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Giordano L, Schimmerling M, Panabières F, Allasia V, Keller H. The exodomain of the impaired oomycete susceptibility 1 receptor mediates both endoplasmic reticulum stress responses and abscisic acid signalling during downy mildew infection of Arabidopsis. MOLECULAR PLANT PATHOLOGY 2022; 23:1783-1791. [PMID: 36103373 PMCID: PMC9644275 DOI: 10.1111/mpp.13265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/13/2022] [Accepted: 08/18/2022] [Indexed: 06/15/2023]
Abstract
The phytohormone abscisic acid (ABA) regulates cell growth and plant development, and contributes to defence responses to pathogens. We previously showed that the Arabidopsis malectin-like domain leucine-rich repeat receptor-like kinase (MLD-LRR-RLK) impaired oomycete susceptibility 1 (IOS1) attenuates ABA signalling during infection with the oomycete downy mildew pathogen Hyaloperonospora arabidopsidis. The exodomain of IOS1 with its MLD retains the receptor in the endoplasmic reticulum (ER), where it interacts with the ribophorin HAP6 to dampen a pathogen-induced ER stress response called the unfolded protein response (UPR). The down-regulation of both ABA and UPR signalling probably provides the pathogen with an advantage for infection. Here, we show that ABA-related phenotypes of the ios1-1 mutant, such as up-regulated expression of ABA-responsive genes and hypersensitivity to exogenous ABA application, were reverted by expression of the IOS1 exodomain in the mutant background. Furthermore, knockdown mutants for ER-resident HAP6 showed similarly reduced UPR and ABA signalling, indicating that HAP6 positively regulates both pathways. Our data suggest that the IOS1 exodomain and HAP6 contribute in the ER to the IOS1-mediated interference with ABA and UPR signalling.
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Affiliation(s)
- Laïla Giordano
- Université Côte d'Azur, INRAE, CNRS, UMR1355‐7254, ISASophia AntipolisFrance
| | - Marion Schimmerling
- Université Côte d'Azur, INRAE, CNRS, UMR1355‐7254, ISASophia AntipolisFrance
| | - Franck Panabières
- Université Côte d'Azur, INRAE, CNRS, UMR1355‐7254, ISASophia AntipolisFrance
| | - Valérie Allasia
- Université Côte d'Azur, INRAE, CNRS, UMR1355‐7254, ISASophia AntipolisFrance
| | - Harald Keller
- Université Côte d'Azur, INRAE, CNRS, UMR1355‐7254, ISASophia AntipolisFrance
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Son S, Park SR. Climate change impedes plant immunity mechanisms. FRONTIERS IN PLANT SCIENCE 2022; 13:1032820. [PMID: 36523631 PMCID: PMC9745204 DOI: 10.3389/fpls.2022.1032820] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/14/2022] [Indexed: 06/02/2023]
Abstract
Rapid climate change caused by human activity is threatening global crop production and food security worldwide. In particular, the emergence of new infectious plant pathogens and the geographical expansion of plant disease incidence result in serious yield losses of major crops annually. Since climate change has accelerated recently and is expected to worsen in the future, we have reached an inflection point where comprehensive preparations to cope with the upcoming crisis can no longer be delayed. Development of new plant breeding technologies including site-directed nucleases offers the opportunity to mitigate the effects of the changing climate. Therefore, understanding the effects of climate change on plant innate immunity and identification of elite genes conferring disease resistance are crucial for the engineering of new crop cultivars and plant improvement strategies. Here, we summarize and discuss the effects of major environmental factors such as temperature, humidity, and carbon dioxide concentration on plant immunity systems. This review provides a strategy for securing crop-based nutrition against severe pathogen attacks in the era of climate change.
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Ruggiero A, Punzo P, Van Oosten MJ, Cirillo V, Esposito S, Costa A, Maggio A, Grillo S, Batelli G. Transcriptomic and splicing changes underlying tomato responses to combined water and nutrient stress. FRONTIERS IN PLANT SCIENCE 2022; 13:974048. [PMID: 36507383 PMCID: PMC9732681 DOI: 10.3389/fpls.2022.974048] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 11/07/2022] [Indexed: 06/17/2023]
Abstract
Tomato is a horticultural crop of high economic and nutritional value. Suboptimal environmental conditions, such as limited water and nutrient availability, cause severe yield reductions. Thus, selection of genotypes requiring lower inputs is a goal for the tomato breeding sector. We screened 10 tomato varieties exposed to water deficit, low nitrate or a combination of both. Biometric, physiological and molecular analyses revealed different stress responses among genotypes, identifying T270 as severely affected, and T250 as tolerant to the stresses applied. Investigation of transcriptome changes caused by combined stress in roots and leaves of these two genotypes yielded a low number of differentially expressed genes (DEGs) in T250 compared to T270, suggesting that T250 tailors changes in gene expression to efficiently respond to combined stress. By contrast, the susceptible tomato activated approximately one thousand and two thousand genes in leaves and roots respectively, indicating a more generalized stress response in this genotype. In particular, developmental and stress-related genes were differentially expressed, such as hormone responsive factors and transcription factors. Analysis of differential alternative splicing (DAS) events showed that combined stress greatly affects the splicing landscape in both genotypes, highlighting the important role of AS in stress response mechanisms. In particular, several stress and growth-related genes as well as transcription and splicing factors were differentially spliced in both tissues. Taken together, these results reveal important insights into the transcriptional and post-transcriptional mechanisms regulating tomato adaptation to growth under reduced water and nitrogen inputs.
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Affiliation(s)
- Alessandra Ruggiero
- CNR-IBBR, National Research Council of Italy, Institute of Biosciences and Bioresources, Research Division, Portici, Italy
| | - Paola Punzo
- CNR-IBBR, National Research Council of Italy, Institute of Biosciences and Bioresources, Research Division, Portici, Italy
| | | | - Valerio Cirillo
- Department of Agricultural Sciences, University of Naples, Federico II, Portici, Italy
| | - Salvatore Esposito
- CREA-CI, Council for Agricultural Research and Economics, Research Centre for Cereal and Industrial Crops, Foggia, Italy
| | - Antonello Costa
- CNR-IBBR, National Research Council of Italy, Institute of Biosciences and Bioresources, Research Division, Portici, Italy
| | - Albino Maggio
- Department of Agricultural Sciences, University of Naples, Federico II, Portici, Italy
| | - Stefania Grillo
- CNR-IBBR, National Research Council of Italy, Institute of Biosciences and Bioresources, Research Division, Portici, Italy
| | - Giorgia Batelli
- CNR-IBBR, National Research Council of Italy, Institute of Biosciences and Bioresources, Research Division, Portici, Italy
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Li S, Liu S, Zhang Q, Cui M, Zhao M, Li N, Wang S, Wu R, Zhang L, Cao Y, Wang L. The interaction of ABA and ROS in plant growth and stress resistances. FRONTIERS IN PLANT SCIENCE 2022; 13:1050132. [PMID: 36507454 PMCID: PMC9729957 DOI: 10.3389/fpls.2022.1050132] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 11/08/2022] [Indexed: 05/31/2023]
Abstract
The plant hormone ABA (abscisic acid) plays an extremely important role in plant growth and adaptive stress, including but are not limited to seed germination, stomatal closure, pathogen infection, drought and cold stresses. Reactive oxygen species (ROS) are response molecules widely produced by plant cells under biotic and abiotic stress conditions. The production of apoplast ROS is induced and regulated by ABA, and participates in the ABA signaling pathway and its regulated plant immune system. In this review, we summarize ABA and ROS in apoplast ROS production, plant response to biotic and abiotic stresses, plant growth regulation, ABA signal transduction, and the regulatory relationship between ABA and other plant hormones. In addition, we also discuss the effects of protein post-translational modifications on ABA and ROS related factors.
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Affiliation(s)
- Shenghui Li
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, China
| | - Sha Liu
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, China
| | - Qiong Zhang
- Institute of Pomology, Shandong Academy of Agricultural Sciences, Tai’an, China
| | - Meixiang Cui
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, China
| | - Min Zhao
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, China
| | - Nanyang Li
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, China
| | - Suna Wang
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, China
| | - Ruigang Wu
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, China
| | - Lin Zhang
- School of Basic Medical Sciences, Hubei University of Chinese Medicine, Wuhan, China
| | - Yunpeng Cao
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
| | - Lihu Wang
- School of Landscape and Ecological Engineering, Hebei University of Engineering, Handan, China
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A Novel R2R3-MYB Transcription Factor FtMYB22 Negatively Regulates Salt and Drought Stress through ABA-Dependent Pathway. Int J Mol Sci 2022; 23:ijms232314549. [PMID: 36498877 PMCID: PMC9735685 DOI: 10.3390/ijms232314549] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/18/2022] [Accepted: 11/20/2022] [Indexed: 11/24/2022] Open
Abstract
Tartary buckwheat (Fagopyrum tataricum Gaertn.) is a coarse cereal with strongly abiotic resistance. The MYB family plays a regulatory role in plant growth, development, and responses to biotic and abiotic stresses. However, the characteristics and regulatory mechanisms of MYB transcription factors in Tartary buckwheat remain unclarified. Here, this study cloned the FtMYB22 gene from Tartary buckwheat, and investigated its involvement in responding to individual water deficit and salt stress in Arabidopsis. Sequence analysis highlighted that the N-termini of FtMYB22 contained two highly conserved SANT domains and one conserved domain from the SG20 subfamily. Nucleus-localized FtMYB22 did not have individual transcriptional activation activity. Water deficiency and salt stress induced the high expression of the GUS gene, which was driven by the promoter of FtMYB22. Yeast stress experiments showed that the overexpression of FtMYB22 significantly reduced the growth activity of transgenic yeast under water deficit or salt stress. Consistently, the overexpression of FtMYB22 reduced the salt and water deficit stress resistance of the transgenic plants. In addition, physiological parameters showed that transgenic plants had lower proline and antioxidant enzyme activity under stress conditions. Compared to the wild-type (WT), transgenic plants accumulated more malondialdehyde (MDA), H2O2, and O2−; they also showed higher ion permeability and water loss rates of detached leaves under stress treatments. Notably, FtMYB22 was involved in plant stress resistance through an ABA-dependent pathway. Under stress conditions, the expression of RD29A, RD29B, PP2CA, KIN1, COR15A, and other genes in response to plant stress in transgenic lines was significantly lower than that in the WT (p < 0.05). Furthermore, yeast two-hybrid assay showed that there was a significant interaction between FtMYB22 and the ABA receptor protein RCAR1/2, which functioned in the ABA signal pathway. Altogether, FtMYB22, as a negative regulator, inhibited a variety of physiological and biochemical reactions, affected gene expression and stomatal closure in transgenic plants through the ABA-dependent pathway, and reduced the tolerance of transgenic Arabidopsis to water deficiency and salt stress. Based on these fundamental verifications, further studies would shed light on the hormone signal response mechanism of FtMYB22.
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Kataria R, Kaundal R. TRustDB: A comprehensive bioinformatics resource for understanding the complete Wheat-Stem rust host-pathogen interactome. Database (Oxford) 2022; 2022:6832105. [PMID: 36394420 PMCID: PMC9670741 DOI: 10.1093/database/baac068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 07/10/2022] [Accepted: 11/08/2022] [Indexed: 11/18/2022]
Abstract
The increasing infectious diseases in wheat immensely reduce crop yield and quality, thus affecting global wheat production. The evolution in phytopathogens hinders the understanding of the disease infection mechanisms. TRustDB is an open-access, comprehensive database that is specifically focused on the disease stem rust (also known as black rust) in Triticum aestivum, which is caused by the fungal pathogen Puccinia graminis (Pgt), strains 'Ug99' and '21-0'. The database aims at a broader focus of providing the researchers with comprehensive tools to predict the protein-protein interactions and avail the functional annotations of the proteins involved in the interactions that cause the disease. The network of the predicted interactome can also be visualized on the browser. Various modules for the functional annotations of the host and pathogen proteins such as subcellular localization, functional domains, gene ontology annotations, pathogen orthologs and effector proteins have been implemented. The host proteins that serve as transcription factors, along with the respective Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways are also available, which further enhance the understanding of the disease infection mechanisms and the defense responses of the host. The database is also linked with several other databases such as InterPro, KEGG pathways, Ensembl and National Center for Biotechnology Information (NCBI). TRustDB has a user-friendly web interface, which can be accessed through . Database URL http://bioinfo.usu.edu/trustdb/.
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Affiliation(s)
- Raghav Kataria
- Department of Plants, Soils, and Climate, College of Agriculture and Applied Sciences, Utah State University, Logan, UT 84322, USA
| | - Rakesh Kaundal
- *Corresponding author: Tel: +1 (435) 797-4117; Fax: +1 (435) 797-2766;
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Hawku MD, He F, Bai X, Islam MA, Huang X, Kang Z, Guo J. A R2R3 MYB Transcription Factor, TaMYB391, Is Positively Involved in Wheat Resistance to Puccinia striiformis f. sp. tritici. Int J Mol Sci 2022; 23:14070. [PMID: 36430549 PMCID: PMC9693031 DOI: 10.3390/ijms232214070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 11/06/2022] [Accepted: 11/07/2022] [Indexed: 11/17/2022] Open
Abstract
A biotrophic fungus, Puccinia striiformis f.sp. tritici (Pst), which causes stripe rust disease in wheat is the most yield-limiting factor in wheat production. Plants have complex defense mechanisms against invading pathogens. Hypersensitive response (HR), a kind of programmed cell death (PCD) at the infection site, is among these defense mechanisms. Transcription factors (TFs) play a crucial role in plant defense response against invading pathogens. Myeloblastosis (MYB) TFs are among the largest TFs families that are involved in response to both biotic and abiotic stresses. However, little is known about the mechanisms of MYB TFs during the interaction between wheat and the stripe rust fungus. Here, we identified an R2R3 MYB TF from wheat, designated as TaMYB391, and characterized its functional role during wheat-Pst interaction. Our data indicated that TaMYB391 is induced by Pst infection and exogenous application of salicylic acid (SA) and abscisic acid (ABA). TaMYB391 is localized in the nucleus of both wheat and Nicotiana benthamiana. Transient overexpression of TaMYB391 in N. benthamiana triggered HR-related PCD accompanied by increased electrolyte leakage, high accumulation of reactive oxygen species (ROS), and transcriptional accumulation of SA defense-related genes and HR-specific marker genes. Overexpression of TaMYB391 in wheat significantly enhanced wheat resistance to stripe rust fungus through the induction of pathogenesis-related (PR) genes, ROS accumulation and hypersensitive cell death. On the other hand, RNAi-mediated silencing of TaMYB391 decreased the resistance of wheat to Pst accompanied by enhanced growth of the pathogen. Together our findings demonstrate that TaMYB391 acts as a positive regulator of HR-associated cell death and positively contributes to the resistance of wheat to the stripe rust fungus by regulating certain PR genes, possibly through SA signaling pathways.
