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Marks RA, Van Der Pas L, Schuster J, Gilman IS, VanBuren R. Convergent evolution of desiccation tolerance in grasses. NATURE PLANTS 2024:10.1038/s41477-024-01729-5. [PMID: 38906996 DOI: 10.1038/s41477-024-01729-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 05/21/2024] [Indexed: 06/23/2024]
Abstract
Desiccation tolerance has evolved repeatedly in plants as an adaptation to survive extreme environments. Plants use similar biophysical and cellular mechanisms to survive life without water, but convergence at the molecular, gene and regulatory levels remains to be tested. Here we explore the evolutionary mechanisms underlying the recurrent evolution of desiccation tolerance across grasses. We observed substantial convergence in gene duplication and expression patterns associated with desiccation. Syntenic genes of shared origin are activated across species, indicative of parallel evolution. In other cases, similar metabolic pathways are induced but using different gene sets, pointing towards phenotypic convergence. Species-specific mechanisms supplement these shared core mechanisms, underlining the complexity and diversity of evolutionary adaptations to drought. Our findings provide insight into the evolutionary processes driving desiccation tolerance and highlight the roles of parallel and convergent evolution in response to environmental challenges.
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Affiliation(s)
- Rose A Marks
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.
- Plant Resilience Institute, Michigan State University, East Lansing, MI, USA.
- Department of Plant Biology, University of Illinois, Urbana, IL, USA.
| | - Llewelyn Van Der Pas
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town, South Africa
| | - Jenny Schuster
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, USA
| | - Ian S Gilman
- Department of Horticulture, Michigan State University, East Lansing, MI, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, USA
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, MI, USA.
- Plant Resilience Institute, Michigan State University, East Lansing, MI, USA.
- Department of Plant Biology, Michigan State University, East Lansing, MI, USA.
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, USA.
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2
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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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3
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Marks RA, Delgado P, Makonya GM, Cooper K, VanBuren R, Farrant JM. Higher order polyploids exhibit enhanced desiccation tolerance in the grass Microchloa caffra. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:3612-3623. [PMID: 38511472 PMCID: PMC11156804 DOI: 10.1093/jxb/erae126] [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: 08/24/2023] [Accepted: 03/15/2024] [Indexed: 03/22/2024]
Abstract
Desiccation tolerance evolved recurrently across diverse plant lineages to enable survival in water-limited conditions. Many resurrection plants are polyploid, and several groups have hypothesized that polyploidy contributed to the evolution of desiccation tolerance. However, due to the vast phylogenetic distance between resurrection plant lineages, the rarity of desiccation tolerance, and the prevalence of polyploidy in plants, this hypothesis has been difficult to test. Here, we surveyed natural variation in morphological, reproductive, and desiccation tolerance traits across several cytotypes of a single species to test for links between polyploidy and increased resilience. We sampled multiple natural populations of the resurrection grass Microchloa caffra across an environmental gradient ranging from mesic to xeric in South Africa. We describe two distinct ecotypes of M. caffra that occupy different extremes of the environmental gradient and exhibit consistent differences in ploidy, morphological, reproductive, and desiccation tolerance traits in both field and common growth conditions. Interestingly, plants with more polyploid genomes exhibited consistently higher recovery from desiccation, were less reproductive, and were larger than plants with smaller genomes and lower ploidy. These data indicate that selective pressures in increasingly xeric sites may play a role in maintaining and increasing desiccation tolerance and are mediated by changes in ploidy.
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Affiliation(s)
- Rose A Marks
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa
| | - Paula Delgado
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa
| | - Givemore Munashe Makonya
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa
- Washington State University, Irrigated Agriculture Research and Extension Centre, Prosser, WA 99350, USA
| | - Keren Cooper
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa
| | - Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA
| | - Jill M Farrant
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa
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4
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Haxim Y, Cao T, Li X, Liu X, Liang Y, Hawar A, Yang R, Zhang D. Autophagy functions as a cytoprotective mechanism by regulating programmed cell death during desiccation in Syntrichia caninervis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 211:108620. [PMID: 38714124 DOI: 10.1016/j.plaphy.2024.108620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/02/2024] [Accepted: 04/08/2024] [Indexed: 05/09/2024]
Abstract
Desiccation is a state of extreme water loss that is lethal to many plant species. Some desert plants have evolved unique strategies to cope with desiccation stress in their natural environment. Here we present the remarkable stress management mechanism of Syntrichia caninervis, a desert moss species which exhibits an 'A' category of desiccation tolerance. Our research demonstrated that desiccation stress triggers autophagy in S. caninervis while inhibiting Programmed Cell Death (PCD). Silencing of two autophagy-related genes, ATG6 and ATG2, in S. caninervis promoted PCD. Desiccation treatment accelerated cell death in ATG6 and ATG2 gene-silenced S. caninervis. Notably, trehalose was not detected during desiccation, and exogenous application of trehalose cannot activate autophagy. These results suggested that S. caninervis is independent of trehalose accumulation to triggered autophagy. Our results showed that autophagy function as prosurvival mechanism to enhance desiccation tolerance of S. caninervis. Our findings enrich the knowledge of the role of autophagy in plant stress response and may provide new insight into understanding of plant desiccation tolerance.
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Affiliation(s)
- Yakupjan Haxim
- National Key Laboratory of Ecological Security and Sustainable Development in Arid Areas, Chinese Academy of Sciences, Urumqi, 800311, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Geography and Ecology, Chinese Academy of Sciences, Urumqi, 830011, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000, Urumqi, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
| | - Ting Cao
- National Key Laboratory of Ecological Security and Sustainable Development in Arid Areas, Chinese Academy of Sciences, Urumqi, 800311, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoshuang Li
- National Key Laboratory of Ecological Security and Sustainable Development in Arid Areas, Chinese Academy of Sciences, Urumqi, 800311, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Geography and Ecology, Chinese Academy of Sciences, Urumqi, 830011, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000, Urumqi, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
| | - Xiujin Liu
- National Key Laboratory of Ecological Security and Sustainable Development in Arid Areas, Chinese Academy of Sciences, Urumqi, 800311, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Geography and Ecology, Chinese Academy of Sciences, Urumqi, 830011, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000, Urumqi, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
| | - Yuqing Liang
- National Key Laboratory of Ecological Security and Sustainable Development in Arid Areas, Chinese Academy of Sciences, Urumqi, 800311, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Geography and Ecology, Chinese Academy of Sciences, Urumqi, 830011, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000, Urumqi, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
| | - Amangul Hawar
- National Key Laboratory of Ecological Security and Sustainable Development in Arid Areas, Chinese Academy of Sciences, Urumqi, 800311, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Geography and Ecology, Chinese Academy of Sciences, Urumqi, 830011, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000, Urumqi, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
| | - Ruirui Yang
- National Key Laboratory of Ecological Security and Sustainable Development in Arid Areas, Chinese Academy of Sciences, Urumqi, 800311, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Geography and Ecology, Chinese Academy of Sciences, Urumqi, 830011, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000, Urumqi, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China
| | - Daoyuan Zhang
- National Key Laboratory of Ecological Security and Sustainable Development in Arid Areas, Chinese Academy of Sciences, Urumqi, 800311, China; State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Geography and Ecology, Chinese Academy of Sciences, Urumqi, 830011, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000, Urumqi, China; Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, 838008, China.
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5
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Belott CJ, Gusev OA, Kikawada T, Menze MA. Membraneless and membrane-bound organelles in an anhydrobiotic cell line are protected from desiccation-induced damage. Cell Stress Chaperones 2024; 29:425-436. [PMID: 38608858 PMCID: PMC11061232 DOI: 10.1016/j.cstres.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/14/2024] Open
Abstract
Anhydrobiotic species can survive virtually complete water loss by entering a reversible ametabolic glassy state that may persist for years in ambient conditions. The Pv11 cell line was derived from the egg mass of the anhydrobiotic midge, Polypedilum vanderplanki, and is currently the only available anhydrobiotic cell line. Our results demonstrate that the necessary preconditioning for Pv11 cells to enter anhydrobiosis causes autophagy and reduces mitochondrial respiration by over 70%. We speculate that reorganizing cellular bioenergetics to create and conserve energy stores may be valuable to successfully recover after rehydration. Furthermore, mitochondria in preconditioned cells lose their membrane potential during desiccation but rapidly restore it within 30 min upon rehydration, demonstrating that the inner mitochondrial membrane integrity is well-preserved. Strikingly, the nucleolus remains visible immediately upon rehydration in preconditioned cells while absent in control cells. In contrast, a preconditioning-induced membraneless organelle reformed after rehydration, demonstrating that membraneless organelles in Pv11 cells can be either stabilized or recovered. Staining the endoplasmic reticulum and the Golgi apparatus revealed that these organelles fragment during preconditioning. We hypothesize that this process reduces sheering stress caused by rapid changes in cellular volume during desiccation and rehydration. Additionally, preconditioning was found to cause the filamentous-actin (F-actin) network to disassemble significantly and reduce the fusion of adjacent plasma membranes. This study offers several exciting avenues for future studies in the animal model and Pv11 cell line that will further our understanding of anhydrobiosis and may lead to advancements in storing sensitive biologics at ambient temperatures for months or years.
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Affiliation(s)
- Clinton J Belott
- Department of Biology, University of Louisville, Louisville, KY, USA; Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan.
| | - Oleg A Gusev
- Extreme Biology Laboratory, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Tatarstan, Russia; Molecular Biomimetics Group, Life Improvement by Future Technologies (LIFT) Center, Moscow, Russia; Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan.
| | - Takahiro Kikawada
- Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan.
| | - Michael A Menze
- Department of Biology, University of Louisville, Louisville, KY, USA
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6
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Fonseca de Oliveira GR, Amaral da Silva EA. Tropical peanut maturation scale for harvesting seeds with superior quality. FRONTIERS IN PLANT SCIENCE 2024; 15:1376370. [PMID: 38784060 PMCID: PMC11113016 DOI: 10.3389/fpls.2024.1376370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 04/16/2024] [Indexed: 05/25/2024]
Abstract
Determining the moment for harvesting the tropical peanut with a focus on superior seed quality is not an easy task. Particularities such as indeterminate flowering, underground fruiting and uneven maturation further increase this technical challenge. It is in this context that we aim to investigate harvest indicators based on the maturation and late maturation phases of tropical peanuts to obtain seeds with superior physiological and health quality. The plants were grown in field conditions and their development stages were carefully monitored until seed production. The water content, dry weight, germination capacity, desiccation tolerance, vigor, longevity, and seed pathogens were evaluated throughout these stages. We showed that seeds from early stages (R5 and R6) did not fully tolerate desiccation and were highly sensitive to pathogen contamination after storage (Aspergillus, Penicillium, and Bacteria). At late stages (R7, R8, and R9), the seeds had optimized vigor, longevity and bioprotection against fungi and thermal stress. The peanut maturation scale for tropical agriculture provides unique harvesting guidelines that make it possible to monitor the plants' development stages with a focus on producing superior quality seeds.
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7
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Kuczyńska-Wiśnik D, Stojowska-Swędrzyńska K, Laskowska E. Intracellular Protective Functions and Therapeutical Potential of Trehalose. Molecules 2024; 29:2088. [PMID: 38731579 PMCID: PMC11085779 DOI: 10.3390/molecules29092088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/28/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
Trehalose is a naturally occurring, non-reducing saccharide widely distributed in nature. Over the years, research on trehalose has revealed that this initially thought simple storage molecule is a multifunctional and multitasking compound protecting cells against various stress factors. This review presents data on the role of trehalose in maintaining cellular homeostasis under stress conditions and in the virulence of bacteria and fungi. Numerous studies have demonstrated that trehalose acts in the cell as an osmoprotectant, chemical chaperone, free radical scavenger, carbon source, virulence factor, and metabolic regulator. The increasingly researched medical and therapeutic applications of trehalose are also discussed.
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Affiliation(s)
| | | | - Ewa Laskowska
- Department of General and Medical Biochemistry, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland; (D.K.-W.); (K.S.-S.)
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8
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Pei S, Tao Q, Li W, Qi G, Wang B, Wang Y, Dai S, Shen Q, Wang X, Wu X, Xu S, Theprungsirikul L, Zhang J, Liang L, Liu Y, Chen K, Shen Y, Crawford BM, Cheng M, Zhang Q, Wang Y, Liu H, Yang B, Krichilsky B, Pei J, Song K, Johnson DM, Jiang Z, Wu F, Swift GB, Yang H, Liu Z, Zou X, Vo-Dinh T, Liu F, Pei ZM, Yuan F. Osmosensor-mediated control of Ca 2+ spiking in pollen germination. Nature 2024; 629:1118-1125. [PMID: 38778102 PMCID: PMC11136663 DOI: 10.1038/s41586-024-07445-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 04/19/2024] [Indexed: 05/25/2024]
Abstract
Higher plants survive terrestrial water deficiency and fluctuation by arresting cellular activities (dehydration) and resuscitating processes (rehydration). However, how plants monitor water availability during rehydration is unknown. Although increases in hypo-osmolarity-induced cytosolic Ca2+ concentration (HOSCA) have long been postulated to be the mechanism for sensing hypo-osmolarity in rehydration1,2, the molecular basis remains unknown. Because osmolarity triggers membrane tension and the osmosensing specificity of osmosensing channels can only be determined in vivo3-5, these channels have been classified as a subtype of mechanosensors. Here we identify bona fide cell surface hypo-osmosensors in Arabidopsis and find that pollen Ca2+ spiking is controlled directly by water through these hypo-osmosensors-that is, Ca2+ spiking is the second messenger for water status. We developed a functional expression screen in Escherichia coli for hypo-osmosensitive channels and identified OSCA2.1, a member of the hyperosmolarity-gated calcium-permeable channel (OSCA) family of proteins6. We screened single and high-order OSCA mutants, and observed that the osca2.1/osca2.2 double-knockout mutant was impaired in pollen germination and HOSCA. OSCA2.1 and OSCA2.2 function as hypo-osmosensitive Ca2+-permeable channels in planta and in HEK293 cells. Decreasing osmolarity of the medium enhanced pollen Ca2+ oscillations, which were mediated by OSCA2.1 and OSCA2.2 and required for germination. OSCA2.1 and OSCA2.2 convert extracellular water status into Ca2+ spiking in pollen and may serve as essential hypo-osmosensors for tracking rehydration in plants.
