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Zhang X, Zhu X, Chen L, Fan H, Liu X, Yang N, Wang Y, Duan Y. Functional Identification of miR2119 Targeting ADHs in Modulating Soybean Resistance to Heterodera glycines. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:21461-21474. [PMID: 39311099 PMCID: PMC11450968 DOI: 10.1021/acs.jafc.4c05000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 09/07/2024] [Accepted: 09/17/2024] [Indexed: 10/03/2024]
Abstract
Soybean cyst nematode (SCN, Heterodera glycines) is a sedentary endoparasite nematode that results in severe economic losses in soybean crops. miRNAs play crucial roles in plant responses to nematode. However, the role of miR2119 responding to SCN stress in soybean. Here, we demonstrated that the transcript levels of polycistronic precursors containing miR2119 and miR398a were significantly reduced in soybean upon nematode infection. Promoter of the miR2119-398a precursor analysis was conducted containing a GUS reporter gene. GUS activity assays demonstrated a decrease in miR2119-398a promoter during SCN infection. Overexpression of polycistronic precursor miR2119-398a (OE-premiR2119-398a) and miR2119 precursor (OE-premiR2119) rendered soybean more susceptible to SCN. Conversely, silencing miR2119 (STTM2119) increased soybean resistance against SCN. Furthermore, RNA-seq analysis revealed that miR2119 is involved in many defense signaling pathways. GUS reporter gene assays demonstrated that miR2119 targets GmADH1.1a and GmADH1.1b. Functional analysis indicated that ADHs act as a major role in responding to H. glycines by modulating reactive oxygen species (ROS) levels. Together, the findings reveal a novel mechanism by which the polycistronic precursor miR2119-398a coordinately regulates in response to H. glycines. Additionally, miR2119 becomes an essential element contributing to H. glycines by modulating ADH activity and ROS homeostasis in soybean.
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Affiliation(s)
- Xiaoyu Zhang
- Nematology
Institute of Northern China, Shenyang Agricultural
University, Shenyang 110866, China
- College
of Plant Protection, Shenyang Agricultural
University, Shenyang 110866, China
| | - Xiaofeng Zhu
- Nematology
Institute of Northern China, Shenyang Agricultural
University, Shenyang 110866, China
- College
of Plant Protection, Shenyang Agricultural
University, Shenyang 110866, China
| | - Lijie Chen
- Nematology
Institute of Northern China, Shenyang Agricultural
University, Shenyang 110866, China
- College
of Plant Protection, Shenyang Agricultural
University, Shenyang 110866, China
| | - Haiyan Fan
- Nematology
Institute of Northern China, Shenyang Agricultural
University, Shenyang 110866, China
- College
of Plant Protection, Shenyang Agricultural
University, Shenyang 110866, China
| | - Xiaoyu Liu
- Nematology
Institute of Northern China, Shenyang Agricultural
University, Shenyang 110866, China
- College
of Sciences, Shenyang Agricultural University, Shenyang 110866, China
| | - Ning Yang
- Nematology
Institute of Northern China, Shenyang Agricultural
University, Shenyang 110866, China
- College
of Plant Protection, Shenyang Agricultural
University, Shenyang 110866, China
| | - Yuanyuan Wang
- Nematology
Institute of Northern China, Shenyang Agricultural
University, Shenyang 110866, China
- College
of Biological Science and Technology, Shenyang
Agricultural University, Shenyang 110866, China
| | - Yuxi Duan
- Nematology
Institute of Northern China, Shenyang Agricultural
University, Shenyang 110866, China
- College
of Plant Protection, Shenyang Agricultural
University, Shenyang 110866, China
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Wu H, Yu H, Zhang X, Wang Y, Zhu H, Zhao Y, Ma Q. Identification and characterization of waterlogging-responsive genes in the parental line of maize hybrid An'nong 876. Genet Mol Biol 2024; 46:e20230026. [PMID: 38224488 PMCID: PMC10789244 DOI: 10.1590/1678-4685-gmb-2023-0026] [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: 02/02/2023] [Accepted: 11/14/2023] [Indexed: 01/17/2024] Open
Abstract
Waterlogging stress is an important abiotic stress that adversely affects maize growth and yield. The mechanism regulating the early stage of the maize response to waterlogging stress is largely unknown. In this study, CM37 and cmh15 seedlings were treated with waterlogging stress and then examined in terms of their physiological changes. The results indicated that inbred line cmh15 is more tolerant to waterlogging stress and less susceptible to peroxide-based damages than CM37. The RNA sequencing analysis identified 1,359 down-regulated genes and 830 up-regulated genes in the waterlogging-treated cmh15 plants (relative to the corresponding control levels). According to the Gene Ontology analysis for the differentially expressed genes (DEGs), some important terms were identified which may play important roles in the response to waterlogging stress. Moreover, enriched Kyoto Encyclopedia of Genes and Genomes pathways were also identified for the DEGs. Furthermore, the substantial changes in the expression of 36 key transcription factors may be closely related to the maize in response to waterlogging stress. This study offers important insights into the mechanism in regulating maize tolerance to waterlogging stress, with important foundations for future research.
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Affiliation(s)
- Hongying Wu
- Anhui Agricultural University, School of Life Sciences, National Engineering Laboratory of Crop Stress Resistance Breeding, Hefei, China
| | - Haitao Yu
- Anhui Agricultural University, School of Life Sciences, National Engineering Laboratory of Crop Stress Resistance Breeding, Hefei, China
| | - Xingen Zhang
- Anhui Agricultural University, School of Life Sciences, National Engineering Laboratory of Crop Stress Resistance Breeding, Hefei, China
- West Anhui University, College of Biological and Pharmaceutical Engineering, Lu’an, China
| | - Yixiao Wang
- Anhui Agricultural University, School of Life Sciences, National Engineering Laboratory of Crop Stress Resistance Breeding, Hefei, China
| | - Hongjia Zhu
- Anhui Agricultural University, School of Life Sciences, National Engineering Laboratory of Crop Stress Resistance Breeding, Hefei, China
| | - Yang Zhao
- Anhui Agricultural University, School of Life Sciences, National Engineering Laboratory of Crop Stress Resistance Breeding, Hefei, China
| | - Qing Ma
- Anhui Agricultural University, School of Life Sciences, National Engineering Laboratory of Crop Stress Resistance Breeding, Hefei, China
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Jethva J, Lichtenauer S, Schmidt-Schippers R, Steffen-Heins A, Poschet G, Wirtz M, van Dongen JT, Eirich J, Finkemeier I, Bilger W, Schwarzländer M, Sauter M. Mitochondrial alternative NADH dehydrogenases NDA1 and NDA2 promote survival of reoxygenation stress in Arabidopsis by safeguarding photosynthesis and limiting ROS generation. THE NEW PHYTOLOGIST 2023; 238:96-112. [PMID: 36464787 DOI: 10.1111/nph.18657] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Plant submergence stress is a growing problem for global agriculture. During desubmergence, rising O2 concentrations meet a highly reduced mitochondrial electron transport chain (mETC) in the cells. This combination favors the generation of reactive oxygen species (ROS) by the mitochondria, which at excess can cause damage. The cellular mechanisms underpinning the management of reoxygenation stress are not fully understood. We investigated the role of alternative NADH dehydrogenases (NDs), as components of the alternative mETC in Arabidopsis, in anoxia-reoxygenation stress management. Simultaneous loss of the matrix-facing NDs, NDA1 and NDA2, decreased seedling survival after reoxygenation, while overexpression increased survival. The absence of NDAs led to reduced maximum potential quantum efficiency of photosystem II linking the alternative mETC to photosynthetic function in the chloroplast. NDA1 and NDA2 were induced upon reoxygenation, and transcriptional activation of NDA1 was controlled by the transcription factors ANAC016 and ANAC017 that bind to the mitochondrial dysfunction motif (MDM) in the NDA1 promoter. The absence of NDA1 and NDA2 did not alter recovery of cytosolic ATP levels and NADH : NAD+ ratio at reoxygenation. Rather, the absence of NDAs led to elevated ROS production, while their overexpression limited ROS. Our observations indicate that the control of ROS formation by the alternative mETC is important for photosynthetic recovery and for seedling survival of anoxia-reoxygenation stress.