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Affiliation(s)
- Mehari Desta Hawku
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Xianyang 712100, China
- Department of Crop Science, College of Agriculture, Animal Science and Veterinary Medicine, University of Rwanda, Musanze P.O. Box 210, Rwanda
| | - Fuxin He
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Xianyang 712100, China
| | - Xingxuan Bai
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Xianyang 712100, China
| | - Md Ashraful Islam
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Xianyang 712100, China
| | - Xueling Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Xianyang 712100, China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Xianyang 712100, China
| | - Jun Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Xianyang 712100, China
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Lal MK, Tiwari RK, Kumar A, Dey A, Kumar R, Kumar D, Jaiswal A, Changan SS, Raigond P, Dutt S, Luthra SK, Mandal S, Singh MP, Paul V, Singh B. Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11212857. [PMID: 36365310 PMCID: PMC9654185 DOI: 10.3390/plants11212857] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/21/2022] [Accepted: 10/23/2022] [Indexed: 05/14/2023]
Abstract
Most cultivated potatoes are tetraploid, and the tuber is the main economic part that is consumed due to its calorific and nutritional values. Recent trends in climate change led to the frequent occurrence of heat and drought stress in major potato-growing regions worldwide. The optimum temperature for tuber production is 15-20 °C. High-temperature and water-deficient conditions during the growing season result in several morphological, physiological, biochemical, and molecular alterations. The morphological changes under stress conditions may affect the process of stolon formation, tuberization, and bulking, ultimately affecting the tuber yield. This condition also affects the physiological responses, including an imbalance in the allocation of photoassimilates, respiration, water use efficiency, transpiration, carbon partitioning, and the source-sink relationship. The biochemical responses under stress conditions involve maintaining ionic homeostasis, synthesizing heat shock proteins, achieving osmolyte balance, and generating reactive oxygen species, ultimately affecting various biochemical pathways. Different networks that include both gene regulation and transcription factors are involved at the molecular level due to the combination of hot and water-deficient conditions. This article attempts to present an integrative content of physio-biochemical and molecular responses under the combined effects of heat and drought, prominent factors in climate change. Taking into account all of these aspects and responses, there is an immediate need for comprehensive screening of germplasm and the application of appropriate approaches and tactics to produce potato cultivars that perform well under drought and in heat-affected areas.
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Affiliation(s)
- Milan Kumar Lal
- ICAR-Central Potato Research Institute, Shimla 171001, India
- ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
- Correspondence: (M.K.L.); (R.K.T.); Tel.: +91-9718815448 (M.K.L.)
| | - Rahul Kumar Tiwari
- ICAR-Central Potato Research Institute, Shimla 171001, India
- ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
- Correspondence: (M.K.L.); (R.K.T.); Tel.: +91-9718815448 (M.K.L.)
| | - Awadhesh Kumar
- ICAR-National Rice Research Institute, Cuttack 753006, India
| | - Abhijit Dey
- Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata 700073, India
| | - Ravinder Kumar
- ICAR-Central Potato Research Institute, Shimla 171001, India
| | | | - Arvind Jaiswal
- ICAR-Central Potato Research Institute Campus, Jalandhar 144026, India
| | | | - Pinky Raigond
- ICAR-Central Potato Research Institute, Shimla 171001, India
| | - Som Dutt
- ICAR-Central Potato Research Institute, Shimla 171001, India
| | | | - Sayanti Mandal
- Department of Biotechnology, D. Y. Patil Arts, Commerce and Science College, Sant Tukaram Nagar, Pimpri, Pune 411018, India
| | - Madan Pal Singh
- ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
| | - Vijay Paul
- ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
| | - Brajesh Singh
- ICAR-Central Potato Research Institute, Shimla 171001, India
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Molecular Characterization and Drought Resistance of GmNAC3 Transcription Factor in Glycine max (L.) Merr. Int J Mol Sci 2022; 23:ijms232012378. [PMID: 36293235 PMCID: PMC9604218 DOI: 10.3390/ijms232012378] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/05/2022] [Accepted: 10/14/2022] [Indexed: 11/07/2022] Open
Abstract
Soybean transcription factor GmNAC plays important roles in plant resistance to environmental stresses. In this study, GmNAC3 was cloned in the drought tolerant soybean variety “Jiyu47”, with the molecular properties of GmNAC3 characterized to establish its candidacy as a NAC transcription factor. The yeast self-activation experiments revealed the transcriptional activation activity of GmNAC3, which was localized in the nucleus by the subcellular localization analysis. The highest expression of GmNAC3 was detected in roots in the podding stage of soybean, and in roots of soybean seedlings treated with 20% PEG6000 for 12 h, which was 16 times higher compared with the control. In the transgenic soybean hairy roots obtained by the Agrobacterium-mediated method treated with 20% PEG6000 for 12 h, the activities of superoxide dismutase, peroxidase, and catalase and the content of proline were increased, the malondialdehyde content was decreased, and the expressions of stress resistance-related genes (i.e., APX2, LEA14, 6PGDH, and P5CS) were up-regulated. These expression patterns were confirmed by transgenic Arabidopsis thaliana with the overexpression of GmNAC3. This study provided strong scientific evidence to support further investigation of the regulatory function of GmNAC3 in plant drought resistance and the molecular mechanisms regulating the plant response to environmental stresses.
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Lim J, Lim CW, Lee SC. Role of pepper MYB transcription factor CaDIM1 in regulation of the drought response. FRONTIERS IN PLANT SCIENCE 2022; 13:1028392. [PMID: 36304389 PMCID: PMC9592997 DOI: 10.3389/fpls.2022.1028392] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Abscisic acid (ABA) is a major phytohormone that plays important roles in stress responses, including regulation of gene expression and stomatal closure. Regulation of gene expression by transcription factors is a key cellular process for initiating defense responses to biotic and abiotic stresses. Here, using pepper (Capsicum annuum) leaves, we identified the MYB transcription factor CaDIM1 (Capsicum annuum Drought Induced MYB 1), which was highly induced by ABA and drought stress. CaDIM1 has an MYB domain in the N-terminal region and an acidic domain in the C-terminal region, which are responsible for recognition and transactivation of the target gene, respectively. Compared to control plants, CaDIM1-silenced pepper plants displayed ABA-insensitive and drought-sensitive phenotypes with reduced expression of stress-responsive genes. On the other hand, overexpression of CaDIM1 in Arabidopsis exhibited the opposite phenotypes of CaDIM1-silenced pepper plants, accompanied by enhanced ABA sensitivity and drought tolerance. Taken together, we demonstrate that CaDIM1 functions as a positive regulator of the drought-stress response via modulating ABA-mediated gene expression.
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Baoxiang W, Bo X, Yan L, Jingfang L, Zhiguang S, Ming C, Yungao X, Bo Y, Jian L, Jinbo L, Tingmu C, Zhaowei F, Baiguan L, Dayong X, Bello BK. A Novel mechanisms of the signaling cascade associated with the SAPK10-bZIP20-NHX1 synergistic interaction to enhance tolerance of plant to abiotic stress in rice (Oryza sativa L.). PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 323:111393. [PMID: 35878697 DOI: 10.1016/j.plantsci.2022.111393] [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: 04/13/2022] [Revised: 07/11/2022] [Accepted: 07/17/2022] [Indexed: 06/15/2023]
Abstract
The bzip transcription factors can modulate the transcriptional expressions of target genes by binding specifically to cis-regulatory elements in the promoter region of stress-related genes, hence regulating plant stress resistance. Here, we investigated a stress-responsive transcription factor Osbzip20 under abiotic stresses. The OsbZIP20-GFP fusion protein predominantly aggregated in the nucleus, in accordance with our subcellular localization. OsbZIP20 transcript was observed in all vegetative tissues with highest levels being detected in the seed. Transcription of Osbzip20 was induced by salinity, exsiccation, and abscisic acid. Overexpression of OsbZIP20 in transgenic rice considerably improved tolerance to salt and drought stresses, as well as increased sensitivity to ABA. Furthermore, abiotic stress responsive genes transcript were found to be remarkably elevated in transgenic rice overexpressing OsbZIP20 than in wild-type plants. SAPK10 was discovered to directly interact with and phosphorylate OsbZIP20. Yeast one-hybrid and luciferase assay revealed that OsbZIP20 acted as a transcriptional stimulator. Interestingly, gel shift assay showed that phosphorylated bZIP20 augmented its DNA-binding affinity to the ABRE element of the NHX1 promoter and induced its transcription. In sum, our findings establish a novel signaling pathway associated with the SAPK10-bZIP20-NHX1 synergistic interaction, as well as a new strategy for enhancing rice drought and salt tolerance.
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Affiliation(s)
- Wang Baoxiang
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Xu Bo
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Liu Yan
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Li Jingfang
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Sun Zhiguang
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Chi Ming
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Xing Yungao
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Yang Bo
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Li Jian
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Liu Jinbo
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Chen Tingmu
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Fang Zhaowei
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Lu Baiguan
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China
| | - Xu Dayong
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China.
| | - Babatunde Kazeem Bello
- Lianyungang Institute of Agricultural Sciences, Collaborative Innovation Center for Modern Crop Production, Lianyungang, Jiangsu province 222006, China.
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Wyrzykowska A, Bielewicz D, Plewka P, Sołtys‐Kalina D, Wasilewicz‐Flis I, Marczewski W, Jarmolowski A, Szweykowska‐Kulinska Z. The MYB33, MYB65, and MYB101 transcription factors affect Arabidopsis and potato responses to drought by regulating the ABA signaling pathway. PHYSIOLOGIA PLANTARUM 2022; 174:e13775. [PMID: 36050907 PMCID: PMC9828139 DOI: 10.1111/ppl.13775] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/18/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
Drought is one of the main climate threats limiting crop production. Potato is one of the four most important food crop species worldwide and is sensitive to water shortage. The CBP80 gene was shown to affect Arabidopsis and potato responses to drought by regulating the level of microRNA159 and, consequently, the levels of the MYB33 and MYB101 transcription factors (TFs). Here, we show that three MYB TFs, MYB33, MYB65, and MYB101, are involved in plant responses to water shortage. Their downregulation in Arabidopsis causes stomatal hyposensitivity to abscisic acid (ABA), leading to reduced tolerance to drought. Transgenic Arabidopsis and potato plants overexpressing these genes, with a mutated recognition site in miR159, show hypersensitivity to ABA and relatively high tolerance to drought conditions. Thus, the MYB33, MYB65, and MYB101 genes may be potential targets for innovative breeding to obtain crops with relatively high tolerance to drought.
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Affiliation(s)
- Anna Wyrzykowska
- Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of BiologyAdam Mickiewicz UniversityPoznańWielkopolskiePoland
| | - Dawid Bielewicz
- Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of BiologyAdam Mickiewicz UniversityPoznańWielkopolskiePoland
| | - Patrycja Plewka
- Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of BiologyAdam Mickiewicz UniversityPoznańWielkopolskiePoland
| | - Dorota Sołtys‐Kalina
- Plant Breeding and Acclimatization Institute – National Research InstituteMłochówMasovian VoivodeshipPoland
| | - Iwona Wasilewicz‐Flis
- Plant Breeding and Acclimatization Institute – National Research InstituteMłochówMasovian VoivodeshipPoland
| | - Waldemar Marczewski
- Plant Breeding and Acclimatization Institute – National Research InstituteMłochówMasovian VoivodeshipPoland
| | - Artur Jarmolowski
- Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of BiologyAdam Mickiewicz UniversityPoznańWielkopolskiePoland
| | - Zofia Szweykowska‐Kulinska
- Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of BiologyAdam Mickiewicz UniversityPoznańWielkopolskiePoland
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63
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Wang S, Wu H, Cao X, Fan W, Li C, Zhao H, Wu Q. Tartary buckwheat FtMYB30 transcription factor improves the salt/drought tolerance of transgenic Arabidopsis in an ABA-dependent manner. PHYSIOLOGIA PLANTARUM 2022; 174:e13781. [PMID: 36121384 DOI: 10.1111/ppl.13781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/23/2022] [Accepted: 09/16/2022] [Indexed: 06/15/2023]
Abstract
Drought and high salinity affect plant growth, development, yield, and quality. MYB transcription factors (TFs) in plants play an indispensable regulatory role in resisting adverse stress. In this study, screening and functional validation of the TF FtMYB30, which can respond extensively to abiotic stress and abscisic acid (ABA), was achieved in Tartary buckwheat. FtMYB30, one of the SG22 (sub-group 22) family of R2R3-MYB TFs, localized in the nucleus and had transcriptional activation activity. Under drought and salt stress, FtMYB30 overexpression reduced the oxidative damage in transgenic plants by increasing the activity of proline content and antioxidant enzymes and significantly upregulate the expression of RD29A, RD29B, and Cu/ZnSOD, thereby enhancing drought/salt tolerance in transgenic Arabidopsis. Additionally, overexpression of FtMYB30 can reduce the sensitivity of transgenic plants to ABA. Moreover, AtRCAR1/2/3 and AtMPK6 directly interact with the FtMYB30 TF, possibly through the crosstalk between MAPKs (mitogen-activated protein kinases) and the ABA signaling pathway. Taken together, these results suggest that FtMYB30, as a positive regulator, mediates plant tolerance to salt and drought through an ABA-dependent signaling pathway.