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Affiliation(s)
- Songyu Pei
- College of Horticulture and Landscape, Hunan Agricultural University, Changsha, China
- Department of Biology, Duke University, Durham, NC, USA
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, USA
- College of Life Sciences, Zhejiang University, Hangzhou, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Qi Tao
- College of Life Sciences, Zhejiang University, Hangzhou, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Wenke Li
- College of Life Sciences, Zhejiang University, Hangzhou, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Guoning Qi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Borong Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Yan Wang
- College of Horticulture and Landscape, Hunan Agricultural University, Changsha, China
| | - Shiwen Dai
- College of Horticulture and Landscape, Hunan Agricultural University, Changsha, China
| | - Qiujing Shen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Xi Wang
- College of Life Sciences, Zhejiang University, Hangzhou, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Xiaomei Wu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Shijian Xu
- Department of Biology, Duke University, Durham, NC, USA
| | | | | | - Liang Liang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Yuantao Liu
- College of Life Sciences, Zhejiang University, Hangzhou, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Kena Chen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Yang Shen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | | | - Mengjia Cheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Qi Zhang
- College of Life Sciences, Zhejiang University, Hangzhou, China
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Yiqi Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Hongli Liu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | - Benguang Yang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China
| | | | - Jessica Pei
- Department of Biology, Duke University, Durham, NC, USA
- Fuqua School of Business, Duke University, Durham, NC, USA
| | - Karen Song
- Department of Biology, Duke University, Durham, NC, USA
| | | | | | - Feihua Wu
- Department of Biology, Duke University, Durham, NC, USA
| | - Gary B Swift
- Department of Physics, Duke University, Durham, NC, USA
| | - Huanghe Yang
- Department of Biochemistry, Duke University, Durham, NC, USA
| | - Zhonghua Liu
- College of Horticulture and Landscape, Hunan Agricultural University, Changsha, China
| | - Xuexiao Zou
- College of Horticulture and Landscape, Hunan Agricultural University, Changsha, China
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, USA
| | - Feng Liu
- College of Horticulture and Landscape, Hunan Agricultural University, Changsha, China.
- Department of Biology, Duke University, Durham, NC, USA.
| | - Zhen-Ming Pei
- Department of Biology, Duke University, Durham, NC, USA.
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC, USA.
| | - Fang Yuan
- College of Horticulture and Landscape, Hunan Agricultural University, Changsha, China.
- Department of Biology, Duke University, Durham, NC, USA.
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, China.
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9
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Du B, Haensch R, Alfarraj S, Rennenberg H. Strategies of plants to overcome abiotic and biotic stresses. Biol Rev Camb Philos Soc 2024. [PMID: 38561998 DOI: 10.1111/brv.13079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 03/21/2024] [Accepted: 03/26/2024] [Indexed: 04/04/2024]
Abstract
In their environment, plants are exposed to a multitude of abiotic and biotic stresses that differ in intensity, duration and severity. As sessile organisms, they cannot escape these stresses, but instead have developed strategies to overcome them or to compensate for the consequences of stress exposure. Defence can take place at different levels and the mechanisms involved are thought to differ in efficiency across these levels. To minimise metabolic constraints and to reduce the costs of stress defence, plants prioritise first-line defence strategies in the apoplastic space, involving ascorbate, defensins and small peptides, as well as secondary metabolites, before cellular processes are affected. In addition, a large number of different symplastic mechanisms also provide efficient stress defence, including chemical antioxidants, antioxidative enzymes, secondary metabolites, defensins and other peptides as well as proteins. At both the symplastic and the apoplastic level of stress defence and compensation, a number of specialised transporters are thought to be involved in exchange across membranes that still have not been identified, and information on the regeneration of different defence compounds remains ambiguous. In addition, strategies to overcome and compensate for stress exposure operate not only at the cellular, but also at the organ and whole-plant levels, including stomatal regulation, and hypersensitive and systemic responses to prevent or reduce the spread of stress impacts within the plant. Defence can also take place at the ecosystem level by root exudation of signalling molecules and the emission of volatile organic compounds, either directly or indirectly into the rhizosphere and/or the aboveground atmosphere. The mechanisms by which plants control the production of these compounds and that mediate perception of stressful conditions are still not fully understood. Here we summarise plant defence strategies from the cellular to ecosystem level, discuss their advantages and disadvantages for plant growth and development, elucidate the current state of research on the transport and regeneration capacity of defence metabolites, and outline insufficiently explored questions for further investigation.
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Affiliation(s)
- Baoguo Du
- College of Life Science and Biotechnology, Ecological Security and Protection Key laboratory of Sichuan Province, Mianyang Normal University, Mianxing Road West 166, Mianyang, 621000, PR China
- Chair of Tree Physiology, Institute of Forest Sciences, University of Freiburg, Georges-Köhler-Allee 53, Freiburg, D-79110, Germany
| | - Robert Haensch
- Institute of Plant Biology, Technische Universität Braunschweig, Humboldtstr. 1, Braunschweig, D-38106, Germany
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, Chongqing, 400715, PR China
| | - Saleh Alfarraj
- King Saud University, PO Box 2455, Riyadh, 11451, Saudi Arabia
| | - Heinz Rennenberg
- Chair of Tree Physiology, Institute of Forest Sciences, University of Freiburg, Georges-Köhler-Allee 53, Freiburg, D-79110, Germany
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University, No. 2, Tiansheng Road, Beibei District, Chongqing, 400715, PR China
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10
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Gao B, Li X, Liang Y, Chen M, Liu H, Liu Y, Wang J, Zhang J, Zhang Y, Oliver MJ, Zhang D. Drying without dying: A genome database for desiccation-tolerant plants and evolution of desiccation tolerance. PLANT PHYSIOLOGY 2024; 194:2249-2262. [PMID: 38109500 DOI: 10.1093/plphys/kiad672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 11/10/2023] [Accepted: 11/26/2023] [Indexed: 12/20/2023]
Abstract
Desiccation is typically fatal, but a small number of land plants have evolved vegetative desiccation tolerance (VDT), allowing them to dry without dying through a process called anhydrobiosis. Advances in sequencing technologies have enabled the investigation of genomes for desiccation-tolerant plants over the past decade. However, a dedicated and integrated database for these valuable genomic resources has been lacking. Our prolonged interest in VDT plant genomes motivated us to create the "Drying without Dying" database, which contains a total of 16 VDT-related plant genomes (including 10 mosses) and incorporates 10 genomes that are closely related to VDT plants. The database features bioinformatic tools, such as blast and homologous cluster search, sequence retrieval, Gene Ontology term and metabolic pathway enrichment statistics, expression profiling, co-expression network extraction, and JBrowser exploration for each genome. To demonstrate its utility, we conducted tailored PFAM family statistical analyses, and we discovered that the drought-responsive ABA transporter AWPM-19 family is significantly tandemly duplicated in all bryophytes but rarely so in tracheophytes. Transcriptomic investigations also revealed that response patterns following desiccation diverged between bryophytes and angiosperms. Combined, the analyses provided genomic and transcriptomic evidence supporting a possible divergence and lineage-specific evolution of VDT in plants. The database can be accessed at http://desiccation.novogene.com. We expect this initial release of the "Drying without Dying" plant genome database will facilitate future discovery of VDT genetic resources.
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Affiliation(s)
- Bei Gao
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Xiaoshuang Li
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Yuqing Liang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Moxian Chen
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Huiliang Liu
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Yinggao Liu
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Jiancheng Wang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Jianhua Zhang
- Department of Biology, Hong Kong Baptist University and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Kowloon Tong, Hong Kong 999077, China
| | - Yuanming Zhang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Melvin J Oliver
- Division of Plant Sciences, Interdisciplinary Plant Group, University of Missouri, Columbia, MO 65211, USA
| | - Daoyuan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
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11
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KC S, Nguyen K, Nicholson V, Walgren A, Trent T, Gollub E, Romero S, Holehouse AS, Sukenik S, Boothby TC. Disordered proteins interact with the chemical environment to tune their protective function during drying. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.28.582506. [PMID: 38464187 PMCID: PMC10925285 DOI: 10.1101/2024.02.28.582506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
The conformational ensemble and function of intrinsically disordered proteins (IDPs) are sensitive to their solution environment. The inherent malleability of disordered proteins combined with the exposure of their residues accounts for this sensitivity. One context in which IDPs play important roles that is concomitant with massive changes to the intracellular environment is during desiccation (extreme drying). The ability of organisms to survive desiccation has long been linked to the accumulation of high levels of cosolutes such as trehalose or sucrose as well as the enrichment of IDPs, such as late embryogenesis abundant (LEA) proteins or cytoplasmic abundant heat soluble (CAHS) proteins. Despite knowing that IDPs play important roles and are co-enriched alongside endogenous, species-specific cosolutes during desiccation, little is known mechanistically about how IDP-cosolute interactions influence desiccation tolerance. Here, we test the notion that the protective function of desiccation-related IDPs is enhanced through conformational changes induced by endogenous cosolutes. We find that desiccation-related IDPs derived from four different organisms spanning two LEA protein families and the CAHS protein family, synergize best with endogenous cosolutes during drying to promote desiccation protection. Yet the structural parameters of protective IDPs do not correlate with synergy for either CAHS or LEA proteins. We further demonstrate that for CAHS, but not LEA proteins, synergy is related to self-assembly and the formation of a gel. Our results demonstrate that functional synergy between IDPs and endogenous cosolutes is a convergent desiccation protection strategy seen among different IDP families and organisms, yet, the mechanisms underlying this synergy differ between IDP families.
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Affiliation(s)
- Shraddha KC
- University of Wyoming, Department of Molecular Biology. Laramie, WY
| | - Kenny Nguyen
- University of Wyoming, Department of Molecular Biology. Laramie, WY
| | | | - Annie Walgren
- University of Wyoming, Department of Molecular Biology. Laramie, WY
| | - Tony Trent
- University of Wyoming, Department of Molecular Biology. Laramie, WY
| | - Edith Gollub
- Department of Chemistry and Biochemistry, University of California Merced, Merced, CA, USA
| | - Sofia Romero
- Department of Chemistry and Biochemistry, University of California Merced, Merced, CA, USA
| | - Alex S. Holehouse
- Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St. Louis, MO, USA
- Center for Biomolecular Condensates, Washington University in St. Louis, St. Louis, MO, USA
| | - Shahar Sukenik
- Department of Chemistry and Biochemistry, University of California Merced, Merced, CA, USA
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12
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Hembach L, Niemeyer PW, Schmitt K, Zegers JMS, Scholz P, Brandt D, Dabisch JJ, Valerius O, Braus GH, Schwarzländer M, de Vries J, Rensing SA, Ischebeck T. Proteome plasticity during Physcomitrium patens spore germination - from the desiccated phase to heterotrophic growth and reconstitution of photoautotrophy. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 117:1466-1486. [PMID: 38059656 DOI: 10.1111/tpj.16574] [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: 08/07/2023] [Revised: 11/13/2023] [Accepted: 11/22/2023] [Indexed: 12/08/2023]
Abstract
The establishment of moss spores is considered a milestone in plant evolution. They harbor protein networks underpinning desiccation tolerance and accumulation of storage compounds that can be found already in algae and that are also utilized in seeds and pollen. Furthermore, germinating spores must produce proteins that drive the transition through heterotrophic growth to the autotrophic plant. To get insight into the plasticity of this proteome, we investigated it at five timepoints of moss (Physcomitrium patens) spore germination and in protonemata and gametophores. The comparison to previously published Arabidopsis proteome data of seedling establishment showed that not only the proteomes of spores and seeds are functionally related, but also the proteomes of germinating spores and young seedlings. We observed similarities with regard to desiccation tolerance, lipid droplet proteome composition, control of dormancy, and β-oxidation and the glyoxylate cycle. However, there were also striking differences. For example, spores lacked any obvious storage proteins. Furthermore, we did not detect homologs to the main triacylglycerol lipase in Arabidopsis seeds, SUGAR DEPENDENT1. Instead, we discovered a triacylglycerol lipase of the oil body lipase family and a lipoxygenase as being the overall most abundant proteins in spores. This finding indicates an alternative pathway for triacylglycerol degradation via oxylipin intermediates in the moss. The comparison of spores to Nicotiana tabacum pollen indicated similarities for example in regards to resistance to desiccation and hypoxia, but the overall developmental pattern did not align as in the case of seedling establishment and spore germination.
