgau, Germany
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26
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Rippin M, Becker B, Holzinger A. Enhanced Desiccation Tolerance in Mature Cultures of the Streptophytic Green Alga Zygnema circumcarinatum Revealed by Transcriptomics. PLANT & CELL PHYSIOLOGY 2017; 58:2067-2084. [PMID: 29036673 PMCID: PMC5722205 DOI: 10.1093/pcp/pcx136] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/05/2017] [Indexed: 05/20/2023]
Abstract
Desiccation tolerance is commonly regarded as one of the key features for the colonization of terrestrial habitats by green algae and the evolution of land plants. Extensive studies, focused mostly on physiology, have been carried out assessing the desiccation tolerance and resilience of the streptophytic genera Klebsormidium and Zygnema. Here we present transcriptomic analyses of Zygnema circumcarinatum exposed to desiccation stress. Cultures of Z. circumcarinatum grown in liquid medium or on agar plates were desiccated at ∼86% relative air humidity until the effective quantum yield of PSII [Y(II)] ceased. In general, the response to dehydration was much more pronounced in Z. circumcarinatum cultured in liquid medium for 1 month compared with filaments grown on agar plates for 7 and 12 months. Culture on solid medium enables the alga to acclimate to dehydration much better and an increase in desiccation tolerance was clearly correlated to increased culture age. Moreover, gene expression analysis revealed that photosynthesis was strongly repressed upon desiccation treatment in the liquid culture while only minor effects were detected in filaments cultured on agar plates for 7 months. Otherwise, both samples showed induction of stress protection mechanisms such as reactive oxygen species scavenging (early light-induced proteins, glutathione metabolism) and DNA repair as well as the expression of chaperones and aquaporins. Additionally, Z. circumcarinatum cultured in liquid medium upregulated sucrose-synthesizing enzymes and strongly induced membrane modifications in response to desiccation stress. These results corroborate the previously described hardening and associated desiccation tolerance in Zygnema in response to seasonal fluctuations in water availability.
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Affiliation(s)
- Martin Rippin
- University of Cologne, Cologne Biocentre, Botanical Institute, Zülpicher Str. 47b, 50674, Cologne, Germany
| | - Burkhard Becker
- University of Cologne, Cologne Biocentre, Botanical Institute, Zülpicher Str. 47b, 50674, Cologne, Germany
| | - Andreas Holzinger
- University of Innsbruck, Department of Botany, Functional Plant Biology, Sternwartestrasse 15, 6020 Innsbruck, Austria
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27
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Costa MCD, Cooper K, Hilhorst HWM, Farrant JM. Orthodox Seeds and Resurrection Plants: Two of a Kind? PLANT PHYSIOLOGY 2017; 175:589-599. [PMID: 28851758 PMCID: PMC5619911 DOI: 10.1104/pp.17.00760] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 08/22/2017] [Indexed: 05/27/2023]
Abstract
Understanding shared strategies for desiccation tolerance in orthodox seeds and resurrection plants can yield insights for agricultural improvement.
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Affiliation(s)
- Maria-Cecília D Costa
- Department of Molecular and Cell Biology, University of Cape Town, 7701 Cape Town, South Africa
| | - Keren Cooper
- Department of Molecular and Cell Biology, University of Cape Town, 7701 Cape Town, South Africa
| | - Henk W M Hilhorst
- Laboratory of Plant Physiology, Wageningen University, 6708PB Wageningen, The Netherlands
| | - Jill M Farrant
- Department of Molecular and Cell Biology, University of Cape Town, 7701 Cape Town, South Africa
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28
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Guadagno CR, Ewers BE, Speckman HN, Aston TL, Huhn BJ, DeVore SB, Ladwig JT, Strawn RN, Weinig C. Dead or Alive? Using Membrane Failure and Chlorophyll a Fluorescence to Predict Plant Mortality from Drought. PLANT PHYSIOLOGY 2017; 175:223-234. [PMID: 28710130 PMCID: PMC5580738 DOI: 10.1104/pp.16.00581] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 07/11/2017] [Indexed: 05/02/2023]
Abstract
Climate models predict widespread increases in both drought intensity and duration in the next decades. Although water deficiency is a significant determinant of plant survival, limited understanding of plant responses to extreme drought impedes forecasts of both forest and crop productivity under increasing aridity. Drought induces a suite of physiological responses; however, we lack an accurate mechanistic description of plant response to lethal drought that would improve predictive understanding of mortality under altered climate conditions. Here, proxies for leaf cellular damage, chlorophyll a fluorescence, and electrolyte leakage were directly associated with failure to recover from drought upon rewatering in Brassicarapa (genotype R500) and thus define the exact timing of drought-induced death. We validated our results using a second genotype (imb211) that differs substantially in life history traits. Our study demonstrates that whereas changes in carbon dynamics and water transport are critical indicators of drought stress, they can be unrelated to visible metrics of mortality, i.e. lack of meristematic activity and regrowth. In contrast, membrane failure at the cellular scale is the most proximate cause of death. This hypothesis was corroborated in two gymnosperms (Picea engelmannii and Pinus contorta) that experienced lethal water stress in the field and in laboratory conditions. We suggest that measurement of chlorophyll a fluorescence can be used to operationally define plant death arising from drought, and improved plant characterization can enhance surface model predictions of drought mortality and its consequences to ecosystem services at a global scale.