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Affiliation(s)
- Shuang Wang
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - Huala Wu
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - Xinxian Cao
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - Wenjing Fan
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - Chenglei Li
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - Haixia Zhao
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - Qi Wu
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, China
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64
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Ren W, Zhang C, Wang M, Zhang C, Xu X, Huang Y, Chen Y, Lin Y, Lai Z. Genome-wide identification, evolution analysis of LysM gene family members and their expression analysis in response to biotic and abiotic stresses in banana (Musa L.). Gene X 2022; 845:146849. [PMID: 36044944 DOI: 10.1016/j.gene.2022.146849] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
LysM (Lysin motif), in response to pathogenic molecular stresses, is a crucial signal recognition gene. To understand the molecular characteristics of banana LysM gene family members, we used a series of bioinformatics methods. Based on the genomic databases of Musa acuminata, Musa balbisiana and Musa itinerans, a total of 53 genes and 55 proteins were identified, with 21 genes and 23 proteins in the M.acuminata, 16 genes and 16 proteins in each of M.balbisiana and M.itinerans, respectively. According to the conserved structural domains, LysM can be divided into five classes, namely LysM&MltD, LYK, LYP, LysMn, and LysMe. The LysM gene was relatively highly conserved in the evolution of the three genomes of banana, and some differences occurred. Expression analysis revealed that MaLysM4-5 was relatively highly expressed under high-temperature stress, low-temperature stress and pathogen infection; at the same time, about one-third of the members were down-regulated under low-temperature stress and high-temperature stress, while the expression of MaLysM10-1 and MaLysM4-5 were up-regulated. After the banana wilt fungus FocTR4 infected the banana roots, MaLysM1 was down-regulated and MaLysM11-1 was up-regulated. In conclusion, our study suggests that MaLysMs may be necessary in the response to high- and low-temperature stresses, as well as the banana wilt fungus infestation. Overall, this paper found that LysM genes may be involved in biotic and abiotic stresses in banana, and provided helpful information about LysM's evolution, expression and properties, which will provide theoretical references for further studies on the functions of LysM genes and resistance breeding in the future.
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Affiliation(s)
- Wenhui Ren
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chengyu Zhang
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mengge Wang
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chunyu Zhang
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaoqiong Xu
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuji Huang
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yukun Chen
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuling Lin
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhongxiong Lai
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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65
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Drought Stress Stimulates the Terpenoid Backbone and Triterpenoid Biosynthesis Pathway to Promote the Synthesis of Saikosaponin in Bupleurum chinense DC. Roots. Molecules 2022; 27:molecules27175470. [PMID: 36080237 PMCID: PMC9457724 DOI: 10.3390/molecules27175470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/17/2022] Open
Abstract
Bupleurum chinense is an important medicinal plant in China; however, little is known regarding how this plant transcribes and synthesizes saikosaponins under drought stress. Herein, we investigated how drought stress stimulates the transcriptional changes of B. chinense to synthesize saikosaponins. Short-term drought stress induced the accumulation of saikosaponins, especially from the first re-watering stage (RD_1 stage) to the second re-watering stage (RD_2 stage). Saikosaponin-a and saikosaponin-d increased by 84.60% and 75.13%, respectively, from the RD_1 stage to the RD_2 stage. Drought stress also stimulated a rapid increase in the levels of the hormones abscisic acid, salicylic acid, and jasmonic acid. We screened 49 Unigenes regarding the terpenoid backbone and triterpenoid biosynthesis, of which 33 differential genes were significantly up-regulated during drought stress. Moreover, one P450 and two UGTs are possibly involved in the synthesis of saikosaponins, while some transcription factors may be involved in regulating the expression of key enzyme genes. Our study provides a reference for the cultivation of B. chinense and a practical means to ensure the quality (safety and effectiveness) of B. chinense for medicinal use, as well as insights into the modernization of the China Agriculture Research System.
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Wang L, Li H, Li J, Li G, Zahid MS, Li D, Ma C, Xu W, Song S, Li X, Wang S. Transcriptome analysis revealed the expression levels of genes related to abscisic acid and auxin biosynthesis in grapevine ( Vitis vinifera L.) under root restriction. FRONTIERS IN PLANT SCIENCE 2022; 13:959693. [PMID: 36092429 PMCID: PMC9449541 DOI: 10.3389/fpls.2022.959693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
The root system is essential for the stable growth of plants. Roots help anchor plants in the soil and play a crucial role in water uptake, mineral nutrient absorption and endogenous phytohormone formation. Root-restriction (RR) cultivation, a powerful technique, confines plant roots to a specific soil space. In the present study, roots of one-year-old "Muscat Hamburg" grapevine under RR and control (nR) treatments harvested at 70 and 125 days after planting were used for transcriptome sequencing, and in total, 2031 (nR7 vs. nR12), 1445 (RR7 vs. RR12), 1532 (nR7 vs. RR7), and 2799 (nR12 vs. RR12) differentially expressed genes (DEGs) were identified. Gene Ontology (GO) enrichment analysis demonstrated that there were several genes involved in the response to different phytohormones, including abscisic acid (ABA), auxin (IAA), ethylene (ETH), gibberellins (GAs), and cytokinins (CTKs). Among them, multiple genes, such as PIN2 and ERF113, are involved in regulating vital plant movements by various phytohormone pathways. Moreover, following RR cultivation, DEGs were enriched in the biological processes of plant-type secondary cell wall biosynthesis, the defense response, programmed cell death involved in cell development, and the oxalate metabolic process. Furthermore, through a combined analysis of the transcriptome and previously published microRNA (miRNA) sequencing results, we found that multiple differentially expressed miRNAs (DEMs) and DEG combinations in different comparison groups exhibited opposite trends, indicating that the expression levels of miRNAs and their target genes were negatively correlated. Furthermore, RR treatment indeed significantly increased the ABA content at 125 days after planting and significantly decreased the IAA content at 70 days after planting. Under RR cultivation, most ABA biosynthesis-related genes were upregulated, while most IAA biosynthesis-related genes were downregulated. These findings lay a solid foundation for further establishing the network through which miRNAs regulate grapevine root development through target genes and for further exploring the molecular mechanism through which endogenous ABA and IAA regulate root architecture development in grapevine.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Xiangyi Li
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Shiping Wang
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
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67
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Son S, Im JH, Song G, Nam S, Park SR. OsWRKY114 Inhibits ABA-Induced Susceptibility to Xanthomonas oryzae pv. oryzae in Rice. Int J Mol Sci 2022; 23:ijms23158825. [PMID: 35955958 PMCID: PMC9369203 DOI: 10.3390/ijms23158825] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/04/2022] [Accepted: 08/05/2022] [Indexed: 11/16/2022] Open
Abstract
The phytohormone abscisic acid (ABA) regulates various aspects of plant growth, development, and stress responses. ABA suppresses innate immunity to Xanthomonas oryzae pv. oryzae (Xoo) in rice (Oryza sativa), but the identity of the underlying regulator is unknown. In this study, we revealed that OsWRKY114 is involved in the ABA response during Xoo infection. ABA-induced susceptibility to Xoo was reduced in OsWRKY114-overexpressing rice plants. OsWRKY114 attenuated the negative effect of ABA on salicylic acid-dependent immunity. Furthermore, OsWRKY114 decreased the transcript levels of ABA-associated genes involved in ABA response and biosynthesis. Moreover, the endogenous ABA level was lower in OsWRKY114-overexpressing plants than in the wild-type plants after Xoo inoculation. Taken together, our results suggest that OsWRKY114 is a negative regulator of ABA that confers susceptibility to Xoo in rice.
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Affiliation(s)
- Seungmin Son
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Korea
| | - Jong Hee Im
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Korea
- Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
| | - Giha Song
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Korea
| | - Suhyeon Nam
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Korea
- Department of Crop Science & Biotechnology, Jeonbuk National University, Jeonju 54896, Korea
| | - Sang Ryeol Park
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 54874, Korea
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68
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Uncovering a Phenomenon of Active Hormone Transcriptional Regulation during Early Somatic Embryogenesis in Medicago sativa. Int J Mol Sci 2022; 23:ijms23158633. [PMID: 35955760 PMCID: PMC9368939 DOI: 10.3390/ijms23158633] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/30/2022] [Accepted: 08/01/2022] [Indexed: 12/04/2022] Open
Abstract
Somatic embryogenesis (SE) is a developmental process in which somatic cells undergo dedifferentiation to become plant stem cells, and redifferentiation to become a whole embryo. SE is a prerequisite for molecular breeding and is an excellent platform to study cell development in the majority of plant species. However, the molecular mechanism involved in M. sativa somatic embryonic induction, embryonic and maturation is unclear. This study was designed to examine the differentially expressed genes (DEGs) and miRNA roles during somatic embryonic induction, embryonic and maturation. The cut cotyledon (ICE), non-embryogenic callus (NEC), embryogenic callus (EC) and cotyledon embryo (CE) were selected for transcriptome and small RNA sequencing. The results showed that 17,251 DEGs, and 177 known and 110 novel miRNAs families were involved in embryonic induction (ICE to NEC), embryonic (NEC to EC), and maturation (EC to CE). Expression patterns and functional classification analysis showed several novel genes and miRNAs involved in SE. Moreover, embryonic induction is an active process of molecular regulation, and hormonal signal transduction related to pathways involved in the whole SE. Finally, a miRNA–target interaction network was proposed during M. sativa SE. This study provides novel perspectives to comprehend the molecular mechanisms in M. sativa SE.
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69
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Gao Y, Yang J, Duan W, Ma X, Qu L, Xu Z, Yang Y, Xu J. NtRAV4 negatively regulates drought tolerance in Nicotiana tabacum by enhancing antioxidant capacity and defence system. PLANT CELL REPORTS 2022; 41:1775-1788. [PMID: 35789421 DOI: 10.1007/s00299-022-02896-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
KEY MESSAGE NtRAV4 is a nucleus-localised protein and no self-activation effect. ntrav4 mutants maintain the steady state of the ROS system under drought stress by enhancing antioxidant capacity and defence system. The APETALA2/ethylene response factor (AP2/ERF) transcription factor (TF) family plays an important role in plant responses to environmental stresses. In this study, we identified a novel NtRAV4 TF, a member of RAV subfamily among AP2/ERF gene family, which have AP2 and B3 domain in its N- and C-terminus, respectively. Subcellular localisation and self-activation activity analysis revealed that NtRAV4 localised in the nucleus and had no self-activation effect. The overexpression and gene editing vectors of NtRAV4 were constructed by homologous recombination and CRISPR/Cas9 gene editing methods, and transformed into tobacco by agrobacterium-mediated method. ntrav4 led to the appearance of termination codon in advance and lacked the unique B3 domain of RAV subfamily protein. Further analysis displayed that knockout of the NtRAV4 in tobacco increased drought tolerance with high relative water content, accompanied by reduced stomatal aperture, density, and stomatal opening ratio compared to overexpression lines and WT. Moreover, ntrav4 knockout plants also exhibited increased osmotic tolerance with low malondialdehyde (MDA) and ion leakage (EL), less accumulation of O2•- and H2O2, and high enzymatic antioxidant (SOD, POD, CAT) activities, non-enzymatic antioxidant (AsA-GSH cycle) contents and hormone (IAA, ABA, GA3, and ZR) levels under drought stress. Furthermore, ntrav4 mutants in tobacco improved the expression levels of ROS-related proline synthesis and stress-responsive genes under osmotic stress. Our results indicate that NtRAV4 negatively regulates plant tolerance to drought stress by reducing water loss and activating the antioxidant system and stress-related gene expression to maintain the steady state of the ROS system.
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Affiliation(s)
- Yun Gao
- National Tobacco Cultivation and Physiology and Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Jie Yang
- China Tobacco Sichuan Industrial Co., Ltd, Chengdu, 610000, China
| | - Wangjun Duan
- China Tobacco Sichuan Industrial Co., Ltd, Chengdu, 610000, China
| | - Xiaohan Ma
- National Tobacco Cultivation and Physiology and Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Lili Qu
- National Tobacco Cultivation and Physiology and Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Zicheng Xu
- National Tobacco Cultivation and Physiology and Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China
| | - Yongxia Yang
- National Tobacco Cultivation and Physiology and Biochemistry Research Centre, College of Tobacco Science, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Jiayang Xu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou, 450002, China.