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Affiliation(s)
- Lea Hembach
- Green Biotechnology, Institute of Plant Biology and Biotechnology (IBBP), University of Münster, 48143, Münster, Germany
| | - Philipp W Niemeyer
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences and Göttingen Center for Molecular Biosciences (GZMB), University of Göttingen, 37077, Göttingen, Germany
| | - Kerstin Schmitt
- Department for Molecular Microbiology and Genetics, Genetics and Göttingen Center for Molecular Biosciences (GZMB) and Service Unit LCMS Protein Analytics, Institute for Microbiology, University of Göttingen, 37077, Göttingen, Germany
| | - Jaccoline M S Zegers
- Department of Applied Bioinformatics, Göttingen Center for Molecular Biosciences (GZMB) and Campus Institute Data Science (CIDAS), Institute for Microbiology and Genetics, University of Göttingen, 37077, Göttingen, Germany
| | - Patricia Scholz
- Laboratoire Reproduction et Développement des Plantes (RDP), UCB Lyon 1, CNRS, INRAE, Université de Lyon, ENS de Lyon, Lyon, France
| | - Dennis Brandt
- Plant Energy Biology, Institute of Plant Biology and Biotechnology (IBBP), University of Münster, 48143, Münster, Germany
| | - Janis J Dabisch
- Green Biotechnology, Institute of Plant Biology and Biotechnology (IBBP), University of Münster, 48143, Münster, Germany
| | - Oliver Valerius
- Department for Molecular Microbiology and Genetics, Genetics and Göttingen Center for Molecular Biosciences (GZMB) and Service Unit LCMS Protein Analytics, Institute for Microbiology, University of Göttingen, 37077, Göttingen, Germany
| | - Gerhard H Braus
- Department for Molecular Microbiology and Genetics, Genetics and Göttingen Center for Molecular Biosciences (GZMB) and Service Unit LCMS Protein Analytics, Institute for Microbiology, University of Göttingen, 37077, Göttingen, Germany
| | - Markus Schwarzländer
- Plant Energy Biology, Institute of Plant Biology and Biotechnology (IBBP), University of Münster, 48143, Münster, Germany
| | - Jan de Vries
- Department of Applied Bioinformatics, Göttingen Center for Molecular Biosciences (GZMB) and Campus Institute Data Science (CIDAS), Institute for Microbiology and Genetics, University of Göttingen, 37077, Göttingen, Germany
| | - Stefan A Rensing
- Plant Cell Biology, Department of Biology, University of Marburg, Marburg, Germany
- BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg, Germany
| | - Till Ischebeck
- Green Biotechnology, Institute of Plant Biology and Biotechnology (IBBP), University of Münster, 48143, Münster, Germany
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences and Göttingen Center for Molecular Biosciences (GZMB), University of Göttingen, 37077, Göttingen, Germany
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13
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Zhang X, Ekwealor JTB, Mishler BD, Silva AT, Yu L, Jones AK, Nelson ADL, Oliver MJ. Syntrichia ruralis: emerging model moss genome reveals a conserved and previously unknown regulator of desiccation in flowering plants. THE NEW PHYTOLOGIST 2024. [PMID: 38415863 DOI: 10.1111/nph.19620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/05/2024] [Indexed: 02/29/2024]
Abstract
Water scarcity, resulting from climate change, poses a significant threat to ecosystems. Syntrichia ruralis, a dryland desiccation-tolerant moss, provides valuable insights into survival of water-limited conditions. We sequenced the genome of S. ruralis, conducted transcriptomic analyses, and performed comparative genomic and transcriptomic analyses with existing genomes and transcriptomes, including with the close relative S. caninervis. We took a genetic approach to characterize the role of an S. ruralis transcription factor, identified in transcriptomic analyses, in Arabidopsis thaliana. The genome was assembled into 12 chromosomes encompassing 21 169 protein-coding genes. Comparative analysis revealed copy number and transcript abundance differences in known desiccation-associated gene families, and highlighted genome-level variation among species that may reflect adaptation to different habitats. A significant number of abscisic acid (ABA)-responsive genes were found to be negatively regulated by a MYB transcription factor (MYB55) that was upstream of the S. ruralis ortholog of ABA-insensitive 3 (ABI3). We determined that this conserved MYB transcription factor, uncharacterized in Arabidopsis, acts as a negative regulator of an ABA-dependent stress response in Arabidopsis. The new genomic resources from this emerging model moss offer novel insights into how plants regulate their responses to water deprivation.
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Affiliation(s)
- Xiaodan Zhang
- The Boyce Thompson Institute, Cornell University, Ithaca, NY, 14853, USA
| | - Jenna T B Ekwealor
- Department of Biology, Utah State University, Logan, UT, 84322, USA
- Department of Biology, San Francisco State University, San Francisco, CA, 94132, USA
| | - Brent D Mishler
- University and Jepson Herbaria, Berkeley, CA, 94720-2465, USA
- Department of Integrative Biology, University of California, Berkeley, CA, 94720-2465, USA
| | | | - Li'ang Yu
- The Boyce Thompson Institute, Cornell University, Ithaca, NY, 14853, USA
| | - Andrea K Jones
- The Boyce Thompson Institute, Cornell University, Ithaca, NY, 14853, USA
| | - Andrew D L Nelson
- The Boyce Thompson Institute, Cornell University, Ithaca, NY, 14853, USA
| | - Melvin J Oliver
- Division of Plant Sciences and Technology and Interdisciplinary Plant Group, University of Missouri, Columbia, MO, 65211, USA
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14
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Djilianov D, Moyankova D, Mladenov P, Topouzova-Hristova T, Kostadinova A, Staneva G, Zasheva D, Berkov S, Simova-Stoilova L. Resurrection Plants-A Valuable Source of Natural Bioactive Compounds: From Word-of-Mouth to Scientifically Proven Sustainable Use. Metabolites 2024; 14:113. [PMID: 38393005 PMCID: PMC10890500 DOI: 10.3390/metabo14020113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/25/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
Resurrection plant species are a group of higher plants whose vegetative tissues are able to withstand long periods of almost full desiccation and recover quickly upon rewatering. Apart from being a model system for studying desiccation tolerance, resurrection plant species appear to be a valuable source of metabolites, with various areas of application. A significant number of papers have been published in recent years with respect to the extraction and application of bioactive compounds from higher resurrection plant species in various test systems. Promising results have been obtained with respect to antioxidative and antiaging effects in various test systems, particularly regarding valuable anticancer effects in human cell lines. Here, we review the latest advances in the field and propose potential mechanisms of action of myconoside-a predominant secondary compound in the European members of the Gesneriaceae family. In addition, we shed light on the possibilities for the sustainable use of natural products derived from resurrection plants.
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Affiliation(s)
- Dimitar Djilianov
- Agrobioinstitute, Agricultural Academy, 8 Dragan Tzankov Blvd., 1164 Sofia, Bulgaria
| | - Daniela Moyankova
- Agrobioinstitute, Agricultural Academy, 8 Dragan Tzankov Blvd., 1164 Sofia, Bulgaria
| | - Petko Mladenov
- Agrobioinstitute, Agricultural Academy, 8 Dragan Tzankov Blvd., 1164 Sofia, Bulgaria
| | - Tanya Topouzova-Hristova
- Faculty of Biology, Sofia University 'St. Kliment Ohridski', 8 Dragan Tzankov Blvd., 1164 Sofia, Bulgaria
| | - Aneliya Kostadinova
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Street, Bl. 21, 1113 Sofia, Bulgaria
| | - Galya Staneva
- Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Street, Bl. 21, 1113 Sofia, Bulgaria
| | - Diana Zasheva
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences, Tsarigradsko Shosse, 73, 1113 Sofia, Bulgaria
| | - Strahil Berkov
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 23 Acad. Georgi Bonchev Street, 1113 Sofia, Bulgaria
| | - Lyudmila Simova-Stoilova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, 21 Bldg. Acad. Georgi Bonchev Street, 1113 Sofia, Bulgaria
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15
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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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16
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Ujaoney AK, Anaganti N, Padwal MK, Basu B. Tracing the serendipitous genesis of radiation resistance. Mol Microbiol 2024; 121:142-151. [PMID: 38082498 DOI: 10.1111/mmi.15208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 11/01/2023] [Accepted: 11/27/2023] [Indexed: 01/15/2024]
Abstract
Free-living organisms frequently encounter unfavorable abiotic environmental factors. Those who adapt and cope with sudden changes in the external environment survive. Desiccation is one of the most common and frequently encountered stresses in nature. On the contrary, ionizing radiations are limited to high local concentrations of naturally occurring radioactive materials and related anthropogenic activities. Yet, resistance to high doses of ionizing radiation is evident across the tree of life. The evolution of desiccation resistance has been linked to the evolution of ionizing radiation resistance, although, evidence to support the idea that the evolution of desiccation tolerance is a necessary precursor to ionizing radiation resistance is lacking. Moreover, the presence of radioresistance in hyperthermophiles suggests multiple paths lead to radiation resistance. In this minireview, we focus on the molecular aspects of damage dynamics and damage response pathways comprising protective and restorative functions with a definitive survival advantage, to explore the serendipitous genesis of ionizing radiation resistance.
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Affiliation(s)
- Aman Kumar Ujaoney
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India
| | - Narasimha Anaganti
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Mahesh Kumar Padwal
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Bhakti Basu
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
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17
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Salih H, Bai W, Liang Y, Yang R, Zhao M, Muhammd SM, Zhang D, Li X. ROS scavenging enzyme-encoding genes play important roles in the desert moss Syntrichia caninervis response to extreme cold and desiccation stresses. Int J Biol Macromol 2024; 254:127778. [PMID: 37926320 DOI: 10.1016/j.ijbiomac.2023.127778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/14/2023] [Accepted: 10/27/2023] [Indexed: 11/07/2023]
Abstract
Abiotic stress is one of the major environmental constraints limiting plant growth. Syntrichia caninervis is one of the unique plant models that can cope with harsh environments. Reactive oxygen species (ROS) are a vital signaling molecule for protecting plants from oxidative stress, but research on ROS in S. caninervis is limited. Here, we identified 112 ROS genes in S. caninervis, including 40 GSTs, 51 PODs, 9 SODs, 6 CATs, 3 GPXs and 3 APXs families. GO and KEGG analyses showed that ROS genes are involved in responses to various stimuli and phenylpropanoid biosynthesis. ROS genes contain many stress-responsive and hormonal cis-elements in their promoter regions. More ROS genes were induced by cold stress than desiccation stress, and both conditions changed the transcript abundances of several ROS genes. CAT and POD, H2O2, MDA, and GSH were also induced under biotic stress, specifically CAT activity. The results indicated that the ScCAT genes and their activities could be strongly associated with the regulation of ROS production. This is the first systematic identification of ROS genes in S. caninervis and our findings contribute to further research into the roles of ScROS adjustment under abiotic stress while also providing excellent genetic resources for plant breeding.
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Affiliation(s)
- Haron Salih
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China
| | - Wenwan Bai
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuqing Liang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China
| | - RuiRui Yang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingqi Zhao
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Surayya Mustapha Muhammd
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China
| | - Daoyuan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China
| | - Xiaoshuang Li
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China; Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830000 Urumqi, China.
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18
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Rodrigues GAG, Mauve C, Gakiere B, Bailly C, Steiner N. The metabolic profiles of Eugenia astringens and E. uniflora (Myrtaceae) sensitive seeds affect desiccation. PHYSIOLOGIA PLANTARUM 2024; 176:e14220. [PMID: 38356368 DOI: 10.1111/ppl.14220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/16/2024]
Abstract
Myrtaceae species are abundant in tropical Atlantic rainforests, but 41% of the 5500 species of this family are of extreme conservation concern. Eugenia astringens and E. uniflora are native Brazilian Myrtaceae species that occur in the same habitats and produce desiccation-sensitive (DS) seeds. We hypothesized that their seed desiccation-sensitivity degree is associated with specific metabolic signatures. To test it, we analyzed the germination and metabolic profiles of fresh and desiccated seeds. The water content (WC) at which at least half of the seeds survived desiccation was lower in E. astringens (0.17 g H2 O g-1 DW) than in E. uniflora (0.41 g H2 O g-1 DW). We identified 103 annotated metabolites from 3261 peaks in both species, which differed in their relative contents between E. astringens and E. uniflora seeds. The main differences in seed metabolic profiles include several protective molecules in the group of carbohydrates and organic acids and amino acid contents. The relative contents of monosaccharides and disaccharides, malic and quinic acids, amino acids and saturated fatty acids may have taken part in the distinct DS behaviour of E. astringens and E. uniflora seeds. Our study provides evidence of the relationship between desiccation sensitivity, seed viability and metabolic profile of tropical seeds by comparing two closely related Eugenia species with different DS degrees.
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Affiliation(s)
| | - Caroline Mauve
- Institute of Plant Sciences Paris-Saclay (IPS2), UMR 9213/UMR1403, CNRS, INRA, Université d'Evry, Université Paris-Diderot, Université Paris-Sud, Sorbonne Paris-Cité, Saclay Plant Sciences, Orsay, France
| | - Bertrand Gakiere
- Institute of Plant Sciences Paris-Saclay (IPS2), UMR 9213/UMR1403, CNRS, INRA, Université d'Evry, Université Paris-Diderot, Université Paris-Sud, Sorbonne Paris-Cité, Saclay Plant Sciences, Orsay, France
| | - Christophe Bailly
- Laboratoire de Biologie du Développement, Sorbonne Université, CNRS, Paris, France
| | - Neusa Steiner
- Plant Physiology Lab, Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
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19
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Mladenov P, Wang X, Yang Z, Djilianov D, Deng X. Dynamics of chromatin accessibility and genome wide control of desiccation tolerance in the resurrection plant Haberlea rhodopensis. BMC PLANT BIOLOGY 2023; 23:654. [PMID: 38110858 PMCID: PMC10729425 DOI: 10.1186/s12870-023-04673-2] [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: 10/02/2023] [Accepted: 12/08/2023] [Indexed: 12/20/2023]
Abstract
BACKGROUND Drought is one of the main consequences of global climate change and this problem is expected to intensify in the future. Resurrection plants evolved the ability to withstand the negative impact of long periods of almost complete desiccation and to recover at rewatering. In this respect, many physiological, transcriptomic, proteomic and genomic investigations have been performed in recent years, however, few epigenetic control studies have been performed on these valuable desiccation-tolerant plants so far. RESULTS In the present study, for the first time for resurrection plants we provide evidences about the differential chromatin accessibility of Haberlea rhodopensis during desiccation stress by ATAC-seq (Assay for Transposase Accessible Chromatin with high-throughput sequencing). Based on gene similarity between species, we used the available genome of the closely related resurrection plant Dorcoceras hygrometricum to identify approximately nine hundred transposase hypersensitive sites (THSs) in H. rhodopensis. The majority of them corresponds to proximal and distal regulatory elements of different genes involved in photosynthesis, carbon metabolism, synthesis of secondary metabolites, cell signalling and transcriptional regulation, cell growth, cell wall, stomata conditioning, chaperons, oxidative stress, autophagy and others. Various types of binding motifs recognized by several families of transcription factors have been enriched from the THSs found in different stages of drought. Further, we used the previously published RNA-seq data from H. rhodopensis to evaluate the expression of transcription factors putatively interacting with the enriched motifs, and the potential correlation between the identified THS and the expression of their corresponding genes. CONCLUSIONS These results provide a blueprint for investigating the epigenetic regulation of desiccation tolerance in resurrection plant H. rhodopensis and comparative genomics between resurrection and non-resurrection species with available genome information.