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Affiliation(s)
| | - Brent E Ewers
- Botany Department, University of Wyoming, Laramie, Wyoming 82071
- Program in Ecology, University of Wyoming, Laramie, Wyoming 82071
| | - Heather N Speckman
- Botany Department, University of Wyoming, Laramie, Wyoming 82071
- Program in Ecology, University of Wyoming, Laramie, Wyoming 82071
| | - Timothy Llewellyn Aston
- Botany Department, University of Wyoming, Laramie, Wyoming 82071
- Program in Ecology, University of Wyoming, Laramie, Wyoming 82071
| | - Bridger J Huhn
- Botany Department, University of Wyoming, Laramie, Wyoming 82071
| | - Stanley B DeVore
- Botany Department, University of Wyoming, Laramie, Wyoming 82071
| | - Joshua T Ladwig
- Botany Department, University of Wyoming, Laramie, Wyoming 82071
| | - Rachel N Strawn
- Botany Department, University of Wyoming, Laramie, Wyoming 82071
| | - Cynthia Weinig
- Botany Department, University of Wyoming, Laramie, Wyoming 82071
- Program in Ecology, University of Wyoming, Laramie, Wyoming 82071
- Department of Molecular Biology, University of Wyoming, Laramie, Wyoming 82071
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29
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Juszczak I, Bartels D. LEA gene expression, RNA stability and pigment accumulation in three closely related Linderniaceae species differing in desiccation tolerance. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 255:59-71. [PMID: 28131342 DOI: 10.1016/j.plantsci.2016.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/29/2016] [Accepted: 10/05/2016] [Indexed: 05/14/2023]
Abstract
Desiccation-tolerant plants (Craterostigma plantagineum and Lindernia brevidens) evolved a highly efficient strategies to prevent dehydration-induced irreversible damage. The protection system involves synthesis of LEA proteins, decrease of photosynthetic activity and activation of antioxidant systems. The regulation of these processes requires joint action of multiple proteins. Here, we present comparative analyses of accumulation of transcripts encoding components of the protection machinery, such as selected LEA proteins, enzymes of the chlorophyll degradation pathway and anthocyanin biosynthesis enzymes in total and polysomal RNA pools. The analyses revealed that desiccation-tolerant plants recruit mRNAs to ribosomes with higher efficiency than the desiccation-sensitive species L. subracemosa. Desiccation-tolerant species accumulated high amounts of LEA transcripts during dehydration and precisely controlled the amounts of chlorophyll keeping it at a level sufficient to activate photosynthesis after rehydration. In contrast, mRNA of L. subracemosa was prone to dehydration-induced degradation, decomposition of the photosynthetic apparatus and degradation of free chlorophyll. Thus, the results of the studies point to differences in the control of gene expression and degradation of chlorophyll in desiccation-tolerant versus desiccation-sensitive species when the plants were subjected to dehydration.
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Affiliation(s)
- Ilona Juszczak
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Kirschallee 1, D-53115 Bonn, Germany
| | - Dorothea Bartels
- Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, Kirschallee 1, D-53115 Bonn, Germany.