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70
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Wang H, Zhang D, Zhou X, Zhou G, Zong W, Chen L, Chang Y, Wu X. Transcription Factor AtOFP1 Involved in ABA-Mediated Seed Germination and Root Growth through Modulation of ROS Homeostasis in Arabidopsis. Int J Mol Sci 2022; 23:ijms23137427. [PMID: 35806432 PMCID: PMC9267126 DOI: 10.3390/ijms23137427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/22/2022] [Accepted: 06/28/2022] [Indexed: 02/05/2023] Open
Abstract
Ovate family proteins (OFPs) are valued as a family of transcription factors that are unique to plants, and they play a pluripotent regulatory role in plant growth and development, including secondary-cell-wall synthesis, DNA repair, gibberellin synthesis, and other biological processes, via their interaction with TALE family proteins. In this study, CHIP-SEQ was used to detect the potential target genes of AtOFP1 and its signal-regulation pathways. On the other hand, Y2H and BIFC were employed to prove that AtOFP1 can participate in ABA signal transduction by interacting with one of the TALE family protein called AtKNAT3. ABA response genes are not only significantly upregulated in the 35S::HAOFP1 OE line, but they also show hypersensitivity to ABA in terms of seed germination and early seedling root elongation. In addition, the AtOFP1-regulated target genes are mainly mitochondrial membranes that are involved in the oxidative–phosphorylation pathway. Further qRT-PCR results showed that the inefficient splicing of the respiratory complex I subunit genes NAD4 and NAD7 may lead to ROS accumulation in 35S::HA-AtOFP1 OE lines. In conclusion, we speculated that the overexpression of AtOFP1 may cause the ABA hypersensitivity response by increasing the intracellular ROS content generated from damage to the intima systems of mitochondria.
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Affiliation(s)
- Hemeng Wang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (H.W.); (D.Z.)
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Dongrui Zhang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (H.W.); (D.Z.)
| | - Xi’nan Zhou
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
| | - Ganghua Zhou
- Key Laboratory of Molecular Epigenetics of MOE, Institute of Genetics and Cytology, Northeast Normal University, Changchun 130024, China;
| | - Wenbo Zong
- Department of Biochemistry and Molecular Biology, College of Basic Medical Science, Jilin University, Changchun 130021, China;
| | - Lingling Chen
- MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China;
| | - Ying Chang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (H.W.); (D.Z.)
- Correspondence: (Y.C.); (X.W.)
| | - Xiaoxia Wu
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
- Correspondence: (Y.C.); (X.W.)
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71
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Asghar S, Xiong Y, Che M, Fan X, Li H, Wang Y, Xu X, Li W, Han Z. Transcriptome analysis reveals the effects of strigolactone on shoot regeneration of apple. PLANT CELL REPORTS 2022; 41:1613-1626. [PMID: 35680714 DOI: 10.1007/s00299-022-02882-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/05/2022] [Indexed: 06/15/2023]
Abstract
We have demonstrated that strigolactone inhibitor, Tis108, could be used to improve shoot regeneration of apple, and provided insights into the molecular mechanism of strigolactone-mediated inhibition of adventitious shoot formation. Lack of an efficient transformation system largely stagnated the application of transgenic and CRISPR technology in apple rootstock. High shoot regeneration ability is an important basis for establishing an effective transformation system. In this study, we first demonstrated the inhibitory effects of strigolactones on the adventitious shoot formation of apple rootstock M26. Next, we successfully verified that strigolactone-biosynthesis inhibitor, Tis108, could be used to improve the shoot regeneration of woody plants. Our results also suggest strigolactone-biosynthesis gene, MdCCD7, can be a target gene for biotechnological improvements of shoot regeneration capacity. Furthermore, we have employed transcriptome analysis to reveal the molecular mechanism of strigolactone-mediated inhibition of adventitious shoot formation. Differentially expressed genes associated with photosynthesis, secondary growth, and organ development were identified. WGCNA suggests SLs might affect shoot regeneration through interaction with other hormones, especially, auxin, cytokinin, and ethylene. We were able to identify important candidate genes mediating the cross-talk between strigolactone and other hormones during the process of adventitious shoot formation. Overall, our findings not only propose a useful chemical for improving shoot regeneration in practice but also provide insights into the molecular mechanism of strigolactone-mediated inhibition of adventitious shoot formation.
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Affiliation(s)
- Sumeera Asghar
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yao Xiong
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Meng Che
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xingqiang Fan
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Hui Li
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yi Wang
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xuefeng Xu
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Wei Li
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, 100193, China.
| | - Zhenhai Han
- State Key Laboratory of Agrobiotechnology, College of Horticulture, China Agricultural University, Beijing, 100193, China.
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72
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Ghosh S, Zhang S, Azam M, Agyenim-Boateng KG, Qi J, Feng Y, Li Y, Li J, Li B, Sun J. Identification of Genomic Loci and Candidate Genes Related to Seed Tocopherol Content in Soybean. PLANTS (BASEL, SWITZERLAND) 2022; 11:1703. [PMID: 35807655 PMCID: PMC9269242 DOI: 10.3390/plants11131703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Soybean seeds are primary sources of natural tocopherols used by the food and pharmaceutical industries, owing to their beneficial impacts on human health. Selection for higher tocopherol contents in seeds along with other desirable traits is an important goal in soybean breeding. In order to identify the genomic loci and candidate genes controlling tocopherol content in soybean seeds, the bulked-segregant analysis technique was performed using a natural population of soybean consisting of 1525 accessions. We constructed the bulked-segregant analysis based on 98 soybean accessions that showed extreme phenotypic variation for the target trait, consisting of 49 accessions with extremely-high and 49 accessions with extremely-low tocopherol content. A total of 144 variant sites and 109 predicted genes related to tocopherol content were identified, in which a total of 83 genes were annotated by the gene ontology functions. Furthermore, 13 enriched terms (p < 0.05) were detected, with four of them found to be highly enriched: response to lipid, response to abscisic acid, transition metal ion transmembrane transporter activity, and double-stranded DNA binding. Especially, six candidate genes were detected at 41.8−41.9 Mb genomic hotspots on chromosome 5 based on ANNOtate VARiation analysis. Among the genes, only Glyma.05G243400 carried a non-synonymous mutation that encodes a “translation elongation factor EF1A or initiation factor IF2gamma family protein” was identified. The haplotype analysis confirmed that Glyma.05G243400 exhibited highly significant variations in terms of tocopherol content across multiple experimental locations, suggesting that it can be the key candidate gene regulating soybean seed tocopherols. The present findings provide novel gene resources related to seed tocopherols for further validation by genome editing, functional characterization, and genetic improvement targeting enhanced tocopherol composition in soybean molecular breeding.
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Affiliation(s)
- Suprio Ghosh
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
- Bangladesh Agricultural Research Institute, Gazipur 1701, Bangladesh
| | - Shengrui Zhang
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
| | - Muhammad Azam
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
| | - Kwadwo Gyapong Agyenim-Boateng
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
| | - Jie Qi
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
| | - Yue Feng
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
| | - Yecheng Li
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
| | - Jing Li
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
| | - Bin Li
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
| | - Junming Sun
- The National Engineering Research Center of Crop Molecular Breeding, MARA Key Laboratory of Soybean Biology (Beijing), Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, 12 Zhongguancun South Street, Beijing 100081, China; (S.G.); (S.Z.); (M.A.); (K.G.A.-B.); (J.Q.); (Y.F.); (Y.L.); (J.L.)
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Yang Y, Karthikeyan A, Yin J, Jin T, Ren R, Fang F, Cai H, Liu M, Wang D, Li K, Zhi H. The E3 Ligase GmPUB21 Negatively Regulates Drought and Salinity Stress Response in Soybean. Int J Mol Sci 2022; 23:6893. [PMID: 35805901 PMCID: PMC9266294 DOI: 10.3390/ijms23136893] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 06/17/2022] [Accepted: 06/20/2022] [Indexed: 01/27/2023] Open
Abstract
E3-ubiquitin ligases are known to confer abiotic stress responses in plants. In the present study, GmPUB21, a novel U-box E3-ubiquitin ligase-encoding gene, was isolated from soybean and functionally characterized. The expression of GmPUB21, which possesses E3-ubiquitin ligase activity, was found to be significantly up-regulated by drought, salinity, and ABA treatments. The fusion protein GmPUB21-GFP was localized in the cytoplasm, nucleus, and plasma membrane. Transgenic lines of the Nicotiana benthamiana over-expressing GmPUB21 showed more sensitive to osmotic, salinity stress and ABA in seed germination and inhibited mannitol/NaCl-mediated stomatal closure. Moreover, higher reactive oxygen species accumulation was observed in GmPUB21 overexpressing plants after drought and salinity treatment than in wild-type (WT) plants. Contrarily, silencing of GmPUB21 in soybean plants significantly enhanced the tolerance to drought and salinity stresses. Collectively, our results revealed that GmPUB21 negatively regulates the drought and salinity tolerance by increasing the stomatal density and aperture via the ABA signaling pathway. These findings improved our understanding of the role of GmPUB21 under drought and salinity stresses in soybean.
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Affiliation(s)
- Yunhua Yang
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean—Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (J.Y.); (T.J.); (F.F.); (H.C.); (M.L.); (D.W.)
| | - Adhimoolam Karthikeyan
- Subtropical Horticulture Research Institute, Jeju National University, Jeju 63243, Korea;
| | - Jinlong Yin
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean—Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (J.Y.); (T.J.); (F.F.); (H.C.); (M.L.); (D.W.)
| | - Tongtong Jin
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean—Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (J.Y.); (T.J.); (F.F.); (H.C.); (M.L.); (D.W.)
| | - Rui Ren
- Center for Crop Genome Engineering, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China;
| | - Fei Fang
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean—Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (J.Y.); (T.J.); (F.F.); (H.C.); (M.L.); (D.W.)
| | - Han Cai
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean—Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (J.Y.); (T.J.); (F.F.); (H.C.); (M.L.); (D.W.)
| | - Mengzhuo Liu
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean—Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (J.Y.); (T.J.); (F.F.); (H.C.); (M.L.); (D.W.)
| | - Dagang Wang
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean—Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (J.Y.); (T.J.); (F.F.); (H.C.); (M.L.); (D.W.)
| | - Kai Li
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean—Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (J.Y.); (T.J.); (F.F.); (H.C.); (M.L.); (D.W.)
| | - Haijian Zhi
- National Center for Soybean Improvement, National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean—Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, China; (Y.Y.); (J.Y.); (T.J.); (F.F.); (H.C.); (M.L.); (D.W.)
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Chen X, Wang C, He B, Wan Z, Zhao Y, Hu F, Lv Y. Transcriptome Profiling of Transposon-Derived Long Non-coding RNAs Response to Hormone in Strawberry Fruit Development. FRONTIERS IN PLANT SCIENCE 2022; 13:915569. [PMID: 35783970 PMCID: PMC9244616 DOI: 10.3389/fpls.2022.915569] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/02/2022] [Indexed: 06/01/2023]
Abstract
Strawberry is an economically grown horticulture crop required for fruit consumption. The ripening of its fruit is a complex biological process regulated by various hormones. Abscisic acid (ABA) is a critical phytohormone involved in fruit ripening. However, little is known about the long non-coding RNAs (LncRNAs), especially transposon-derived LncRNA (TE-lncRNA), response to hormones during fruit ripening in octoploid strawberry. In the study, the transcriptome data of developing strawberry fruits treated with ABA and its inhibitor Nordihydroguaiaretic acid (NGDA) were analyzed to identify responsive LncRNAs and coding genes. A total of 14,552 LncRNAs were identified, including 8,617 transposon-derived LncRNAs (TE-LncRNAs), 412 LncRNAs (282 TE-LncRNAs), and 382 ABA-sensitive LncRNAs (231 TE-LncRNAs). Additionally, a weighted co-expression network analysis constructed 27 modules containing coding RNAs and LncRNAs. Seven modules, including "MEdarkorange" and "MElightyellow" were significantly correlated with ABA/NDGA treatments, resulting in 247 hub genes, including 21 transcription factors and 22 LncRNAs (15 TE-LncRNAs). Gene ontology enrichment analysis further revealed that ABA/NDGA-responsive modules, including LncRNAs, were associated with various metabolic pathways involved in strawberry fruit development and ripening, including lipid metabolism, organic acid metabolism, and phenylpropanoid metabolism. The current study identifies many high-confidence LncRNAs in strawberry, with a percentage of them being ABA pathway-specific and 22 hub-responsive LncRNAs, providing new insight into strawberry or other Rosaceae crop fruit ripening.
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Affiliation(s)
- Xi Chen
- School of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forest, Zhenjiang, China
- Engineering and Technical Center for Modern Horticulture, Jurong, China
| | - Chengdong Wang
- Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Bing He
- Excellence and Innovation Center, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Zifan Wan
- School of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forest, Zhenjiang, China
- Engineering and Technical Center for Modern Horticulture, Jurong, China
| | - Yukun Zhao
- School of Agronomy and Horticulture, Jiangsu Vocational College of Agriculture and Forest, Zhenjiang, China
- Engineering and Technical Center for Modern Horticulture, Jurong, China
| | - Fengqin Hu
- Excellence and Innovation Center, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Yuanda Lv
- Excellence and Innovation Center, Jiangsu Academy of Agricultural Sciences, Nanjing, China
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75
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Zhang WM, Cheng XZ, Fang D, Cao J. AT-HOOK MOTIF NUCLEAR LOCALIZED (AHL) proteins of ancient origin radiate new functions. Int J Biol Macromol 2022; 214:290-300. [PMID: 35716788 DOI: 10.1016/j.ijbiomac.2022.06.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/11/2022] [Accepted: 06/12/2022] [Indexed: 11/05/2022]
Abstract
AHL (AT-HOOK MOTIF NUCLEAR LOCALIZED) protein is an important transcription factor in plants that regulates a wide range of biological process. It is considered to have evolved from an independent PPC domain in prokaryotes to a complete protein in modern plants. AT-hook motif and PPC conserved domains are the main functional domains of AHL. Since the discovery of AHL, their evolution and function have been continuously studied. The AHL gene family has been identified in multiple species and the functions of several members of the gene family have been studied. Here, we summarize the evolution and structural characteristics of AHL genes, and emphasize their biological functions. This review will provide a basis for further functional study and crop breeding.
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Affiliation(s)
- Wei-Meng Zhang
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Xiu-Zhu Cheng
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Da Fang
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Jun Cao
- School of Life Sciences, Jiangsu University, Zhenjiang 212013, Jiangsu, China.