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Affiliation(s)
- Petko Mladenov
- State Key Laboratory of Plant Diversity and Specialty Crops, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
- Agricultural Academy, 8 Dragan Tzankov Blvd, 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
| | - Zhaolin Yang
- 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
- University of Chinese Academy of Sciences, Beijing, 100049, 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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20
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Yang Q, Yang R, Gao B, Liang Y, Liu X, Li X, Zhang D. Metabolomic Analysis of the Desert Moss Syntrichia caninervis Provides Insights into Plant Dehydration and Rehydration Response. PLANT & CELL PHYSIOLOGY 2023; 64:1419-1432. [PMID: 37706231 DOI: 10.1093/pcp/pcad110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 09/13/2023] [Indexed: 09/15/2023]
Abstract
Desiccation-tolerant (DT) plants can survive extreme dehydration and tolerate the loss of up to 95% of their water content, making them ideal systems to determine the mechanism behind extreme drought stress and identify potential approaches for developing drought-tolerant crops. The desert moss Syntrichia caninervis is an emerging model for extreme desiccation tolerance that has benefited from high-throughput sequencing analyses, allowing identification of stress-tolerant genes; however, its metabolic response to desiccation is unknown. A liquid chromatography-mass spectrometry analysis of S. caninervis at six dehydration-rehydration stages revealed 912 differentially abundant compounds, belonging to 93 metabolic classes. Many (256) metabolites accumulated during rehydration in S. caninervis, whereas only 71 accumulated during the dehydration period, in contrast to the pattern observed in vascular DT plants. During dehydration, nitrogenous amino acids (l-glutamic acid and cysteinylglycine), alkaloids (vinleurosine) and steroids (physalin D) accumulated, whereas glucose 6-phosphate decreased. During rehydration, γ-aminobutyric acid, glucose 6-phosphate and flavonoids (karanjin and aromadendrin) accumulated, as did the plant hormones 12-oxo phytodienoic acid (12-OPDA) and trans-zeatin riboside. The contents ofl-arginine, maltose, turanose, lactulose and sucrose remained high throughout dehydration-rehydration. Syntrichia caninervis thus accumulates antioxidants to scavenge reactive oxygen species, accumulating nitrogenous amino acids and cytoprotective metabolites and decreasing energy metabolism to enter a protective state from dehydration-induced damage. During subsequent rehydration, many metabolites rapidly accumulated to prevent oxidative stress and restore physiological activities while repairing cells, representing a more elaborate rehydration repair mechanism than vascular DT plants, with a faster and greater accumulation of metabolites. This metabolic kinetics analysis in S. caninervis deepens our understanding of its dehydration mechanisms and provides new insights into the different strategies of plant responses to dehydration and rehydration.
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Affiliation(s)
- Qilin Yang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ruirui Yang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bei Gao
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Beijing 830011, China
| | - Yuqing Liang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Beijing 830011, China
| | - Xiujin Liu
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Beijing 830011, China
| | - Xiaoshuang Li
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Beijing 830011, China
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, Beijing 838008, China
| | - Daoyuan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
- Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Beijing 830011, China
- Turpan Eremophytes Botanical Garden, Chinese Academy of Sciences, Turpan, Beijing 838008, China
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21
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Okemo PA, Njaci I, Kim YM, McClure RS, Peterson MJ, Beliaev AS, Hixson KK, Mundree S, Williams B. Tripogon loliiformis tolerates rapid desiccation after metabolic and transcriptional priming during initial drying. Sci Rep 2023; 13:20613. [PMID: 37996547 PMCID: PMC10667271 DOI: 10.1038/s41598-023-47456-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023] Open
Abstract
Crop plants and undomesticated resilient species employ different strategies to regulate their energy resources and growth. Most crop species are sensitive to stress and prioritise rapid growth to maximise yield or biomass production. In contrast, resilient plants grow slowly, are small, and allocate their resources for survival in challenging environments. One small group of plants, termed resurrection plants, survive desiccation of their vegetative tissue and regain full metabolic activity upon watering. However, the precise molecular mechanisms underlying this extreme tolerance remain unknown. In this study, we employed a transcriptomics and metabolomics approach, to investigate the mechanisms of desiccation tolerance in Tripogon loliiformis, a modified desiccation-tolerant plant, that survives gradual but not rapid drying. We show that T. loliiformis can survive rapid desiccation if it is gradually dried to 60% relative water content (RWC). Furthermore, the gene expression data showed that T. loliiformis is genetically predisposed for desiccation in the hydrated state, as evidenced by the accumulation of MYB, NAC, bZIP, WRKY transcription factors along with the phytohormones, abscisic acid, salicylic acid, amino acids (e.g., proline) and TCA cycle sugars during initial drying. Through network analysis of co-expressed genes, we observed differential responses to desiccation between T. loliiformis shoots and roots. Dehydrating shoots displayed global transcriptional changes across broad functional categories, although no enrichment was observed during drying. In contrast, dehydrating roots showed distinct network changes with the most significant differences occurring at 40% RWC. The cumulative effects of the early stress responses may indicate the minimum requirements of desiccation tolerance and enable T. loliiformis to survive rapid drying. These findings potentially hold promise for identifying biotechnological solutions aimed at developing drought-tolerant crops without growth and yield penalties.
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Affiliation(s)
- Pauline A Okemo
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD, Australia
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, Brisbane, QLD, Australia
| | - Isaac Njaci
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD, Australia
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
| | - Young-Mo Kim
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Ryan S McClure
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - Alexander S Beliaev
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
- Physical and Chemical Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Kim K Hixson
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
- Physical and Chemical Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Sagadevan Mundree
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD, Australia
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia
| | - Brett Williams
- School of Biology and Environmental Science, Queensland University of Technology, Brisbane, QLD, Australia.
- Centre for Agriculture and the Bioeconomy, Queensland University of Technology, Brisbane, QLD, Australia.
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22
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Rieseberg TP, Dadras A, Bergschmidt LIN, Bierenbroodspot MJ, Fürst-Jansen JMR, Irisarri I, de Vries S, Darienko T, de Vries J. Divergent responses in desiccation experiments in two ecophysiologically different Zygnematophyceae. PHYSIOLOGIA PLANTARUM 2023; 175:e14056. [PMID: 38148198 DOI: 10.1111/ppl.14056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 12/28/2023]
Abstract
Water scarcity can be considered a major stressor on land, with desiccation being its most extreme form. Land plants have found two different solutions to this challenge: avoidance and tolerance. The closest algal relatives to land plants, the Zygnematophyceae, use the latter, and how this is realized is of great interest for our understanding of the conquest of land. Here, we worked with two representatives of the Zygnematophyceae, Zygnema circumcarinatum SAG 698-1b and Mesotaenium endlicherianum SAG 12.97, who differ in habitats and drought resilience. We challenged both algal species with severe desiccation in a laboratory setup until photosynthesis ceased, followed by a recovery period. We assessed their morphological, photophysiological, and transcriptomic responses. Our data pinpoint global differential gene expression patterns that speak of conserved responses, from calcium-mediated signaling to the adjustment of plastid biology, cell envelopes, and amino acid pathways, between Zygnematophyceae and land plants despite their strong ecophysiological divergence. The main difference between the two species appears to rest in a readjustment of the photobiology of Zygnema, while Mesotaenium experiences stress beyond a tipping point.
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Affiliation(s)
- Tim P Rieseberg
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Armin Dadras
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Luisa I N Bergschmidt
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Maaike J Bierenbroodspot
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Janine M R Fürst-Jansen
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Iker Irisarri
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
- Section Phylogenomics, Centre for Molecular Biodiversity Research, Leibniz Institute for the Analysis of Biodiversity Change (LIB), Museum of Nature, Hamburg, Germany
| | - Sophie de Vries
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Tatyana Darienko
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
| | - Jan de Vries
- Department of Applied Bioinformatics, University of Goettingen, Institute of Microbiology and Genetics, Goettingen, Germany
- Campus Institute Data Science (CIDAS), University of Goettingen, Goettingen, Germany
- Goettingen Center for Molecular Biosciences (GZMB), Department of Applied Bioinformatics, University of Goettingen, Goettingen, Germany
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23
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Dace HJW, Reus R, Ricco CR, Hall R, Farrant JM, Hilhorst HWM. A horizontal view of primary metabolomes in vegetative desiccation tolerance. PHYSIOLOGIA PLANTARUM 2023; 175:e14109. [PMID: 38148236 DOI: 10.1111/ppl.14109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 12/28/2023]
Abstract
Vegetative desiccation tolerance (VDT), the ability of such tissues to survive the near complete loss of cellular water, is a rare but polyphyletic phenotype. It is a complex multifactorial trait, typified by universal (core) factors but with many and varied adaptations due to plant architecture, biochemistry and biotic/abiotic dynamics of particular ecological niches. The ability to enter into a quiescent biophysically stable state is what ultimately determines desiccation tolerance. Thus, understanding the metabolomic complement of plants with VDT gives insight into the nature of survival as well as evolutionary aspects of VDT. In this study, we measured the soluble carbohydrate profiles and the polar, TMS-derivatisable metabolomes of 7 phylogenetically diverse species with VDT, in contrast with two desiccation sensitive (DS) species, under conditions of full hydration, severe water deficit stress, and desiccation. Our study confirmed the existence of core mechanisms of VDT systems associated with either constitutively abundant trehalose or the accumulation of raffinose family oligosaccharides and sucrose, with threshold ratios conditioned by other features of the metabolome. DS systems did not meet these ratios. Considerable chemical variations among VDT species suggest that co-occurring but distinct stresses (e.g., photooxidative stress) are dealt with using different chemical regimes. Furthermore, differences in the timing of metabolic shifts suggest there is not a single "desiccation programme" but that subprocesses are coordinated differently at different drying phases. There are likely to be constraints on the composition of a viable dry state and how different adaptive strategies interact with the biophysical constraints of VDT.
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Affiliation(s)
- Halford J W Dace
- Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, The Netherlands
| | - Robbin Reus
- Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, The Netherlands
| | - Celeste Righi Ricco
- Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, The Netherlands
| | - Robert Hall
- Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, The Netherlands
- Business Unit Bioscience, Wageningen University & Research, Wageningen, The Netherlands
| | - Jill M Farrant
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town, South Africa
| | - Henk W M Hilhorst
- Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, The Netherlands
- Department of Molecular and Cell Biology, University of Cape Town, Cape Town, South Africa
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24
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Holzinger A, Plag N, Karsten U, Glaser K. Terrestrial Trentepohlia sp. (Ulvophyceae) from alpine and coastal collection sites show strong desiccation tolerance and broad light and temperature adaptation. PROTOPLASMA 2023; 260:1539-1553. [PMID: 37291393 PMCID: PMC10590310 DOI: 10.1007/s00709-023-01866-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 05/20/2023] [Indexed: 06/10/2023]
Abstract
For the present study, we collected the Ulvophyceae species Trentepohlia aurea from limestone rock near Berchtesgaden, Germany, and the closely related taxa T. umbrina from Tilia cordata tree bark and T. jolithus from concrete wall both in Rostock, Germany. Freshly sampled material stained with Auramine O, DIOC6, and FM 1-43 showed an intact physiological status. Cell walls were depicted with calcofluor white and Carbotrace. When subjected to three repeated and controlled cycles of desiccation over silica gel (~ 10% relative humidity) followed by rehydration, T. aurea recovered about 50% of the initial photosynthetic yield of photosystem II (YII). In contrast, T. umbrina and T. jolithus recovered to 100% of the initial YII. HPLC and GC analysis of compatible solutes found highest proportions of erythritol in T. umbrina and mannitol/arabitol in T. jolithus. The lowest total compatible solute concentrations were detected in T. aurea, while the C/N ratio was highest in this species, indicative of nitrogen limitation. The prominent orange to red coloration of all Trentepohlia was due to extremely high carotenoid to Chl a ratio (15.9 in T. jolithus, 7.8 in T. aurea, and 6.6. in T. umbrina). Photosynthetic oxygen production was positive up to ~ 1500 µmol photons m-2 s-1 with the highest Pmax and alpha values in T. aurea. All strains showed a broad temperature tolerance with optima for gross photosynthesis between 20 and 35 °C. The presented data suggest that all investigated Trentepohlia species are well adapted to their terrestrial lifestyle on exposed to sunlight on a vertical substrate with little water holding capacity. Nevertheless, the three Trentepohlia species differed concerning their desiccation tolerance and compatible solute concentrations. The lower compatible solute contents in T. aurea explain the incomplete recovery of YII after rehydration.