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Affiliation(s)
- Jay Jethva
- Plant Developmental Biology and Plant Physiology, University of Kiel, 24118, Kiel, Germany
| | - Sophie Lichtenauer
- Institute of Plant Biology and Biotechnology, University of Münster, 48143, Münster, Germany
| | | | - Anja Steffen-Heins
- Institute of Human Nutrition and Food Science, University of Kiel, 24118, Kiel, Germany
| | - Gernot Poschet
- Centre for Organismal Studies, Heidelberg University, 69120, Heidelberg, Germany
| | - Markus Wirtz
- Centre for Organismal Studies, Heidelberg University, 69120, Heidelberg, Germany
| | | | - Jürgen Eirich
- Institute of Plant Biology and Biotechnology, University of Münster, 48143, Münster, Germany
| | - Iris Finkemeier
- Institute of Plant Biology and Biotechnology, University of Münster, 48143, Münster, Germany
| | - Wolfgang Bilger
- Ecophysiology of Plants, University of Kiel, 24118, Kiel, Germany
| | - Markus Schwarzländer
- Institute of Plant Biology and Biotechnology, University of Münster, 48143, Münster, Germany
| | - Margret Sauter
- Plant Developmental Biology and Plant Physiology, University of Kiel, 24118, Kiel, Germany
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Li XY, Wang Y, Hou XY, Chen Y, Li CX, Ma XR. Flexible response and rapid recovery strategies of the plateau forage Poa crymophila to cold and drought. FRONTIERS IN PLANT SCIENCE 2022; 13:970496. [PMID: 36426156 PMCID: PMC9681527 DOI: 10.3389/fpls.2022.970496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
Cold and drought stress are the two most severe abiotic stresses in alpine regions. Poa crymophila is widely grown in the Qinghai-Tibet Plateau with strong tolerance. Here, by profiling gene expression patterns and metabolomics-associated transcriptomics co-expression network, the acclimation of Poa crymophila to the two stresses was characterized. (1) The genes and metabolites with stress tolerance were induced by cold and drought, while those related with growth were inhibited, and most of them were restored faster after stresses disappeared. In particular, the genes for the photosynthesis system had strong resilience. (2) Additionally, cold and drought activated hypoxia and UV-B adaptation genes, indicating long-term life on the plateau could produce special adaptations. (3) Phenolamines, polyamines, and amino acids, especially N',N″,N'″-p-coumaroyl-cinnamoyl-caffeoyl spermidine, putrescine, and arginine, play key roles in harsh environments. Flexible response and quick recovery are strategies for adaptation to drought and cold in P. crymophila, accounting for its robust tolerance and resilience. In this study, we presented a comprehensive stress response profile of P. crymophila and provided many candidate genes or metabolites for future forage improvement.
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Affiliation(s)
- Xin-Yu Li
- Chinese Academy of Sciences, Innovation Academy for Seed Design, Chengdu Institute of Biology, Chengdu, Sichuan, China
- University of Chinese Academy of Sciences, Beijing, China
- College of Life Sciences, Sichuan University, Chengdu, Sichuan, China
| | - Yan Wang
- Chinese Academy of Sciences, Innovation Academy for Seed Design, Chengdu Institute of Biology, Chengdu, Sichuan, China
| | - Xin-Yi Hou
- Chinese Academy of Sciences, Innovation Academy for Seed Design, Chengdu Institute of Biology, Chengdu, Sichuan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yan Chen
- Chinese Academy of Sciences, Innovation Academy for Seed Design, Chengdu Institute of Biology, Chengdu, Sichuan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Cai-Xia Li
- Chinese Academy of Sciences, Innovation Academy for Seed Design, Chengdu Institute of Biology, Chengdu, Sichuan, China
| | - Xin-Rong Ma
- Chinese Academy of Sciences, Innovation Academy for Seed Design, Chengdu Institute of Biology, Chengdu, Sichuan, China
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Chen YH, Wei GW, Cui Y, Luo FL. Nutrient Inputs Alleviate Negative Effects of Early and Subsequent Flooding on Growth of Polygonum hydropiper With the Aid of Adventitious Roots. FRONTIERS IN PLANT SCIENCE 2022; 13:919409. [PMID: 35937344 PMCID: PMC9355131 DOI: 10.3389/fpls.2022.919409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
Riparian plants are exposed to harmful stress induced by flooding, which is often accompanied by eutrophication in the Three Gorges Reservoir Region. The phenomenon is mainly caused by domestic sewage discharges, slow water flow, and agricultural fertilizer pollution. Simulating abiotic stress, such as flooding at the initial period, can act as a signal and induce positive responses of plants to subsequent severe stress. In addition, eutrophication supplies nutrients, provides a favorable environment in the early stages of plant, and facilitates good performance in later development. However, whether early flooding (with or without eutrophication) acts as positive cue or as stress on plants at different developmental stages remains unclear. To address this question, seeds of Polygonum hydropiper were collected from low and high elevations in the hydro-fluctuation belt of the Three Gorges Reservoir Region. Plants germinated from these seeds were subjected to shallower and shorter early flooding treatments with or without eutrophication. Subsequently, plants were subjected to deeper and longer flooding treatments with or without eutrophication. Early flooding and eutrophic flooding significantly induced generation of adventitious roots, suggesting morphological adaptation to flooding. Although early flooding and eutrophic flooding treatments did not increase plant biomass in subsequent treatments compared with control, stem length, length and width of the 1st fully expanded leaf, and biomass of plants in the early eutrophic treatment were higher than these of the early flooding treatment plants. These results suggest a negative lag-effect of early flooding, and also indicate that nutrient inputs can alleviate such effects. Similarly, subsequent eutrophic flooding also enhanced plant growth compared with subsequent flooding, showing significantly higher values of leaf traits and adventitious root number. Plants originated from low elevation had significantly higher functional leaf length and stem biomass compared with those from high elevation. These results suggest that nutrient inputs can alleviate negative effects of early and subsequent flooding on growth of P. hydropiper with the generation of adventitious roots.
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Affiliation(s)
- Yu-Han Chen
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Guan-Wen Wei
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Yuan Cui
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Fang-Li Luo
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
- The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration, Beijing, China
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Zafari S, Vanlerberghe GC, Igamberdiev AU. The Role of Alternative Oxidase in the Interplay between Nitric Oxide, Reactive Oxygen Species, and Ethylene in Tobacco ( Nicotiana tabacum L.) Plants Incubated under Normoxic and Hypoxic Conditions. Int J Mol Sci 2022; 23:7153. [PMID: 35806157 PMCID: PMC9266549 DOI: 10.3390/ijms23137153] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 06/24/2022] [Indexed: 02/05/2023] Open
Abstract
The transgenic tobacco (Nicotiana tabacum L.) plants with the modified levels of alternative oxidase (AOX) were used to evaluate the physiological roles of AOX in regulating nitro-oxidative stress and metabolic changes after exposing plants to hypoxia for 6 h. Under normoxia, AOX expression resulted in the decrease of nitric oxide (NO) levels and of the rate of protein S-nitrosylation, while under hypoxia, AOX overexpressors exhibited higher NO and S-nitrosylation levels than knockdowns. AOX expression was essential in avoiding hypoxia-induced superoxide and H2O2 levels, and this was achieved via higher activities of catalase and glutathione reductase and the reduced expression of respiratory burst oxidase homolog (Rboh) in overexpressors as compared to knockdowns. The AOX overexpressing lines accumulated less pyruvate and exhibited the increased transcript and activity levels of pyruvate decarboxylase and alcohol dehydrogenase under hypoxia. This suggests that AOX contributes to the energy state of hypoxic tissues by stimulating the increase of pyruvate flow into fermentation pathways. Ethylene biosynthesis genes encoding 1-aminocyclopropane-1-carboxylic acid (ACC) synthase, ACC oxidase, and ethylene-responsive factors (ERFs) were induced during hypoxia and correlated with AOX and NO levels. We conclude that AOX controls the interaction of NO, reactive oxygen species, and ethylene, triggering a coordinated downstream defensive response against hypoxia.
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Affiliation(s)
- Somaieh Zafari
- Department of Biology, Memorial University of Newfoundland, St. John’s, NL A1C 5S7, Canada
| | - Greg C. Vanlerberghe
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada;
- Department of Cell and Systems Biology, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada
| | - Abir U. Igamberdiev
- Department of Biology, Memorial University of Newfoundland, St. John’s, NL A1C 5S7, Canada
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Strawberry FaSnRK1α Regulates Anaerobic Respiratory Metabolism under Waterlogging. Int J Mol Sci 2022; 23:ijms23094914. [PMID: 35563305 PMCID: PMC9101944 DOI: 10.3390/ijms23094914] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/20/2022] [Accepted: 04/25/2022] [Indexed: 11/20/2022] Open
Abstract
Sucrose nonfermenting-1-related protein kinase 1 (SnRK1) is a central integrator of plant stress and energy starvation signalling pathways. We found that the FaSnRK1α-overexpression (OE) roots had a higher respiratory rate and tolerance to waterlogging than the FaSnRK1α-RNAi roots, suggesting that FaSnRK1α plays a positive role in the regulation of anaerobic respiration under waterlogging. FaSnRK1α upregulated the activity of anaerobic respiration-related enzymes including hexokinase (HK), phosphofructokinase (PFK), pyruvate kinase (PK), pyruvate decarboxylase (PDC), alcohol dehydrogenase (ADH) and lactate dehydrogenase (LDH). FaSnRK1α also enhanced the ability to quench reactive oxygen species (ROS) by increasing antioxidant enzyme activities. We sequenced the transcriptomes of the roots of both wild-type (WT) and FaSnRK1α-RNAi plants, and the differentially expressed genes (DEGs) were clearly enriched in the defence response, response to biotic stimuli, and cellular carbohydrate metabolic process. In addition, 42 genes involved in glycolysis and 30 genes involved in pyruvate metabolism were significantly regulated in FaSnRK1α-RNAi roots. We analysed the transcript levels of two anoxia-related genes and three ERFVIIs, and the results showed that FaADH1, FaPDC1, FaHRE2 and FaRAP2.12 were upregulated in response to FaSnRK1α, indicating that FaSnRK1α may be involved in the ethylene signalling pathway to improve waterlogging tolerance. In conclusion, FaSnRK1α increases the expression of ERFVIIs and further activates anoxia response genes, thereby enhancing anaerobic respiration metabolism in response to low-oxygen conditions during waterlogging.