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Ren C, Kuang Y, Lin Y, Guo Y, Li H, Fan P, Li S, Liang Z. Overexpression of grape ABA receptor gene VaPYL4 enhances tolerance to multiple abiotic stresses in Arabidopsis. BMC PLANT BIOLOGY 2022; 22:271. [PMID: 35655129 PMCID: PMC9161562 DOI: 10.1186/s12870-022-03663-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 05/27/2022] [Indexed: 05/30/2023]
Abstract
BACKGROUND Abscisic acid (ABA) plays a crucial role in abiotic stress responses. The pyrabactin resistance (PYR)/PYR-like (PYL)/regulatory component of ABA receptor (RCAR) proteins that have been characterized as ABA receptors function as the core components in ABA signaling pathway. However, the functions of grape PYL genes in response to different abiotic stresses, particularly cold stress, remain less studied. RESULTS In this study, we investigated the expression profiles of grape PYL genes upon cold treatment and isolated the VaPYL4 gene from Vitis amurensis, a cold-hardy grape species. Overexpression of VaPYL4 gene in grape calli and Arabidopsis resulted in enhanced cold tolerance. Moreover, plant resistance to drought and salt stress was also improved by overexpressing VaPYL4 in Arabidopsis. More importantly, we evaluated the contribution of VaPYL4 to plant growth and development after the treatment with cold, salt and drought stress simultaneously. The transgenic plants showed higher survival rates, earlier flowering phenotype, and heavier fresh weight of seedlings and siliques when compared with wild-type plants. Physiological analyses showed that transgenic plants had much lower content of malondialdehyde (MDA) and higher peroxidase (POD) activity. Stress-responsive genes such as RD29A (Responsive to desiccation 29A), COR15A (Cold responsive 15A) and KIN2 (Kinase 2) were also significantly up-regulated in VaPYL4-overexpressing Arabidopsis plants. CONCLUSIONS Our results show that overexpression of VaPYL4 could improve plant performance upon different abiotic stresses, which therefore provides a useful strategy for engineering future crops to deal with adverse environments.
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Affiliation(s)
- Chong Ren
- Beijing Key Laboratory of Grape Sciences and Enology, Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Nanxin Village 20, Xiangshan, Haidian District, Beijing, 100093 People’s Republic of China
| | - Yangfu Kuang
- Beijing Key Laboratory of Grape Sciences and Enology, Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Nanxin Village 20, Xiangshan, Haidian District, Beijing, 100093 People’s Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Yanping Lin
- Beijing Key Laboratory of Grape Sciences and Enology, Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Nanxin Village 20, Xiangshan, Haidian District, Beijing, 100093 People’s Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Yuchen Guo
- Beijing Key Laboratory of Grape Sciences and Enology, Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Nanxin Village 20, Xiangshan, Haidian District, Beijing, 100093 People’s Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Huayang Li
- Beijing Key Laboratory of Grape Sciences and Enology, Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Nanxin Village 20, Xiangshan, Haidian District, Beijing, 100093 People’s Republic of China
- University of Chinese Academy of Sciences, Beijing, 100049 People’s Republic of China
| | - Peige Fan
- Beijing Key Laboratory of Grape Sciences and Enology, Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Nanxin Village 20, Xiangshan, Haidian District, Beijing, 100093 People’s Republic of China
| | - Shaohua Li
- Beijing Key Laboratory of Grape Sciences and Enology, Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Nanxin Village 20, Xiangshan, Haidian District, Beijing, 100093 People’s Republic of China
| | - Zhenchang Liang
- Beijing Key Laboratory of Grape Sciences and Enology, Key Laboratory of Plant Resource, Institute of Botany, Chinese Academy of Sciences, Nanxin Village 20, Xiangshan, Haidian District, Beijing, 100093 People’s Republic of China
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Ang MCY, Lew TTS. Non-destructive Technologies for Plant Health Diagnosis. FRONTIERS IN PLANT SCIENCE 2022; 13:884454. [PMID: 35712566 PMCID: PMC9197209 DOI: 10.3389/fpls.2022.884454] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 04/29/2022] [Indexed: 06/01/2023]
Abstract
As global population grows rapidly, global food supply is increasingly under strain. This is exacerbated by climate change and declining soil quality due to years of excessive fertilizer, pesticide and agrichemical usage. Sustainable agricultural practices need to be put in place to minimize destruction to the environment while at the same time, optimize crop growth and productivity. To do so, farmers will need to embrace precision agriculture, using novel sensors and analytical tools to guide their farm management decisions. In recent years, non-destructive or minimally invasive sensors for plant metabolites have emerged as important analytical tools for monitoring of plant signaling pathways and plant response to external conditions that are indicative of overall plant health in real-time. This will allow precise application of fertilizers and synthetic plant growth regulators to maximize growth, as well as timely intervention to minimize yield loss from plant stress. In this mini-review, we highlight in vivo electrochemical sensors and optical nanosensors capable of detecting important endogenous metabolites within the plant, together with sensors that detect surface metabolites by probing the plant surface electrophysiology changes and air-borne volatile metabolites. The advantages and limitations of each kind of sensing tool are discussed with respect to their potential for application in high-tech future farms.
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Affiliation(s)
- Mervin Chun-Yi Ang
- Disruptive and Sustainable Technologies for Agricultural Precision IRG, Singapore-MIT Alliance for Research and Technology, Singapore, Singapore
| | - Tedrick Thomas Salim Lew
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
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The R2R3 MYB Transcription Factor MYB71 Regulates Abscisic Acid Response in Arabidopsis. PLANTS 2022; 11:plants11101369. [PMID: 35631794 PMCID: PMC9143609 DOI: 10.3390/plants11101369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/16/2022] [Accepted: 05/19/2022] [Indexed: 11/17/2022]
Abstract
Abscisic acid (ABA) regulates plant responses to abiotic stresses via regulating the expression of downstream genes, yet the functions of many ABA responsive genes remain unknown. We report here the characterization of MYB71, a R2R3 MYB transcription factor in regulating ABA responses in Arabidopsis. RT-PCR results show that the expression level of MYB71 was increased in response to ABA treatment. Arabidopsis protoplasts transfection results show that MYB71 was specifically localized in nucleus and it activated the Gal4:GUS reporter gene when recruited to the Gal4 promoter by a fused DNA binding domain GD. Roles of MYB71 in regulating plant response to ABA were analyzed by generating Arabidopsis transgenic plants overexpression MYB71 and gene edited mutants of MYB71. The results show that ABA sensitivity was increased in the transgenic plants overexpression MYB71, but decreased in the MYB71 mutants. By using a DEX inducible system, we further identified genes are likely regulated by MYB71, and found that they are enriched in biological process to environmental stimuli including abiotic stresses, suggesting that MYB71 may regulate plant response to abiotic stresses. Taken together, our results suggest that MYB71 is an ABA responsive gene, and MYB71 functions as a transcription activator and it positively regulates ABA response in Arabidopsis.
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Su X, Gao T, Zhang P, Li F, Wang D, Tian Y, Lu H, Zhang H, Wei S. Comparative physiological and transcriptomic analysis of sesame cultivars with different tolerance responses to heat stress. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2022; 28:1131-1146. [PMID: 35722520 PMCID: PMC9203651 DOI: 10.1007/s12298-022-01195-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 05/20/2022] [Accepted: 05/22/2022] [Indexed: 05/03/2023]
Abstract
High temperature is the main factor affecting plant growth and can cause plant growth inhibition and yield reduction. Here, seedlings of two contrasting sesame varieties, i.e., Zheng Taizhi 3 (heat-tolerant) and SP19 (heat-sensitive), were treated at 43 °C for 10 days. The results showed that the relative electrical conductivity, hydrogen peroxide levels, and superoxide anion radical levels of both varieties increased significantly under high temperature stress. Additionally, dry matter accumulation and chlorophyll content decreased significantly, and the activities of peroxidase (POD), catalase (CAT), and superoxide dismutase (SOD) increased. However, under HT stress, the content of reactive oxygen species in Zheng Taizhi 3 was lower than that in SP19, and the activities of SOD, CAT, and POD as well as the chlorophyll content in Zheng Taizhi 3 were higher than those in SP19. Comparative transcriptome analysis identified 6736 differentially expressed genes (DEGs); 5526 DEGs (2878 up and 2648 down) were identified in Zheng Taizhi 3, and 5186 DEGs (2695 up and 2491 down) were identified in SP19, with 3976 overlapping DEGs. These DEGs included stress tolerance-related heat-shock proteins, as well as genes related to carbohydrate and energy metabolism, signal transduction, endoplasmic reticulum protein processing, amino acid metabolism, and secondary metabolism. Overall, our results showed that the heat tolerance of Zheng Taizhi 3 was attributed to a stronger antioxidant defense system, enabling the variety to avoid oxidative damage compared with the heat-sensitive SP19. Moreover, some specifically expressed and high-abundance genes in Zheng Taizhi 3 were involved in regulatory mechanisms related to heat tolerance, including plant hormone signal transduction and heat shock protein regulation, thereby enhancing heat tolerance. The study contributes to a deeper understanding of the underlying complex molecular mechanisms involved in the responses of sesame seedlings to heat stress and provides a potential strategy for heat-resistant new varieties. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-022-01195-3.
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Affiliation(s)
- Xiaoyu Su
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, #116 Huayuan Road, Zhengzhou, 450000 Henan People’s Republic of China
- The Shennong Laboratory, Zhengzhou, 450002 Henan People’s Republic of China
| | - Tongmei Gao
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, #116 Huayuan Road, Zhengzhou, 450000 Henan People’s Republic of China
- The Shennong Laboratory, Zhengzhou, 450002 Henan People’s Republic of China
| | - Pengyu Zhang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, #116 Huayuan Road, Zhengzhou, 450000 Henan People’s Republic of China
- The Shennong Laboratory, Zhengzhou, 450002 Henan People’s Republic of China
| | - Feng Li
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, #116 Huayuan Road, Zhengzhou, 450000 Henan People’s Republic of China
| | - Dongyong Wang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, #116 Huayuan Road, Zhengzhou, 450000 Henan People’s Republic of China
| | - Yuan Tian
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, #116 Huayuan Road, Zhengzhou, 450000 Henan People’s Republic of China
| | - Hailing Lu
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, #116 Huayuan Road, Zhengzhou, 450000 Henan People’s Republic of China
| | - Haiyang Zhang
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, #116 Huayuan Road, Zhengzhou, 450000 Henan People’s Republic of China
- The Shennong Laboratory, Zhengzhou, 450002 Henan People’s Republic of China
| | - Shuangling Wei
- Henan Sesame Research Center, Henan Academy of Agricultural Sciences, #116 Huayuan Road, Zhengzhou, 450000 Henan People’s Republic of China
- The Shennong Laboratory, Zhengzhou, 450002 Henan People’s Republic of China
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Hu Y, Ding Y, Cai B, Qin X, Wu J, Yuan M, Wan S, Zhao Y, Xin XF. Bacterial effectors manipulate plant abscisic acid signaling for creation of an aqueous apoplast. Cell Host Microbe 2022; 30:518-529.e6. [PMID: 35247331 DOI: 10.1016/j.chom.2022.02.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 12/05/2021] [Accepted: 02/02/2022] [Indexed: 01/23/2023]
Abstract
Phytopathogens like Pseudomonas syringae induce "water soaking" in the apoplastic space of plant leaf tissue as a key virulence mechanism. Water soaking is commonly observed in diverse pathosystems, yet the underlying physiological basis remains largely elusive. Here, we show that one of the strong P. syringae water-soaking inducers, AvrE, alters the regulation of abscisic acid (ABA) to induce ABA signaling, stomatal closure, and, thus, water soaking. AvrE binds and inhibits the function of Arabidopsis type one protein phosphatases (TOPPs), which negatively regulate ABA by suppressing SnRK2s, a key node of the ABA signaling pathway. The topp12537 quintuple mutants display significantly enhanced water soaking after P. syringae inoculation, whereas the loss of the ABA pathway dampens P. syringae-induced water soaking and disease. Our study uncovers the hijacking of ABA signaling and stomatal closure by P. syringae effectors as key mechanisms of disease susceptibility.
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Affiliation(s)
- Yezhou Hu
- National key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Yanxia Ding
- National key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Boying Cai
- National key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaohui Qin
- Shanghai Center for Plant Stress Biology and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jingni Wu
- National key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Minhang Yuan
- National key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Shiwei Wan
- National key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China
| | - Yang Zhao
- Shanghai Center for Plant Stress Biology and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Xiu-Fang Xin
- National key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai 200032, China; University of the Chinese Academy of Sciences, Beijing 100049, China; Chinese Academy of Sciences (CAS) and John Innes Centre, Centre of Excellence for Plant and Microbial Sciences, Shanghai 200032, China.
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81
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Nykiel M, Gietler M, Fidler J, Prabucka B, Rybarczyk-Płońska A, Graska J, Boguszewska-Mańkowska D, Muszyńska E, Morkunas I, Labudda M. Signal Transduction in Cereal Plants Struggling with Environmental Stresses: From Perception to Response. PLANTS (BASEL, SWITZERLAND) 2022; 11:1009. [PMID: 35448737 PMCID: PMC9026486 DOI: 10.3390/plants11081009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 05/13/2023]
Abstract
Cereal plants under abiotic or biotic stressors to survive unfavourable conditions and continue growth and development, rapidly and precisely identify external stimuli and activate complex molecular, biochemical, and physiological responses. To elicit a response to the stress factors, interactions between reactive oxygen and nitrogen species, calcium ions, mitogen-activated protein kinases, calcium-dependent protein kinases, calcineurin B-like interacting protein kinase, phytohormones and transcription factors occur. The integration of all these elements enables the change of gene expression, and the release of the antioxidant defence and protein repair systems. There are still numerous gaps in knowledge on these subjects in the literature caused by the multitude of signalling cascade components, simultaneous activation of multiple pathways and the intersection of their individual elements in response to both single and multiple stresses. Here, signal transduction pathways in cereal plants under drought, salinity, heavy metal stress, pathogen, and pest attack, as well as the crosstalk between the reactions during double stress responses are discussed. This article is a summary of the latest discoveries on signal transduction pathways and it integrates the available information to better outline the whole research problem for future research challenges as well as for the creative breeding of stress-tolerant cultivars of cereals.