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Affiliation(s)
- Andreas Holzinger
- Department of Botany, University of Innsbruck, Sternwartestrasse 15, 6020, Innsbruck, Austria.
| | - Niklas Plag
- Applied Phycology and Ecology, University of Rostock, Albert Einstein Strasse 3, 18059, Rostock, Germany
| | - Ulf Karsten
- Applied Phycology and Ecology, University of Rostock, Albert Einstein Strasse 3, 18059, Rostock, Germany
| | - Karin Glaser
- Applied Phycology and Ecology, University of Rostock, Albert Einstein Strasse 3, 18059, Rostock, Germany
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25
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Arzac MI, Miranda-Apodaca J, Gasulla F, Arce-Guerrero M, Fernández-Marín B, García-Plazaola JI. Acquisition of Desiccation Tolerance Unveiled: Polar Lipid Profiles of Streptophyte Algae Offer Insights. PHYSIOLOGIA PLANTARUM 2023; 175:e14073. [PMID: 38148218 DOI: 10.1111/ppl.14073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 10/16/2023] [Accepted: 10/20/2023] [Indexed: 12/28/2023]
Abstract
Terrestrialization by photosynthetic eukaryotes took place in the two branches of green microalgae: Chlorophyta and Charophyta. Within the latter, the paraphyletic streptophytic algae divide into two clades. These are named Klebsormidiophyceae-Chlorokybophyceae-Mesostigmatophyceae (KCM), which is the oldest, and Zygnematophyceae-Coleochaetophyceae-Charophyceae (ZCC), which contains the closest relatives of vascular plants. Terrestrialization required the emergence of adaptations in response to new challenges, such as irradiance, temperature oscillations and water deprivation. In this study, we evaluated lipid composition in species representative of distinct phylogenetic clusters within Charophyta and Chlorophyta. We aim to study whether the inherent thylakoid lipid composition, as well as its adaptability in response to desiccation, were fundamental factors for the evolutionary history of terrestrial plants. The results showed that the lipid composition was similar to that found in flowering land plants, differing only in betaine lipids. Likewise, the largest constitutive pool of oligogalactolipids (OGL) was found only in the fully desiccation-tolerant species Klebsormidium nitens. After desiccation, the content of polar lipids decreased in all species. Conversely, the content of OGL increased, particularly trigalactosyldiacylglycerol and tetragalactosyldiacylglycerol in the ZCC clade. The analysis of the molecular species composition of the newly formed OGL may suggest a different biosynthetic route for the KCM and ZCC clades. We speculate that the appearance of a new OGL synthesis pathway, which eventually arose during the streptophyte evolutionary process, endowed algae with a much more dynamic regulation of thylakoid composition in response to stress, which ultimately contributed to the colonization of terrestrial habitats.
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Affiliation(s)
- Miren Irati Arzac
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Jon Miranda-Apodaca
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | | | - María Arce-Guerrero
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Beatriz Fernández-Marín
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain
- Department of Botany, Ecology and Plant Physiology, University of La Laguna (ULL), La Laguna, Canary Islands, Spain
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26
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Del Campo EM, Gasulla F, Hell AF, González-Hourcade M, Casano LM. Comparative Transcriptomic and Proteomic Analyses Provide New Insights into the Tolerance to Cyclic Dehydration in a Lichen Phycobiont. MICROBIAL ECOLOGY 2023; 86:1725-1739. [PMID: 37039841 PMCID: PMC10497648 DOI: 10.1007/s00248-023-02213-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 03/22/2023] [Indexed: 06/19/2023]
Abstract
Desiccation tolerance (DT) is relatively frequent in non-vascular plants and green algae. However, it is poorly understood how successive dehydration/rehydration (D/R) cycles shape their transcriptomes and proteomes. Here, we report a comprehensive analysis of adjustments on both transcript and protein profiles in response to successive D/R cycles in Coccomyxa simplex (Csol), isolated from the lichen Solorina saccata. A total of 1833 transcripts and 2332 proteins were differentially abundant as a consequence of D/R; however, only 315 of these transcripts/proteins showed similar trends. Variations in both transcriptomes and proteomes along D/R cycles together with functional analyses revealed an extensive decrease in transcript and protein levels during dehydration, most of them involved in gene expression, metabolism, substance transport, signalling and folding catalysis, among other cellular functions. At the same time, a series of protective transcripts/proteins, such as those related to antioxidant defence, polyol metabolism and autophagy, was upregulated during dehydration. Overall, our results show a transient decrease in most cellular functions as a result of drying and a gradual reactivation of specific cell processes to accommodate the hydration status along successive D/R cycles. This study provides new insights into key mechanisms involved in the DT of Csol and probably other dehydration-tolerant microalgae. In addition, functionally characterising the high number of genes/proteins of unknown functions found in this study may lead to the discovery of new DT mechanisms.
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Affiliation(s)
- Eva M Del Campo
- Department of Life Sciences, University of Alcalá, 28805, Alcalá de Henares (Madrid), Spain.
| | - Francisco Gasulla
- Department of Life Sciences, University of Alcalá, 28805, Alcalá de Henares (Madrid), Spain
| | - Aline F Hell
- Department of Life Sciences, University of Alcalá, 28805, Alcalá de Henares (Madrid), Spain
- Centre of Natural Sciences and Humanities, Federal University of ABC, 09606-070, São Bernardo Do Campo, SP, Brazil
| | - María González-Hourcade
- Department of Life Sciences, University of Alcalá, 28805, Alcalá de Henares (Madrid), Spain
- Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, 90183, Umeå, Sweden
| | - Leonardo M Casano
- Department of Life Sciences, University of Alcalá, 28805, Alcalá de Henares (Madrid), Spain
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Nadal M, Carriquí M, Badel E, Cochard H, Delzon S, King A, Lamarque LJ, Flexas J, Torres-Ruiz JM. Photosynthesis, leaf hydraulic conductance and embolism dynamics in the resurrection plant Barbacenia purpurea. PHYSIOLOGIA PLANTARUM 2023; 175:e14035. [PMID: 37882305 DOI: 10.1111/ppl.14035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/17/2023] [Accepted: 09/15/2023] [Indexed: 10/27/2023]
Abstract
The main parameters determining photosynthesis are stomatal and mesophyll conductance and electron transport rate, and for hydraulic dynamics they are leaf hydraulic conductance and the spread of embolism. These parameters have scarcely been studied in desiccation-tolerant (resurrection) plants exposed to drought. Here, we characterized photosynthesis and hydraulics during desiccation and rehydration in a poikilochlorophyllous resurrection plant, Barbacenia purpurea (Velloziaceae). Gas exchange, chlorophyll fluorescence, and leaf water status were monitored along the whole dehydration-rehydration cycle. Simultaneously, embolism formation and hydraulic functioning recovery were measured at leaf level using micro-computed tomography imaging. Photosynthesis and leaf hydraulic conductance ceased at relatively high water potential (-1.28 and -1.54 MPa, respectively), whereas the onset of leaf embolism occurred after stomatal closure and photosynthesis cessation (<-1.61 MPa). This sequence of physiological processes during water stress may be associated with the need to delay dehydration, to prepare the molecular changes required in the desiccated state. Complete rehydration occurred rapidly in the mesophyll, whereas partial xylem refilling, and subsequent recovery of photosynthesis, occurred at later stages after rewatering. These results highlight the importance of stomata as safety valves to protect the vascular system from embolism, even in a plant able to fully recover after complete embolism.
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Affiliation(s)
- Miquel Nadal
- Departamento de Sistemas Agrícolas, Forestales y Medio Ambiente, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Zaragoza, Spain
- Research Group on Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears (UIB), Institut d'Investigacions Agroambientals i d'Economia de l'Aigua (INAGEA), Palma, Illes Balears, Spain
| | - Marc Carriquí
- Research Group on Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears (UIB), Institut d'Investigacions Agroambientals i d'Economia de l'Aigua (INAGEA), Palma, Illes Balears, Spain
- Instituto de Ciencias Forestales (ICIFOR-INIA), CSIC, Madrid, Spain
| | - Eric Badel
- Université Clermont-Auvergne, INRAE, PIAF, Clermont-Ferrand, France
| | - Hervé Cochard
- Université Clermont-Auvergne, INRAE, PIAF, Clermont-Ferrand, France
| | | | - Andrew King
- Synchrotron Source Optimisée de Lumière d'Energie Intermédiaire du LURE, L'Orme de Merisiers, France
| | | | - Jaume Flexas
- Research Group on Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears (UIB), Institut d'Investigacions Agroambientals i d'Economia de l'Aigua (INAGEA), Palma, Illes Balears, Spain
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Silva AMM, Feiler HP, Lacerda-Júnior GV, Fernandes-Júnior PI, de Tarso Aidar S, de Araújo VAVP, Matteoli FP, de Araújo Pereira AP, de Melo IS, Cardoso EJBN. Arbuscular mycorrhizal fungi associated with the rhizosphere of an endemic terrestrial bromeliad and a grass in the Brazilian neotropical dry forest. Braz J Microbiol 2023; 54:1955-1967. [PMID: 37410249 PMCID: PMC10485230 DOI: 10.1007/s42770-023-01058-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 06/19/2023] [Indexed: 07/07/2023] Open
Abstract
Arbuscular mycorrhizal fungi form symbiotic associations with 80-90% of all known plants, allowing the fungi to acquire plant-synthesized carbon, and confer an increased capacity for nutrient uptake by plants, improving tolerance to abiotic and biotic stresses. We aimed at characterizing the mycorrhizal community in the rhizosphere of Neoglaziovia variegata (so-called `caroa`) and Tripogonella spicata (so-called resurrection plant), using high-throughput sequencing of the partial 18S rRNA gene. Both plants are currently undergoing a bioprospecting program to find microbes with the potential of helping plants tolerate water stress. Sampling was carried out in the Caatinga biome, a neotropical dry forest, located in northeastern Brazil. Illumina MiSeq sequencing of 37 rhizosphere samples (19 for N. variegata and 18 for T. spicata) revealed a distinct mycorrhizal community between the studied plants. According to alpha diversity analyses, T. spicata showed the highest richness and diversity based on the Observed ASVs and the Shannon index, respectively. On the other hand, N. variegata showed higher modularity of the mycorrhizal network compared to T. spicata. The four most abundant genera found (higher than 10%) were Glomus, Gigaspora, Acaulospora, and Scutellospora, with Glomus being the most abundant in both plants. Nonetheless, Gigaspora, Diversispora, and Ambispora were found only in the rhizosphere of N. variegata, whilst Scutellospora, Paraglomus, and Archaeospora were exclusive to the rhizosphere of T. spicata. Therefore, the community of arbuscular mycorrhizal fungi of the rhizosphere of each plant encompasses a unique composition, structure and modularity, which can differentially assist them in the hostile environment.
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Affiliation(s)
- Antonio Marcos Miranda Silva
- “Luiz de Queiroz” College of Agriculture, Soil Science Department, University of São Paulo, Piracicaba, São Paulo 13418-900 Brazil
| | | | | | | | - Saulo de Tarso Aidar
- Brazilian Agricultural Research Corporation, Embrapa Semiárido, Petrolina, , Pernambuco 56302-970 Brazil
| | | | - Filipe Pereira Matteoli
- Faculty of Sciences, Department of Biological Sciences, Laboratory of Microbial Bioinformatics, São Paulo State University, Bauru, 17033-360 Brazil
| | | | - Itamar Soares de Melo
- Brazilian Agricultural Research Corporation, Embrapa Meio Ambiente, Jaguariúna, São Paulo 13918-110 Brazil
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29
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Nadal M, Quintanilla LG, Pons-Perpinyà J, Lima VF, Gago J, Aranda I. Leaf structure and water relations of an allotetraploid Mediterranean fern and its diploid parents. PHYSIOLOGIA PLANTARUM 2023; 175:e14043. [PMID: 37882284 DOI: 10.1111/ppl.14043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 09/12/2023] [Accepted: 10/03/2023] [Indexed: 10/27/2023]
Abstract
Allopolyploidy is a common speciation mechanism in plants; however, its physiological and ecological consequences in niche partitioning have been scarcely studied. In this sense, leaf traits are good proxies to study the adaptive capacity of allopolyploids and diploid parents to their respective environmental conditions. In the present work, leaf water relations (assessed through pressure-volume curves) and structural and anatomical traits of the allotetraploid fern Oeosporangium tinaei and its diploid parents, Oeosporangium hispanicum and Oeosporangium pteridioides, were studied under controlled conditions in response to a water stress (WS) cycle. O. hispanicum showed the lowest osmotic potential at turgor loss point (πtlp ) and leaf capacitance, together with higher leaf mass per area (LMA), leaf thickness (LT), leaf density (LD), and leaf dry matter content (LDMC), whereas O. pteridioides presented the opposite set of traits (high πtlp and capacitance, and low LMA, LT, LD, and LDMC). O. tinaei showed an intermediate position for most of the studied traits. The responsiveness (osmotic and elastic adjustments) to WS was low, although most of the traits explained the segregation of the three species across a range of drought tolerance according to the rank: O. hispanicum > O. tinaei > O. pteridioides. These trait differences may underlie the niche segregation among coexisting populations of the three species in the Mediterranean basin.
