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Jia X, Xiong Y, Xiong Y, Li D, Ji X, Lei X, You M, Bai S, Zhang J, Ma X. The molecular regulatory mechanism of reed canary grass under salt, waterlogging, and combined stress was analyzed by transcriptomic analysis. BMC PLANT BIOLOGY 2024; 24:857. [PMID: 39266955 PMCID: PMC11396401 DOI: 10.1186/s12870-024-05564-w] [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: 02/17/2024] [Accepted: 09/02/2024] [Indexed: 09/14/2024]
Abstract
BACKGROUND Reed canary grass has been identified as a suitable species for restoring plateau wetlands and understanding plant adaptation mechanisms in wetland environments. In this study, we subjected a reed canary grass cultivar 'Chuanxi' to waterlogging, salt, and combined stresses to investigate its phenotypic characteristics, physiological indices, and transcriptome changes under these conditions. RESULTS The results revealed that the growth rate was slower under salt stress than under waterlogging stress. The chlorophyll content and energy capture efficiency of the PS II reaction center decreased with prolonged exposure to each stress. Conversely, while the activities of enzymes associated with respiratory metabolism, as well as MDA, PRO, Na+, and K+-ATPase, increased. The formation of distinct aerenchyma was observed under waterlogging stress and combined stress. Transcriptome sequencing analysis identified 5,379, 4,169, and 14,993 DEGs under CK vs. W, CK vs. S, and CK vs. SW conditions, respectively. The WRKY was found to be the most abundant under waterlogging stress, whereas the MYB predominated under salt stress and combined stress. Glutathione metabolic pathways and Plant hormone signal transduction have also been found to play important roles in stress. CONCLUSION By integrating phenotypic, physiological, anatomical, and transcriptomic, this research provides valuable insights into how reed canary grass responds to salt, waterlogging, and combined stresses. These findings may inform the ecological application of reed canary grass in high-altitude wetlands and for breeding purposes.
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Affiliation(s)
- Xuejie Jia
- Sichuan Academy of Grassland Science, Chengdu, 610097, China
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yi Xiong
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yanli Xiong
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Daxu Li
- Sichuan Academy of Grassland Science, Chengdu, 610097, China
| | - Xiaofei Ji
- Sichuan Academy of Grassland Science, Chengdu, 610097, China
| | - Xiong Lei
- Sichuan Academy of Grassland Science, Chengdu, 610097, China
| | - Minghong You
- Sichuan Academy of Grassland Science, Chengdu, 610097, China
| | - Shiqie Bai
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621002, China
| | - Jianbo Zhang
- Sichuan Academy of Grassland Science, Chengdu, 610097, China.
| | - Xiao Ma
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China.
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Gui G, Zhang Q, Hu W, Liu F. Application of multiomics analysis to plant flooding response. FRONTIERS IN PLANT SCIENCE 2024; 15:1389379. [PMID: 39193215 PMCID: PMC11347887 DOI: 10.3389/fpls.2024.1389379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 07/19/2024] [Indexed: 08/29/2024]
Abstract
Flooding, as a natural disaster, plays a pivotal role in constraining the growth and development of plants. Flooding stress, including submergence and waterlogging, not only induces oxygen, light, and nutrient deprivation, but also alters soil properties through prolonged inundation, further impeding plant growth and development. However, hypoxia (or anoxia) is the most serious and direct damage to plants caused by flooding. Moreover, flooding disrupts the structural integrity of plant cell walls and compromises endoplasmic reticulum functionality, while hindering nutrient absorption and shifting metabolic processes from normal aerobic respiration to anaerobic respiration. It can be asserted that flooding exerts comprehensive effects on plants encompassing phenotypic changes, transcriptional alterations, protein dynamics, and metabolic shifts. To adapt to flooding environments, plants employ corresponding adaptive mechanisms at the phenotypic level while modulating transcriptomic profiles, proteomic characteristics, and metabolite levels. Hence, this study provides a comprehensive analysis of transcriptomic, proteomic, and metabolomics investigations conducted on flooding stress on model plants and major crops, elucidating their response mechanisms from diverse omics perspectives.