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30
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Wang B, Du H, Zhang Z, Xu W, Deng X. BhbZIP60 from Resurrection Plant Boea hygrometrica Is an mRNA Splicing-Activated Endoplasmic Reticulum Stress Regulator Involved in Drought Tolerance. FRONTIERS IN PLANT SCIENCE 2017; 8:245. [PMID: 28286511 PMCID: PMC5323427 DOI: 10.3389/fpls.2017.00245] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 02/09/2017] [Indexed: 05/18/2023]
Abstract
Adverse environmental conditions cause endoplasmic reticulum (ER) stress in plants. To mitigate ER stress damage, ER associated transcription factors and inositol-requiring enzyme-1 (IRE1)-mediated bZIP60 mRNA splicing are activated in plants. A drought-induced gene, encoding the ortholog of AtbZIP60, was identified in the resurrection plant Boea hygrometrica, termed BhbZIP60. In response to ER stress and dehydration, BhbZIP60 mRNA can be spliced to create a frame shift in the C terminus by the excision of 23b segment in a manner of its ortholog in other plants, thus translocating to the nucleus instead of the cytoplasm. The splicing-activated BhbZIP60 (BhbZIP60S) could function in the same way as its Arabidopsis ortholog by restoring the molecular phenotype of the mutant atbzip60. When overexpressed in Arabidopsis, BhbZIP60S provided transgenic plants with enhanced tolerance to drought, tunicamycin and mannitol stresses with upregulation of the expressions of ER quality control (QC) genes (BiP2, BiP3, CNX1, and sPDI) and abscisic acid (ABA) responsive genes (RD29A, RAB18, and RD17). Furthermore, in the yeast one-hybrid system, BhbZIP60S was capable of interacting with ER stress responsive elements (ERSE and ERSE-II) that exist in the promoters of known ER-QC genes, but not binding to ABA responsive cis-elements (ABREs). Our results demonstrated that drought-induced BhbZIP60 may have a function in drought tolerance via the splicing-activated BhbZIP60S to mediate ER-QC by direct binding to the promoters of ER-QC genes. This study evidently demonstrates the involvement of ER-QC in the drought tolerance of Arabidopsis and the desiccation tolerance of the resurrection plant B. hygrometrica.
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Affiliation(s)
- Bo Wang
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of SciencesBeijing, China
- College of Agriculture, Xinjiang Agricultural UniversityUrumqi, China
| | - Hong Du
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of SciencesBeijing, China
- College of Life Sciences, University of Chinese Academy of SciencesBeijing, China
| | - Zhennan Zhang
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of SciencesBeijing, China
| | - Wenzhong Xu
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of SciencesBeijing, China
- *Correspondence: Xin Deng, Wenzhong Xu,
| | - Xin Deng
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of SciencesBeijing, China
- *Correspondence: Xin Deng, Wenzhong Xu,
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31
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Carniel FC, Gerdol M, Montagner A, Banchi E, De Moro G, Manfrin C, Muggia L, Pallavicini A, Tretiach M. New features of desiccation tolerance in the lichen photobiont Trebouxia gelatinosa are revealed by a transcriptomic approach. PLANT MOLECULAR BIOLOGY 2016; 91:319-339. [PMID: 26992400 DOI: 10.1007/s11103-016-0468-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 03/04/2016] [Indexed: 06/05/2023]
Abstract
Trebouxia is the most common lichen-forming genus of aero-terrestrial green algae and all its species are desiccation tolerant (DT). The molecular bases of this remarkable adaptation are, however, still largely unknown. We applied a transcriptomic approach to a common member of the genus, T. gelatinosa, to investigate the alteration of gene expression occurring after dehydration and subsequent rehydration in comparison to cells kept constantly hydrated. We sequenced, de novo assembled and annotated the transcriptome of axenically cultured T. gelatinosa by using Illumina sequencing technology. We tracked the expression profiles of over 13,000 protein-coding transcripts. During the dehydration/rehydration cycle c. 92 % of the total protein-coding transcripts displayed a stable expression, suggesting that the desiccation tolerance of T. gelatinosa mostly relies on constitutive mechanisms. Dehydration and rehydration affected mainly the gene expression for components of the photosynthetic apparatus, the ROS-scavenging system, Heat Shock Proteins, aquaporins, expansins, and desiccation related proteins (DRPs), which are highly diversified in T. gelatinosa, whereas Late Embryogenesis Abundant Proteins were not affected. Only some of these phenomena were previously observed in other DT green algae, bryophytes and resurrection plants, other traits being distinctive of T. gelatinosa, and perhaps related to its symbiotic lifestyle. Finally, the phylogenetic inference extended to DRPs of other chlorophytes, embryophytes and bacteria clearly pointed out that DRPs of chlorophytes are not orthologous to those of embryophytes: some of them were likely acquired through horizontal gene transfer from extremophile bacteria which live in symbiosis within the lichen thallus.