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Affiliation(s)
- Małgorzata Nykiel
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland; (M.G.); (J.F.); (B.P.); (A.R.-P.); (J.G.); (M.L.)
| | - Marta Gietler
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland; (M.G.); (J.F.); (B.P.); (A.R.-P.); (J.G.); (M.L.)
| | - Justyna Fidler
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland; (M.G.); (J.F.); (B.P.); (A.R.-P.); (J.G.); (M.L.)
| | - Beata Prabucka
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland; (M.G.); (J.F.); (B.P.); (A.R.-P.); (J.G.); (M.L.)
| | - Anna Rybarczyk-Płońska
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland; (M.G.); (J.F.); (B.P.); (A.R.-P.); (J.G.); (M.L.)
| | - Jakub Graska
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland; (M.G.); (J.F.); (B.P.); (A.R.-P.); (J.G.); (M.L.)
| | | | - Ewa Muszyńska
- Department of Botany, Institute of Biology, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland;
| | - Iwona Morkunas
- Department of Plant Physiology, Poznań University of Life Sciences, Wołyńska 35, 60-637 Poznań, Poland;
| | - Mateusz Labudda
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, 02-776 Warsaw, Poland; (M.G.); (J.F.); (B.P.); (A.R.-P.); (J.G.); (M.L.)
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82
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Hao Z, Ma S, Liang L, Feng T, Xiong M, Lian S, Zhu J, Chen Y, Meng L, Li M. Candidate Genes and Pathways in Rice Co-Responding to Drought and Salt Identified by gcHap Network. Int J Mol Sci 2022; 23:ijms23074016. [PMID: 35409377 PMCID: PMC8999833 DOI: 10.3390/ijms23074016] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/26/2022] [Accepted: 04/01/2022] [Indexed: 01/24/2023] Open
Abstract
Drought and salinity stresses are significant abiotic factors that limit rice yield. Exploring the co-response mechanism to drought and salt stress will be conducive to future rice breeding. A total of 1748 drought and salt co-responsive genes were screened, most of which are enriched in plant hormone signal transduction, protein processing in the endoplasmic reticulum, and the MAPK signaling pathways. We performed gene-coding sequence haplotype (gcHap) network analysis on nine important genes out of the total amount, which showed significant differences between the Xian/indica and Geng/japonica population. These genes were combined with related pathways, resulting in an interesting mechanistic draft called the ‘gcHap-network pathway’. Meanwhile, we collected a lot of drought and salt breeding varieties, especially the introgression lines (ILs) with HHZ as the parent, which contained the above-mentioned nine genes. This might imply that these ILs have the potential to improve the tolerance to drought and salt. In this paper, we focus on the relationship of drought and salt co-response gene gcHaps and their related pathways using a novel angle. The haplotype network will be helpful to explore the desired haplotypes that can be implemented in haplotype-based breeding programs.
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Affiliation(s)
- Zhiqi Hao
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China; (Z.H.); (S.M.); (L.L.); (T.F.); (M.X.); (S.L.); (J.Z.); (Y.C.)
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Sai Ma
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China; (Z.H.); (S.M.); (L.L.); (T.F.); (M.X.); (S.L.); (J.Z.); (Y.C.)
| | - Lunping Liang
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China; (Z.H.); (S.M.); (L.L.); (T.F.); (M.X.); (S.L.); (J.Z.); (Y.C.)
| | - Ting Feng
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China; (Z.H.); (S.M.); (L.L.); (T.F.); (M.X.); (S.L.); (J.Z.); (Y.C.)
| | - Mengyuan Xiong
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China; (Z.H.); (S.M.); (L.L.); (T.F.); (M.X.); (S.L.); (J.Z.); (Y.C.)
| | - Shangshu Lian
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China; (Z.H.); (S.M.); (L.L.); (T.F.); (M.X.); (S.L.); (J.Z.); (Y.C.)
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
| | - Jingyan Zhu
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China; (Z.H.); (S.M.); (L.L.); (T.F.); (M.X.); (S.L.); (J.Z.); (Y.C.)
| | - Yanjun Chen
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China; (Z.H.); (S.M.); (L.L.); (T.F.); (M.X.); (S.L.); (J.Z.); (Y.C.)
| | - Lijun Meng
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518120, China
- Correspondence: (L.M.); (M.L.)
| | - Min Li
- College of Agronomy, Anhui Agricultural University, Hefei 230036, China; (Z.H.); (S.M.); (L.L.); (T.F.); (M.X.); (S.L.); (J.Z.); (Y.C.)
- Correspondence: (L.M.); (M.L.)
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83
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Jiang D, Zhang H, Cai H, Gao Z, Chen G. Overexpression of ZmPCK2, a phosphoenolpyruvate carboxykinase gene from maize confers enhanced tolerance to water deficit stress in rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 317:111195. [PMID: 35193744 DOI: 10.1016/j.plantsci.2022.111195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Revised: 01/18/2022] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
Water deficit is one of the major abiotic stresses that limit plant growth and global crop yields. Phosphoenolpyruvate carboxykinase (PCK) plays important roles in regulating plant growth and development, but its role in water-deficit stress remains elusive. In this study, we found that overexpression of ZmPCK2 significantly enhanced the water-deficit tolerance of transgenic rice. The expression level of ZmPCK2 was strongly induced by PEG and ABA treatments. Overexpression of ZmPCK2 in rice increased stomatal closure and water saving by regulating malate metabolism under water-deficit conditions. Moreover, the expression of ZmPCK2 in rice up-regulated ABA biosynthesis and responsive genes under water-deficit stress, and ZmPCK2 transgenic rice showed hypersensitive to exogenous ABA at germination stage, suggesting that ZmPCK2 may be involved in ABA signalling pathway. Under water-deficit stress, the ZmPCK2 transgenic rice showed higher antioxidant enzyme activities and lower accumulation of reactive oxygen species (ROS) compared with non-transgenic (NT) plants, resulting in less oxidative damage. Taken together, we suggest that ZmPCK2 plays multiple roles in response to water-deficit stress by enhancing ABA signalling pathway, regulating malate metabolism, promoting stomatal closure and further activating the ROS-scavenging system.
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Affiliation(s)
- Dexing Jiang
- Jiangsu Key Laboratory of Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Haizi Zhang
- Jiangsu Key Laboratory of Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Hui Cai
- Jiangsu Key Laboratory of Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Zhiping Gao
- Jiangsu Key Laboratory of Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
| | - Guoxiang Chen
- Jiangsu Key Laboratory of Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
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84
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ABA Mediates Plant Development and Abiotic Stress via Alternative Splicing. Int J Mol Sci 2022; 23:ijms23073796. [PMID: 35409156 PMCID: PMC8998868 DOI: 10.3390/ijms23073796] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/25/2022] [Accepted: 03/27/2022] [Indexed: 02/01/2023] Open
Abstract
Alternative splicing (AS) exists in eukaryotes to increase the complexity and adaptability of systems under biophysiological conditions by increasing transcriptional and protein diversity. As a classic hormone, abscisic acid (ABA) can effectively control plant growth, improve stress resistance, and promote dormancy. At the transcriptional level, ABA helps plants respond to the outside world by regulating transcription factors through signal transduction pathways to regulate gene expression. However, at the post-transcriptional level, the mechanism by which ABA can regulate plant biological processes by mediating alternative splicing is not well understood. Therefore, this paper briefly introduces the mechanism of ABA-induced alternative splicing and the role of ABA mediating AS in plant response to the environment and its own growth.
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85
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Wang G, Qi K, Gao X, Guo L, Cao P, Li Q, Qiao X, Gu C, Zhang S. Genome-wide identification and comparative analysis of the PYL gene family in eight Rosaceae species and expression analysis of seeds germination in pear. BMC Genomics 2022; 23:233. [PMID: 35337257 PMCID: PMC8957196 DOI: 10.1186/s12864-022-08456-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 03/08/2022] [Indexed: 11/10/2022] Open
Abstract
Abscisic acid (ABA) is a phytohormone that plays important roles in the regulation of plant growth, seed germination, and stress responses. The pyrabactin resistance 1-like (PYR/PYL) protein, an ABA receptor, was involved in the initial step in ABA signal transduction. However, the evolutionary history and characteristics of PYL genes expression remain unclear in Chinese white pear (Pyrus bretschneideri) or other Rosaceae species. In this study, 67 PYL genes were identified in eight Rosaceae species, and have been classified into three subgroups based on specific motifs and phylogenetic analysis. Intriguingly, we observed that whole-genome duplication (WGD) and dispersed duplication (DSD) have a major contribution to PYL family expansion. Purifying selection was the major force in PYL genes evolution. Expression analysis finds that PYL genes may function in multiple pear tissues. qRT-PCR validation of 11 PbrPYL genes indicates their roles in seed germination and abiotic stress responses. Our study provides a basis for further elucidation of the function of PYL genes and analysis of their expansion, evolution and expression patterns, which helps to understand the molecular mechanism of pear response to seed germination and seedling abiotic stress.
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Affiliation(s)
- Guoming Wang
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China
| | - Kaijie Qi
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China
| | - Xin Gao
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China
| | - Lei Guo
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, USA
| | - Peng Cao
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China
| | - Qionghou Li
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China
| | - Xin Qiao
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China
| | - Chao Gu
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China.
| | - Shaoling Zhang
- Centre of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, 210095, Nanjing, China.
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86
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He S, Ma R, Liu Z, Zhang D, Wang S, Guo Y, Chen M. Overexpression of BnaAGL11, a MADS-Box Transcription Factor, Regulates Leaf Morphogenesis and Senescence in Brassica napus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3420-3434. [PMID: 35261232 DOI: 10.1021/acs.jafc.1c07622] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Previous studies have reported that SEEDSTICK/AGAMOUS-LIKE 11 (AtSTK/AtAGL11), a MADS-box transcription factor, plays important roles in many biological processes in Arabidopsis thaliana. However, the function of BnaAGL11, an AtAGL11 homologous gene from Brassica napus, in leaf development remains unknown. Here, we found that the ectopic expression of any copy of Bna.C09.AGL11, Bna.A03.AGL11, and Bna.A09.AGL11 in A. thaliana led to smaller and curly leaves and promoted leaf senescence. Consistently, the overexpression of Bna.C09.AGL11 in B. napus also caused smaller and curly leaves and accelerated leaf senescence. Furthermore, we demonstrated that Bna.C09.AGL11 controlled leaf morphogenesis by indirectly downregulating the genes of Bna.A01.DWF4 and Bna.C07.PGX3 and promoted leaf senescence by indirectly upregulating the genes of Bna.A04.ABI5, Bna.A05.ABI5, Bna.C04.ABI5-1, and Bna.C01.SEN4 and directly activating the transcription of Bna.C04.ABI5-2 and Bna.C03.SEN4 genes. Our results provide new insights into the underlying regulatory mechanism of BnaAGL11 during leaf development in B. napus.
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Affiliation(s)
- Shuangcheng He
- State Key Laboratory of Crop Stress Biology for Arid Areas, National Yangling Agricultural Biotechnology & Breeding Center, Shaanxi Key Laboratory of Crop Heterosis, and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Rong Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, National Yangling Agricultural Biotechnology & Breeding Center, Shaanxi Key Laboratory of Crop Heterosis, and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Zijin Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, National Yangling Agricultural Biotechnology & Breeding Center, Shaanxi Key Laboratory of Crop Heterosis, and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Da Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, National Yangling Agricultural Biotechnology & Breeding Center, Shaanxi Key Laboratory of Crop Heterosis, and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Shixiang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, National Yangling Agricultural Biotechnology & Breeding Center, Shaanxi Key Laboratory of Crop Heterosis, and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yuan Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas, National Yangling Agricultural Biotechnology & Breeding Center, Shaanxi Key Laboratory of Crop Heterosis, and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Mingxun Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, National Yangling Agricultural Biotechnology & Breeding Center, Shaanxi Key Laboratory of Crop Heterosis, and College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
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87
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Influence of Ascophyllum nodosum Extract Foliar Spray on the Physiological and Biochemical Attributes of Okra under Drought Stress. PLANTS 2022; 11:plants11060790. [PMID: 35336672 PMCID: PMC8949179 DOI: 10.3390/plants11060790] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/09/2022] [Accepted: 03/09/2022] [Indexed: 11/17/2022]
Abstract
Drought stress restricts the growth of okra (Abelmoschus esculentus L.) primarily by disrupting its physiological and biochemical functions. This study evaluated the role of Ascophyllum nodosum extract (ANE) in improving the drought tolerance of okra. Drought stress (3 days (control), 6 days (mild stress), and 9 days (severe stress)) and 4 doses of ANE (0, 0.1%, 0.2%, and 0.3%) were imposed after 30 days of cultivation. The results indicate that drought stress decreases the chlorophyll content (total chlorophyll, chlorophyll a, chlorophyll b, and carotenoid) but increases the activity of anthocyanin, proline, and antioxidant enzymes such as ascorbate peroxidase (APX), peroxidase (POD), and catalase (CAT). Physiological and biochemical plant disturbances and visible growth reduction in okra under drought stress were significantly decreased by the application of ANE foliar spray. ANE spray (0.3%) significantly increased the chlorophyll abundance and activity of anthocyanin, proline, and antioxidants (APX, POD, and CAT). ANE regulated and improved biochemical and physiological functions in okra under both drought and control conditions. The results of the current study show that ANE foliar spray may improve the growth performance of okra and result in the development of drought tolerance in okra.