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Affiliation(s)
- Guangya Gui
- College of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang, China
- Lushan Botanical Garden, Jiangxi Province and Chinese Academy of Sciences, Jiujiang, China
| | - Qi Zhang
- College of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang, China
| | - Weiming Hu
- Lushan Botanical Garden, Jiangxi Province and Chinese Academy of Sciences, Jiujiang, China
| | - Fen Liu
- Lushan Botanical Garden, Jiangxi Province and Chinese Academy of Sciences, Jiujiang, China
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Sha S, Wang G, Liu J, Wang M, Wang L, Liu Y, Geng G, Liu J, Wang Y. Regulation of photosynthetic function and reactive oxygen species metabolism in sugar beet (Beta vulgaris L.) cultivars under waterlogging stress and associated tolerance mechanisms. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 210:108651. [PMID: 38653098 DOI: 10.1016/j.plaphy.2024.108651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 03/31/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
Sugar beet (Beta vulgaris L.) is an economically important sugar crop worldwide that is susceptible to sudden waterlogging stress during seedling cultivation, which poses a major threat to sugar beet development and production. Our understanding of the physiological basis of waterlogging tolerance in sugar beet is limited. To investigate the photosynthetic adaptation strategies of sugar beet to waterlogging stress conditions, the tolerant cultivar KUHN1260 (KU) and sensitive cultivar SV1433 (SV) were grown under waterlogging stress, and their photosynthetic function and reactive oxygen species (ROS) metabolism were assessed. Our results showed that waterlogging stress significantly reduced the photosynthetic pigment content, rubisco activity, and expression level of the photosynthetic enzyme genes SvRuBP, SvGAPDH, and SvPRK, gas exchange parameters, and chlorophyll fluorescence parameters, induced damage to the ultrastructure of the chloroplast of the two sugar beet cultivars, inhibited the photosynthetic carbon assimilation capacity of sugar beet leaves, damaged the structural stability of photosystem II (PSII), and disturbed the equilibrium between electrons at the acceptor and donor sides of PSII, which was the result of stomatal and non-stomatal limiting factors. Moreover, the level of ROS, H2O2, and O2▪-, antioxidant enzyme activity, and gene expression levels in the leaves of the two sugar beet cultivars increased over time under waterlogging stress; ROS accumulation was lower and antioxidant enzyme activities and gene expression levels were higher in the waterlogging-tolerant cultivar (KU) than the waterlogging-sensitive cultivar (SV). In sum, these responses in the more tolerant cultivars are associated with their resistance to waterlogging stress. Our findings will aid the breeding of waterlogging-tolerant sugar beet cultivars.
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Affiliation(s)
- Shanshan Sha
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & School of Life Sciences, Heilongjiang University, Harbin, 150080, China; School of Food Engineering, Harbin University, Harbin, 150000, China
| | - Gang Wang
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & School of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Jinling Liu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & School of Life Sciences, Heilongjiang University, Harbin, 150080, China; National Sugar Crop Improvement Centre, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China; Heilongjiang Sugar Beet Engineering Technology Research Center, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China
| | - Meihui Wang
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & School of Life Sciences, Heilongjiang University, Harbin, 150080, China; National Sugar Crop Improvement Centre, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China; Heilongjiang Sugar Beet Engineering Technology Research Center, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China
| | - Lihua Wang
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & School of Life Sciences, Heilongjiang University, Harbin, 150080, China
| | - Yonglong Liu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & School of Life Sciences, Heilongjiang University, Harbin, 150080, China; National Sugar Crop Improvement Centre, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China; Heilongjiang Sugar Beet Engineering Technology Research Center, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China
| | - Gui Geng
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & School of Life Sciences, Heilongjiang University, Harbin, 150080, China; National Sugar Crop Improvement Centre, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China; Heilongjiang Sugar Beet Engineering Technology Research Center, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China.
| | - Jiahui Liu
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & School of Life Sciences, Heilongjiang University, Harbin, 150080, China; National Sugar Crop Improvement Centre, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China; Heilongjiang Sugar Beet Engineering Technology Research Center, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China
| | - Yuguang Wang
- Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Ecological Restoration and Resource Utilization for Cold Region & School of Life Sciences, Heilongjiang University, Harbin, 150080, China; National Sugar Crop Improvement Centre, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China; Heilongjiang Sugar Beet Engineering Technology Research Center, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin, 150080, China.