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Affiliation(s)
- Miquel Nadal
- Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Departamento de Sistemas Agrícolas, Forestales y Medio Ambiente, Zaragoza, Spain
- Agro-Environmental and Water Economics Institute (INAGEA), University of the Balearic Islands, Palma de Mallorca, Spain
| | - Luis G Quintanilla
- School of Environmental Sciences and Technology (ESCET), University Rey Juan Carlos, Móstoles, Spain
| | - Joan Pons-Perpinyà
- Agro-Environmental and Water Economics Institute (INAGEA), University of the Balearic Islands, Palma de Mallorca, Spain
| | - Valéria F Lima
- LabPlant, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza, Ceará, Brazil
| | - Jorge Gago
- Agro-Environmental and Water Economics Institute (INAGEA), University of the Balearic Islands, Palma de Mallorca, Spain
| | - Ismael Aranda
- Institute of Forest Sciences, National Institute for Agricultural and Food Research and Technology, Spanish National Research Council (ICIFOR-INIA-CSIC), Madrid, Spain
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30
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Li X, Gao B, Wood AJ, Buitink J, Zhang D, Oliver MJ. Editorial: Desiccation tolerance in land plants: from mechanisms to evolution. FRONTIERS IN PLANT SCIENCE 2023; 14:1210946. [PMID: 37441176 PMCID: PMC10334818 DOI: 10.3389/fpls.2023.1210946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023]
Affiliation(s)
- Xiaoshuang Li
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Bei Gao
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
- Xinjiang Key Laboratory of Conservation and Utilization of Plant Gene Resources, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Andrew J. Wood
- Department of Plant Biology, Southern Illinois University-Carbondale, Carbondale, IL, United States
| | - Julia Buitink
- Université d’Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, Angers, France
| | - Daoyuan Zhang
- State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China
| | - Melvin J. Oliver
- Division of Plant Sciences and Technology, Interdisciplinary Plant Group, University of Missouri, Columbia, MO, United States
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Rehmani MS, Xian B, Wei S, He J, Feng Z, Huang H, Shu K. Seedling establishment: The neglected trait in the seed longevity field. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 200:107765. [PMID: 37209453 DOI: 10.1016/j.plaphy.2023.107765] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/05/2023] [Accepted: 05/13/2023] [Indexed: 05/22/2023]
Abstract
Seed longevity is a central actor in plant germplasm resource conservation, species reproduction, geographical distribution, crop yield and quality and food processing and safety. Seed longevity and vigor decrease gradually during storage, which directly influences seed germination and post-germination seedling establishment. It is noted that seedling establishment is a key shift from heterotropism to autotropism and is fueled by the energy reserved in the seeds per se. Numerous studies have demonstrated that expedited catabolism of triacylglycerols, fatty acid and sugars during seed storage is closely related to seed longevity. Storage of farm-saved seeds of elite cultivars for use in subsequent years is a common practice and it is recognized that aged seed (especially those stored under less-than-ideal conditions) can lead to poor seed germination, but the significance of poor seedling establishment as a separate factor capable of influencing crop yield has been overlooked. This review article summarizes the relationship between seed germination and seedling establishment and the effect of different seed reserves on seed longevity. Based on this, we emphasize the importance of simultaneous scoring of seedling establishment and germination percentage from aged seeds and discuss the reasons.
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Affiliation(s)
- Muhammad Saad Rehmani
- School of Environment and Ecology, Northwestern Polytechnical University, Xi'an, 710129, China
| | - BaoShan Xian
- School of Environment and Ecology, Northwestern Polytechnical University, Xi'an, 710129, China
| | - Shaowei Wei
- School of Environment and Ecology, Northwestern Polytechnical University, Xi'an, 710129, China; Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China
| | - Juan He
- School of Environment and Ecology, Northwestern Polytechnical University, Xi'an, 710129, China
| | - Zhenxin Feng
- School of Astronautics, Northwestern Polytechnical University, Xi'an, 710129, China
| | - He Huang
- School of Astronautics, Northwestern Polytechnical University, Xi'an, 710129, China.
| | - Kai Shu
- School of Environment and Ecology, Northwestern Polytechnical University, Xi'an, 710129, China; Research & Development Institute of Northwestern Polytechnical University in Shenzhen, Shenzhen, 518057, China.
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32
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Mihailova G, Gashi B, Krastev N, Georgieva K. Acquisition of Freezing Tolerance of Resurrection Species from Gesneriaceae, a Comparative Study. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091893. [PMID: 37176950 PMCID: PMC10180725 DOI: 10.3390/plants12091893] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/28/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023]
Abstract
Resurrection plants have the unique ability to restore normal physiological activity after desiccation to an air-dry state. In addition to their desiccation tolerance, some of them, such as Haberlea rhodopensis and Ramonda myconi, are also freezing-tolerant species, as they survive subzero temperatures during winter. Here, we compared the response of the photosynthetic apparatus of two other Gesneriaceae species, Ramonda serbica and Ramonda nathaliae, together with H. rhodopensis, to cold and freezing temperatures. The role of some protective proteins in freezing tolerance was also investigated. The water content of leaves was not affected during cold acclimation but exposure of plants to -10 °C induced dehydration of plants. Freezing stress strongly reduced the quantum yield of PSII photochemistry (Y(II)) and stomatal conductance (gs) on the abaxial leaf side. In addition, the decreased ratio of Fv/Fm suggested photoinhibition or sustained quenching. Freezing-induced desiccation resulted in the inhibition of PSII activity, which was accompanied by increased thermal energy dissipation. In addition, an increase of dehydrins and ELIPs was detected, but the protein pattern differed between species. During recovery, the protein abundance decreased and plants completely recovered their photosynthetic activity. Thus, our results showed that R. serbica, R. nathaliae, and H. rhodopensis survive freezing stress due to some resurrection-linked traits and confirmed their freezing tolerance.
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Affiliation(s)
- Gergana Mihailova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria
| | - Bekim Gashi
- Department of Biology, Faculty of Mathematical and Natural Sciences, University of Prishtina "Hasan Prishtina", Eqerem Cabej Str No 51, 10020 Prishtina, Kosovo
| | - Nikola Krastev
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria
| | - Katya Georgieva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria
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33
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Pichler G, Muggia L, Carniel FC, Grube M, Kranner I. How to build a lichen: from metabolite release to symbiotic interplay. THE NEW PHYTOLOGIST 2023; 238:1362-1378. [PMID: 36710517 PMCID: PMC10952756 DOI: 10.1111/nph.18780] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/28/2022] [Indexed: 06/18/2023]
Abstract
Exposing their vegetative bodies to the light, lichens are outstanding amongst other fungal symbioses. Not requiring a pre-established host, 'lichenized fungi' build an entirely new structure together with microbial photosynthetic partners that neither can form alone. The signals involved in the transition of a fungus and a compatible photosynthetic partner from a free-living to a symbiotic state culminating in thallus formation, termed 'lichenization', and in the maintenance of the symbiosis, are poorly understood. Here, we synthesise the puzzle pieces of the scarce knowledge available into an updated concept of signalling involved in lichenization, comprising five main stages: (1) the 'pre-contact stage', (2) the 'contact stage', (3) 'envelopment' of algal cells by the fungus, (4) their 'incorporation' into a pre-thallus and (5) 'differentiation' into a complex thallus. Considering the involvement of extracellularly released metabolites in each phase, we propose that compounds such as fungal lectins and algal cyclic peptides elicit early contact between the symbionts-to-be, whereas phytohormone signalling, antioxidant protection and carbon exchange through sugars and sugar alcohols are of continued importance throughout all stages. In the fully formed lichen thallus, secondary lichen metabolites and mineral nutrition are suggested to stabilize the functionalities of the thallus, including the associated microbiota.
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Affiliation(s)
- Gregor Pichler
- Department of BotanyUniversity of InnsbruckSternwartestraße 156020InnsbruckAustria
| | - Lucia Muggia
- Department of Life SciencesUniversity of TriesteVia L. Giorgieri 1034127TriesteItaly
| | | | - Martin Grube
- Institute of BiologyUniversity of GrazHolteigasse 68010GrazAustria
| | - Ilse Kranner
- Department of BotanyUniversity of InnsbruckSternwartestraße 156020InnsbruckAustria
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34
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Bondi L, de Paula LFA, Rosado BHP, Porembski S. Demystifying the convergent ecological specialization of desiccation-tolerant vascular plants for water deficit. ANNALS OF BOTANY 2023; 131:521-531. [PMID: 36655617 PMCID: PMC10072101 DOI: 10.1093/aob/mcad005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND AND AIMS Desiccation-tolerant vascular plants (DT plants) are able to tolerate the desiccation of their vegetative tissues; as a result, two untested paradigms can be found in the literature, despite contradictions to theoretical premises and empirical findings. First, it is widely accepted that DT plants form a convergent group of specialist plants to water deficit conditions. A derived paradigm is that DT plants are placed at the extreme end of stress tolerance. Here, we tested the hypotheses that DT plants (1) are in fact convergent specialists for water deficit conditions and (2) exhibit ecological strategies related to stress tolerance, conservative resource-use and survival. METHODS We used biogeographical and functional-traits approaches to address the mentioned paradigms and assess the species' ecological strategies. For this, 27 DT plants were used and compared to 27 phylogenetically related desiccation-sensitive vascular plants (DS plants). KEY RESULTS We could not confirm either of the two hypotheses. We found that despite converging in desiccation tolerance, DT plants differ in relation to the conditions in which they occur and the ecological strategies they use to deal with water deficit. We found that some DT plants exhibit advantageous responses for higher growth and resource acquisition, which are suitable responses to cope with more productive conditions or with higher disturbance. We discuss that the ability to tolerate desiccation could compensate for a drought vulnerability promoted by higher investment in growth and bring advantages to deal with quick and pronounced variation of water, rather than to drought solely. CONCLUSIONS DT plants are not only selected by drought as an environmental constraint. The alternative functional designs could promote the diversity of ecological strategies, which preclude their convergence to the same resources and conditions. Thus, DT plants are a heterogeneous group of plants in how they deal with drought, despite their desiccation tolerance ability.
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Affiliation(s)
- Luiz Bondi
- Department of Botany, University of Rostock, Rostock, Germany
- Department of Ecology, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
| | - Luiza F A de Paula
- Department of Genetics, Ecology and Evolution, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Bruno H P Rosado
- Department of Ecology, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
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35
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VanBuren R, Wai CM, Giarola V, Župunski M, Pardo J, Kalinowski M, Grossmann G, Bartels D. Core cellular and tissue-specific mechanisms enable desiccation tolerance in Craterostigma. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:231-245. [PMID: 36843450 DOI: 10.1111/tpj.16165] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 01/12/2023] [Accepted: 02/17/2023] [Indexed: 05/10/2023]
Abstract
Resurrection plants can survive prolonged life without water (anhydrobiosis) in regions with seasonal drying. This desiccation tolerance requires the coordination of numerous cellular processes across space and time, and individual plant tissues face unique constraints related to their function. Here, we analyzed the complex, octoploid genome of the model resurrection plant Craterostigma (C. plantagineum), and surveyed spatial and temporal expression dynamics to identify genetic elements underlying desiccation tolerance. Homeologous genes within the Craterostigma genome have divergent expression profiles, suggesting the subgenomes contribute differently to desiccation tolerance traits. The Craterostigma genome contains almost 200 tandemly duplicated early light-induced proteins, a hallmark trait of desiccation tolerance, with massive upregulation under water deficit. We identified a core network of desiccation-responsive genes across all tissues, but observed almost entirely unique expression dynamics in each tissue during recovery. Roots and leaves have differential responses related to light and photoprotection, autophagy and nutrient transport, reflecting their divergent functions. Our findings highlight a universal set of likely ancestral desiccation tolerance mechanisms to protect cellular macromolecules under anhydrobiosis, with secondary adaptations related to tissue function.
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Affiliation(s)
- Robert VanBuren
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, 48824, USA
| | - Ching Man Wai
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, 48824, USA
| | | | - Milan Župunski
- Institute of Cell and Interaction Biology, CEPLAS, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Jeremy Pardo
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI, 48824, USA
- Department of Plant Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Michael Kalinowski
- Department of Horticulture, Michigan State University, East Lansing, MI, 48824, USA
| | - Guido Grossmann
- Institute of Cell and Interaction Biology, CEPLAS, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Dorothea Bartels
- IMBIO, University of Bonn, Kirschallee 1, D-53115, Bonn, Germany
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Quintanilla LG, Aranda I, Clemente-Moreno MJ, Pons-Perpinyà J, Gago J. Ecophysiological Differentiation among Two Resurrection Ferns and Their Allopolyploid Derivative. PLANTS (BASEL, SWITZERLAND) 2023; 12:1529. [PMID: 37050155 PMCID: PMC10096763 DOI: 10.3390/plants12071529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/27/2023] [Accepted: 03/30/2023] [Indexed: 06/19/2023]
Abstract
Theoretically, the coexistence of diploids and related polyploids is constrained by reproductive and competitive mechanisms. Although niche differentiation can explain the commonly observed co-occurrence of cytotypes, the underlying ecophysiological differentiation among cytotypes has hardly been studied. We compared the leaf functional traits of the allotetraploid resurrection fern Oeosporangium tinaei (HHPP) and its diploid parents, O. hispanicum (HH) and O. pteridioides (PP), coexisting in the same location. Our experimental results showed that all three species can recover physiological status after severe leaf dehydration, which confirms their 'resurrection' ability. However, compared with PP, HH had much higher investment per unit area of light-capturing surface, lower carbon assimilation rate per unit mass for the same midday water potential, higher non-enzymatic antioxidant capacity, higher carbon content, and lower contents of nitrogen, phosphorus, and other macronutrients. These traits allow HH to live in microhabitats with less availability of water and nutrients (rock crevices) and to have a greater capacity for resurrection. The higher assimilation capacity and lower antioxidant capacity of PP explain its more humid and nutrient-rich microhabitats (shallow soils). HHPP traits were mostly intermediate between those of HH and PP, and they allow the allotetraploid to occupy the free niche space left by the diploids.
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Affiliation(s)
- Luis G. Quintanilla
- School of Environmental Sciences and Technology (ESCET), University Rey Juan Carlos, 28922 Móstoles, Spain
| | - Ismael Aranda
- National Institute for Agricultural and Food Research and Technology (INIA), Spanish National Research Council, 28040 Madrid, Spain
| | - María José Clemente-Moreno
- Agro-Environmental and Water Economics Institute (INAGEA), University of the Balearic Islands, 07122 Palma de Mallorca, Spain
| | - Joan Pons-Perpinyà
- Agro-Environmental and Water Economics Institute (INAGEA), University of the Balearic Islands, 07122 Palma de Mallorca, Spain
| | - Jorge Gago
- Agro-Environmental and Water Economics Institute (INAGEA), University of the Balearic Islands, 07122 Palma de Mallorca, Spain
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37
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Cosme M. Mycorrhizas drive the evolution of plant adaptation to drought. Commun Biol 2023; 6:346. [PMID: 36997637 PMCID: PMC10063553 DOI: 10.1038/s42003-023-04722-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 03/14/2023] [Indexed: 04/03/2023] Open
Abstract
Plant adaptation to drought facilitates major ecological transitions, and will likely play a vital role under looming climate change. Mycorrhizas, i.e. strategic associations between plant roots and soil-borne symbiotic fungi, can exert strong influence on the tolerance to drought of extant plants. Here, I show how mycorrhizal strategy and drought adaptation have been shaping one another throughout the course of plant evolution. To characterize the evolutions of both plant characters, I applied a phylogenetic comparative method using data of 1,638 extant species globally distributed. The detected correlated evolution unveiled gains and losses of drought tolerance occurring at faster rates in lineages with ecto- or ericoid mycorrhizas, which were on average about 15 and 300 times faster than in lineages with the arbuscular mycorrhizal and naked root (non-mycorrhizal alone or with facultatively arbuscular mycorrhizal) strategy, respectively. My study suggests that mycorrhizas can play a key facilitator role in the evolutionary processes of plant adaptation to critical changes in water availability across global climates.