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88
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New functions of CIPK gene family are continue to emerging. Mol Biol Rep 2022; 49:6647-6658. [PMID: 35229240 DOI: 10.1007/s11033-022-07255-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 02/09/2022] [Indexed: 10/19/2022]
Abstract
CIPK protein family is a key protein family in Ca2+ mediated plant signaling pathway, which plays an indispensable role in plant response to stress and development. Every gene in this family encodes specific proteins. They interact with calcium ion signals, make plants to deal with various stress or stimuli. This article mainly reviews the mechanism, positioning and physiological functions of the CIPK family in different species in recent years. According to our team's research, CIPK8 interacts with CBL5 to improve salt tolerance, and CIPK23 interacts with TGA1 to regulate nitrate uptake negatively in chrysanthemum. In addition, we discussed current limitations and future research directions. The article will enhance the understanding of the functional characteristics of the CIPK gene family under different stresses, provide insights for future breeding and the development of new crop varieties with enhanced stress tolerance.
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89
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Wu HC, Yu SY, Wang YD, Jinn TL. Guard Cell-Specific Pectin METHYLESTERASE53 Is Required for Abscisic Acid-Mediated Stomatal Function and Heat Response in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2022; 13:836151. [PMID: 35265095 PMCID: PMC8898962 DOI: 10.3389/fpls.2022.836151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/28/2022] [Indexed: 06/06/2023]
Abstract
Pectin is a major component of the plant cell wall, forming a network that contributes to cell wall integrity and flexibility. Pectin methylesterase (PME) catalyzes the removal of methylester groups from the homogalacturonan backbone, the most abundant pectic polymer, and contributes to intercellular adhesion during plant development and different environmental stimuli stress. In this study, we identified and characterized an Arabidopsis type-II PME, PME53, which encodes a cell wall deposited protein and may be involved in the stomatal lineage pathway and stomatal functions. We demonstrated that PME53 is expressed explicitly in guard cells as an abscisic acid (ABA)-regulated gene required for stomatal movement and thermotolerance. The expression of PME53 is significantly affected by the stomatal differentiation factors SCRM and MUTE. The null mutation in PME53 results in a significant increase in stomatal number and susceptibility to ABA-induced stomatal closure. During heat stress, the pme53 mutant highly altered the activity of PME and significantly lowered the expression level of the calmodulin AtCaM3, indicating that PME53 may be involved in Ca2+-pectate reconstitution to render plant thermotolerance. Here, we present evidence that the PME53-mediated de-methylesterification status of pectin is directed toward stomatal development, movement, and regulation of the flexibility of the guard cell wall required for the heat response.
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Affiliation(s)
- Hui-Chen Wu
- Department of Life Science, Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
- Department of Biological Sciences and Technology, National University of Tainan, Tainan, Taiwan
| | - Shih-Yu Yu
- Department of Life Science, Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
| | - Yin-Da Wang
- Department of Life Science, Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
| | - Tsung-Luo Jinn
- Department of Life Science, Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
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90
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Tang D, Quan C, Lin Y, Wei K, Qin S, Liang Y, Wei F, Miao J. Physio-Morphological, Biochemical and Transcriptomic Analyses Provide Insights Into Drought Stress Responses in Mesona chinensis Benth. FRONTIERS IN PLANT SCIENCE 2022; 13:809723. [PMID: 35222473 PMCID: PMC8866654 DOI: 10.3389/fpls.2022.809723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/18/2022] [Indexed: 05/04/2023]
Abstract
Drought stress affects the normal growth and development of Mesona chinensis Benth (MCB), which is an important medicinal and edible plant in China. To investigate the physiological and molecular mechanisms of drought resistance in MCB, different concentrations of polyethylene glycol 6000 (PEG6000) (0, 5, 10, and 15%) were used to simulate drought conditions in this study. Results showed that the growth of MCB was significantly limited under drought stress conditions. Drought stress induced the increases in the contents of Chla, Chlb, Chla + b, soluble protein, soluble sugar, and soluble pectin and the activities of superoxide dismutase (SOD), catalase (CAT), total antioxidant capacity (TAC), hydrogen peroxide (H2O2), and malondialdehyde (MDA). Transcriptome analysis revealed 3,494 differentially expressed genes (DEGs) (1,961 up-regulated and 1,533 down-regulated) between the control and 15% PEG6000 treatments. These DEGs were identified to be involved in the 10 metabolic pathways, including "plant hormone signal transduction," "brassinosteroid biosynthesis," "plant-pathogen interaction," "MAPK signaling pathway-plant," "starch and sucrose metabolism," "pentose and glucuronate interconversions," "phenylpropanoid biosynthesis," "galactose metabolism," "monoterpenoid biosynthesis," and "ribosome." In addition, transcription factors (TFs) analysis showed 8 out of 204 TFs, TRINITY_DN3232_c0_g1 [ABA-responsive element (ABRE)-binding transcription factor1, AREB1], TRINITY_DN4161_c0_g1 (auxin response factor, ARF), TRINITY_DN3183_c0_g2 (abscisic acid-insensitive 5-like protein, ABI5), TRINITY_DN28414_c0_g2 (ethylene-responsive transcription factor ERF1b, ERF1b), TRINITY_DN9557_c0_g1 (phytochrome-interacting factor, PIF3), TRINITY_DN11435_c1_g1, TRINITY_DN2608_c0_g1, and TRINITY_DN6742_c0_g1, were closely related to the "plant hormone signal transduction" pathway. Taken together, it was inferred that these pathways and TFs might play important roles in response to drought stress in MCB. The current study provided important information for MCB drought resistance breeding in the future.
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Affiliation(s)
- Danfeng Tang
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Changqian Quan
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Yang Lin
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Kunhua Wei
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Shuangshuang Qin
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Ying Liang
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Fan Wei
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Jianhua Miao
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of TCM Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
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91
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FLS2–RBOHD–PIF4 Module Regulates Plant Response to Drought and Salt Stress. Int J Mol Sci 2022; 23:ijms23031080. [PMID: 35163000 PMCID: PMC8835674 DOI: 10.3390/ijms23031080] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 11/17/2022] Open
Abstract
As sessile organisms, plants are constantly challenged by several environmental stresses. Different kinds of stress often occur simultaneously, leading to the accumulation of reactive oxygen species (ROS) produced by respiratory burst oxidase homolog (RBOHD) and calcium fluctuation in cells. Extensive studies have revealed that flagellin sensitive 2 (FLS2) can sense the infection by pathogenic microorganisms and activate cellular immune response by regulating intracellular ROS and calcium signals, which can also be activated during plant response to abiotic stress. However, little is known about the roles of FLS2 and RBOHD in regulating abiotic stress. In this study, we found that although the fls2 mutant showed tolerance, the double mutant rbohd rbohf displayed hypersensitivity to abiotic stress, similar to its performance in response to immune stress. An analysis of the transcriptome of the fls2 mutant and rbohd rbohf double mutant revealed that phytochrome interacting factor 4 (PIF4) acted downstream of FLS2 and RBOHD to respond to the abiotic stress. Further analysis showed that both FLS2 and RBOHD regulated the response of plants to drought and salt stress by regulating the expression of PIF4. These findings revealed an FLS2–RBOHD–PIF4 module in regulating plant response to biotic and abiotic stresses.
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92
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Zhang Z, Luo S, Liu Z, Wan Z, Gao X, Qiao Y, Yu J, Zhang G. Genome-wide identification and expression analysis of the cucumber PYL gene family. PeerJ 2022; 10:e12786. [PMID: 35047239 PMCID: PMC8759363 DOI: 10.7717/peerj.12786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 12/21/2021] [Indexed: 01/10/2023] Open
Abstract
Abscisic acid (ABA) is a very important hormone in plants. It regulates growth and development of plants and plays an important role in biotic and abiotic stresses. The Pyrabactin resistance 1-like (PYR/PYL) proteins play a central role in ABA signal transduction pathways. The working system of PYL genes in cucumber, an important economical vegetable (Cucumis sativus L.), has not been fully studied yet. Through bioinformatics, a total of 14 individual PYL genes were identified in Chinese long '9930' cucumber. Fourteen PYL genes were distributed on six chromosomes of cucumber, and their encoded proteins predicted to be distributed in cytoplasm and nucleus. Based on the phylogenetic analysis, the PYL genes of cucumber, Arabidopsis, rice, apple, Brachypodium distachyon and soybeancould be classified into three groups. Genetic structures and conserved domains analysis revealed that CsPYL genes in the same group have similar exons and conserved domains. By predicting cis-elements in the promoters, we found that all CsPYL members contained hormone and stress-related elements. Additionally, the expression patterns of CsPYL genes were specific in tissues. Finally, we further examined the expression of 14 CsPYL genes under ABA, PEG, salt stress. The qRT-PCR results showed that most PYL gene expression levels were up-regulated. Furthermore, with different treatments about 3h, the relative expression of PYL8 was up-regulated and more than 20 times higher than 0h. It indicated that this gene may play an important role in abiotic stress.
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Affiliation(s)
- Zeyu Zhang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China,College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Shilei Luo
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China,College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Zeci Liu
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China,College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Zilong Wan
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China,College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Xueqin Gao
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China,College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Yali Qiao
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China,College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Jihua Yu
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China,College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Guobin Zhang
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou, China,College of Horticulture, Gansu Agricultural University, Lanzhou, China
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93
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Xu C, Luo M, Sun X, Yan J, Shi H, Yan H, Yan R, Wang S, Tang W, Zhou Y, Wang C, Xu Z, Chen J, Ma Y, Jiang Q, Chen M, Sun D. SiMYB19 from Foxtail Millet ( Setaria italica) Confers Transgenic Rice Tolerance to High Salt Stress in the Field. Int J Mol Sci 2022; 23:ijms23020756. [PMID: 35054940 PMCID: PMC8775554 DOI: 10.3390/ijms23020756] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/05/2022] [Accepted: 01/08/2022] [Indexed: 12/24/2022] Open
Abstract
Salt stress is a major threat to crop quality and yield. Most experiments on salt stress-related genes have been conducted at the laboratory or greenhouse scale. Consequently, there is a lack of research demonstrating the merit of exploring these genes in field crops. Here, we found that the R2R3-MYB transcription factor SiMYB19 from foxtail millet is expressed mainly in the roots and is induced by various abiotic stressors such as salt, drought, low nitrogen, and abscisic acid. SiMYB19 is tentatively localized to the nucleus and activates transcription. It enhances salt tolerance in transgenic rice at the germination and seedling stages. SiMYB19 overexpression increased shoot height, grain yield, and salt tolerance in field- and salt pond-grown transgenic rice. SiMYB19 overexpression promotes abscisic acid (ABA) accumulation in transgenic rice and upregulates the ABA synthesis gene OsNCED3 and the ABA signal transduction pathway-related genes OsPK1 and OsABF2. Thus, SiMYB19 improves salt tolerance in transgenic rice by regulating ABA synthesis and signal transduction. Using rice heterologous expression analysis, the present study introduced a novel candidate gene for improving salt tolerance and increasing yield in crops grown in saline-alkali soil.
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Affiliation(s)
- Chengjie Xu
- Key Laboratory of Sustainable Dryland Agriculture, College of Agriculture, Shanxi Agricultural University, Jinzhong 030801, China; (C.X.); (H.S.); (H.Y.); (R.Y.); (S.W.)
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Mingzhao Luo
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Xianjun Sun
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Jiji Yan
- College of Life Sciences, Shanxi Normal University, Taiyuan 030006, China;
| | - Huawei Shi
- Key Laboratory of Sustainable Dryland Agriculture, College of Agriculture, Shanxi Agricultural University, Jinzhong 030801, China; (C.X.); (H.S.); (H.Y.); (R.Y.); (S.W.)
| | - Huishu Yan
- Key Laboratory of Sustainable Dryland Agriculture, College of Agriculture, Shanxi Agricultural University, Jinzhong 030801, China; (C.X.); (H.S.); (H.Y.); (R.Y.); (S.W.)
| | - Rongyue Yan
- Key Laboratory of Sustainable Dryland Agriculture, College of Agriculture, Shanxi Agricultural University, Jinzhong 030801, China; (C.X.); (H.S.); (H.Y.); (R.Y.); (S.W.)
| | - Shuguang Wang
- Key Laboratory of Sustainable Dryland Agriculture, College of Agriculture, Shanxi Agricultural University, Jinzhong 030801, China; (C.X.); (H.S.); (H.Y.); (R.Y.); (S.W.)
| | - Wensi Tang
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Yongbin Zhou
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Chunxiao Wang
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Zhaoshi Xu
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Jun Chen
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Youzhi Ma
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Qiyan Jiang
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
| | - Ming Chen
- Institute of Crop Sciences, National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China; (M.L.); (X.S.); (W.T.); (Y.Z.); (C.W.); (Z.X.); (J.C.); (Y.M.); (Q.J.)
- Correspondence: or (D.S.); (M.C.)
| | - Daizhen Sun
- Key Laboratory of Sustainable Dryland Agriculture, College of Agriculture, Shanxi Agricultural University, Jinzhong 030801, China; (C.X.); (H.S.); (H.Y.); (R.Y.); (S.W.)
- Correspondence: or (D.S.); (M.C.)