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Alternative Pathway Is Involved in Hydrogen Peroxide-Enhanced Cadmium Tolerance in Hulless Barley Roots. PLANTS 2021; 10:plants10112329. [PMID: 34834692 PMCID: PMC8622811 DOI: 10.3390/plants10112329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/21/2021] [Accepted: 10/23/2021] [Indexed: 11/18/2022]
Abstract
Hulless barley, grown in the Qinghai Tibet Plateau, has a wide range of environmental stress tolerance. Alternative pathway (AP) and hydrogen peroxide (H2O2) are involved in enhancing plant tolerance to environmental stresses. However, the relationship between H2O2 and AP in hulless barley tolerance to cadmium (Cd) stress remains unclear. In the study, the role and relationship of AP and H2O2 under Cd stress were investigated in hulless barley (Kunlun14) and common barley (Ganpi6). Results showed that the expression level of alternative oxidase (AOX) genes (mainly AOX1a), AP capacity (Valt), and AOX protein were clearly induced more in Kunlun14 than in Ganpi 6 under Cd stress; moreover, these parameters were further enhanced by applying H2O2. Malondialdehyde (MDA) content, electrolyte leakage (EL) and NAD(P)H to NAD(P) ratio also increased in Cd-treated roots, especially in Kunlun 14, which can be markedly alleviated by exogenous H2O2. However, this mitigating effect was aggravated by salicylhydroxamic acid (SHAM, an AOX inhibitor), suggesting AP contributes to the H2O2-enhanced Cd tolerance. Further study demonstrated that the effect of SHAM on the antioxidant enzymes and antioxidants was minimal. Taken together, hulless barley has higher tolerance to Cd than common barley; and in the process, AP exerts an indispensable function in the H2O2-enhanced Cd tolerance. AP is mainly responsible for the decrease of ROS levels by dissipating excess reducing equivalents.
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Assis RDAB, Sagawa CHD, Zaini PA, Saxe HJ, Wilmarth PA, Phinney BS, Salemi M, Moreira LM, Dandekar AM. A Secreted Chorismate Mutase from Xanthomonas arboricola pv. juglandis Attenuates Virulence and Walnut Blight Symptoms. Int J Mol Sci 2021; 22:10374. [PMID: 34638715 PMCID: PMC8508651 DOI: 10.3390/ijms221910374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/22/2021] [Accepted: 09/22/2021] [Indexed: 01/11/2023] Open
Abstract
Walnut blight is a significant above-ground disease of walnuts caused by Xanthomonas arboricola pv. juglandis (Xaj). The secreted form of chorismate mutase (CM), a key enzyme of the shikimate pathway regulating plant immunity, is highly conserved between plant-associated beta and gamma proteobacteria including phytopathogens belonging to the Xanthomonadaceae family. To define its role in walnut blight disease, a dysfunctional mutant of chorismate mutase was created in a copper resistant strain Xaj417 (XajCM). Infections of immature walnut Juglans regia (Jr) fruit with XajCM were hypervirulent compared with infections with the wildtype Xaj417 strain. The in vitro growth rate, size and cellular morphology were similar between the wild-type and XajCM mutant strains, however the quantification of bacterial cells by dPCR within walnut hull tissues showed a 27% increase in XajCM seven days post-infection. To define the mechanism of hypervirulence, proteome analysis was conducted to compare walnut hull tissues inoculated with the wild type to those inoculated with the XajCM mutant strain. Proteome analysis revealed 3296 Jr proteins (five decreased and ten increased with FDR ≤ 0.05) and 676 Xaj417 proteins (235 increased in XajCM with FDR ≤ 0.05). Interestingly, the most abundant protein in Xaj was a polygalacturonase, while in Jr it was a polygalacturonase inhibitor. These results suggest that this secreted chorismate mutase may be an important virulence suppressor gene that regulates Xaj417 virulence response, allowing for improved bacterial survival in the plant tissues.
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Affiliation(s)
- Renata de A. B. Assis
- Department of Plant Sciences, University of California, Davis, CA 95616, USA; (R.d.A.B.A.); (C.H.D.S.); (P.A.Z.); (H.J.S.)
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto 35400-000, MG, Brazil
| | - Cíntia H. D. Sagawa
- Department of Plant Sciences, University of California, Davis, CA 95616, USA; (R.d.A.B.A.); (C.H.D.S.); (P.A.Z.); (H.J.S.)
| | - Paulo A. Zaini
- Department of Plant Sciences, University of California, Davis, CA 95616, USA; (R.d.A.B.A.); (C.H.D.S.); (P.A.Z.); (H.J.S.)
| | - Houston J. Saxe
- Department of Plant Sciences, University of California, Davis, CA 95616, USA; (R.d.A.B.A.); (C.H.D.S.); (P.A.Z.); (H.J.S.)
| | - Phillip A. Wilmarth
- Proteomics Shared Resource, Oregon Health and Science University, Portland, OR 97239, USA;
| | - Brett S. Phinney
- Proteomics Core Facility, University of California, Davis, CA 95616, USA; (B.S.P.); (M.S.)
| | - Michelle Salemi
- Proteomics Core Facility, University of California, Davis, CA 95616, USA; (B.S.P.); (M.S.)
| | - Leandro M. Moreira
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Núcleo de Pesquisas em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto 35400-000, MG, Brazil
| | - Abhaya M. Dandekar
- Department of Plant Sciences, University of California, Davis, CA 95616, USA; (R.d.A.B.A.); (C.H.D.S.); (P.A.Z.); (H.J.S.)
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Li W, Geng Z, Zhang C, Wang K, Jiang X. Whole-genome characterization of Rosa chinensis AP2/ERF transcription factors and analysis of negative regulator RcDREB2B in Arabidopsis. BMC Genomics 2021; 22:90. [PMID: 33509074 PMCID: PMC7844920 DOI: 10.1186/s12864-021-07396-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 01/19/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Rose (Rosa chinensis) is a traditional famous flower with valuable ornamental characteristics. However, drought stress restricts its growth and development, leading to an abnormal phenotype. One of the main transcription factor (TF) protein groups in the plant kingdom are the APETALA2/ethylene-responsive factor (AP2/ERF) proteins and are potentially involved in the growth and stress responses of various plants. RESULTS Our investigation mainly focused on exploring the genome of rose and thereby we discovered 135 apparent AP2/ERF TFs. Phylogenic analyses revealed that RcAP2/ERF genes are categorized into DREB, Soloist, AP2, and ERF subfamilies, and are further classified these into 17 groups, with the same as Malus domestica and Arabidopsis thaliana. The analysis of the gene structure revealed that the introns ranged from 0 to 9 in number. Pattern examination demonstrated that the RcAP2/ERF predominantly consists of typical AP2 domains, of which the 2nd motif is the most ubiquitous. Distributions of cis-acting elements indicated that members of the AP2/ERF family are frequently involved in growth and development, phytohormone and stress response in rose species. Also, the distribution mapping of the rose chromosomes indicated that AP2/ERF class genes are dispersed among all seven chromosomes. Additionally, we isolated a novel DREB A2 subgroup gene and named it RcDREB2B. Subsequently, the RcDREB2B transcript accumulation was repressed under the mild and severe drought stress in the root samples of rose. RcDREB2B was targeted to the nucleus and exhibited transactivation in yeast cells. The overexpression of RcDREB2B was found to promote sensitivity to a higher salt concentration, ABA, and PEG at the germination and post-germination stages. Twelve putative osmotic and ABA-related genes were impaired in RcDREB2B-overexpressing plants. CONCLUSIONS The results provide comprehensive information regarding the gene structure, phylogenic, and distribution of the rose AP2/ERF family and bring insight into the complex transcriptional gene regulation of RcAP2/ERF. Findings in this study would also contribute to further understanding of the RcDREB2B gene in rose.
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Affiliation(s)
- Wei Li
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Ziwen Geng
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Cuiping Zhang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Kuiling Wang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China
| | - Xinqiang Jiang
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, 266000, China.