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Affiliation(s)
- Marco Cosme
- Mycology, Earth and Life Institute, Université Catholique de Louvain, Croix du sud 2, 1348, Louvain‑la‑Neuve, Belgium.
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Jia JS, Ge N, Wang QY, Zhao LT, Chen C, Chen JW. Genome-wide identification and characterization of members of the LEA gene family in Panax notoginseng and their transcriptional responses to dehydration of recalcitrant seeds. BMC Genomics 2023; 24:126. [PMID: 36932328 PMCID: PMC10024439 DOI: 10.1186/s12864-023-09229-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 03/06/2023] [Indexed: 03/19/2023] Open
Abstract
BACKGROUND Late embryogenesis abundant (LEA) proteins play an important role in dehydration process of seed maturation. The seeds of Panax notoginseng (Burkill) F. H. Chen are typically characterized with the recalcitrance and are highly sensitive to dehydration. However, it is not very well known about the role of LEA proteins in response to dehydration stress in P. notoginseng seeds. We will perform a genome-wide analysis of the LEA gene family and their transcriptional responses to dehydration stress in recalcitrant P. notoginseng seeds. RESULTS In this study, 61 LEA genes were identified from the P. notoginseng genome, and they were renamed as PnoLEA. The PnoLEA genes were classified into seven subfamilies based on the phylogenetic relationships, gene structure and conserved domains. The PnoLEA genes family showed relatively few introns and was highly conserved. Unexpectedly, the LEA_6 subfamily was not found, and the LEA_2 subfamily contained 46 (75.4%) members. Within 19 pairs of fragment duplication events, among them 17 pairs were LEA_2 subfamily. In addition, the expression of the PnoLEA genes was obviously induced under dehydration stress, but the germination rate of P. notoginseng seeds decreased as the dehydration time prolonged. CONCLUSIONS We found that the lack of the LEA_6 subfamily, the expansion of the LEA_2 subfamily and low transcriptional levels of most PnoLEA genes might be implicated in the recalcitrant formation of P. notoginseng seeds. LEA proteins are essential in the response to dehydration stress in recalcitrant seeds, but the protective effect of LEA protein is not efficient. These results could improve our understanding of the function of LEA proteins in the response of dehydration stress and their contributions to the formation of seed recalcitrance.
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Affiliation(s)
- Jin-Shan Jia
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Na Ge
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Qing-Yan Wang
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Li-Ting Zhao
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Cui Chen
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China
| | - Jun-Wen Chen
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
- The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming, 650201, Yunnan, China.
- National & Local Joint Engineering Research Center On Germplasm Innovation & Utilization of Chinese Medicinal Materials in Southwestern China, Yunnan Agricultural University, Fengyuan Road, Panlong District, Kunming, 650201, Yunnan, China.
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Sustek-Sánchez F, Rognli OA, Rostoks N, Sõmera M, Jaškūnė K, Kovi MR, Statkevičiūtė G, Sarmiento C. Improving abiotic stress tolerance of forage grasses - prospects of using genome editing. FRONTIERS IN PLANT SCIENCE 2023; 14:1127532. [PMID: 36824201 PMCID: PMC9941169 DOI: 10.3389/fpls.2023.1127532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Due to an increase in the consumption of food, feed, and fuel and to meet global food security needs for the rapidly growing human population, there is a necessity to obtain high-yielding crops that can adapt to future climate changes. Currently, the main feed source used for ruminant livestock production is forage grasses. In temperate climate zones, perennial grasses grown for feed are widely distributed and tend to suffer under unfavorable environmental conditions. Genome editing has been shown to be an effective tool for the development of abiotic stress-resistant plants. The highly versatile CRISPR-Cas system enables increasingly complex modifications in genomes while maintaining precision and low off-target frequency mutations. In this review, we provide an overview of forage grass species that have been subjected to genome editing. We offer a perspective view on the generation of plants resilient to abiotic stresses. Due to the broad factors contributing to these stresses the review focuses on drought, salt, heat, and cold stresses. The application of new genomic techniques (e.g., CRISPR-Cas) allows addressing several challenges caused by climate change and abiotic stresses for developing forage grass cultivars with improved adaptation to the future climatic conditions. Genome editing will contribute towards developing safe and sustainable food systems.
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Affiliation(s)
- Ferenz Sustek-Sánchez
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
| | - Odd Arne Rognli
- Department of Plant Sciences, Faculty of Biosciences, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Nils Rostoks
- Department of Microbiology and Biotechnology, Faculty of Biology, University of Latvia, Riga, Latvia
| | - Merike Sõmera
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
| | - Kristina Jaškūnė
- Laboratory of Genetics and Physiology, Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, Lithuania
| | - Mallikarjuna Rao Kovi
- Department of Plant Sciences, Faculty of Biosciences, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - Gražina Statkevičiūtė
- Laboratory of Genetics and Physiology, Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, Akademija, Lithuania
| | - Cecilia Sarmiento
- Department of Chemistry and Biotechnology, Tallinn University of Technology, Tallinn, Estonia
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Nadarajan J, Walters C, Pritchard HW, Ballesteros D, Colville L. Seed Longevity-The Evolution of Knowledge and a Conceptual Framework. PLANTS (BASEL, SWITZERLAND) 2023; 12:471. [PMID: 36771556 PMCID: PMC9919896 DOI: 10.3390/plants12030471] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/12/2023] [Accepted: 01/14/2023] [Indexed: 06/18/2023]
Abstract
The lifespan or longevity of a seed is the time period over which it can remain viable. Seed longevity is a complex trait and varies greatly between species and even seed lots of the same species. Our scientific understanding of seed longevity has advanced from anecdotal 'Thumb Rules,' to empirically based models, biophysical explanations for why those models sometimes work or fail, and to the profound realisation that seeds are the model of the underexplored realm of biology when water is so limited that the cytoplasm solidifies. The environmental variables of moisture and temperature are essential factors that define survival or death, as well as the timescale to measure lifespan. There is an increasing understanding of how these factors induce cytoplasmic solidification and affect glassy properties. Cytoplasmic solidification slows down, but does not stop, the chemical reactions involved in ageing. Continued degradation of proteins, lipids and nucleic acids damage cell constituents and reduce the seed's metabolic capacity, eventually impairing the ability to germinate. This review captures the evolution of knowledge on seed longevity over the past five decades in relation to seed ageing mechanisms, technology development, including tools to predict seed storage behaviour and non-invasive techniques for seed longevity assessment. It is concluded that seed storage biology is a complex science covering seed physiology, biophysics, biochemistry and multi-omic technologies, and simultaneous knowledge advancement in these areas is necessary to improve seed storage efficacy for crops and wild species biodiversity conservation.
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Affiliation(s)
- Jayanthi Nadarajan
- The New Zealand Institute for Plant and Food Research Limited, Food Industry Science Centre, Palmerston North 4410, New Zealand
| | - Christina Walters
- USDA—Agricultural Research Service, National Laboratory for Genetic Resources Preservation, Fort Collins, CO 80521, USA
| | - Hugh W. Pritchard
- Royal Botanic Gardens, Kew, Wakehurst, Ardingly, Haywards Heath RH17 6TN, UK
- Chinese Academy of Sciences, Kunming Institute of Botany, Kunming 650201, China
| | - Daniel Ballesteros
- Faculty of Farmacy, Department of Botany and Geology, University of Valencia, Av. Vicent Estelles s/n, 46100 Valencia, Spain
| | - Louise Colville
- Royal Botanic Gardens, Kew, Wakehurst, Ardingly, Haywards Heath RH17 6TN, UK
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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: 5] [Impact Index Per Article: 5.0] [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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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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De novo transcriptome assembly and analysis of genes involved in desiccation tolerance in Grimmia pilifera. Gene 2022; 847:146841. [PMID: 36075326 DOI: 10.1016/j.gene.2022.146841] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 07/13/2022] [Accepted: 08/23/2022] [Indexed: 11/22/2022]
Abstract
The anatomically simple plants that transition from the aquatic to the terrestrial have a certain mechanism to deal with the damage caused by the changing living environment. Grimmia pilifera is a type of resurrection plants that can survive a long period of desiccation. To understand the molecular mechanisms of desiccation tolerance, nine cDNA libraries were constructed in triplicate from mRNA obtained from G. pilifera for the 0 h, 6 h and 18 h desiccation treatment. RNA-Seq generated ∼ 666 million reads which were assembled into 135,850 unigenes. The differentially expressed genes (DEGs) were identified between different period of time of desiccation. Gene ontology analysis showed that a significant number of genes involved in water deprivation, chloroplast organization, xyloglucan metabolic process, regulation of signaling pathway. In addition, genes involved in osmotic stress, oxidative stress, accumulation of soluble matter, such as gene encoding antioxidant enzymes, trehalose synthase and channel protein, were up-regulated in response to drought stress. These results will be helpful for further studying on the molecular mechanisms of desiccation responses in G. pilifera.
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Georgieva K, Mihailova G, Fernández-Marín B, Bertazza G, Govoni A, Arzac MI, Laza JM, Vilas JL, García-Plazaola JI, Rapparini F. Protective Strategies of Haberlea rhodopensis for Acquisition of Freezing Tolerance: Interaction between Dehydration and Low Temperature. Int J Mol Sci 2022; 23:ijms232315050. [PMID: 36499377 PMCID: PMC9739172 DOI: 10.3390/ijms232315050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/28/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022] Open
Abstract
Resurrection plants are able to deal with complete dehydration of their leaves and then recover normal metabolic activity after rehydration. Only a few resurrection species are exposed to freezing temperatures in their natural environments, making them interesting models to study the key metabolic adjustments of freezing tolerances. Here, we investigate the effect of cold and freezing temperatures on physiological and biochemical changes in the leaves of Haberlea rhodopensis under natural and controlled environmental conditions. Our data shows that leaf water content affects its thermodynamical properties during vitrification under low temperatures. The changes in membrane lipid composition, accumulation of sugars, and synthesis of stress-induced proteins were significantly activated during the adaptation of H. rhodopensis to both cold and freezing temperatures. In particular, the freezing tolerance of H. rhodopensis relies on a sucrose/hexoses ratio in favor of hexoses during cold acclimation, while there is a shift in favor of sucrose upon exposure to freezing temperatures, especially evident when leaf desiccation is relevant. This pattern was paralleled by an elevated ratio of unsaturated/saturated fatty acids and significant quantitative and compositional changes in stress-induced proteins, namely dehydrins and early light-induced proteins (ELIPs). Taken together, our data indicate that common responses of H. rhodopensis plants to low temperature and desiccation involve the accumulation of sugars and upregulation of dehydrins/ELIP protein expression. Further studies on the molecular mechanisms underlying freezing tolerance (genes and genetic regulatory mechanisms) may help breeders to improve the resistance of crop plants.
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Affiliation(s)
- Katya Georgieva
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria
- Correspondence: ; Tel.: +359-2-979-2620
| | - Gergana Mihailova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria
| | - Beatriz Fernández-Marín
- Department of Botany, Ecology and Plant Physiology, University of La Laguna (ULL), 38200 Tenerife, Spain
| | - Gianpaolo Bertazza
- Bioeconomy Institute (IBE), Department of Bio-Agrifood Science (DiSBA), National Research Council (CNR), Via P. Gobetti 101, I-40129 Bologna, Italy
| | - Annalisa Govoni
- Bioeconomy Institute (IBE), Department of Bio-Agrifood Science (DiSBA), National Research Council (CNR), Via P. Gobetti 101, I-40129 Bologna, Italy
| | - Miren Irati Arzac
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Bilbao, Spain
| | - José Manuel Laza
- Department of Physical Chemistry, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Bilbao, Spain
| | - José Luis Vilas
- Department of Physical Chemistry, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Bilbao, Spain
| | - José Ignacio García-Plazaola
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Bilbao, Spain
| | - Francesca Rapparini
- Bioeconomy Institute (IBE), Department of Bio-Agrifood Science (DiSBA), National Research Council (CNR), Via P. Gobetti 101, I-40129 Bologna, Italy
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Sano N, Malabarba J, Chen Z, Gaillard S, Windels D, Verdier J. Chromatin dynamics associated with seed desiccation tolerance/sensitivity at early germination in Medicago truncatula. FRONTIERS IN PLANT SCIENCE 2022; 13:1059493. [PMID: 36507374 PMCID: PMC9729785 DOI: 10.3389/fpls.2022.1059493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 11/03/2022] [Indexed: 06/17/2023]
Abstract
Desiccation tolerance (DT) has contributed greatly to the adaptation of land plants to severe water-deficient conditions. DT is mostly observed in reproductive parts in flowering plants such as seeds. The seed DT is lost at early post germination stage but is temporally re-inducible in 1 mm radicles during the so-called DT window following a PEG treatment before being permanently silenced in 5 mm radicles of germinating seeds. The molecular mechanisms that activate/reactivate/silence DT in developing and germinating seeds have not yet been elucidated. Here, we analyzed chromatin dynamics related to re-inducibility of DT before and after the DT window at early germination in Medicago truncatula radicles to determine if DT-associated genes were transcriptionally regulated at the chromatin levels. Comparative transcriptome analysis of these radicles identified 948 genes as DT re-induction-related genes, positively correlated with DT re-induction. ATAC-Seq analyses revealed that the chromatin state of genomic regions containing these genes was clearly modulated by PEG treatment and affected by growth stages with opened chromatin in 1 mm radicles with PEG (R1P); intermediate openness in 1 mm radicles without PEG (R1); and condensed chromatin in 5 mm radicles without PEG (R5). In contrast, we also showed that the 103 genes negatively correlated with the re-induction of DT did not show any transcriptional regulation at the chromatin level. Additionally, ChIP-Seq analyses for repressive marks H2AK119ub and H3K27me3 detected a prominent signal of H3K27me3 on the DT re-induction-related gene sequences at R5 but not in R1 and R1P. Moreover, no clear H2AK119ub marks was observed on the DT re-induction-related gene sequences at both developmental radicle stages, suggesting that silencing of DT process after germination will be mainly due to H3K27me3 marks by the action of the PRC2 complex, without involvement of PRC1 complex. The dynamic of chromatin changes associated with H3K27me3 were also confirmed on seed-specific genes encoding potential DT-related proteins such as LEAs, oleosins and transcriptional factors. However, several transcriptional factors did not show a clear link between their decrease of chromatin openness and H3K27me3 levels, suggesting that their accessibility may also be regulated by additional factors, such as other histone modifications. Finally, in order to make these comprehensive genome-wide analyses of transcript and chromatin dynamics useful to the scientific community working on early germination and DT, we generated a dedicated genome browser containing all these data and publicly available at https://iris.angers.inrae.fr/mtseedepiatlas/jbrowse/?data=Mtruncatula.
