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Shen Y, Li L, Du P, Xing X, Gu Z, Yu Z, Tao Y, Jiang H. Appropriate Drought Training Induces Optimal Drought Tolerance by Inducing Stepwise H 2O 2 Homeostasis in Soybean. PLANTS (BASEL, SWITZERLAND) 2024; 13:1202. [PMID: 38732418 PMCID: PMC11085929 DOI: 10.3390/plants13091202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/13/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024]
Abstract
Soybean is considered one of the most drought-sensitive crops, and ROS homeostasis can regulate drought tolerance in these plants. Understanding the mechanism of H2O2 homeostasis and its regulatory effect on drought stress is important for improving drought tolerance in soybean. We used different concentrations of polyethylene glycol (PEG) solutions to simulate the progression from weak drought stress (0.2%, 0.5%, and 1% PEG) to strong drought stress (5% PEG). We investigated the responses of the soybean plant phenotype, ROS level, injury severity, antioxidant system, etc., to different weak drought stresses and subsequent strong drought stresses. The results show that drought-treated plants accumulated H2O2 for signaling and exhibited drought tolerance under the following stronger drought stress, among which the 0.5% PEG treatment had the greatest effect. Under the optimal treatment, there was qualitatively describable H2O2 homeostasis, characterized by a consistent increasing amplitude in H2O2 content compared with CK. The H2O2 signal formed under the optimum treatment induced the capacity of the antioxidant system to remove excess H2O2 to form a primary H2O2 homeostasis. The primary H2O2 homeostasis further induced senior H2O2 homeostasis under the following strong drought and maximized the improvement of drought tolerance. These findings might suggest that gradual drought training could result in stepwise H2O2 homeostasis to continuously improve drought tolerance.
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Affiliation(s)
- Yuqian Shen
- Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture and Rural Affairs, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agriculture University, Nanjing 210095, China; (Y.S.); (L.L.); (P.D.); (Z.G.); (Z.Y.); (Y.T.)
| | - Lei Li
- Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture and Rural Affairs, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agriculture University, Nanjing 210095, China; (Y.S.); (L.L.); (P.D.); (Z.G.); (Z.Y.); (Y.T.)
| | - Peng Du
- Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture and Rural Affairs, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agriculture University, Nanjing 210095, China; (Y.S.); (L.L.); (P.D.); (Z.G.); (Z.Y.); (Y.T.)
| | - Xinghua Xing
- Xuzhou Institute of Agricultural Sciences of Xu-Huai Region of Jiangsu, Xuzhou 221131, China
| | - Zhiwei Gu
- Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture and Rural Affairs, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agriculture University, Nanjing 210095, China; (Y.S.); (L.L.); (P.D.); (Z.G.); (Z.Y.); (Y.T.)
| | - Zhiming Yu
- Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture and Rural Affairs, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agriculture University, Nanjing 210095, China; (Y.S.); (L.L.); (P.D.); (Z.G.); (Z.Y.); (Y.T.)
| | - Yujia Tao
- Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture and Rural Affairs, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agriculture University, Nanjing 210095, China; (Y.S.); (L.L.); (P.D.); (Z.G.); (Z.Y.); (Y.T.)
| | - Haidong Jiang
- Key Laboratory of Crop Physiology and Ecology in Southern China, Ministry of Agriculture and Rural Affairs, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agriculture University, Nanjing 210095, China; (Y.S.); (L.L.); (P.D.); (Z.G.); (Z.Y.); (Y.T.)