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The Anaerobic Product Ethanol Promotes Autophagy-Dependent Submergence Tolerance in Arabidopsis. Int J Mol Sci 2020; 21:ijms21197361. [PMID: 33028029 PMCID: PMC7583018 DOI: 10.3390/ijms21197361] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 09/29/2020] [Accepted: 10/02/2020] [Indexed: 02/07/2023] Open
Abstract
In response to hypoxia under submergence, plants switch from aerobic respiration to anaerobic fermentation, which leads to the accumulation of the end product, ethanol. We previously reported that Arabidopsis thaliana autophagy-deficient mutants show increased sensitivity to ethanol treatment, indicating that ethanol is likely involved in regulating the autophagy-mediated hypoxia response. Here, using a transcriptomic analysis, we identified 3909 genes in Arabidopsis seedlings that were differentially expressed in response to ethanol treatment, including 2487 upregulated and 1422 downregulated genes. Ethanol treatment significantly upregulated genes involved in autophagy and the detoxification of reactive oxygen species. Using transgenic lines expressing AUTOPHAGY-RELATED PROTEIN 8e fused to green fluorescent protein (GFP-ATG8e), we confirmed that exogenous ethanol treatment promotes autophagosome formation in vivo. Phenotypic analysis showed that deletions in the alcohol dehydrogenase gene in adh1 mutants result in attenuated submergence tolerance, decreased accumulation of ATG proteins, and diminished submergence-induced autophagosome formation. Compared to the submergence-tolerant Arabidopsis accession Columbia (Col-0), the submergence-intolerant accession Landsberg erecta (Ler) displayed hypersensitivity to ethanol treatment; we linked these phenotypes to differences in the functions of ADH1 and the autophagy machinery between these accessions. Thus, ethanol promotes autophagy-mediated submergence tolerance in Arabidopsis.
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12
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Su W, Ren Y, Wang D, Su Y, Feng J, Zhang C, Tang H, Xu L, Muhammad K, Que Y. The alcohol dehydrogenase gene family in sugarcane and its involvement in cold stress regulation. BMC Genomics 2020; 21:521. [PMID: 32727370 PMCID: PMC7392720 DOI: 10.1186/s12864-020-06929-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 07/20/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Alcohol dehydrogenases (ADHs) in plants are encoded by a multigene family. ADHs participate in growth, development, and adaptation in many plant species, but the evolution and function of the ADH gene family in sugarcane is still unclear. RESULTS In the present study, 151 ADH genes from 17 species including 32 ADH genes in Saccharum spontaneum and 6 ADH genes in modern sugarcane cultivar R570 were identified. Phylogenetic analysis demonstrated two groups of ADH genes and suggested that these genes underwent duplication during angiosperm evolution. Whole-genome duplication (WGD)/segmental and dispersed duplications played critical roles in the expansion of ADH family in S. spontaneum and R570, respectively. ScADH3 was cloned and preferentially expressed in response to cold stress. ScADH3 conferred improved cold tolerance in E. coli cells. Ectopic expression showed that ScADH3 can also enhance cold tolerance in transgenic tobacco. The accumulation of reactive oxygen species (ROS) in leaves of transgenic tobacco was significantly lower than in wild-type tobacco. The transcript levels of ROS-related genes in transgenic tobacco increased significantly. ScADH3 seems to affect cold tolerance by regulating the ROS-related genes to maintain the ROS homeostasis. CONCLUSIONS This study depicted the size and composition of the ADH gene family in 17 species, and investigated their evolution pattern. Comparative genomics analysis among the ADH gene families of S. bicolor, R570 and S. spontaneum revealed their close evolutionary relationship. Functional analysis suggested that ScADH3, which maintained the steady state of ROS by regulating ROS-related genes, was related to cold tolerance. These findings will facilitate research on evolutionary and functional aspects of the ADH genes in sugarcane, especially for the understanding of ScADH3 under cold stress.
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Affiliation(s)
- Weihua Su
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yongjuan Ren
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Dongjiao Wang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Yachun Su
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Jingfang Feng
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Chang Zhang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Hanchen Tang
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Liping Xu
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.,Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China
| | - Khushi Muhammad
- Department of Genetics, Hazara University, Mansehra, Pakistan
| | - Youxiong Que
- Key Laboratory of Sugarcane Biology and Genetic Breeding, Ministry of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China. .,Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, Fujian, China.
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13
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Hong CP, Wang MC, Yang CY. NADPH Oxidase RbohD and Ethylene Signaling are Involved in Modulating Seedling Growth and Survival Under Submergence Stress. PLANTS 2020; 9:plants9040471. [PMID: 32276372 PMCID: PMC7238110 DOI: 10.3390/plants9040471] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/06/2020] [Accepted: 04/07/2020] [Indexed: 02/07/2023]
Abstract
In higher plants under low oxygen or hypoxic conditions, the phytohormone ethylene and hydrogen peroxide (H2O2) are involved in complex regulatory mechanisms in hypoxia signaling pathways. The respiratory burst oxidase homolog D (RbohD), an NADPH oxidase, is involved in the primary stages of hypoxia signaling, modulating the expression of downstream hypoxia-inducible genes under hypoxic stress. In this study, our data revealed that under normoxic conditions, seed germination was delayed in the rbohD/ein2-5 double mutant, whereas postgermination stage root growth was promoted. Under submergence, the rbohD/ein2-5 double mutant line had an inhibited root growth phenotype. Furthermore, chlorophyll content and leaf survival were reduced in the rbohD/ein2-5 double mutant compared with wild-type plants under submerged conditions. In quantitative RT-PCR analysis, the induction of Ethylene-responsive factor 73/hypoxia responsive 1 (AtERF73/HRE1) and alcohol dehydrogenase 1 (AtADH1) transcripts was lower in the rbohD/ein2-5 double mutant during hypoxic stress than in wild-type plants and in rbohD and ein2-5 mutant lines. Taken together, our results indicate that an interplay of ethylene and RbohD is involved in regulating seed germination and post-germination stages under normoxic conditions. Moreover, ethylene and RbohD are involved in modulating seedling root growth, leaf chlorophyll content, and hypoxia-inducible gene expression under hypoxic conditions.
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Affiliation(s)
- Chen-Pu Hong
- Department of Agronomy, National Chung Hsing University, Taichung 40227, Taiwan;
| | - Mao-Chang Wang
- Department of Accounting, Chinese Culture University, Taipei 11114, Taiwan;
| | - Chin-Ying Yang
- Department of Agronomy, National Chung Hsing University, Taichung 40227, Taiwan;
- Correspondence: ; Tel.: +886-4-22840777 (ext. 608); Fax: +886-4-22877054
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14
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Zhou W, Chen F, Meng Y, Chandrasekaran U, Luo X, Yang W, Shu K. Plant waterlogging/flooding stress responses: From seed germination to maturation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 148:228-236. [PMID: 31981875 DOI: 10.1016/j.plaphy.2020.01.020] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 05/27/2023]
Abstract
Global climate change is strongly associated with variations in precipitation and flooding events. Flooding usually causes submergence- or partial submergence stress in plants, which significantly has a negative influence on agricultural production, from seed germination to vegetative and reproductive growth. Flooding stress results in crop growth under low oxygen conditions and thus, negatively affects the developmental periods of plant lifecycle. The survival strategies of different plant species under this stressful condition are distinct, whereas the perception pathways associated with flooding stress are similar at the molecular level. Plants respond to flooding stress by mediating changes in their architecture, energy metabolism, photosynthesis, respiration and endogenous phytohormone biosynthesis/signaling, because aerobic respiration is inhibited under flooding stress, the decrease of energy metabolism further constrains plant development. Consequently, to acclimate under these unfavorable conditions, the anaerobic respiration cascade must be promoted. In this updated review, we primarily focus on recent advances in our understanding of the mechanisms underlying plant responses to flooding stress. We summarize the functions of the flooding response factors involved in energy metabolism and phytohormone biosynthesis/signaling cascades. Finally, the current understanding of how plants circumvent flooding stress, and the potential challenges for future research, are discussed.
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Affiliation(s)
- Wenguan Zhou
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, 710129, China; Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Feng Chen
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, 710129, China; Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yongjie Meng
- Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, 611130, China
| | | | - Xiaofeng Luo
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, 710129, China; Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenyu Yang
- Institute of Ecological Agriculture, Sichuan Agricultural University, Chengdu, 611130, China
| | - Kai Shu
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, 710129, China.
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15
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Pan J, Sharif R, Xu X, Chen X. Mechanisms of Waterlogging Tolerance in Plants: Research Progress and Prospects. FRONTIERS IN PLANT SCIENCE 2020; 11:627331. [PMID: 33643336 PMCID: PMC7902513 DOI: 10.3389/fpls.2020.627331] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 12/30/2020] [Indexed: 05/19/2023]
Abstract
Waterlogging is one of the main abiotic stresses suffered by plants. Inhibition of aerobic respiration during waterlogging limits energy metabolism and restricts growth and a wide range of developmental processes, from seed germination to vegetative growth and further reproductive growth. Plants respond to waterlogging stress by regulating their morphological structure, energy metabolism, endogenous hormone biosynthesis, and signaling processes. In this updated review, we systematically summarize the changes in morphological structure, photosynthesis, respiration, reactive oxygen species damage, plant hormone synthesis, and signaling cascades after plants were subjected to waterlogging stress. Finally, we propose future challenges and research directions in this field.