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Affiliation(s)
- Fabio Candotto Carniel
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, via L. Giorgieri, 10, 34127, Trieste, Italy
- Institute of Botany, University of Innsbruck, Sternwartestraße, 15, 6020, Innsbruck, Austria
| | - Marco Gerdol
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, via L. Giorgieri, 10, 34127, Trieste, Italy.
| | - Alice Montagner
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, via L. Giorgieri, 10, 34127, Trieste, Italy
| | - Elisa Banchi
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, via L. Giorgieri, 10, 34127, Trieste, Italy
| | - Gianluca De Moro
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, via L. Giorgieri, 10, 34127, Trieste, Italy
| | - Chiara Manfrin
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, via L. Giorgieri, 10, 34127, Trieste, Italy
| | - Lucia Muggia
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, via L. Giorgieri, 10, 34127, Trieste, Italy
| | - Alberto Pallavicini
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, via L. Giorgieri, 10, 34127, Trieste, Italy
| | - Mauro Tretiach
- Dipartimento di Scienze della Vita, Università degli Studi di Trieste, via L. Giorgieri, 10, 34127, Trieste, Italy
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Flores-Bavestrello A, Król M, Ivanov AG, Hüner NPA, García-Plazaola JI, Corcuera LJ, Bravo LA. Two Hymenophyllaceae species from contrasting natural environments exhibit a homoiochlorophyllous strategy in response to desiccation stress. JOURNAL OF PLANT PHYSIOLOGY 2016; 191:82-94. [PMID: 26720213 DOI: 10.1016/j.jplph.2015.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 12/07/2015] [Accepted: 12/10/2015] [Indexed: 05/28/2023]
Abstract
Hymenophyllaceae is a desiccation tolerant family of Pteridophytes which are poikilohydric epiphytes. Their fronds are composed by a single layer of cells and lack true mesophyll cells and stomata. Although they are associated with humid and shady environments, their vertical distribution varies along the trunk of the host plant with some species inhabiting the drier sides with a higher irradiance. The aim of this work was to compare the structure and function of the photosynthetic apparatus during desiccation and rehydration in two species, Hymenophyllum dentatum and Hymenoglossum cruentum, isolated from a contrasting vertical distribution along the trunk of their hosts. Both species were subjected to desiccation and rehydration kinetics to analyze frond phenotypic plasticity, as well as the structure, composition and function of the photosynthetic apparatus. Minimal differences in photosynthetic pigments were observed upon dehydration. Measurements of ϕPSII (effective quantum yield of PSII), ϕNPQ (quantum yield of the regulated energy dissipation of PSII), ϕNO (quantum yield of non-regulated energy dissipation of PSII), and TL (thermoluminescence) indicate that both species convert a functional photochemical apparatus into a structure which exhibits maximum quenching capacity in the dehydrated state with minimal changes in photosynthetic pigments and polypeptide compositions. This dehydration-induced conversion in the photosynthetic apparatus is completely reversible upon rehydration. We conclude that H. dentatum and H. cruentum are homoiochlorophyllous with respect to desiccation stress and exhibited no correlation between inherent desiccation tolerance and the vertical distribution along the host tree trunk.