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Xing C, Lei C, Yang Y, Zhou D, Liu S, Xu J, Liu Z, Wu T, Zhou X, Huang S, Liu W. Drought responses and population differentiation of Calohypnum plumiforme inferred from comparative transcriptome analysis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 208:108456. [PMID: 38417308 DOI: 10.1016/j.plaphy.2024.108456] [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: 07/03/2023] [Revised: 01/16/2024] [Accepted: 02/20/2024] [Indexed: 03/01/2024]
Abstract
Bryophytes, known as poikilohydric plants, possess vegetative desiccation-tolerant (DT) ability to withstand water deficit stress. Consequently, they offer valuable genetic resources for enhancing resistance to water scarcity stress. In this research, we examined the physiological, phytohormonal, and transcriptomic changes in DT mosses Calohypnum plumiforme from two populations, with and without desiccation treatment. Comparative analysis revealed population differentiation at physiological, gene sequence, and expression levels. Under desiccation stress, the activities of superoxide dismutase (SOD) and peroxidase (POD) showed significant increases, along with elevation of soluble sugars and proteins, consistent with the transcriptome changes. Notable activation of the bypass pathway of JA biosynthesis suggested their roles in compensating for JA accumulation. Furthermore, our analysis revealed significant correlations among phytohormones and DEGs in their respective signaling pathway, indicating potential complex interplays of hormones in C plumiforme. Protein phosphatase 2C (PP2C) in the abscisic acid signaling pathway emerged as the pivotal hub in the phytohormone crosstalk regulation network. Overall, this study was one of the first comprehensive transcriptome analyses of moss C. plumiforme under slow desiccation rates, expanding our knowledge of bryophyte transcriptomes and shedding light on the gene regulatory network involved in response to desiccation, as well as the evolutionary processes of local adaptation across moss populations.
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Affiliation(s)
- Chengguang Xing
- Guangdong Key Laboratory of Plant Resources, School of Ecology, Sun Yat-sen University, Shenzhen, 518100, China.
| | - Chunyi Lei
- Department of Scientific Research and Education, Heishiding Nature Reserve, Zhaoqing, 526536, China.
| | - Yuchen Yang
- Guangdong Key Laboratory of Plant Resources, School of Ecology, Sun Yat-sen University, Shenzhen, 518100, China.
| | - Dandan Zhou
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519000, China.
| | - Shanshan Liu
- Guangdong Key Laboratory of Plant Resources, School of Ecology, Sun Yat-sen University, Shenzhen, 518100, China.
| | - Jianqu Xu
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.
| | - Zhiwei Liu
- Guangdong Key Laboratory of Plant Resources, School of Ecology, Sun Yat-sen University, Shenzhen, 518100, China.
| | - Tao Wu
- Guangdong Key Laboratory of Plant Resources, School of Ecology, Sun Yat-sen University, Shenzhen, 518100, China.
| | - Xiaohang Zhou
- School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.
| | - Shuzhen Huang
- Guangdong Key Laboratory of Plant Resources, School of Ecology, Sun Yat-sen University, Shenzhen, 518100, China.
| | - Weiqiu Liu
- Guangdong Key Laboratory of Plant Resources, School of Ecology, Sun Yat-sen University, Shenzhen, 518100, China.
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Nagatoshi Y, Ikazaki K, Kobayashi Y, Mizuno N, Sugita R, Takebayashi Y, Kojima M, Sakakibara H, Kobayashi NI, Tanoi K, Fujii K, Baba J, Ogiso-Tanaka E, Ishimoto M, Yasui Y, Oya T, Fujita Y. Phosphate starvation response precedes abscisic acid response under progressive mild drought in plants. Nat Commun 2023; 14:5047. [PMID: 37598175 PMCID: PMC10439899 DOI: 10.1038/s41467-023-40773-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 08/09/2023] [Indexed: 08/21/2023] Open
Abstract
Drought severely damages crop production, even under conditions so mild that the leaves show no signs of wilting. However, it is unclear how field-grown plants respond to mild drought. Here, we show through six years of field trials that ridges are a useful experimental tool to mimic mild drought stress in the field. Mild drought reduces inorganic phosphate levels in the leaves to activate the phosphate starvation response (PSR) in soybean plants in the field. Using Arabidopsis thaliana and its mutant plants grown in pots under controlled environments, we demonstrate that PSR occurs before abscisic acid response under progressive mild drought and that PSR plays a crucial role in plant growth under mild drought. Our observations in the field and laboratory using model crop and experimental plants provide insight into the molecular response to mild drought in field-grown plants and the relationship between nutrition and drought stress response.