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Affiliation(s)
- Jiawei Pan
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China
| | - Rahat Sharif
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
| | - Xuewen Xu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China
| | - Xuehao Chen
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China
- *Correspondence: Xuehao Chen,
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16
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Dossa K, Mmadi MA, Zhou R, Zhang T, Su R, Zhang Y, Wang L, You J, Zhang X. Depicting the Core Transcriptome Modulating Multiple Abiotic Stresses Responses in Sesame ( Sesamum indicum L.). Int J Mol Sci 2019; 20:ijms20163930. [PMID: 31412539 PMCID: PMC6721054 DOI: 10.3390/ijms20163930] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 07/26/2019] [Accepted: 08/10/2019] [Indexed: 01/21/2023] Open
Abstract
Sesame is a source of a healthy vegetable oil, attracting a growing interest worldwide. Abiotic stresses have devastating effects on sesame yield; hence, studies have been performed to understand sesame molecular responses to abiotic stresses, but the core abiotic stress-responsive genes (CARG) that the plant reuses in response to an array of environmental stresses are unknown. We performed a meta-analysis of 72 RNA-Seq datasets from drought, waterlogging, salt and osmotic stresses and identified 543 genes constantly and differentially expressed in response to all stresses, representing the sesame CARG. Weighted gene co-expression network analysis of the CARG revealed three functional modules controlled by key transcription factors. Except for salt stress, the modules were positively correlated with the abiotic stresses. Network topology of the modules showed several hub genes predicted to play prominent functions. As proof of concept, we generated over-expressing Arabidopsis lines with hub and non-hub genes. Transgenic plants performed better under drought, waterlogging, and osmotic stresses than the wild-type plants but did not tolerate the salt treatment. As expected, the hub gene was significantly more potent than the non-hub gene. Overall, we discovered several novel candidate genes, which will fuel investigations on plant responses to multiple abiotic stresses.
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Affiliation(s)
- Komivi Dossa
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China.
| | - Marie A Mmadi
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Rong Zhou
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Tianyuan Zhang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China
| | - Ruqi Su
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Yujuan Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Linhai Wang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Jun You
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China
| | - Xiurong Zhang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China.
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17
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Sun LR, Zhao ZJ, Hao FS. NADPH oxidases, essential players of hormone signalings in plant development and response to stresses. PLANT SIGNALING & BEHAVIOR 2019; 14:1657343. [PMID: 31431139 PMCID: PMC6804714 DOI: 10.1080/15592324.2019.1657343] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Plasma membrane NADPH oxidases (NOXs), also named respiratory burst oxidase homologues (Rbohs), are critical generators of reactive oxygen species (ROS), which as signal molecules regulate growth and development, and adaptation to various biotic and abiotic stresses in plants. NOXs-dependent ROS production is frequently induced by diverse phytohormones. The ROS commonly function downstream of, and interplay with hormone signalings, coordinately modulating plant development and stress tolerance. In this review, we summarize recent advances on the roles and molecular mechanisms of Rbohs in mediating signalings of multiple hormones including auxin, gibberellins, abscisic acid, ethylene and brassinosteroids in plants.
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Affiliation(s)
- Li Rong Sun
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - Zhi Jie Zhao
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng, China
| | - Fu Shun Hao
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng, China
- CONTACT Fu Shun Hao State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng 475004, China
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18
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Sun L, Ma L, He S, Hao F. AtrbohD functions downstream of ROP2 and positively regulates waterlogging response in Arabidopsis. PLANT SIGNALING & BEHAVIOR 2018; 13:e1513300. [PMID: 30188766 PMCID: PMC6204828 DOI: 10.1080/15592324.2018.1513300] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 08/09/2018] [Accepted: 08/13/2018] [Indexed: 05/21/2023]
Abstract
NADPH oxidase AtrbohD plays very important roles in modulating many cellular processes through production of signal molecules reactive oxygen species in Arabidopsis. However, whether it regulates the response to waterlogging stress is unclear. In this report, we showed that expression of AtrbohD was markedly induced by waterlogging stress, and mutation in AtrbohD led to clear sensitivity of Arabidopsis plants to waterlogging stress. Moreover, waterlogging-promoted increases in alcohol dehydrogenase (ADH) activity, ADH1 expression and H2O2 accumulation were significantly attenuated in two mutant lines of AtrbohD. These results indicate that AtrbohD is required for Arabidopsis tolerance to waterlogging stress. Besides, GUS staining experiments revealed that disruption of small G protein ROP2 encoding gene evidently suppressed the increase of AtrbohD expression while defect of AtrbohD did not prominently affect the abundance enhancements of ROP2 transcripts under waterlogged conditions. Together, these data suggest that AtrbohD functions downstream of ROP2 to positively regulate the response to waterlogging stress in Arabidopsis.
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Affiliation(s)
- Lirong Sun
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng, China
| | - Liya Ma
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng, China
- Anci District Agricultural Bureau of Langfang, Langfang, China
| | - Shibin He
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng, China
| | - Fushun Hao
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng, China
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19
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Zhan N, Wang C, Chen L, Yang H, Feng J, Gong X, Ren B, Wu R, Mu J, Li Y, Liu Z, Zhou Y, Peng J, Wang K, Huang X, Xiao S, Zuo J. S-Nitrosylation Targets GSNO Reductase for Selective Autophagy during Hypoxia Responses in Plants. Mol Cell 2018; 71:142-154.e6. [PMID: 30008318 DOI: 10.1016/j.molcel.2018.05.024] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 03/28/2018] [Accepted: 05/21/2018] [Indexed: 12/22/2022]
Abstract
Nitric oxide (NO) regulates diverse cellular signaling through S-nitrosylation of specific Cys residues of target proteins. The intracellular level of S-nitrosoglutathione (GSNO), a major bioactive NO species, is regulated by GSNO reductase (GSNOR), a highly conserved master regulator of NO signaling. However, little is known about how the activity of GSNOR is regulated. Here, we show that S-nitrosylation induces selective autophagy of Arabidopsis GSNOR1 during hypoxia responses. S-nitrosylation of GSNOR1 at Cys-10 induces conformational changes, exposing its AUTOPHAGY-RELATED8 (ATG8)-interacting motif (AIM) accessible by autophagy machinery. Upon binding by ATG8, GSNOR1 is recruited into the autophagosome and degraded in an AIM-dependent manner. Physiologically, the S-nitrosylation-induced selective autophagy of GSNOR1 is relevant to hypoxia responses. Our discovery reveals a unique mechanism by which S-nitrosylation mediates selective autophagy of GSNOR1, thereby establishing a molecular link between NO signaling and autophagy.
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Affiliation(s)
- Ni Zhan
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chun Wang
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Lichao Chen
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huanjie Yang
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jian Feng
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinqi Gong
- Institute for Mathematical Sciences, Renmin University of China, Beijing 100872, China
| | - Bo Ren
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Rong Wu
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinye Mu
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Yansha Li
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhonghua Liu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Ying Zhou
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Juli Peng
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Kejian Wang
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
| | - Xun Huang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Shi Xiao
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Jianru Zuo
- State Key Laboratory of Plant Genomics and CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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20
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Shi H, Liu W, Yao Y, Wei Y, Chan Z. Alcohol dehydrogenase 1 (ADH1) confers both abiotic and biotic stress resistance in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 262:24-31. [PMID: 28716417 DOI: 10.1016/j.plantsci.2017.05.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 05/25/2017] [Accepted: 05/30/2017] [Indexed: 05/03/2023]
Abstract
Although the transcriptional regulation and upstream transcription factors of AtADH1 in response to abiotic stress are widely revealed, the in vivo roles of AtADH1 remain unknown. In this study, we found that the expression of AtADH1 was largely induced after salt, drought, cold and pathogen infection. Further studies found that AtADH1 overexpressing plants were more sensitive to abscisic acid (ABA) in comparison to wide type (WT), while AtADH1 knockout mutants showed no significant difference compared with WT in ABA sensitivity. Consistently, AtADH1 overexpressing plants showed improved stress resistance to salt, drought, cold and pathogen infection than WT, but the AtADH1 knockout mutants had no significant difference in abiotic and biotic stress resistance. Moreover, overexpression of AtADH1 expression increased the transcript levels of multiple stress-related genes, accumulation of soluble sugars and callose depositions. All these results indicate that AtADH1 confers enhanced resistance to both abiotic and biotic stresses.
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Affiliation(s)
- Haitao Shi
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources and College of Biology, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China.
| | - Wen Liu
- Biotechnology Research Center, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, 443002, China
| | - Yue Yao
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources and College of Biology, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Yunxie Wei
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources and College of Biology, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Zhulong Chan
- Key Laboratory of Horticultural Plant Biology, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, China.