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Affiliation(s)
| | - Marianna Król
- Department of Biology and The Biotron Centre for Experimental Climate Change Research, Western University, London, Ontario, N6A 5B7, Canada.
| | - Alexander G Ivanov
- Department of Biology and The Biotron Centre for Experimental Climate Change Research, Western University, London, Ontario, N6A 5B7, Canada.
| | - Norman P A Hüner
- Department of Biology and The Biotron Centre for Experimental Climate Change Research, Western University, London, Ontario, N6A 5B7, Canada.
| | - José Ignacio García-Plazaola
- Departamento de Biología Vegetal y Ecología, Universidad del País Vasco (UPV/EHU), Aptdo. 644, E-48080 Bilbao, Spain.
| | - Luis J Corcuera
- Departamento de Botánica, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Chile.
| | - León A Bravo
- Departamento de Ciencias Agronómicas y Recursos Naturales, Facultad de Ciencias Agronómicas y Forestales, Universidad de La Frontera, Chile; Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Chile.
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Moore JP, Farrant JM. Editorial: Current advances and challenges in understanding plant desiccation tolerance. FRONTIERS IN PLANT SCIENCE 2015; 6:768. [PMID: 26483800 PMCID: PMC4586587 DOI: 10.3389/fpls.2015.00768] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 09/07/2015] [Indexed: 05/28/2023]
Affiliation(s)
- John P. Moore
- Department of Viticulture and Oenology, Faculty of AgriSciences, Institute for Wine Biotechnology, Stellenbosch UniversityStellenbosch, South Africa
| | - Jill M. Farrant
- Department of Molecular and Cell Biology, University of Cape TownCape Town, South Africa
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Zhu Y, Wang B, Phillips J, Zhang ZN, Du H, Xu T, Huang LC, Zhang XF, Xu GH, Li WL, Wang Z, Wang L, Liu YX, Deng X. Global Transcriptome Analysis Reveals Acclimation-Primed Processes Involved in the Acquisition of Desiccation Tolerance in Boea hygrometrica. PLANT & CELL PHYSIOLOGY 2015; 56:1429-41. [PMID: 25907569 DOI: 10.1093/pcp/pcv059] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 04/14/2015] [Indexed: 05/18/2023]
Abstract
Boea hygrometrica resurrection plants require a period of acclimation by slow soil-drying in order to survive a subsequent period of rapid desiccation. The molecular basis of this observation was investigated by comparing gene expression profiles under different degrees of water deprivation. Transcripts were clustered according to the expression profiles in plants that were air-dried (rapid desiccation), soil-dried (gradual desiccation), rehydrated (acclimated) and air-dried after acclimation. Although phenotypically indistinguishable, it was shown by principal component analysis that the gene expression profiles in rehydrated, acclimated plants resemble those of desiccated plants more closely than those of hydrated acclimated plants. Enrichment analysis based on gene ontology was performed to deconvolute the processes that accompanied desiccation tolerance. Transcripts associated with autophagy and α-tocopherol accumulation were found to be activated in both air-dried, acclimated plants and soil-dried non-acclimated plants. Furthermore, transcripts associated with biosynthesis of ascorbic acid, cell wall catabolism, chaperone-assisted protein folding, respiration and macromolecule catabolism were activated and maintained during soil-drying and rehydration. Based on these findings, we hypothesize that activation of these processes leads to the establishment of an optimal physiological and cellular state that enables tolerance during rapid air-drying. Our study provides a novel insight into the transcriptional regulation of critical priming responses to enable survival following rapid dehydration in B. hygrometrica.