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Affiliation(s)
- Yukari Nagatoshi
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
| | - Kenta Ikazaki
- Crop, Livestock and Environment Division, JIRCAS, Tsukuba, Ibaraki, 305-8686, Japan
| | - Yasufumi Kobayashi
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
| | - Nobuyuki Mizuno
- Graduate School of Agriculture, Kyoto University, Kyoto, Kyoto, 606-8502, Japan
- Institute of Crop Science, NARO, Tsukuba, Ibaraki, 305-8518, Japan
| | - Ryohei Sugita
- Radioisotope Research Center, Nagoya University, Nagoya, Aichi, 464-8602, Japan
| | - Yumiko Takebayashi
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, 230-0045, Japan
| | - Mikiko Kojima
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, 230-0045, Japan
| | - Hitoshi Sakakibara
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa, 230-0045, Japan
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi, 464-8601, Japan
| | - Natsuko I Kobayashi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo, 113-8657, Japan
| | - Keitaro Tanoi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Bunkyo, Tokyo, 113-8657, Japan
| | - Kenichiro Fujii
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
- Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, 305-8604, Japan
| | - Junya Baba
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan
| | - Eri Ogiso-Tanaka
- Institute of Crop Science, National Agricultuetre and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
- Center for Molecular Biodiversity Research, National Museum of Nature and Science, Tsukuba, Ibaraki, 305-0005, Japan
| | - Masao Ishimoto
- Institute of Crop Science, National Agricultuetre and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8518, Japan
| | - Yasuo Yasui
- Graduate School of Agriculture, Kyoto University, Kyoto, Kyoto, 606-8502, Japan
| | - Tetsuji Oya
- Crop, Livestock and Environment Division, JIRCAS, Tsukuba, Ibaraki, 305-8686, Japan
| | - Yasunari Fujita
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences (JIRCAS), Tsukuba, Ibaraki, 305-8686, Japan.
- Graduate School of Life Environmental Science, University of Tsukuba, Tsukuba, Ibaraki, 305-8572, Japan.
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Zhu Q, Lv J, Wu Y, Peng M, Wu X, Li J, Wu T, Zhang X, Xu X, Wang Y, Feng Y. MdbZIP74 negatively regulates osmotic tolerance and adaptability to moderate drought conditions of apple plants. JOURNAL OF PLANT PHYSIOLOGY 2023; 283:153965. [PMID: 36898191 DOI: 10.1016/j.jplph.2023.153965] [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: 12/20/2022] [Revised: 02/15/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
Drought is the most prominent threat to global agricultural production. The basic leucine zipper (bZIP) family is related to the response to a series of abiotic stress. In this case, apple calli and the seedlings of MdbZIP74-RNAi transgenic lines were obtained. Under osmotic stress and moderate drought conditions, the content of malondialdehyde, relative water content and other stress-related assays were measured. MdbZIP74 was found to negatively regulate the osmotic tolerance of apple callus. The growth of MdbZIP74-RNAi calli enhanced resistance without significant production loss. The silencing of MdbZIP74 contributes to redox balance and the adaptability of apple seedlings to moderate drought conditions. Four related differentially expressed genes in the biosynthesis of cytokinin and catabolic pathway were identified through a transcriptome analysis of MdbZIP74-RNAi seedlings under moderate drought conditions. MdLOG8 was further identified as the target of MdbZIP74 involved in the drought adaptability of apple plants using a dual experiment. Further confirmation showed MdLOG8 was maintained in the MdbZIP74-RNAi seedlings presumably acting as the growth regulator to enhance drought adaptability. It was concluded that the correct regulation of cytokinin level under moderate drought conditions maintains the redox balance and avoids the situation of plants surviving with the minimal resources.
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Affiliation(s)
- Qinyuan Zhu
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Jiahong Lv
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yue Wu
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Mengqun Peng
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xinyi Wu
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Jie Li
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Ting Wu
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xinzhong Zhang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xuefeng Xu
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yi Wang
- College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yi Feng
- College of Horticulture, China Agricultural University, Beijing, 100193, China; State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China.