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Wang X, Xiang Y, Sun M, Xiong Y, Li C, Zhang T, Ma W, Wang Y, Liu X. Transcriptomic and metabolomic analyses reveals keys genes and metabolic pathways in tea (Camellia sinensis) against six-spotted spider mite (Eotetranychus Sexmaculatus). BMC PLANT BIOLOGY 2023; 23:638. [PMID: 38072959 PMCID: PMC10712147 DOI: 10.1186/s12870-023-04651-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/30/2023] [Indexed: 12/18/2023]
Abstract
BACKGROUND Six-spotted spider mite (Eotetranychus sexmaculatus) is one of the most damaging pests of tea (Camellia sinensis). E. sexmaculatus causes great economic loss and affects tea quality adversely. In response to pests, such as spider mites, tea plants have evolved resistance mechanisms, such as expression of defense-related genes and defense-related metabolites. RESULTS To evaluate the biochemical and molecular mechanisms of resistance in C. sinensis against spider mites, "Tianfu-5" (resistant to E. sexmaculatus) and "Fuding Dabai" (susceptible to E. sexmaculatus) were inoculated with spider mites. Transcriptomics and metabolomics based on RNA-Seq and liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) technology were used to analyze changes in gene expression and metabolite content, respectively. RNA-Seq data analysis revealed that 246 to 3,986 differentially expressed genes (DEGs) were identified in multiple compared groups, and these DEGs were significantly enriched in various pathways, such as phenylpropanoid and flavonoid biosynthesis, plant-pathogen interactions, MAPK signaling, and plant hormone signaling. Additionally, the metabolome data detected 2,220 metabolites, with 194 to 260 differentially abundant metabolites (DAMs) identified in multiple compared groups, including phenylalanine, lignin, salicylic acid, and jasmonic acid. The combined analysis of RNA-Seq and metabolomic data indicated that phenylpropanoid and flavonoid biosynthesis, MAPK signaling, and Ca2+-mediated PR-1 signaling pathways may contribute to spider mite resistance. CONCLUSIONS Our findings provide insights for identifying insect-induced genes and metabolites and form a basis for studies on mechanisms of host defense against spider mites in C. sinensis. The candidate genes and metabolites identified will be a valuable resource for tea breeding in response to biotic stress.
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Affiliation(s)
- Xiaoping Wang
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Tea Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China.
| | - Yunjia Xiang
- Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Minshan Sun
- Henan Assist Research Biotechnology Co., Ltd, Zhengzhou, China
| | - Yuanyuan Xiong
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Tea Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Chunhua Li
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Tea Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Ting Zhang
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Tea Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Weiwei Ma
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Tea Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Yun Wang
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Tea Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Xiao Liu
- Tea Refining and Innovation Key Laboratory of Sichuan Province, Tea Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
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Li B, Hua W, Zhang S, Xu L, Yang C, Zhu Z, Guo Y, Zhou M, Jiao C, Xu Y. Physiological, Epigenetic, and Transcriptome Analyses Provide Insights into the Responses of Wheat Seedling Leaves to Different Water Depths under Flooding Conditions. Int J Mol Sci 2023; 24:16785. [PMID: 38069108 PMCID: PMC10706670 DOI: 10.3390/ijms242316785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 12/18/2023] Open
Abstract
Flooding stress, including waterlogging and submergence, is one of the major abiotic stresses that seriously affects the growth and development of plants. In the present study, physiological, epigenetic, and transcriptomic analyses were performed in wheat seedling leaves under waterlogging (WL), half submergence (HS), and full submergence (FS) treatments. The results demonstrate that FS increased the leaves' hydrogen peroxide (H2O2) and malondialdehyde (MDA) contents and reduced their chlorophyll contents (SPAD), photosynthetic efficiency (Fv/Fm), and shoot dry weight more than HS and WL. In addition, FS increased catalase (CAT) and peroxidase (POD) activities more than HS and WL. However, there were no significant differences in the contents of H2O2, MDA, SPAD, and Fv/Fm, and the activities of superoxide dismutase (SOD) and POD between the HS and WL treatments. The changes in DNA methylation were related to stress types, increasing under the WL and HS treatments and decreasing under the FS treatment. Additionally, a total of 9996, 10,619, and 24,949 genes were differentially expressed under the WL, HS, and FS treatments, respectively, among which the 'photosynthesis', 'phenylpropanoid biosynthesis', and 'plant hormone signal transduction' pathways were extensively enriched under the three flooding treatments. The genes involved in these pathways showed flooding-type-specific expression. Moreover, flooding-type-specific responses were observed in the three conditions, including the enrichment of specific TFs and response pathways. These results will contribute to a better understanding of the molecular mechanisms underlying the responses of wheat seedling leaves to flooding stress and provide valuable genetic and epigenetic information for breeding flood-tolerant varieties of wheat.