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Affiliation(s)
- Yan Zhu
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China These authors contributed equally to this work
| | - Bo Wang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China These authors contributed equally to this work
| | - Jonathan Phillips
- IMBIO (Molekulare Physiologie und Biotechnologie der Pflanzen), University of Bonn, Kirschallee 1, D-53115 Bonn, Germany Present address: Monsanto Company, 800 North Lindbergh Blvd, St. Louis, MO 63167, USA
| | - Zhen-Nan Zhang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Hong Du
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Tao Xu
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Lian-Cheng Huang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Xiao-Fei Zhang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Guang-Hui Xu
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Wen-Long Li
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Zhi Wang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Ling Wang
- Shanghai OE Biomedical Technology Co., Ltd., Shanghai 201210, China
| | - Yong-Xiu Liu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Xin Deng
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
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Charuvi D, Nevo R, Shimoni E, Naveh L, Zia A, Adam Z, Farrant JM, Kirchhoff H, Reich Z. Photoprotection conferred by changes in photosynthetic protein levels and organization during dehydration of a homoiochlorophyllous resurrection plant. PLANT PHYSIOLOGY 2015; 167:1554-65. [PMID: 25713340 PMCID: PMC4378169 DOI: 10.1104/pp.114.255794] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 02/20/2015] [Indexed: 05/18/2023]
Abstract
During desiccation, homoiochlorophyllous resurrection plants retain most of their photosynthetic apparatus, allowing them to resume photosynthetic activity quickly upon water availability. These plants rely on various mechanisms to prevent the formation of reactive oxygen species and/or protect their tissues from the damage they inflict. In this work, we addressed the issue of how homoiochlorophyllous resurrection plants deal with the problem of excessive excitation/electron pressures during dehydration using Craterostigma pumilum as a model plant. To investigate the alterations in the supramolecular organization of photosynthetic protein complexes, we examined cryoimmobilized, freeze-fractured leaf tissues using (cryo)scanning electron microscopy. These examinations revealed rearrangements of photosystem II (PSII) complexes, including a lowered density during moderate dehydration, consistent with a lower level of PSII proteins, as shown by biochemical analyses. The latter also showed a considerable decrease in the level of cytochrome f early during dehydration, suggesting that initial regulation of the inhibition of electron transport is achieved via the cytochrome b6f complex. Upon further dehydration, PSII complexes are observed to arrange into rows and semicrystalline arrays, which correlates with the significant accumulation of sucrose and the appearance of inverted hexagonal lipid phases within the membranes. As opposed to PSII and cytochrome f, the light-harvesting antenna complexes of PSII remain stable throughout the course of dehydration. Altogether, these results, along with photosynthetic activity measurements, suggest that the protection of retained photosynthetic components is achieved, at least in part, via the structural rearrangements of PSII and (likely) light-harvesting antenna complexes into a photochemically quenched state.
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Affiliation(s)
- Dana Charuvi
- Department of Biological Chemistry (D.C., R.N., Z.R.) and Electron Microscopy Unit (E.S.), Weizmann Institute of Science, Rehovot 76100, Israel;Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel (L.N., Z.A.);Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340 (A.Z., H.K.); andDepartment of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa (J.M.F.)
| | - Reinat Nevo
- Department of Biological Chemistry (D.C., R.N., Z.R.) and Electron Microscopy Unit (E.S.), Weizmann Institute of Science, Rehovot 76100, Israel;Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel (L.N., Z.A.);Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340 (A.Z., H.K.); andDepartment of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa (J.M.F.)
| | - Eyal Shimoni
- Department of Biological Chemistry (D.C., R.N., Z.R.) and Electron Microscopy Unit (E.S.), Weizmann Institute of Science, Rehovot 76100, Israel;Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel (L.N., Z.A.);Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340 (A.Z., H.K.); andDepartment of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa (J.M.F.)
| | - Leah Naveh
- Department of Biological Chemistry (D.C., R.N., Z.R.) and Electron Microscopy Unit (E.S.), Weizmann Institute of Science, Rehovot 76100, Israel;Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel (L.N., Z.A.);Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340 (A.Z., H.K.); andDepartment of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa (J.M.F.)
| | - Ahmad Zia
- Department of Biological Chemistry (D.C., R.N., Z.R.) and Electron Microscopy Unit (E.S.), Weizmann Institute of Science, Rehovot 76100, Israel;Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel (L.N., Z.A.);Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340 (A.Z., H.K.); andDepartment of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa (J.M.F.)
| | - Zach Adam
- Department of Biological Chemistry (D.C., R.N., Z.R.) and Electron Microscopy Unit (E.S.), Weizmann Institute of Science, Rehovot 76100, Israel;Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel (L.N., Z.A.);Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340 (A.Z., H.K.); andDepartment of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa (J.M.F.)
| | - Jill M Farrant
- Department of Biological Chemistry (D.C., R.N., Z.R.) and Electron Microscopy Unit (E.S.), Weizmann Institute of Science, Rehovot 76100, Israel;Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel (L.N., Z.A.);Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340 (A.Z., H.K.); andDepartment of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa (J.M.F.)