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Chemical Profiling, Antiproliferative and Antimigratory Capacity of Haberlea rhodopensis Extracts in an In Vitro Platform of Various Human Cancer Cell Lines. Antioxidants (Basel) 2022; 11:antiox11122305. [PMID: 36552514 PMCID: PMC9774357 DOI: 10.3390/antiox11122305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022] Open
Abstract
Haberlea rhodopensis is a Balkan endemic plant that belongs to the Gesneriaceae family, and is believed to have medicinal use and health-promoting properties. This study aimed to (i) prepare aqueous (HAE) and ethanolic (HEE) extracts from the leaves of H. rhodopensis from in vitro propagated plants, (ii) screen for their potential antiproliferative and antimigratory activities, and (iii) chemically characterize both HAE and HEE by identifying compounds which may contribute to their observed bioactivity thereby further supporting their potential use in biomedical applications. The antiproliferative activity of both extracts was assessed against six human cancer cell lines by employing the sulforhodamine-B (SRB) assay. HEE was found to be more potent in inhibiting cancer cell growth as compared to HAE. Therefore, HEE's antimigratory effects were further studied in hepatocellular carcinoma (HepG2) and non-small cell lung adenocarcinoma (A459) cell lines as they were among the most sensitive ones to its antiproliferative activity. HEE was found to exert significant antimigratory concentration-dependent effects in both cell lines assessed with the wound healing assay. Chemical characterization by UPLC-MS/MS analysis identified that HEE contains higher levels of flavonoids, phenolic compounds, pigments (chlorophyll-/-b, lycopene, and β-carotene), monoterpenoids, and condensed tannins compared to HAE, while HAE, contains higher levels of soluble protein and sugars. Furthermore, HEE demonstrated remarkable antioxidant activity evaluated by the 2,2-diphenyl-1-picrylhydrazyl (DPPH●), 2,2-azinobis (3-ethyl-benzothiazoline-6-sulfonic acid) (ABTS●+) and ferric reducing/antioxidant power (FRAP) assays. We have obtained comprehensive results highlighting the potential of HEE as a source of bioactive compounds with anticancer properties. Future studies should aim at identifying the chemical constituents responsible for the bioactivities observed, and focus on investigating HEE's effects, in in vivo preclinical cancer models.
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Hernández-Sánchez IE, Maruri-López I, Martinez-Martinez C, Janis B, Jiménez-Bremont JF, Covarrubias AA, Menze MA, Graether SP, Thalhammer A. LEAfing through literature: late embryogenesis abundant proteins coming of age-achievements and perspectives. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:6525-6546. [PMID: 35793147 DOI: 10.1093/jxb/erac293] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
To deal with increasingly severe periods of dehydration related to global climate change, it becomes increasingly important to understand the complex strategies many organisms have developed to cope with dehydration and desiccation. While it is undisputed that late embryogenesis abundant (LEA) proteins play a key role in the tolerance of plants and many anhydrobiotic organisms to water limitation, the molecular mechanisms are not well understood. In this review, we summarize current knowledge of the physiological roles of LEA proteins and discuss their potential molecular functions. As these are ultimately linked to conformational changes in the presence of binding partners, post-translational modifications, or water deprivation, we provide a detailed summary of current knowledge on the structure-function relationship of LEA proteins, including their disordered state in solution, coil to helix transitions, self-assembly, and their recently discovered ability to undergo liquid-liquid phase separation. We point out the promising potential of LEA proteins in biotechnological and agronomic applications, and summarize recent advances. We identify the most relevant open questions and discuss major challenges in establishing a solid understanding of how these intriguing molecules accomplish their tasks as cellular sentinels at the limits of surviving water scarcity.
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Affiliation(s)
- Itzell E Hernández-Sánchez
- Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Israel Maruri-López
- Center for Desert Agriculture, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Coral Martinez-Martinez
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, 62210, Mexico
| | - Brett Janis
- Department of Biology, University of Louisville, Louisville, KY 40292, USA
| | - Juan Francisco Jiménez-Bremont
- Laboratorio de Biotecnología Molecular de Plantas, División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, 78216, San Luis Potosí, Mexico
| | - Alejandra A Covarrubias
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, 62210, Mexico
| | - Michael A Menze
- Department of Biology, University of Louisville, Louisville, KY 40292, USA
| | - Steffen P Graether
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario, Canada
| | - Anja Thalhammer
- Department of Physical Biochemistry, University of Potsdam, D-14476 Potsdam, Germany
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Ivanova A, O′Leary B, Signorelli S, Falconet D, Moyankova D, Whelan J, Djilianov D, Murcha MW. Mitochondrial activity and biogenesis during resurrection of Haberlea rhodopensis. THE NEW PHYTOLOGIST 2022; 236:943-957. [PMID: 35872573 PMCID: PMC9804507 DOI: 10.1111/nph.18396] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/11/2022] [Indexed: 06/01/2023]
Abstract
Haberlea rhodopensis is a resurrection plant that can tolerate extreme and prolonged periods of desiccation with a rapid restoration of physiological function upon rehydration. Specialized mechanisms are required to minimize cellular damage during desiccation and to maintain integrity for rapid recovery following rehydration. In this study we used respiratory activity measurements, electron microscopy, transcript, protein and blue native-PAGE analysis to investigate mitochondrial activity and biogenesis in fresh, desiccated and rehydrated detached H. rhodopensis leaves. We demonstrate that unlike photosynthesis, mitochondrial respiration was almost immediately activated to levels of fresh tissue upon rehydration. The abundance of transcripts and proteins involved in mitochondrial respiration and biogenesis were at comparable levels in fresh, desiccated and rehydrated tissues. Blue native-PAGE analysis revealed fully assembled and equally abundant OXPHOS complexes in mitochondria isolated from fresh, desiccated and rehydrated detached leaves. We observed a high abundance of alternative respiratory components which correlates with the observed high uncoupled respiration capacity in desiccated tissue. Our study reveals that during desiccation of vascular H. rhodopensis tissue, mitochondrial composition is conserved and maintained at a functional state allowing for an almost immediate activation to full capacity upon rehydration. Mitochondria-specific mechanisms were activated during desiccation which probably play a role in maintaining tolerance.
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Affiliation(s)
- Aneta Ivanova
- School of Molecular SciencesThe University of Western Australia35 Stirling Highway, CrawleyPerthWA6009Australia
- AgroBioInstituteAgricultural Academy8 Dragan Tzankov Blvd.1164SofiaBulgaria
| | - Brendan O′Leary
- School of Molecular SciencesThe University of Western Australia35 Stirling Highway, CrawleyPerthWA6009Australia
- Saskatoon Research and Development Centre, Agriculture and Agri‐Food Canada107 Science PlaceSaskatoonSKK1A 0C5Canada
| | - Santiago Signorelli
- School of Molecular SciencesThe University of Western Australia35 Stirling Highway, CrawleyPerthWA6009Australia
- Department of Plant Biology, School of AgricultureUniversidad de la RepúblicaE. Garzón 780, Sayago12900MontevideoUruguay
| | - Denis Falconet
- Cell and Plant Physiology Laboratory, CNRS, CEA, INRAE, IRIGUniversité Grenoble Alpes38054GrenobleFrance
| | - Daniela Moyankova
- AgroBioInstituteAgricultural Academy8 Dragan Tzankov Blvd.1164SofiaBulgaria
| | - James Whelan
- Department of Animal, Plant and Soil Science, School of Life Science, The ARC Centre of Excellence in Plant Energy BiologyLa Trobe UniversityBundoora3086VICAustralia
| | - Dimitar Djilianov
- AgroBioInstituteAgricultural Academy8 Dragan Tzankov Blvd.1164SofiaBulgaria
| | - Monika W. Murcha
- School of Molecular SciencesThe University of Western Australia35 Stirling Highway, CrawleyPerthWA6009Australia
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49
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Zhang W, Wang K, Chen C. Artificial Neural Network Assisted Multiobjective Optimization of Postharvest Blanching and Drying of Blueberries. Foods 2022; 11:3347. [PMID: 36359960 PMCID: PMC9659016 DOI: 10.3390/foods11213347] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 10/04/2022] [Accepted: 10/21/2022] [Indexed: 07/03/2024] Open
Abstract
This study aimed to optimize the postharvest blanching and drying process of blueberries using high-humidity air impingement (HHAIB) and hot-air-assisted infrared (HAIR) heating. A novel pilot-scale hot-air-assisted carbon-fiber infrared (IR) blanching/drying system was developed. Fresh blueberries with an average diameter of 10~15 mm were first blanched with high-humidity air at 110 °C and 12 m/s velocity for different durations (30, 60, 90, and 120 s); subsequently, the preblanched blueberries were dried at different IR heating temperatures (50, 60, 70, 80, and 90 °C) and air velocities (0.01, 0.5, 1.5, and 2.5 m/s), following a factorial design. The drying time (DT), specific energy consumption (SEC), ascorbic acid content (VC), and rehydration capacity (RC) were determined as response variables. A three-layer feed-forward artificial neural network (ANN) model with a backpropagation algorithm was constructed to simulate the influence of blanching time, IR heating temperature, and air velocity on the four response variables by training on the experimental data. Objective functions for DT, SEC, VC, and RC that were developed by the ANN model were used for the simultaneous minimization of DT and SEC and maximization of VC and RC using a nondominated sorting genetic algorithm (NSGA II) to find the Pareto-optimal solutions. The optimal conditions were found to be 93 s of blanching, 89 °C IR heating, and a 1.2 m/s air velocity, which resulted in a drying time of 366.7 min, an SEC of 1.43 MJ/kg, a VC of 4.19 mg/100g, and an RC of 3.35. The predicted values from the ANN model agreed well with the experimental data under optimized conditions, with a low relative deviation value of 1.43-3.08%. The findings from this study provide guidance to improve the processing efficiency, product quality, and sustainability of blueberry postharvest processes. The ANN-assisted optimization approach developed in this study also sets a foundation for the smart control of processing systems of blueberries and similar commodities.
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Affiliation(s)
- Weipeng Zhang
- School of Artificial Intelligence, Beijing Technology and Business University, 11 Fucheng Road, Beijing 100048, China
| | - Ke Wang
- Biological and Agricultural Engineering Department, University of California Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Chang Chen
- Food Science Department, University of Guelph, Guelph, ON N1G 2W1, Canada
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Coevolution of tandemly repeated hlips and RpaB-like transcriptional factor confers desiccation tolerance to subaerial Nostoc species. Proc Natl Acad Sci U S A 2022; 119:e2211244119. [PMID: 36215485 PMCID: PMC9586280 DOI: 10.1073/pnas.2211244119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Desert-inhabiting cyanobacteria can tolerate extreme desiccation and quickly revive after rehydration. The regulatory mechanisms that enable their vegetative cells to resurrect upon rehydration are poorly understood. In this study, we identified a single gene family of high light-inducible proteins (Hlips) with dramatic expansion in the Nostoc flagelliforme genome and found an intriguingly special convergence formed through four tandem gene duplication. The emerged four independent hlip genes form a gene cluster (hlips-cluster) and respond to dehydration positively. The gene mutants in N. flagelliforme were successfully generated by using gene-editing technology. Phenotypic analysis showed that the desiccation tolerance of hlips-cluster-deleted mutant decreased significantly due to impaired photosystem II repair, whereas heterologous expression of hlips-cluster from N. flagelliforme enhanced desiccation tolerance in Nostoc sp. PCC 7120. Furthermore, a transcription factor Hrf1 (hlips-cluster repressor factor 1) was identified and shown to coordinately regulate the expression of hlips-cluster and desiccation-induced psbAs. Hrf1 acts as a negative regulator for the adaptation of N. flagelliforme to the harsh desert environment. Phylogenetic analysis revealed that most species in the Nostoc genus possess both tandemly repeated Hlips and Hrf1. Our results suggest convergent evolution of desiccation tolerance through the coevolution of tandem Hlips duplication and Hrf1 in subaerial Nostoc species, providing insights into the mechanism of desiccation tolerance in photosynthetic organisms.
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