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Affiliation(s)
- Bo Li
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement and Key Laboratory of Crop Molecular Breeding, Food Crops Institute, Hubei Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (B.L.)
| | - Wei Hua
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China;
| | - Shuo Zhang
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement and Key Laboratory of Crop Molecular Breeding, Food Crops Institute, Hubei Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (B.L.)
| | - Le Xu
- Hubei Collaborative Innovation Centre for the Industrialization of Major Grain Crops, College of Agriculture, Yangtze University, Jingzhou 434025, China
| | - Caixian Yang
- Hubei Collaborative Innovation Centre for the Industrialization of Major Grain Crops, College of Agriculture, Yangtze University, Jingzhou 434025, China
| | - Zhanwang Zhu
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement and Key Laboratory of Crop Molecular Breeding, Food Crops Institute, Hubei Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (B.L.)
| | - Ying Guo
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement and Key Laboratory of Crop Molecular Breeding, Food Crops Institute, Hubei Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (B.L.)
| | - Meixue Zhou
- Tasmanian Institute of Agriculture, University of Tasmania, Newnham Drive, Launceston, TAS 7250, Australia
| | - Chunhai Jiao
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement and Key Laboratory of Crop Molecular Breeding, Food Crops Institute, Hubei Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (B.L.)
| | - Yanhao Xu
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement and Key Laboratory of Crop Molecular Breeding, Food Crops Institute, Hubei Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Wuhan 430064, China; (B.L.)
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6
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Jia X, Xiong Y, Xiong Y, Li D, Yu Q, Lei X, You M, Bai S, Zhang J, Ma X. Identification and Validation of Reference Genes for RT-qPCR Analysis in Reed Canary Grass during Abiotic Stress. Genes (Basel) 2023; 14:1790. [PMID: 37761930 PMCID: PMC10530813 DOI: 10.3390/genes14091790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Reed canary grass (Phalaris arundinacea L.) is known for its tolerance to drought, heavy metals, and waterlogging, making it a popular choice for forage production and wetland restoration in the Qinghai-Tibet Plateau (QTP). To accurately assess gene expression in reed canary grass under different abiotic stresses, suitable reference genes need to be identified and validated. Thirteen candidate reference gene sequences were selected and screened using RT-qPCR to detect their expression levels in reed canary grass leaves under drought, salt, cadmium, and waterlogging stresses. Four algorithms were used to assess the stability of the expression levels of the candidate reference genes. The most stably expressed genes were UBC and H3 under drought Cd, ETF and CYT under salt stress, and ETF and TUB under waterlogging stress. GAPDH was found to be less stable under abiotic stresses. PIP-1, PAL, NAC 90, and WRKY 72A were selected as response genes for quantitative expression assessment under drought, salt, Cd, and waterlogging stresses to confirm the accuracy of the selected stable reference genes. These results provide a theoretical reference for assessing gene expression in reed canary grass under abiotic stresses.
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Affiliation(s)
- Xuejie Jia
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.J.)
- Sichuan Academy of Grassland Science, Chengdu 610097, China; (D.L.)
| | - Yi Xiong
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.J.)
| | - Yanli Xiong
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.J.)
| | - Daxu Li
- Sichuan Academy of Grassland Science, Chengdu 610097, China; (D.L.)
| | - Qinqin Yu
- Sichuan Academy of Grassland Science, Chengdu 610097, China; (D.L.)
| | - Xiong Lei
- Sichuan Academy of Grassland Science, Chengdu 610097, China; (D.L.)
| | - Minghong You
- Sichuan Academy of Grassland Science, Chengdu 610097, China; (D.L.)
| | - Shiqie Bai
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621002, China
| | - Jianbo Zhang
- Sichuan Academy of Grassland Science, Chengdu 610097, China; (D.L.)
| | - Xiao Ma
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; (X.J.)
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7
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Ye C, Wang S, Wang Y, Zhou T, Li R. Impacts of human pressure and climate on biodiversity-multifunctionality relationships on the Qinghai-Tibetan Plateau. FRONTIERS IN PLANT SCIENCE 2023; 14:1106035. [PMID: 37332689 PMCID: PMC10270690 DOI: 10.3389/fpls.2023.1106035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 04/28/2023] [Indexed: 06/20/2023]
Abstract
Many studies have investigated the effects of environmental context on biodiversity or multifunctionality in alpine regions, but it is uncertain how human pressure and climate may affect their relationships. Here, we combined the comparative map profile method with multivariate datasets to assess the spatial pattern of ecosystem multifunctionality and further identify the effects of human pressure and climate on the spatial distribution of biodiversity-multifunctionality relationships in alpine ecosystems of the Qinghai-Tibetan Plateau (QTP). Our results indicate that at least 93% of the areas in the study region show a positive correlation between biodiversity and ecosystem multifunctionality across the QTP. Biodiversity-multifunctionality relationships with increasing human pressure show a decreasing trend in the forest, alpine meadow, and alpine steppe ecosystems, while an opposite pattern was found in the alpine desert steppe ecosystem. More importantly, aridity significantly strengthened the synergistic relationship between biodiversity and ecosystem multifunctionality in forest and alpine meadow ecosystems. Taken together, our results provide insights into the importance of protecting and maintaining biodiversity and ecosystem multifunctionality in response to climate change and human pressure in the alpine region.