| | - Helmut Kirchhoff
- Department of Biological Chemistry (D.C., R.N., Z.R.) and Electron Microscopy Unit (E.S.), Weizmann Institute of Science, Rehovot 76100, Israel;Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel (L.N., Z.A.);Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340 (A.Z., H.K.); andDepartment of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa (J.M.F.)
| | - Ziv Reich
- Department of Biological Chemistry (D.C., R.N., Z.R.) and Electron Microscopy Unit (E.S.), Weizmann Institute of Science, Rehovot 76100, Israel;Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Rehovot 76100, Israel (L.N., Z.A.);Institute of Biological Chemistry, Washington State University, Pullman, Washington 99164-6340 (A.Z., H.K.); andDepartment of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa (J.M.F.)
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Li W, Xu F, Chen S, Zhang Z, Zhao Y, Jin Y, Li M, Zhu Y, Liu Y, Yang Y, Deng X. A comparative study on Ca content and distribution in two Gesneriaceae species reveals distinctive mechanisms to cope with high rhizospheric soluble calcium. FRONTIERS IN PLANT SCIENCE 2014; 5:647. [PMID: 25477893 PMCID: PMC4238373 DOI: 10.3389/fpls.2014.00647] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 11/02/2014] [Indexed: 05/09/2023]
Abstract
Excessive Ca is toxic to plants thus significantly affects plant growth and species distribution in Ca-rich karst areas. To understand how plants survive high Ca soil, laboratory experiments were established to compare the physiological responses and internal Ca distribution in organ, tissue, cell, and intracellular levels under different Ca levels for Lysionotus pauciflorus and Boea hygrometrica, two karst habitant Gesneriaceae species in Southwest China. In the controlled condition, L. pauciflorus could survive as high as 200 mM rhizospheric soluble Ca, attributed to a series of physiological responses and preferential storage that limited Ca accumulation in chloroplasts of palisade cells. In contrast, B. hygrometrica could survive only 20 mM rhizospheric soluble Ca, but accumulated a high level of internal Ca in both palisade and spongy cells without disturbance on photosynthetic activity. By phenotype screening of transgenic plants expressing high Ca-inducible genes from B. hygrometrica, the expression of BhDNAJC2 in A. thaliana was found to enhance plant growth and photosynthesis under high soluble Ca stress. BhDNAJC2 encodes a recently reported heat shock protein (HSP) 40 family DnaJ-domain protein. The Ca-resistant phenotype of BhDNAJC2 highlights the important role of chaperone-mediated protein quality control in Ca tolerance in B. hygrometrica. Taken together, our results revealed that distinctive mechanisms were employed in the two Gesneriaceae karst habitants to cope with a high Ca environment.
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Affiliation(s)
- Wenlong Li
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, The Chinese Academy of SciencesBeijing, China
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of SciencesBeijing, China
- College of Life Sciences, University of Chinese Academy of SciencesBeijing, China
| | - Falun Xu
- Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan UniversityChengdu, China
| | - Shixuan Chen
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, The Chinese Academy of SciencesBeijing, China
| | - Zhennan Zhang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, The Chinese Academy of SciencesBeijing, China
| | - Yan Zhao
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, The Chinese Academy of SciencesBeijing, China
| | - Yukuan Jin
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, The Chinese Academy of SciencesBeijing, China
| | - Meijing Li
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, The Chinese Academy of SciencesBeijing, China
| | - Yan Zhu
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, The Chinese Academy of SciencesBeijing, China
| | - Yongxiu Liu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of SciencesBeijing, China
| | - Yi Yang
- Key Laboratory of Bio-Resource and Eco-Environment, Ministry of Education, College of Life Sciences, Sichuan UniversityChengdu, China
| | - Xin Deng
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, The Chinese Academy of SciencesBeijing, China
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37
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Gechev TS, Hille J, Woerdenbag HJ, Benina M, Mehterov N, Toneva V, Fernie AR, Mueller-Roeber B. Natural products from resurrection plants: Potential for medical applications. Biotechnol Adv 2014; 32:1091-101. [DOI: 10.1016/j.biotechadv.2014.03.005] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 03/10/2014] [Accepted: 03/11/2014] [Indexed: 01/25/2023]
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