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5
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Tenorio Berrío R, Verstaen K, Vandamme N, Pevernagie J, Achon I, Van Duyse J, Van Isterdael G, Saeys Y, De Veylder L, Inzé D, Dubois M. Single-cell transcriptomics sheds light on the identity and metabolism of developing leaf cells. PLANT PHYSIOLOGY 2022; 188:898-918. [PMID: 34687312 PMCID: PMC8825278 DOI: 10.1093/plphys/kiab489] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/05/2021] [Indexed: 05/08/2023]
Abstract
As the main photosynthetic instruments of vascular plants, leaves are crucial and complex plant organs. A strict organization of leaf mesophyll and epidermal cell layers orchestrates photosynthesis and gas exchange. In addition, water and nutrients for leaf growth are transported through the vascular tissue. To establish the single-cell transcriptomic landscape of these different leaf tissues, we performed high-throughput transcriptome sequencing of individual cells isolated from young leaves of Arabidopsis (Arabidopsis thaliana) seedlings grown in two different environmental conditions. The detection of approximately 19,000 different transcripts in over 1,800 high-quality leaf cells revealed 14 cell populations composing the young, differentiating leaf. Besides the cell populations comprising the core leaf tissues, we identified subpopulations with a distinct identity or metabolic activity. In addition, we proposed cell-type-specific markers for each of these populations. Finally, an intuitive web tool allows for browsing the presented dataset. Our data present insights on how the different cell populations constituting a developing leaf are connected via developmental, metabolic, or stress-related trajectories.
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Affiliation(s)
- Rubén Tenorio Berrío
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Kevin Verstaen
- Department of Applied Mathematics, Ghent University, Computer Science and Statistics, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
| | - Niels Vandamme
- Department of Applied Mathematics, Ghent University, Computer Science and Statistics, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
| | - Julie Pevernagie
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Ignacio Achon
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Julie Van Duyse
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Gert Van Isterdael
- VIB Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Yvan Saeys
- Department of Applied Mathematics, Ghent University, Computer Science and Statistics, Ghent, Belgium
- VIB Center for Inflammation Research, Ghent, Belgium
| | - Lieven De Veylder
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Dirk Inzé
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
- Author for communication:
| | - Marieke Dubois
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
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Longkumer T, Chen CY, Biancucci M, Bhaskara GB, Verslues PE. Spatial differences in stoichiometry of EGR phosphatase and Microtubule-associated Stress Protein 1 control root meristem activity during drought stress. THE PLANT CELL 2022; 34:742-758. [PMID: 34865106 PMCID: PMC8824564 DOI: 10.1093/plcell/koab290] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 11/18/2021] [Indexed: 05/16/2023]
Abstract
During moderate severity drought and low water potential (ψw) stress, poorly understood signaling mechanisms restrict both meristem cell division and subsequent cell expansion. We found that the Arabidopsis thaliana Clade E Growth-Regulating 2 (EGR2) protein phosphatase and Microtubule-Associated Stress Protein 1 (MASP1) differed in their stoichiometry of protein accumulation across the root meristem and had opposing effects on root meristem activity at low ψw. Ectopic MASP1 or EGR expression increased or decreased, respectively, root meristem size and root elongation during low ψw stress. This, along with the ability of phosphomimic MASP1 to overcome the EGR-mediated suppression of root meristem size and the observation that ectopic EGR expression had no effect on unstressed plants, indicated that during low ψw EGR activation and attenuation of MASP1 phosphorylation in their overlapping zone of expression determines root meristem size and activity. Ectopic EGR expression also decreased root cell size at low ψw. Conversely, both the egr1-1 egr2-1 and egr1-1 egr2-1 masp1-1 mutants had similarly increased root cell size but only egr1-1egr2-1 had increased cell division. These observations demonstrated that EGRs affect meristem activity via MASP1 but affect cell expansion via other mechanisms. Interestingly, EGR2 was highly expressed in the root cortex, a cell type important for growth regulation and environmental response.