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21
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Yang SY, Wu YS, Chen CT, Lai MH, Yen HM, Yang CY. Physiological and molecular responses of seedlings of an upland rice ('Tung Lu 3') to total submergence compared to those of a submergence-tolerant lowland rice ('FR13A'). RICE (NEW YORK, N.Y.) 2017; 10:42. [PMID: 28861748 PMCID: PMC5578945 DOI: 10.1186/s12284-017-0180-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 08/25/2017] [Indexed: 05/25/2023]
Abstract
BACKGROUND Understanding the responses of rice to environmental stresses such as unscheduled submergence is of pressing important owing to increasing severity of weather thought to arise from global climate change. When rice is completely submerged, different types adopt either a quiescence survival strategy (i.e., minimal shoot elongation) or an escape strategy (i.e., enhanced shoot elongation). Each strategy can prolong survival depending on the circumstances. While submergence responses have been studied in rice typical of lowland and flood-prone areas, few studies have explored the physiological and molecular properties of upland rice under submergence. Here, we use seedlings of the upland rice 'Tung Lu 3' ('TL3') to analyze physiological and molecular responses to submergence. We compare them with those of 'FR13A', a lowland rice that tolerates submergence by adopting the quiescence strategy. RESULTS Plant height and distance between leaf sheaths, increased rapidly in 'TL3' under submergence. Although this indicated a strong escape strategy the seedlings remained totally underwater for the duration of the experiments. In contrast, 'FR13A' elongated much less. Consequently, after 4 days complete submergence followed by drainage, 'TL3' lodged much more severely than 'FR13A'. After 10 d complete submergence, 55% of 'TL3' seedlings survived compared to 100% in 'FR13A'. Chlorophyll a, b and total chlorophyll concentrations of the 2nd oldest leaves of 'TL3' were also significantly above those of 'FR13A' (but were lower than 'FR13A' in the 3rd oldest leaves) and less hydrogen peroxide accumulated in 'TL3'. Peroxidase activity in submerged 'TL3' was also greater than in 'FR13A' 1 day after submergence. Quantitative RT-PCR showed increased expression of sucrose synthase 1 and alcohol dehydrogenases 1 after 2 days complete submergence with significantly higher levels in 'TL3' compared to 'FR13A'. Expression was also higher in 'TL3' under non-submerged conditions. CONCLUSIONS The upland rice line 'TL3' gave a stronger elongation response than 'FR13A' to complete submergence. This escape strategy is widely considered to prejudice survival when the plant remains totally submerged. However, contrary to expectations, 'TL3' survival rates were substantial although below those for 'FR13A' while physiological, biochemical and molecular parameters linked to adaptation differed in detail but appeared to be broadly comparable. These findings highlight that submergence tolerance is determine not only by the adoption of quiescence or escape strategies but maybe by metabolic and physiological properties unrelated to the underwater elongation rate.
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Affiliation(s)
- Si-Yu Yang
- Department of Agronomy, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Yu-Sian Wu
- Department of Agronomy, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Chung-Tse Chen
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Ming-Hsin Lai
- Crop Science Division, Taiwan Agricultural Research Institute, Taichung, 41362, Taiwan
| | - Hsing-Mu Yen
- Crop Science Division, Taiwan Agricultural Research Institute, Taichung, 41362, Taiwan
| | - Chin-Ying Yang
- Department of Agronomy, National Chung Hsing University, Taichung, 40227, Taiwan.
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Yang CY, Huang YC, Ou SL. ERF73/HRE1 is involved in H 2O 2 production via hypoxia-inducible Rboh gene expression in hypoxia signaling. PROTOPLASMA 2017; 254:1705-1714. [PMID: 27995331 DOI: 10.1007/s00709-016-1064-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Accepted: 12/11/2016] [Indexed: 06/06/2023]
Abstract
Hypoxia deprives cells of energy and induces severe physical damage in embryophytes. Under hypoxia, the equilibrium between ethylene and H2O2 affects the response of the transcription factor AtERF73/HRE1. To evaluate the role of AtERF73/HRE1 during hypoxia signaling, we used three independent AtERF73/HRE1 knockout lines to detect H2O2 accumulation. The results revealed that under hypoxia, H2O2 accumulation in the AtERF73/HRE1 knockout lines decreased, indicating that AtERF73/HRE1 uses a negative feedback regulation mechanism to influence the production of H2O2 induced through hypoxia signal transduction. Quantitative RT-PCR analyses showed that oxygen deficiency had different effects on the expression of the hypoxia-induced genes Rboh B, D, G, and I in the AtERF73/HRE1 knockout lines. In particular, Rboh B and D expression were increased, whereas Rboh G expression was decreased. The expression of Rboh I was increased at 1 h but decreased at 3 h during hypoxia treatment in the AtERF73/HRE1 knockout lines. Similarly, the transcript levels of antioxidant and hypoxia-induced/ethylene response genes in the AtERF73/HRE1 knockout lines were affected by hypoxic stress, indicating that AtERF73/HRE1 is essential to hypoxia signal transduction in embryophytes. Additionally, in histochemical analysis, AtERF73/HRE1 promoter-induced GUS expression was detected in various plant parts throughout the plant growth process (e.g., leaves, inflorescences, siliques), particularly in the edges of mature leaves and guard cells. Taken together, our results confirm that AtERF73/HRE1 plays a role in H2O2 production by affecting the hypoxia-induced expression of Rboh genes in hypoxia signal transduction.
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Affiliation(s)
- Chin-Ying Yang
- Department of Agronomy, National Chung Hsing University, Taichung, 40227, Taiwan.
| | - Yi-Chun Huang
- Department of Agronomy, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Shang-Ling Ou
- Department of Agronomy, National Chung Hsing University, Taichung, 40227, Taiwan
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23
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Yao Y, Chen X, Wu AM. ERF-VII members exhibit synergistic and separate roles in Arabidopsis. PLANT SIGNALING & BEHAVIOR 2017; 12:e1329073. [PMID: 28537474 PMCID: PMC5566254 DOI: 10.1080/15592324.2017.1329073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The ethylene response factor VII (ERF-VII) transcription factor has been reported to be involved in multiple different stress responses. In a previous study, we showed that ERF74 and ERF75 play a redundant role in the upregulation of RESPIRATORY BURST OXIDASE HOMOLOG D (RbohD) transcription and enhance the oxygen species (ROS) burst during early stages of the stress response. Induction of stress marker genes and ROS-scavenging enzymes under various stress conditions are dependent on this ROS burst. Here, we propose an assumption that ERF71-ERF75 have different functions and act synergistically in response to stresses in Arabidopsis. ERF74 and ERF75 are involved in controlling an RbohD-dependent mechanism in response to different stresses, subsequently maintaining H2O2 homeostasis in Arabidopsis as we previously reported. ERF71 and ERF73 may have a role in supervising plant intracellular ROS homeostasis, whereas ERF72 may only act as an activator of ERF74 and ERF75 in the stress response.
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Affiliation(s)
- Yuan Yao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Xiaoyang Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
| | - Ai-Min Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
- CONTACT Ai-Min Wu College of Forestry and Landscape Architecture, South China Agricultural University, Wushan Road, Guangzhou, Guangdong 510642, China
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24
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Liu B, Sun L, Ma L, Hao FS. Both AtrbohD and AtrbohF are essential for mediating responses to oxygen deficiency in Arabidopsis. PLANT CELL REPORTS 2017; 36:947-957. [PMID: 28337518 DOI: 10.1007/s00299-017-2128-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 03/10/2017] [Indexed: 05/21/2023]
Abstract
Both AtrbohD and AtrbohF promote the increases in activities of ADH, PDC, LDH, and Ca2+ levels, and induce the expression of multiple hypoxia response genes, thus improving Arabidopsis adaptation to oxygen deficiency. NADPH oxidase AtrbohD and AtrbohF cooperatively play key roles in regulation of growth and stress signaling in Arabidopsis. However, reports on AtrbohD and AtrbohF functioning together in hypoxia signaling are scarce, and the underlying mechanisms remain elusive. Here, we show that the double null mutant atrbohD/F is more sensitive to oxygen deprivation compared with wild type (WT) and the single mutant atrbohD and atrbohF. Under oxygen deficiency, enhancements of the transcripts of alcohol dehydrogenase 1 (ADH1) and pyruvate decarboxylase 1 (PDC1) and the activities of ADH, PDC and lactate dehydrogenase in WT are clearly reduced in the single mutants, and more strongly reduced in the double mutant. Moreover, increases in the production of ATP, H2O2 and Ca2+ in WT are significantly arrested in atrbohD, atrbohF, and especially in atrbohD/F. Hypoxia-promoted rise in the expression of some hypoxic responsive genes is also inhibited in atrbohD/F relative to WT, atrbohD and atrbohF. These genes include ethylene response factor 73, lactate dehydrogenase, MYB transcription factor 2, sucrose synthase 1 (SUS1), SUS4, heat stress transcription factor A2 and heat-shock protein 18.2. These results suggest that both AtrbohD and AtrbohF are essential for mediating hypoxia signaling. H2O2 derived from AtrbohD and AtrbohF triggers the Ca2+ increase and induces the expression of multiple hypoxia response genes, thus improving Arabidopsis tolerance to low-oxygen stress. These findings provide new insights into the mechanisms of AtrbohF in regulating the responses to oxygen deprivation in Arabidopsis.
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Affiliation(s)
- Bo Liu
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University Jinming Campus, Kaifeng, 475004, China
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Lirong Sun
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University Jinming Campus, Kaifeng, 475004, China
| | - Liya Ma
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University Jinming Campus, Kaifeng, 475004, China
- Anci District Agricultural Bureau of Langfang, Langfang, 065000, China
| | - Fu-Shun Hao
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University Jinming Campus, Kaifeng, 475004, China.