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Affiliation(s)
- Chongchong Ye
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing, China
| | - Shuai Wang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing, China
| | - Yi Wang
- School of Life Sciences and State Key Lab of Biological Control, Sun Yat-sen University, Guangzhou, China
| | - Tiancai Zhou
- Synthesis Research Centre of Chinese Ecosystem Research Network, Key Laboratory of Ecosystem Network Observation and Modelling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Ruowei Li
- College of Grassland, Resource and Environment, Inner Mongolia Agricultural University, Hohhot, China
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Luo Q, Xie H, Chen Z, Ma Y, Yang H, Yang B, Ma Y. Morphology, photosynthetic physiology and biochemistry of nine herbaceous plants under water stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1147208. [PMID: 37063188 PMCID: PMC10098446 DOI: 10.3389/fpls.2023.1147208] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/08/2023] [Indexed: 06/19/2023]
Abstract
Global climate warming and shifts in rainfall patterns are expected to trigger increases in the frequency and magnitude of drought and/or waterlogging stress in plants. To cope with water stress, plants develop diverse tactics. However, the adoption capability and mechanism vary depending upon the plant species identity as well as stress duration and intensity. The objectives of this study were to evaluate the species-dependent responses of alpine herbaceous species to water stress. Nine herbaceous species were subjected to different water stresses (including moderate drought and moderate waterlogging) in pot culture using a randomized complete block design with three replications for each treatment. We hypothesized that water stress would negatively impact plant growth and metabolism. We found considerable interspecies differences in morphological, physiological, and biochemical responses when plants were exposed to the same water regime. In addition, we observed pronounced interactive effects of water regime and plant species identity on plant height, root length, root/shoot ratio, biomass, and contents of chlorophyll a, chlorophyll b, chlorophyll (a+b), carotenoids, malondialdehyde, soluble sugar, betaine, soluble protein and proline, implying that plants respond to water regime differently. Our findings may cast new light on the ecological restoration of grasslands and wetlands in the Qinghai-Tibetan Plateau by helping to select stress-tolerant plant species.
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Affiliation(s)
- Qiaoyu Luo
- School of Life Sciences, Qinghai Normal University, Xining, China
- Qinghai Provincial Key Laboratory of Medicinal Plant and Animal Resources of Qinghai-Tibet Plateau, Qinghai Normal University, Xining, China
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
| | - Huichun Xie
- School of Life Sciences, Qinghai Normal University, Xining, China
- Qinghai Provincial Key Laboratory of Medicinal Plant and Animal Resources of Qinghai-Tibet Plateau, Qinghai Normal University, Xining, China
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, China
| | - Zhi Chen
- School of Life Sciences, Qinghai Normal University, Xining, China
- Qinghai Provincial Key Laboratory of Medicinal Plant and Animal Resources of Qinghai-Tibet Plateau, Qinghai Normal University, Xining, China
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, China
| | - Yonggui Ma
- School of Life Sciences, Qinghai Normal University, Xining, China
- Qinghai Provincial Key Laboratory of Medicinal Plant and Animal Resources of Qinghai-Tibet Plateau, Qinghai Normal University, Xining, China
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, China
| | - Haohong Yang
- School of Life Sciences, Qinghai Normal University, Xining, China
- Qinghai Provincial Key Laboratory of Medicinal Plant and Animal Resources of Qinghai-Tibet Plateau, Qinghai Normal University, Xining, China
- Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, China
| | - Bing Yang
- Sichuan Academy of Giant Panda, Chengdu, China
| | - Yushou Ma
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, China
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9
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Luan H, Li H, Li Y, Chen C, Li S, Wang Y, Yang J, Xu M, Shen H, Qiao H, Wang J. Transcriptome analysis of barley (Hordeum vulgare L.) under waterlogging stress, and overexpression of the HvADH4 gene confers waterlogging tolerance in transgenic Arabidopsis. BMC PLANT BIOLOGY 2023; 23:62. [PMID: 36710329 PMCID: PMC9885653 DOI: 10.1186/s12870-023-04081-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Waterlogging is one of the major abiotic stresses in barley and greatly reduces grain yield and quality. To explore the mechanism controlling waterlogging tolerance in barley, physiological, anatomical and transcriptional analyses were performed in two contrasting barley varieties, viz. Franklin (susceptible) and TX9425 (tolerant). RESULTS Compared to Franklin, TX9425 had more adventitious roots and aerenchymas and higher antioxidant enzyme activities. A total of 3064 and 5693 differentially expressed genes (DEGs) were identified in TX9425 after 24 h and 72 h of waterlogging treatment, respectively, while 2297 and 8462 DEGs were identified in Franklin. The results suggested that TX9425 was less affected by waterlogging stress after 72 h of treatment. The DEGs were enriched mainly in energy metabolism, hormone regulation, reactive oxygen species (ROS) scavenging, and cell wall-modifying enzymes. Alcohol dehydrogenase (ADH) plays an important role in response to waterlogging stress. We found that HvADH4 was significantly upregulated under waterlogging stress in TX9425. Transgenic Arabidopsis overexpressing HvADH4 displayed higher activity of antioxidant enzymes and was more tolerant to waterlogging than the wild type (WT). CONCLUSIONS The current results provide valuable information that will be of great value for the exploration of new candidate genes for molecular breeding of waterlogging tolerance in barley.