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Verslues PE, Longkumer T. Size and activity of the root meristem: A key for drought resistance and a key model of drought-related signaling. PHYSIOLOGIA PLANTARUM 2022; 174:e13622. [PMID: 34988997 DOI: 10.1111/ppl.13622] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/17/2021] [Accepted: 12/24/2021] [Indexed: 06/14/2023]
Abstract
Plants make many adjustments to their growth and development in response to even small changes in water availability. Under such conditions, root elongation can be actively restricted by stress-related signaling mechanisms. Here we look at how the Arabidopsis thaliana root meristem can be affected by moderate water limitation (low water potential, ψw ). Recent characterization of the clade E Growth-Regulating (EGR) protein phosphatases and Microtubule Associated Stress Protein 1 (MASP1) provides an example of how active restriction of root meristem size allows the plant to downregulate root elongation during low ψw stress. EGR2 protein accumulation in cortex cells of the transition zone at the distal end of the root meristem illustrates how the balance of cell division versus cell expansion signals at this critical location can determine meristem size and root elongation during low ψw . These characteristics of EGRs also raise the question of whether they may also be involved in hydrotropism, and, more broadly, whether hydrotropism is a distinct response or a specific manifestation of more general mechanisms used to adjust root growth under moderate severity low ψw whether or not a gradient of water availability is present. These questions, as well as a better understanding of how specific cell layers (cortex and endodermis) seem to have an outsized role in growth regulation and better understanding the roles of plasma membrane-based signaling and polar-localized proteins in the regulation of root meristem size and cell division activity are key to elucidating the cellular mechanisms that determine root growth behavior during soil drying.
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Affiliation(s)
- Paul E Verslues
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
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8
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García-Caparrós P, De Filippis L, Gul A, Hasanuzzaman M, Ozturk M, Altay V, Lao MT. Oxidative Stress and Antioxidant Metabolism under Adverse Environmental Conditions: a Review. THE BOTANICAL REVIEW 2021; 87:421-466. [PMID: 0 DOI: 10.1007/s12229-020-09231-1] [Citation(s) in RCA: 93] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/01/2020] [Indexed: 05/25/2023]
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9
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Seed Priming Boost Adaptation in Pea Plants under Drought Stress. PLANTS 2021; 10:plants10102201. [PMID: 34686010 PMCID: PMC8541019 DOI: 10.3390/plants10102201] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/07/2021] [Accepted: 10/14/2021] [Indexed: 11/17/2022]
Abstract
In the present investigation, we study the effect of Bacillus thuringiensis MH161336 (106–8 CFU/cm3), silicon (25 mL L−1), and carrot extract (75 mL L−1) as seed primers, individually or in combination, on morphological, physio-biochemical and yield components of drought-stressed pea plants (Master B) during 2019/2020 and 2020/2021 seasons. Our results indicated that drought causes a remarkable reduction in plant height, leaf area, number of leaves per plant, and number of flowers per plant in stressed pea plants during two seasons. Likewise, number of pods, pod length, seeds weight of 10 dried plants, and dry weight of 100 seeds were decreased significantly in drought-stressed pea plants. Nevertheless, seed priming with the individual treatments or in combination boosted the morphological, physio-biochemical, and yield characters of pea plants. The best results were obtained with the Bacillus thuringiensis + carrot extract treatment, which led to a remarkable increase in the number of leaves per plant, leaf area, plant height, and number of flowers per plant in stressed pea plants in both seasons. Moreover, pod length, number of seeds per pod, seeds weight of 10 dried plants, and dry weight of 100 seeds were significantly increased as well. Bacillus thuringiensis + carrot extract treatment led to improved biochemical and physiological characters, such as relative water content, chlorophyll a, chlorophyll b, regulated the up-regulation of antioxidant enzymes, increased seed yield, and decreased lipid peroxidation and reactive oxygen species, mainly superoxide and hydrogen peroxide, in drought-stressed pea plants.