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25
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Wu YS, Yang CY. Physiological Responses and Expression Profile of NADPH Oxidase in Rice (Oryza Sativa) Seedlings under Different Levels of Submergence. RICE (NEW YORK, N.Y.) 2016; 9:2. [PMID: 26810875 PMCID: PMC4726645 DOI: 10.1186/s12284-016-0074-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 01/15/2016] [Indexed: 05/22/2023]
Abstract
BACKGROUND Flooding due to global climate change is a serious problem that frequently decreases crop yields. Rice fields in flood-prone areas often experience full or partial submergence. Submergence has an adverse effect on internal oxygen availability, sugar status and survival. Complete submergence imposes severe pressure on plants, principally because the excess water in their surroundings deprives them of certain basic resources such as oxygen, carbon dioxide and light for photosynthesis. To better understand the mechanisms involved under different levels of flooding, it is necessary to further observe physiological responses and to identify the Rboh genes involved and determine how they are regulated during submergence. RESULTS In this study, significant physiological changes were observed in plant height, leaf sheath elongation and chlorophyll a, b and total content under partial and full submergence treatments. Senescence-regulating genes were severely affected under full submergence. Additionally, intracellular oxidative homeostasis was disrupted by overproduction of H2O2 and O2 (-), which affected cell viability and antioxidant enzyme activity, under different levels of submergence. Quantitative RT-PCR analyses revealed that complex regulation of Rboh genes is involved under different levels of submergence. CONCLUSION Our results demonstrated that the effect of physiological and the transcript levels of OsRboh genes were presented different responses to different levels of submergence in rice seedlings. There have different mechanism in intracellular to response different levels of submergence. Finally we discuss effects of the regulation of OsRboh expression and ROS production which was important to maintain homeostasis to help rice seedlings face different levels of submergence.
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Affiliation(s)
- Yu-Sian Wu
- Department of Agronomy, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Chin-Ying Yang
- Department of Agronomy, National Chung Hsing University, Taichung, 40227, Taiwan.
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26
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Chen L, Liao B, Qi H, Xie LJ, Huang L, Tan WJ, Zhai N, Yuan LB, Zhou Y, Yu LJ, Chen QF, Shu W, Xiao S. Autophagy contributes to regulation of the hypoxia response during submergence in Arabidopsis thaliana. Autophagy 2016; 11:2233-46. [PMID: 26566261 PMCID: PMC4835207 DOI: 10.1080/15548627.2015.1112483] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Autophagy involves massive degradation of intracellular components and functions as a conserved system that helps cells to adapt to adverse conditions. In mammals, hypoxia rapidly stimulates autophagy as a cell survival response. Here, we examine the function of autophagy in the regulation of the plant response to submergence, an abiotic stress that leads to hypoxia and anaerobic respiration in plant cells. In Arabidopsis thaliana, submergence induces the transcription of autophagy-related (ATG) genes and the formation of autophagosomes. Consistent with this, the autophagy-defective (atg) mutants are hypersensitive to submergence stress and treatment with ethanol, the end product of anaerobic respiration. Upon submergence, the atg mutants have increased levels of transcripts of anaerobic respiration genes (alcohol dehydrogenase 1, ADH1 and pyruvate decarboxylase 1, PDC1), but reduced levels of transcripts of other hypoxia- and ethylene-responsive genes. Both submergence and ethanol treatments induce the accumulation of reactive oxygen species (ROS) in the rosettes of atg mutants more than in the wild type. Moreover, the production of ROS by the nicotinamide adenine dinucleotide phosphate (NADPH) oxidases is necessary for plant tolerance to submergence and ethanol, submergence-induced expression of ADH1 and PDC1, and activation of autophagy. The submergence- and ethanol-sensitive phenotypes in the atg mutants depend on a complete salicylic acid (SA) signaling pathway. Together, our findings demonstrate that submergence-induced autophagy functions in the hypoxia response in Arabidopsis by modulating SA-mediated cellular homeostasis.
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Affiliation(s)
- Liang Chen
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Bin Liao
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Hua Qi
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Li-Juan Xie
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Li Huang
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Wei-Juan Tan
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Ning Zhai
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Li-Bing Yuan
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Ying Zhou
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Lu-Jun Yu
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Qin-Fang Chen
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Wensheng Shu
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
| | - Shi Xiao
- a State Key Laboratory of Biocontrol; Guangdong Provincial Key Laboratory of Plant Resources; Collaborative Innovation Center of Genetics and Development; School of Life Sciences; Sun Yat-sen University ; Guangzhou , China
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27
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Wu J, Zhao Q, Liu S, Shahid M, Lan L, Cai G, Zhang C, Fan C, Wang Y, Zhou Y. Genome-wide Association Study Identifies New Loci for Resistance to Sclerotinia Stem Rot in Brassica napus. FRONTIERS IN PLANT SCIENCE 2016; 7:1418. [PMID: 27703464 PMCID: PMC5028409 DOI: 10.3389/fpls.2016.01418] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 09/06/2016] [Indexed: 05/18/2023]
Abstract
Sclerotinia stem rot (SSR) caused by the necrotrophic fungus Sclerotinia sclerotiorum is a major disease in rapeseed (Brassica napus) worldwide. Breeding for SSR resistance in B. napus, as in other crops, relies only on germplasms with quantitative resistance genes. A better understanding of the genetic basis for SSR resistance in B. napus thus holds promise for the genetic improvement of disease resistance. In the present study, a genome-wide association study (GWAS) for SSR resistance in B. napus were performed using an association panel of 448 accessions genotyped with the Brassica 60K Infinium® single-nucleotide polymorphism (SNP) array. A total of 26 SNPs corresponding to three loci, DSRC4, DSRC6, and DSRC8 were associated with SSR resistance. Haplotype analysis showed that the three favorable alleles for SSR resistance exhibited cumulative effects. After aligning SSR resistance quantitative trait loci (QTL) identified in the present and previous studies to the B. napus reference genome, one locus (DSRC6) was found to be located within the confidence interval of a QTL identified in previous QTL mapping studies and another two loci (DSRC4 and DSRC8) were considered novel loci for SSR resistance. A total of 39 candidate genes were predicted for the three loci based on the GWAS combining with the differentially expressed genes identified in previous transcriptomics analyses.
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Affiliation(s)
- Jian Wu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural UniversityWuhan, China
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou UniversityYangzhou, China
| | - Qing Zhao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural UniversityWuhan, China
| | - Sheng Liu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural UniversityWuhan, China
| | - Muhammad Shahid
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural UniversityWuhan, China
| | - Lei Lan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural UniversityWuhan, China
| | - Guangqin Cai
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural UniversityWuhan, China
| | - Chunyu Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural UniversityWuhan, China
| | - Chuchuan Fan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural UniversityWuhan, China
| | - Youping Wang
- Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology, Yangzhou UniversityYangzhou, China
| | - Yongming Zhou
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural UniversityWuhan, China
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28
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Cho HY, Wen TN, Wang YT, Shih MC. Quantitative phosphoproteomics of protein kinase SnRK1 regulated protein phosphorylation in Arabidopsis under submergence. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:2745-60. [PMID: 27029354 PMCID: PMC4861021 DOI: 10.1093/jxb/erw107] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
SNF1 RELATED PROTEIN KINASE 1 (SnRK1) is proposed to be a central integrator of the plant stress and energy starvation signalling pathways. We observed that the Arabidopsis SnRK1.1 dominant negative mutant (SnRK1.1 (K48M) ) had lower tolerance to submergence than the wild type, suggesting that SnRK1.1-dependent phosphorylation of target proteins is important in signalling pathways triggered by submergence. We conducted quantitative phosphoproteomics and found that the phosphorylation levels of 57 proteins increased and the levels of 27 proteins decreased in Col-0 within 0.5-3h of submergence. Among the 57 proteins with increased phosphorylation in Col-0, 38 did not show increased phosphorylation levels in SnRK1.1 (K48M) under submergence. These proteins are involved mainly in sugar and protein synthesis. In particular, the phosphorylation of MPK6, which is involved in regulating ROS responses under abiotic stresses, was disrupted in the SnRK1.1 (K48M) mutant. In addition, PTP1, a negative regulator of MPK6 activity that directly dephosphorylates MPK6, was also regulated by SnRK1.1. We also showed that energy conservation was disrupted in SnRK1.1 (K48M) , mpk6, and PTP1 (S7AS8A) under submergence. These results reveal insights into the function of SnRK1 and the downstream signalling factors related to submergence.
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Affiliation(s)
- Hsing-Yi Cho
- Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, National Chung-Hsing University, Academia Sinica, Taiwan Agricultural Biotechnology Research Center, Academia Sinica, Taiwan Graduate Institute of Biotechnology, National Chung-Hsing University, Taiwan
| | - Tuan-Nan Wen
- Institute of Plant and Microbial Biology, Academia Sinica, Taiwan
| | - Ying-Tsui Wang
- Agricultural Biotechnology Research Center, Academia Sinica, Taiwan
| | - Ming-Che Shih
- Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, National Chung-Hsing University, Academia Sinica, Taiwan Agricultural Biotechnology Research Center, Academia Sinica, Taiwan Biotechnology Center, National Chung-Hsing University, Taichung, Taiwan
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Abstract
Climate change is considered a major threat to world agriculture and food security. To improve the agricultural productivity and sustainability, the development of high-yielding stress-tolerant, and climate-resilient crops is essential. Of the abiotic stresses, flooding stress is a very serious hazard because it markedly reduces plant growth and grain yield. Proteomic analyses indicate that the effects of flooding stress are not limited to oxygen deprivation but include many other factors. Although many flooding response mechanisms have been reported, flooding tolerance mechanisms have not been fully clarified for soybean. There were limitations in soybean materials, such as mutants and varieties, while they were abundant in rice and Arabidopsis. In this review, plant proteomic technologies are introduced and flooding tolerance mechanisms of soybeans are summarized to assist in the improvement of flooding tolerance in soybeans. This work will expedite transgenic or marker-assisted genetic enhancement studies in crops for developing high-yielding stress-tolerant lines or varieties under abiotic stress.