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Affiliation(s)
- Haiye Luan
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, 224002 Jiangsu China
- Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection, Yancheng, 224002 Jiangsu China
| | - Hongtao Li
- Lianyungang Academy of Agricultural Sciences, Lianyungang, 222000 China
| | - Yu Li
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, 224002 Jiangsu China
| | - Changyu Chen
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, 224002 Jiangsu China
| | - Shufeng Li
- Lianyungang Academy of Agricultural Sciences, Lianyungang, 222000 China
| | - Yu Wang
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, 224002 Jiangsu China
| | - Ju Yang
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, 224002 Jiangsu China
| | - Meng Xu
- College of Marine and Biological Engineering, Yancheng Teachers University, Yancheng, 224002 Jiangsu China
| | - Huiquan Shen
- Institute of Agricultural Science in Jiangsu Coastal Areas, Yancheng, 224002 China
| | - Hailong Qiao
- Institute of Agricultural Science in Jiangsu Coastal Areas, Yancheng, 224002 China
| | - Jun Wang
- Lianyungang Academy of Agricultural Sciences, Lianyungang, 222000 China
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Qu M, Zheng Y, Bi L, Yang X, Shang P, Zhou X, Zeng B, Shen B, Li W, Fan Y, Zeng B. Comparative transcriptomic analysis of the gene expression and underlying molecular mechanism of submergence stress response in orchardgrass roots. FRONTIERS IN PLANT SCIENCE 2023; 13:1104755. [PMID: 36704155 PMCID: PMC9871833 DOI: 10.3389/fpls.2022.1104755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 12/20/2022] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Submergence stress creates a hypoxic environment. Roots are the first plant organ to face these low-oxygen conditions, which causes damage and affects the plant growth and yield. Orchardgrass (Dactylis glomerata L.) is one of the most important cold-season forage grasses globally. However, their submergence stress-induced gene expression and the underlying molecular mechanisms of orchardgrass roots are still unknown. METHODS Using the submergence-tolerant 'Dianbei' and submergence-sensitive 'Anba', the transcriptomic analysis of orchardgrass roots at different time points of submergence stress (0 h, 8 h, and 24 h) was performed. RESULTS We obtained 118.82Gb clean data by RNA-Seq. As compared with the control, a total of 6663 and 9857 differentially expressed genes (DEGs) were detected in Dianbei, while 7894 and 11215 DEGs were detected in Anba at 8 h and 24 h post-submergence-stress, respectively. Gene Ontology (GO) enrichment analysis obtained 986 terms, while Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis obtained 123 pathways. Among them, the DEGs in plant hormones, mitogen-activated protein kinase (MAPK) and Ca2+ signal transduction were significantly differentially expressed in Dianbei, but not in Anba. DISCUSSION This study was the first to molecularly elucidate the submergence stress tolerance in the roots of two orchardgrass cultivars. These findings not only enhanced our understanding of the orchardgrass submergence tolerance, but also provided a theoretical basis 36 for the cultivation of submergence-tolerant forage varieties.