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Chakraborty S, Driscoll HE, Abrahante JE, Zhang F, Fisher RF, Harris JM. Salt Stress Enhances Early Symbiotic Gene Expression in Medicago truncatula and Induces a Stress-Specific Set of Rhizobium-Responsive Genes. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2021; 34:904-921. [PMID: 33819071 PMCID: PMC8578154 DOI: 10.1094/mpmi-01-21-0019-r] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Salt stress is a major agricultural concern inhibiting not only plant growth but also the symbiotic association between legume roots and the soil bacteria rhizobia. This symbiotic association is initiated by a molecular dialogue between the two partners, leading to the activation of a signaling cascade in the legume host and, ultimately, the formation of nitrogen-fixing root nodules. Here, we show that a moderate salt stress increases the responsiveness of early symbiotic genes in Medicago truncatula to its symbiotic partner, Sinorhizobium meliloti while, conversely, inoculation with S. meliloti counteracts salt-regulated gene expression, restoring one-third to control levels. Our analysis of early nodulin 11 (ENOD11) shows that salt-induced expression is dynamic, Nod-factor dependent, and requires the ionic but not the osmotic component of salt. We demonstrate that salt stimulation of rhizobium-induced gene expression requires NSP2, which functions as a node to integrate the abiotic and biotic signals. In addition, our work reveals that inoculation with S. meliloti succinoglycan mutants also hyperinduces ENOD11 expression in the presence or absence of salt, suggesting a possible link between rhizobial exopolysaccharide and the plant response to salt stress. Finally, we identify an accessory set of genes that are induced by rhizobium only under conditions of salt stress and have not been previously identified as being nodulation-related genes. Our data suggest that interplay of core nodulation genes with different accessory sets, specific for different abiotic conditions, functions to establish the symbiosis. Together, our findings reveal a complex and dynamic interaction between plant, microbe, and environment.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY 4.0 International license.
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Affiliation(s)
- Sanhita Chakraborty
- Department of Plant Biology, University of Vermont, Burlington, VT 05405, USA
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Heather E. Driscoll
- Vermont Biomedical Research Network (VBRN), Department of Biology, Norwich University, Northfield, Vermont 05663, USA
| | - Juan E. Abrahante
- University of Minnesota Informatics Institute (UMII) (CCRB 1-210C), 2231 6th Street SE, Minneapolis, MN 55455, USA
| | - Fan Zhang
- Vermont Biomedical Research Network (VBRN), Department of Biology, University of Vermont, Burlington, Vermont 05405, USA
- Institute for Translational Research and Department of family medicine, University of North Texas Health Science Center, Fort Worth, TX, 76107
| | - Robert F. Fisher
- Stanford University, Department of Biology, 371 Serra Mall, Stanford, California 94305-5020, USA
| | - Jeanne M. Harris
- Department of Plant Biology, University of Vermont, Burlington, VT 05405, USA
- Corresponding author: Jeanne M. Harris ()
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Kumar A, Dubey A. Rhizosphere microbiome: Engineering bacterial competitiveness for enhancing crop production. J Adv Res 2020; 24:337-352. [PMID: 32461810 PMCID: PMC7240055 DOI: 10.1016/j.jare.2020.04.014] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/15/2020] [Accepted: 04/25/2020] [Indexed: 12/29/2022] Open
Abstract
Plants in nature are constantly exposed to a variety of abiotic and biotic stresses which limits their growth and production. Enhancing crop yield and production to feed exponentially growing global population in a sustainable manner by reduced chemical fertilization and agrochemicals will be a big challenge. Recently, the targeted application of beneficial plant microbiome and their cocktails to counteract abiotic and biotic stress is gaining momentum and becomes an exciting frontier of research. Advances in next generation sequencing (NGS) platform, gene editing technologies, metagenomics and bioinformatics approaches allows us to unravel the entangled webs of interactions of holobionts and core microbiomes for efficiently deploying the microbiome to increase crops nutrient acquisition and resistance to abiotic and biotic stress. In this review, we focused on shaping rhizosphere microbiome of susceptible host plant from resistant plant which comprises of specific type of microbial community with multiple potential benefits and targeted CRISPR/Cas9 based strategies for the manipulation of susceptibility genes in crop plants for improving plant health. This review is significant in providing first-hand information to improve fundamental understanding of the process which helps in shaping rhizosphere microbiome.