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Affiliation(s)
- Setsuko Komatsu
- National Institute of Crop Science, National Agriculture and Food Research Organization, Kannondai 2-1-18, Tsukuba 305-8518, Japan
| | - Makoto Tougou
- National Institute of Crop Science, National Agriculture and Food Research Organization, Kannondai 2-1-18, Tsukuba 305-8518, Japan
| | - Yohei Nanjo
- National Institute of Crop Science, National Agriculture and Food Research Organization, Kannondai 2-1-18, Tsukuba 305-8518, Japan
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Abstract
Oxygen is an indispensable substrate for many biochemical reactions in plants, including energy metabolism (respiration). Despite its importance, plants lack an active transport mechanism to distribute oxygen to all cells. Therefore, steep oxygen gradients occur within most plant tissues, which can be exacerbated by environmental perturbations that further reduce oxygen availability. Plants possess various responses to cope with spatial and temporal variations in oxygen availability, many of which involve metabolic adaptations to deal with energy crises induced by low oxygen. Responses are induced gradually when oxygen concentrations decrease and are rapidly reversed upon reoxygenation. A direct effect of the oxygen level can be observed in the stability, and thus activity, of various transcription factors that control the expression of hypoxia-induced genes. Additional signaling pathways are activated by the impact of oxygen deficiency on mitochondrial and chloroplast functioning. Here, we describe the molecular components of the oxygen-sensing pathway.
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Affiliation(s)
- Joost T van Dongen
- Institute of Biology I, Aachen Biology and Biotechnology, RWTH Aachen University, 52074 Aachen, Germany;
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Xie LJ, Yu LJ, Chen QF, Wang FZ, Huang L, Xia FN, Zhu TR, Wu JX, Yin J, Liao B, Yao N, Shu W, Xiao S. Arabidopsis acyl-CoA-binding protein ACBP3 participates in plant response to hypoxia by modulating very-long-chain fatty acid metabolism. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2015; 81:53-67. [PMID: 25284079 PMCID: PMC4309432 DOI: 10.1111/tpj.12692] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 09/21/2014] [Accepted: 09/29/2014] [Indexed: 05/02/2023]
Abstract
In Arabidopsis thaliana, acyl-CoA-binding proteins (ACBPs) are encoded by a family of six genes (ACBP1 to ACBP6), and are essential for diverse cellular activities. Recent investigations suggest that the membrane-anchored ACBPs are involved in oxygen sensing by sequestration of group VII ethylene-responsive factors under normoxia. Here, we demonstrate the involvement of Arabidopsis ACBP3 in hypoxic tolerance. ACBP3 transcription was remarkably induced following submergence under both dark (DS) and light (LS) conditions. ACBP3-overexpressors (ACBP3-OEs) showed hypersensitivity to DS, LS and ethanolic stresses, with reduced transcription of hypoxia-responsive genes as well as accumulation of hydrogen peroxide in the rosettes. In contrast, suppression of ACBP3 in ACBP3-KOs enhanced plant tolerance to DS, LS and ethanol treatments. By analyses of double combinations of OE-1 with npr1-5, coi1-2, ein3-1 as well as ctr1-1 mutants, we observed that the attenuated hypoxic tolerance in ACBP3-OEs was dependent on NPR1- and CTR1-mediated signaling pathways. Lipid profiling revealed that both the total amounts and very-long-chain species of phosphatidylserine (C42:2- and C42:3-PS) and glucosylinositolphosphorylceramides (C22:0-, C22:1-, C24:0-, C24:1-, and C26:1-GIPC) were significantly lower in ACBP3-OEs but increased in ACBP3-KOs upon LS exposure. By microscale thermophoresis analysis, the recombinant ACBP3 protein bound VLC acyl-CoA esters with high affinities in vitro. Further, a knockout mutant of MYB30, a master regulator of very-long-chain fatty acid (VLCFA) biosynthesis, exhibited enhanced sensitivities to LS and ethanolic stresses, phenotypes that were ameliorated by ACBP3-RNAi. Taken together, these findings suggest that Arabidopsis ACBP3 participates in plant response to hypoxia by modulating VLCFA metabolism.
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Affiliation(s)
| | | | | | - Feng-Zhu Wang
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
| | - Li Huang
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
| | - Fan-Nv Xia
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
| | - Tian-Ren Zhu
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
| | - Jian-Xin Wu
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
| | - Jian Yin
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
| | - Bin Liao
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
| | - Nan Yao
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
| | - Wensheng Shu
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
| | - Shi Xiao
- State Key Laboratory of Biocontrol and Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen UniversityGuangzhou, 510275, China
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Sanhueza D, Vizoso P, Balic I, Campos-Vargas R, Meneses C. Transcriptomic analysis of fruit stored under cold conditions using controlled atmosphere in Prunus persica cv. "Red Pearl". FRONTIERS IN PLANT SCIENCE 2015; 6:788. [PMID: 26483806 PMCID: PMC4586424 DOI: 10.3389/fpls.2015.00788] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 09/11/2015] [Indexed: 05/20/2023]
Abstract
Cold storage (CS) can induce a physiological disorder known as chilling injury (CI) in nectarine fruits. The main symptom is mealiness that is perceived as non-juicy fruit by consumers. Postharvest treatments such as controlled atmosphere (CA; a high CO2 concentration and low O2) have been used under cold conditions to avoid this disorder. With the objective of exploring the mechanisms involved in the CA effect on mealiness prevention, we analyzed transcriptomic changes under six conditions of "Red Pearl" nectarines by RNA-Seq. Our analysis included just harvested nectarines, juicy non-stored fruits, fruits affected for CI after CS and fruits stored in a combination of CA plus CS without CI phenotype. Nectarines stored in cold conditions combined with CA treatment resulted in less mealiness; we obtained 21.6% of juice content compared with just CS fruits (7.7%; mealy flesh). RNA-Seq data analyses were carried out to study the gene expression for different conditions assayed. During ripening, we detected that nectarines exposed to CA treatment expressed a similar number of genes compared with fruits that were not exposed to cold conditions. Firm fruits have more differentially expressed genes than soft fruits, which suggest that most important changes occur during CS. On the other hand, gene ontology analysis revealed enrichment mainly in metabolic and cellular processes. Differentially expressed genes analysis showed that low O2 concentrations combined with cold conditions slows the metabolic processes more than just the cold storage, resulting mainly in the suppression of primary metabolism and cold stress response. This is a significant step toward unraveling the molecular mechanism that explains the effectiveness of CA as a tool to prevent CI development on fruits.
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Affiliation(s)
- Dayan Sanhueza
- Facultad Ciencias Biológicas, Centro de Biotecnología Vegetal, Universidad Andres BelloSantiago, Chile
- FONDAP Center for Genome RegulationSantiago, Chile
| | - Paula Vizoso
- Facultad Ciencias Biológicas, Centro de Biotecnología Vegetal, Universidad Andres BelloSantiago, Chile
- FONDAP Center for Genome RegulationSantiago, Chile
| | - Iván Balic
- Facultad Ciencias Biológicas, Centro de Biotecnología Vegetal, Universidad Andres BelloSantiago, Chile
| | - Reinaldo Campos-Vargas
- Facultad Ciencias Biológicas, Centro de Biotecnología Vegetal, Universidad Andres BelloSantiago, Chile
| | - Claudio Meneses
- Facultad Ciencias Biológicas, Centro de Biotecnología Vegetal, Universidad Andres BelloSantiago, Chile
- *Correspondence: Claudio Meneses, Centro de Biotecnología Vegetal, Universidad Andrés Bello, República 217, 8370146 Santiago, Chile
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Yang CY. Ethylene and hydrogen peroxide are involved in hypoxia signaling that modulates AtERF73/HRE1 expression. PLANT SIGNALING & BEHAVIOR 2014; 9:e28583. [PMID: 24698791 PMCID: PMC4091573 DOI: 10.4161/psb.28583] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 03/18/2014] [Indexed: 05/20/2023]
Abstract
Reactive oxygen species (ROS) have been reported to trigger signaling pathways that interact with other signaling pathways mediated by nitric oxide, lipid messengers, and plant hormones. In a previous study, we demonstrated that ethylene was involved in hypoxia signaling to regulate the expression of downstream genes such as AtERF73/HRE1 and ADH1. Furthermore, H 2O 2 and ethylene interplay has an effect on AtERF73/HRE1 and ADH1 expression during the early stages of hypoxia signaling. Here, we propose a model for the main transcription factor AtERF73/HRE1, which is controlled by 3 pathways during hypoxia. These include an ethylene-dependent pathway, an ethylene-independent/H 2O 2-dependent pathway, and an ethylene and H 2O 2-independent pathway involved in hypoxia signaling to modulate AtERF73/HRE1.
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