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Affiliation(s)
- Minghao Qu
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Yuqian Zheng
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Lei Bi
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Xingyun Yang
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Panpan Shang
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Xiaoli Zhou
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Bing Zeng
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Bingna Shen
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Wenwen Li
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Yan Fan
- Institute of Prataculture, Chongqing Academy of Animal Science, Chongqing, China
| | - Bing Zeng
- College of Animal Science and Technology, Southwest University, Chongqing, China
- Chongqing University Herbivore Engineering Research Center, Chongqing, China
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11
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He L, Yan J, Ding X, Jin H, Zhang H, Cui J, Zhou Q, Yu J. Integrated analysis of transcriptome and microRNAs associated with exogenous calcium-mediated enhancement of hypoxic tolerance in cucumber seedlings ( Cucumis sativus L.). FRONTIERS IN PLANT SCIENCE 2023; 13:994268. [PMID: 36684729 PMCID: PMC9846352 DOI: 10.3389/fpls.2022.994268] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 11/30/2022] [Indexed: 06/01/2023]
Abstract
Plants often suffer from hypoxic stress due to flooding caused by extreme weather. Hypoxia usually leads to restricted oxygen supply and alters metabolic patterns from aerobic to anaerobic. Cucumber roots are fragile and highly sensitive to damage from hypoxic stress. The purpose of this study was to investigate the regulatory mechanism of exogenous calcium alleviating hypoxic stress in cucumber through transcriptome and small RNAs analysis. Three treatments were performed in this paper, including untreated-control (CK), hypoxic stress (H), and hypoxic stress + exogenous calcium treatment (H + Ca2+). A large number of differentially expressed genes (DEGs) were identified, 1,463 DEGs between CK vs H, 3,399 DEGs between H vs H + Ca2+, and 5,072 DEGs between CK vs H + Ca2+, respectively. KEGG analysis of DEGs showed that exogenous calcium could activate hormone signaling pathways (ethylene, ABA, IAA and cytokinin), transcription factors (MYB, MYB-related, bHLH, bZIP, and WRKY), calcium signaling and glycolysis pathway to mitigating hypoxic stress in cucumber seedlings. Additionally, miRNA and their target genes were detected and predicted between treatments. The target genes of these miRNAs revealed that auxin, cellulose synthase, and mitochondrial ribosomal related genes (Csa2G315390, Csa6G141390, Csa4G053280, and Csa6G310480) probably play in the improvement of the hypoxic tolerance of cucumber seedlings through exogenous calcium application. In short, our data adds new information to the mechanism of exogenous calcium mitigation of hypoxic stress injury in cucumber seedlings at transcriptional and post-transcriptional levels.
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Affiliation(s)
- Lizhong He
- Shanghai Key Lab of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Jun Yan
- Shanghai Key Lab of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Xiaotao Ding
- Shanghai Key Lab of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Haijun Jin
- Shanghai Key Lab of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Hongmei Zhang
- Shanghai Key Lab of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Jiawei Cui
- Shanghai Key Lab of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Qiang Zhou
- Shanghai Key Lab of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
- Shanghai Dushi Green Engineering Co., Ltd., Shanghai, China
| | - Jizhu Yu
- Shanghai Key Lab of Protected Horticultural Technology, Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
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12
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Mollard FPO, Di Bella CE, Loguzzo MB, Grimoldi AA, Striker GG. High Recovery from Either Waterlogging or Drought Overrides Any Beneficial Acclimation of Chloris gayana Facing a Subsequent Round of Stress. PLANTS (BASEL, SWITZERLAND) 2022; 11:2699. [PMID: 36297722 PMCID: PMC9610420 DOI: 10.3390/plants11202699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/15/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Climate models predict that plants will face extreme fluctuations in water availability in future global change scenarios. Then, forage production will be more frequently subjected to the destabilizing pressure of sequentially occurring waterlogging and drought events. While the isolated effects of drought (D) and waterlogging (WL) are well characterized, little is known about the consequences when both stresses occur sequentially. We hypothesized that plants sequentially subjected to opposite water scenarios (D followed by WL or vice versa) are less stress tolerant than plants experiencing repetitions of the same type of water stress (i.e., D + D or WL + WL) due to contrasting acclimation and allocation to either shoots (WL) or roots (D). Chloris gayana (a tropical forage grass capable of tolerating either D and WL) plants were randomly assigned to nine treatments (a sequence of two stress rounds-WL or D-each followed by a recovery phase at field capacity). Relative growth rates and allometric responses were measured after each stress round and recovery period. In the first round of stress, both WL and D reduced plant RGR similarly, despite their allocation being opposite-prioritizing shoots or roots under WL and D, respectively. The high recovery displayed after either WL or D overrode any possible acclimation of the plants facing a second round of water stress. We conclude that the tolerance of C. gayana to sequential water stress (either for WL or D) is likely to depend more heavily on its recovery ability than on its previous adjustment to any stress scenario that may evoke memory responses. Knowledge like this could help improve forage grass breeding and the selection of cultivars for poorly drained soils subject to sequential stress events.