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Affiliation(s)
- Ashwani Kumar
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (A Central University), Sagar 470003, M.P., India
| | - Anamika Dubey
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (A Central University), Sagar 470003, M.P., India
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12
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Mead A, Peñaloza Ramirez J, Bartlett MK, Wright JW, Sack L, Sork VL. Seedling response to water stress in valley oak (Quercus lobata) is shaped by different gene networks across populations. Mol Ecol 2019; 28:5248-5264. [PMID: 31652373 DOI: 10.1111/mec.15289] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Revised: 10/21/2019] [Accepted: 10/23/2019] [Indexed: 12/16/2022]
Abstract
Drought is a major stress for plants, creating a strong selection pressure for traits that enable plant growth and survival in dry environments. Many drought responses are conserved species-wide responses, while others vary among populations distributed across heterogeneous environments. We tested how six populations of the widely distributed California valley oak (Quercus lobata) sampled from contrasting climates would differ in their response to soil drying relative to well-watered controls in a common environment by measuring ecophysiological traits in 93 individuals and gene expression (RNA-seq) in 42 individuals. Populations did not differ in their adjustment of turgor loss point during soil drying, suggesting a generalized species-wide response. Differential expression analysis identified 689 genes with a common response to treatment across populations and 470 genes with population-specific responses. Weighted gene co-expression network analysis (WGCNA) identified groups of genes with similar expression patterns that may be regulated together (gene modules). Several gene modules responded differently to water stress among populations, suggesting regional differences in gene network regulation. Populations from sites with a high mean annual temperature responded to the imposed water stress with significantly greater changes in gene module expression, indicating that these populations may be locally adapted to respond to drought. We propose that this variation among valley oak populations provides a mechanism for differential tolerance to the increasingly frequent and severe droughts in California.
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Affiliation(s)
- Alayna Mead
- Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA, USA
| | - Juan Peñaloza Ramirez
- Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA, USA
| | - Megan K Bartlett
- Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA, USA
| | - Jessica W Wright
- USDA Forest Service, Pacific Southwest Research Station, Davis, CA, USA
| | - Lawren Sack
- Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA, USA.,Institute of the Environment and Sustainability, University of California, Los Angeles, Los Angeles, CA, USA
| | - Victoria L Sork
- Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA, USA.,Institute of the Environment and Sustainability, University of California, Los Angeles, Los Angeles, CA, USA
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13
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Singh R, Upadhyay AK, Chandra P, Singh DP. Sodium chloride incites reactive oxygen species in green algae Chlorococcum humicola and Chlorella vulgaris: Implication on lipid synthesis, mineral nutrients and antioxidant system. BIORESOURCE TECHNOLOGY 2018; 270:489-497. [PMID: 30245319 DOI: 10.1016/j.biortech.2018.09.065] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/11/2018] [Accepted: 09/12/2018] [Indexed: 05/21/2023]
Abstract
In the present study, microalgae Chlorococcum humicola and Chlorella vulgaris were grown in different concentrations of NaCl (25-1000 mM) to elucidate its impact on morphology, lipid synthesis, minerals status and antioxidative responses. Scanning Electron microscopy showed distorted cell morphology and increased cell size by 33.52% (C. humicola) and 27.79% (C. vulgaris) at 100 mM NaCl. Energy Dispersive Spectroscopy data revealed reduction in mineral contents (C, S, Fe, Mg, Si, Mn and Zn) by 14-54% in both algae. Further, C. humicola was found to have high lipid content than C. vulgaris under NaCl regime. The activities of superoxide dismutase, catalase and glutathione reductase were increased by 2.5-5 folds in both algae as compared to control. The increased level of ascorbate, cysteine and proline in both algae indicated tolerance against salinity. Thus, C. humicola and C. vulgaris may exhibit dual benefits viz., high lipid production and reclamation of sodic soil.
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Affiliation(s)
- R Singh
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, India
| | - A K Upadhyay
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, India
| | - P Chandra
- Department of Environmental Microbiology, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, India
| | - D P Singh
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, India.
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14
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Bechtold U, Ferguson JN, Mullineaux PM. To defend or to grow: lessons from Arabidopsis C24. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:2809-2821. [PMID: 29562306 DOI: 10.1093/jxb/ery106] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
The emergence of Arabidopsis as a model species and the availability of genetic and genomic resources have resulted in the identification and detailed characterization of abiotic stress signalling pathways. However, this has led only to limited success in engineering abiotic stress tolerance in crops. This is because there needs to be a deeper understanding of how to combine resistances to a range of stresses with growth and productivity. The natural variation and genomic resources of Arabidopsis thaliana (Arabidopsis) are a great asset to understand the mechanisms of multiple stress tolerances. One natural variant in Arabidopsis is the accession C24, and here we provide an overview of the increasing research interest in this accession. C24 is highlighted as a source of tolerance for multiple abiotic and biotic stresses, and a key accession to understand the basis of basal immunity to infection, high water use efficiency, and water productivity. Multiple biochemical, physiological, and phenological mechanisms have been attributed to these traits in C24, and none of them constrains productivity. Based on the uniqueness of C24, we postulate that the use of variation derived from natural selection in undomesticated species provides opportunities to better understand how complex environmental stress tolerances and resource use efficiency are co-ordinated.