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94
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Xie H, Shi F, Li J, Yu M, Yang X, Li Y, Fan J. The Reciprocal Effect of Elevated CO 2 and Drought on Wheat-Aphid Interaction System. FRONTIERS IN PLANT SCIENCE 2022; 13:853220. [PMID: 35909776 PMCID: PMC9330134 DOI: 10.3389/fpls.2022.853220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 06/08/2022] [Indexed: 05/13/2023]
Abstract
Due to the rising concentration of atmospheric CO2, climate change is predicted to intensify episodes of drought. However, our understanding of how combined environmental conditions, such as elevated CO2 and drought together, will influence crop-insect interactions is limited. In the present study, the direct effects of combined elevated CO2 and drought stress on wheat (Triticum aestivum) nutritional quality and insect resistance, and the indirect effects on the grain aphid (Sitobion miscanthi) performance were investigated. The results showed that, in wheat, elevated CO2 alleviated low water content caused by drought stress. Both elevated CO2 and drought promoted soluble sugar accumulation. However, opposite effects were found on amino acid content-it was decreased by elevated CO2 and increased by drought. Further, elevated CO2 down-regulated the jasmonic acid (JA) -dependent defense, but up-regulated the salicylic acid (SA)-dependent defense. Meanwhile, drought enhanced abscisic acid accumulation that promoted the JA-dependent defense. For aphids, their feeding always induced phytohormone resistance in wheat under either elevated CO2 or drought conditions. Similar aphid performance between the control and the combined two factors were observed. We concluded that the aphid damage suffered by wheat in the future under combined elevated CO2 and drier conditions tends to maintain the status quo. We further revealed the mechanism by which it happened from the aspects of wheat water content, nutrition, and resistance to aphids.
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Affiliation(s)
- Haicui Xie
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, China
| | - Fengyu Shi
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, China
| | - Jingshi Li
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, China
| | - Miaomiao Yu
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, China
- The State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xuetao Yang
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, China
| | - Yun Li
- Hebei Key Laboratory of Crop Stress Biology, College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Qinhuangdao, China
| | - Jia Fan
- The State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- *Correspondence: Jia Fan
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95
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Shazadee H, Khan N, Wang L, Wang X. GhHAI2, GhAHG3, and GhABI2 Negatively Regulate Osmotic Stress Tolerance via ABA-Dependent Pathway in Cotton ( Gossypium hirsutum L.). FRONTIERS IN PLANT SCIENCE 2022; 13:905181. [PMID: 35665139 PMCID: PMC9161169 DOI: 10.3389/fpls.2022.905181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 04/26/2022] [Indexed: 05/20/2023]
Abstract
The type 2C protein phosphatases (PP2Cs) are well known for their vital roles in plant drought stress responses, but their molecular mechanisms in cotton (Gossypium hirsutum L.) remain largely unknown. Here, we investigated the role of three clade A PP2C genes, namely, GhHAI2, GhAHG3, and GhABI2, in regulating the osmotic stress tolerance in cotton. The transcript levels of GhHAI2, GhAHG3, and GhABI2 were rapidly induced by exogenous abscisic acid (ABA) and polyethylene glycol (PEG) treatment. Silencing of GhHAI2, GhAHG3, and GhABI2 via virus-induced gene silencing (VIGS) improved osmotic tolerance in cotton due to decreased water loss, increase in both relative water content (RWC) and photosynthetic gas exchange, higher antioxidant enzyme activity, and lower malondialdehyde (MDA) content. The root analysis further showed that GhHAI2, GhAHG3, and GhABI2-silenced plants were more responsive to osmotic stress. Yeast two-hybrid (Y2H) and luciferase complementation imaging (LCI) assays further substantiated that GhHAI2, GhAHG3, and GhABI2 interact with the core receptors of ABA signaling, GhPYLs. The expression of several ABA-dependent stress-responsive genes was significantly upregulated in GhHAI2-, GhAHG3-, and GhABI2-silenced plants. Our findings suggest that GhHAI2, GhAHG3, and GhABI2 act as negative regulators in the osmotic stress response in cotton through ABA-mediated signaling.
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Affiliation(s)
- Hamna Shazadee
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- Agriculture and Agri-Food Canada, Ottawa Research and Development Centre, Ottawa, ON, Canada
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Nadeem Khan
- Agriculture and Agri-Food Canada, Ottawa Research and Development Centre, Ottawa, ON, Canada
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Lu Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xinyu Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- *Correspondence: Xinyu Wang,
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96
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Feitosa-Araujo E, da Fonseca-Pereira P, Knorr LS, Schwarzländer M, Nunes-Nesi A. NAD meets ABA: connecting cellular metabolism and hormone signaling. TRENDS IN PLANT SCIENCE 2022; 27:16-28. [PMID: 34426070 DOI: 10.1016/j.tplants.2021.07.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 07/04/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
NAD is a ubiquitous metabolic coenzyme. Although the role of NAD as a central redox shuttle remains of critical interest in plant metabolism, recent evidence indicates that NAD serves additional functions in signaling and regulation. A link with the plant stress hormone abscisic acid (ABA) has emerged on the basis of similar plant phenotypes following interference with NAD or ABA, especially in stomatal development, stomatal movements, responses to pathogens and abiotic stress insults, and seed germination. The association between NAD and ABA regulation appears specific and cannot be accounted for by pleiotropic interference. Here, we review the current picture of the NAD - ABA relationship, discuss emerging candidate mechanisms, and assess avenues to dissect interaction mechanisms.
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Affiliation(s)
- Elias Feitosa-Araujo
- Institute of Plant Biology and Biotechnology, Westfälische Wilhelms-Universität Münster, 48143 Münster, Germany.
| | - Paula da Fonseca-Pereira
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Lena S Knorr
- Institute of Plant Biology and Biotechnology, Westfälische Wilhelms-Universität Münster, 48143 Münster, Germany
| | - Markus Schwarzländer
- Institute of Plant Biology and Biotechnology, Westfälische Wilhelms-Universität Münster, 48143 Münster, Germany
| | - Adriano Nunes-Nesi
- Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
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97
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Wang M, Wang R, Mur LAJ, Ruan J, Shen Q, Guo S. Functions of silicon in plant drought stress responses. HORTICULTURE RESEARCH 2021; 8:254. [PMID: 34848683 PMCID: PMC8633297 DOI: 10.1038/s41438-021-00681-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 08/04/2021] [Accepted: 08/19/2021] [Indexed: 05/18/2023]
Abstract
Silicon (Si), the second most abundant element in Earth's crust, exerts beneficial effects on the growth and productivity of a variety of plant species under various environmental conditions. However, the benefits of Si and its importance to plants are controversial due to differences among the species, genotypes, and the environmental conditions. Although Si has been widely reported to alleviate plant drought stress in both the Si-accumulating and nonaccumulating plants, the underlying mechanisms through which Si improves plant water status and maintains water balance remain unclear. The aim of this review is to summarize the morphoanatomical, physiological, biochemical, and molecular processes that are involved in plant water status that are regulated by Si in response to drought stress, especially the integrated modulation of Si-triggered drought stress responses in Si accumulators and intermediate- and excluder-type plants. The key mechanisms influencing the ability of Si to mitigate the effects of drought stress include enhancing water uptake and transport, regulating stomatal behavior and transpirational water loss, accumulating solutes and osmoregulatory substances, and inducing plant defense- associated with signaling events, consequently maintaining whole-plant water balance. This study evaluates the ability of Si to maintain water balance under drought stress conditions and suggests future research that is needed to implement the use of Si in agriculture. Considering the complex relationships between Si and different plant species, genotypes, and the environment, detailed studies are needed to understand the interactions between Si and plant responses under stress conditions.
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Affiliation(s)
- Min Wang
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Ruirui Wang
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Luis Alejandro Jose Mur
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth, SY23 3DA, UK
| | - Jianyun Ruan
- Key Laboratory of Tea Plant Biology and Resources Utilization (Ministry of Agriculture), Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, 310008, Zhejiang, China
| | - Qirong Shen
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Shiwei Guo
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
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98
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Chi C, Xu X, Wang M, Zhang H, Fang P, Zhou J, Xia X, Shi K, Zhou Y, Yu J. Strigolactones positively regulate abscisic acid-dependent heat and cold tolerance in tomato. HORTICULTURE RESEARCH 2021; 8:237. [PMID: 34719688 PMCID: PMC8558334 DOI: 10.1038/s41438-021-00668-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 06/21/2021] [Accepted: 07/04/2021] [Indexed: 05/07/2023]
Abstract
Strigolactones are carotenoid-derived phytohormones that impact plant growth and development in diverse ways. However, the roles of strigolactones in the responses to temperature stresses are largely unknown. Here, we demonstrated that strigolactone biosynthesis is induced in tomato (Solanum lycopersicum) by heat and cold stresses. Compromised strigolactone biosynthesis or signaling negatively affected heat and cold tolerance, while application of the synthetic strigolactone analog GR245DS enhanced heat and cold tolerance. Strigolactone-mediated heat and cold tolerance was associated with the induction of abscisic acid (ABA), heat shock protein 70 (HSP70) accumulation, C-REPEAT BINDING FACTOR 1 (CBF1) transcription, and antioxidant enzyme activity. Importantly, a deficiency in ABA biosynthesis compromised the GR245DS effects on heat and cold stresses and abolished the GR245DS-induced transcription of HSP70, CBF1, and antioxidant-related genes. These results support that strigolactones positively regulate tomato heat and cold tolerance and that they do so at least partially by the induction of CBFs and HSPs and the antioxidant response in an ABA-dependent manner.
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Affiliation(s)
- Cheng Chi
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
| | - Xuechen Xu
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
| | - Mengqi Wang
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
| | - Hui Zhang
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
| | - Pingping Fang
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
| | - Jie Zhou
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
| | - Xiaojian Xia
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
| | - Kai Shi
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
| | - Yanhong Zhou
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China
| | - Jingquan Yu
- Department of Horticulture, Zijingang Campus, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China.
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China.
- Key Laboratory of Horticultural Plants Growth, Development and Quality Improvement, Agricultural Ministry of China, 866 Yuhangtang Road, Hangzhou, 310058, P.R. China.
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Wang J, Wang L, Yan Y, Zhang S, Li H, Gao Z, Wang C, Guo X. GhWRKY21 regulates ABA-mediated drought tolerance by fine-tuning the expression of GhHAB in cotton. PLANT CELL REPORTS 2021; 40:2135-2150. [PMID: 32888081 DOI: 10.1007/s00299-020-02590-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
KEY MESSAGE We report that GhWRKY21, a WRKY transcription factor, plays essential roles in regulating the intensity of the drought-induced ABA signalling pathway by facilitating the expression of GhHAB in cotton (Gossypium hirsutum). Abscisic acid (ABA) is one of the most important plant hormones in response to abiotic stress. However, activation of the ABA signalling pathway often leads to growth inhibition. The mechanisms that regulate the intensity of ABA signals are poorly understood. Here, we isolated and analysed the cotton group IId WRKY transcription factor (TF) gene GhWRKY21. Functional analysis indicated that GhWRKY21 plays a negative role in the drought response of cotton. Silencing of GhWRKY21 in cotton dramatically increased drought tolerance, whereas ectopic GhWRKY21 overexpression in Nicotiana benthamiana decreased drought tolerance. Furthermore, the GhWRKY21-mediated drought tolerance was ABA dependent. To clarify the mechanism underlying the GhWRKY21-mediated regulation of drought tolerance, 17 clade-A-type type 2C protein phosphatase (PP2C) genes, which are negative regulators of ABA signalling, were identified in cotton. Notably, GhWRKY21 interacted specifically with the W-box element within the promoter of GhHAB and regulated its expression. Silencing of GhHAB in cotton yielded a phenotype similar to that of GhWRKY21-silenced cotton. These results suggest that GhWRKY21 regulates the intensity of ABA signals by facilitating the expression of GhHAB. In summary, these findings dramatically improve our understanding of the function of WRKY TFs and provide insights into the mechanism of ABA-mediated drought tolerance.
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Affiliation(s)
- Jiayu Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Lijun Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Yan Yan
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Shuxin Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Han Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Zheng Gao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Chen Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China.
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China.
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Pérez-Llorca M, Caselles V, Müller M, Munné-Bosch S. The threshold between life and death in Cistus albidus L. seedlings: mechanisms underlying drought tolerance and resilience. TREE PHYSIOLOGY 2021; 41:1861-1876. [PMID: 33864363 DOI: 10.1093/treephys/tpab047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
Drought can lead to important shifts in population dynamics if it occurs during seedling establishment. With the aim of elucidating the underlying mechanisms of drought tolerance and resilience, here we monitored the survival of seedlings of the Mediterranean shrub Cistus albidus L. throughout a year growing in the natural Park of the Montserrat Mountains (Spain) and, additionally, we studied the response to severe drought and subsequent recovery after rewatering of seedlings grown in growth chambers. To find possible mechanisms explaining how seedlings respond to drought, growth and survival together with physiological-related parameters such as chlorophyll contents, vitamin E and stress-related phytohormones were measured. We found that survival decreased by 30% at the end of summer and that the main proxy of seedling survival was total chlorophyll. This proxy was further confirmed in the growth chambers, where we found that seedlings that recovered from drought had higher levels of total chlorophyll compared with the seedlings that did not recover. Furthermore, modulation of vitamin E and jasmonates contents appeared to be crucial in the drought response of C. albidus seedlings. We propose a prediction model of survival that includes total chlorophyll height, leaf mass area and maximum photosystem II efficiency with chlorophyll contents being a good long-term predictor of C. albidus seedling survival under severe stress, which, in turn, could help to better foresee population fluctuations in the field.
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Affiliation(s)
- Marina Pérez-Llorca
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
- Institute for Research on Biodiversity, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
| | - Vicent Caselles
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
| | - Maren Müller
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
| | - Sergi Munné-Bosch
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
- Institute for Research on Biodiversity, Faculty of Biology, University of Barcelona, Barcelona 08028, Spain
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