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Affiliation(s)
- Federico P. O. Mollard
- IFEVA, CONICET, Cátedra de Fisiología Vegetal, Departamento de Biología Aplicada y Alimentos, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires C1417DSE, Argentina
| | - Carla E. Di Bella
- IFEVA, CONICET, Cátedra de Forrajicultura, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires C1417DSE, Argentina
| | - María B. Loguzzo
- Cátedra de Fisiología Vegetal, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires C1417DSE, Argentina
| | - Agustín A. Grimoldi
- IFEVA, CONICET, Cátedra de Forrajicultura, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires C1417DSE, Argentina
| | - Gustavo G. Striker
- IFEVA, CONICET, Cátedra de Fisiología Vegetal, Departamento de Biología Aplicada y Alimentos, Facultad de Agronomía, Universidad de Buenos Aires, Av. San Martín 4453, Buenos Aires C1417DSE, Argentina
- UWA School of Agriculture and Environment, Faculty of Science, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
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13
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Wang X, Lei X, Zhang C, He P, Zhong J, Bai S, Li D, Deng X, Lin H. Physiological and molecular responses of Phalaris arundinacea under salt stress on the Tibet plateau. JOURNAL OF PLANT PHYSIOLOGY 2022; 274:153715. [PMID: 35609373 DOI: 10.1016/j.jplph.2022.153715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/04/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Phalaris arundinacea, with its characteristics of rapid growth and high biological yield, is regarded as an excellent forage grass in the Qinghai-Tibetan Plateau region of China. To explore the physiological and molecular response mechanism of Phalaris arundinacea under salt stress, we monitored the biomass and physiological indexes of two locally grown strains under conditions of exposure to 150 and 300 mM NaCl solution. Z0611 exhibited better salt stress tolerance than YS. Transcriptome sequencing analysis showed that YS and Z0611 had 1713 and 4290 differentially expressed genes (DEGs), respectively, including on metabolic processes, single-organism process, catalytic activity, and plant hormone signal transduction in the GO and KEGG databases. We also identified a large number of genes involved in hormone signaling, antioxidant systems, ion homeostasis, and photosynthetic systems. Our study provides physiological and molecular insight for establishing a salt resistance database and mining salt tolerance genes in Phalaris arundinacea, and also provides theoretical guidance for the restoration of saline-alkali land on the Qinghai-Tibet Plateau.
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Affiliation(s)
- Xin Wang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University, Chengdu, 610065, Sichuan, China
| | - Xiong Lei
- Sichuan Academy of Grassland Science, Chengdu, Sichuan, 611731, China
| | - Changbing Zhang
- Sichuan Academy of Grassland Science, Chengdu, Sichuan, 611731, China
| | - Peijian He
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University, Chengdu, 610065, Sichuan, China
| | - Jialai Zhong
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University, Chengdu, 610065, Sichuan, China
| | - Shiqie Bai
- Sichuan Academy of Grassland Science, Chengdu, Sichuan, 611731, China
| | - Daxu Li
- Sichuan Academy of Grassland Science, Chengdu, Sichuan, 611731, China.
| | - Xingguang Deng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University, Chengdu, 610065, Sichuan, China.
| | - Honghui Lin
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan University, Chengdu, 610065, Sichuan, China.
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14
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Xie X, Zhang X, Shen J, Du K. Poplar's Waterlogging Resistance Modeling and Evaluating: Exploring and Perfecting the Feasibility of Machine Learning Methods in Plant Science. FRONTIERS IN PLANT SCIENCE 2022; 13:821365. [PMID: 35222479 PMCID: PMC8874143 DOI: 10.3389/fpls.2022.821365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/20/2022] [Indexed: 06/14/2023]
Abstract
Floods, as one of the most common disasters in the natural environment, have caused huge losses to human life and property. Predicting the flood resistance of poplar can effectively help researchers select seedlings scientifically and resist floods precisely. Using machine learning algorithms, models of poplar's waterlogging tolerance were established and evaluated. First of all, the evaluation indexes of poplar's waterlogging tolerance were analyzed and determined. Then, significance testing, correlation analysis, and three feature selection algorithms (Hierarchical clustering, Lasso, and Stepwise regression) were used to screen photosynthesis, chlorophyll fluorescence, and environmental parameters. Based on this, four machine learning methods, BP neural network regression (BPR), extreme learning machine regression (ELMR), support vector regression (SVR), and random forest regression (RFR) were used to predict the flood resistance of poplar. The results show that random forest regression (RFR) and support vector regression (SVR) have high precision. On the test set, the coefficient of determination (R2) is 0.8351 and 0.6864, the root mean square error (RMSE) is 0.2016 and 0.2780, and the mean absolute error (MAE) is 0.1782 and 0.2031, respectively. Therefore, random forest regression (RFR) and support vector regression (SVR) can be given priority to predict poplar flood resistance.
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Affiliation(s)
- Xuelin Xie
- College of Sciences, Huazhong Agricultural University, Wuhan, China
| | | | - Jingfang Shen
- College of Sciences, Huazhong Agricultural University, Wuhan, China
| | - Kebing Du
- College of Horticulture and Forestry Sciences, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan, China
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