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Affiliation(s)
- Ulrike Bechtold
- University of Essex, School of Biological Sciences, Wivenhoe Park, Colchester, UK
| | - John N Ferguson
- Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Philip M Mullineaux
- University of Essex, School of Biological Sciences, Wivenhoe Park, Colchester, UK
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Bhaskara GB, Nguyen TT, Yang TH, Verslues PE. Comparative Analysis of Phosphoproteome Remodeling After Short Term Water Stress and ABA Treatments versus Longer Term Water Stress Acclimation. FRONTIERS IN PLANT SCIENCE 2017; 8:523. [PMID: 28443116 PMCID: PMC5386979 DOI: 10.3389/fpls.2017.00523] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 03/24/2017] [Indexed: 05/03/2023]
Abstract
Several studies have used short term dehydration, osmotic stress or Abscisic Acid (ABA) treatments to identify the initial protein phosphorylation-dephosphorylation responses to drought and low water potential or ABA treatments. However, longer term drought acclimation leads to altered expression of many kinases and phosphatases suggesting that it may also produce unique changes in phosphoproteome composition. To get a better overview of the state of drought-related phosphoproteomics and investigate this question of short versus longer term phosphoproteome regulation, we compared three Arabidopsis thaliana studies analyzing short term phosphoproteome changes to recent data from our laboratory analyzing phosphoproteome changes after a longer drought acclimation treatment. There was very little overlap of phosphoproteins with putative stress-induced phosphorylation or dephosphorylation among these studies. While some of this is due to technical limitations and limited coverage of the phosphoproteome achieved by each study, biological differences and the type of stress treatment used also play a role. This comparative analysis emphasized how both short and long term analysis of physiologically relevant stress treatments, as well as validation of phosphoproteomic data, will be needed to move past just scratching the surface of the stress phosphoproteome. In drought acclimation experiments, distinguishing between changes in protein abundance versus phosphorylation stoichiometry is a key challenge. We discuss initial work in using Arabidopsis seedling transient expression combined with Phos-tag gel analysis as a way to validate drought-induced phosphorylation-dephosphorylation of candidate proteins.
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16
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Wong MM, Chong GL, Verslues PE. Epigenetics and RNA Processing: Connections to Drought, Salt, and ABA? Methods Mol Biol 2017; 1631:3-21. [PMID: 28735388 DOI: 10.1007/978-1-4939-7136-7_1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
There have been great research advances in epigenetics, RNA splicing, and mRNA processing over recent years. In parallel, there have been many advances in abiotic stress and Abscisic Acid (ABA) signaling. Here we overview studies that have examined stress-induced changes in the epigenome and RNA processing as well as cases where disrupting these processes changes the plant response to abiotic stress. We also highlight some examples where specific connections of stress or ABA signaling to epigenetics or RNA processing have been found. By implication, this also points out cases where such mechanistic connections are likely to exist but are yet to be characterized. In the absence of such specific connections to stress signaling, it should be kept in mind that stress sensitivity phenotypes of some epigenetic or RNA processing mutants maybe the result of indirect, pleiotropic effects and thus may perhaps not indicate a direct function in stress acclimation.
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Affiliation(s)
- Min May Wong
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Academia Road, Taipei, 11529, Taiwan.,Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, Academia Sinica, Taipei, 11529, Taiwan.,Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 40227, Taiwan
| | - Geeng Loo Chong
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Academia Road, Taipei, 11529, Taiwan.,Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, Academia Sinica, Taipei, 11529, Taiwan.,Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 40227, Taiwan
| | - Paul E Verslues
- Institute of Plant and Microbial Biology, Academia Sinica, 128 Academia Road, Taipei, 11529, Taiwan. .,Biotechnology Center, National Chung-Hsing University, Taichung, 40227, Taiwan.
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