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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. Front Plant Sci 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Liu CJ, Lyu CY, Ai XZ, Bi HG. [Effects of fulvic acid on photosynthetic characteristics, yield and quality of cucumber under drought stress]. Ying Yong Sheng Tai Xue Bao 2022; 33:1300-1310. [PMID: 35730089 DOI: 10.13287/j.1001-9332.202205.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Fulvic acid (FA) participates in the regulation of drought stress tolerance in plants, but the underlying mechanisms remain unclear. We carried out an experiment with cucumber cultivar 'Jinyou 35' as the test material and the polyethylene glycol (PEG-6000) being used to simulate drought stress. The concentration effect of FA on drought alleviation of cucumber as well as the effect of FA on photosynthetic enzymes activities, chloroplast ultrastructure, fluorescence parameters, water use efficiency, yield and quality of cucumber plants were studied through spraying FA with different concentrations (0, 100, 300, 500, 700 and 900 mg·L-1). The results showed that FA with different concentrations significantly promoted the relative water content and leaf area and decreased drought injure index as well as the electrolyte leakage and malondialdehyde (MDA) content, compared with the control (0 mg·L-1) under drought stress. The mitigative effect of FA increased first and then decreased with the increases of FA concentration, with 700 mg·L-1 FA showing the best effect. FA significantly enhanced the chlorophyll content, Rubiasco and Rubisco activase (RCA) activities and gene expression, net photosynthesis (Pn), maximal photochemical efficiency of PSⅡin darkness, actual photochemical efficiency, absorbed light energy per unit area, captured light energy per unit area, quantum yield of electron transport and PSⅠ activity, decreased the increase of K point and maintained chloroplast ultrastructure. The experiment in solar-greenhouse showed that FA obviously increased water use efficiency, promoted dry matter accumulation as well as the contents of Vc, soluble sugar, soluble protein and free amino acid, and decreased tannin content. Our results suggested that FA could improve the yield and quality of cucumber in solar greenhouse under drought stress.
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Affiliation(s)
- Cai-Juan Liu
- College of Horticulture Science and Engineering, Shandong Agricultural University/State Key Laboratory of Crop Biology/Key Laboratory of Horticultural Crop Biology and Germplasm Innovation in Huang Huai Region of Ministry of Agriculture/Collaborative Innovation Center of Shandong Province with High Quality and Efficient Production of Fruit and Vegetable, Tai'an 271018, Shandong, China
| | - Chun-Yu Lyu
- College of Horticulture Science and Engineering, Shandong Agricultural University/State Key Laboratory of Crop Biology/Key Laboratory of Horticultural Crop Biology and Germplasm Innovation in Huang Huai Region of Ministry of Agriculture/Collaborative Innovation Center of Shandong Province with High Quality and Efficient Production of Fruit and Vegetable, Tai'an 271018, Shandong, China
| | - Xi-Zhen Ai
- College of Horticulture Science and Engineering, Shandong Agricultural University/State Key Laboratory of Crop Biology/Key Laboratory of Horticultural Crop Biology and Germplasm Innovation in Huang Huai Region of Ministry of Agriculture/Collaborative Innovation Center of Shandong Province with High Quality and Efficient Production of Fruit and Vegetable, Tai'an 271018, Shandong, China
| | - Huan-Gai Bi
- College of Horticulture Science and Engineering, Shandong Agricultural University/State Key Laboratory of Crop Biology/Key Laboratory of Horticultural Crop Biology and Germplasm Innovation in Huang Huai Region of Ministry of Agriculture/Collaborative Innovation Center of Shandong Province with High Quality and Efficient Production of Fruit and Vegetable, Tai'an 271018, Shandong, China
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Zhang L, Zhang Z, Fang S, Liu Y, Shang X. Metabolome and Transcriptome Analyses Unravel the Molecular Regulatory Mechanisms Involved in Photosynthesis of Cyclocarya paliurus under Salt Stress. Int J Mol Sci 2022; 23:ijms23031161. [PMID: 35163101 PMCID: PMC8835658 DOI: 10.3390/ijms23031161] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/17/2022] [Accepted: 01/17/2022] [Indexed: 12/04/2022] Open
Abstract
Photosynthesis is the primary life process in nature, and how to improve photosynthetic capacity under abiotic stresses is crucial to carbon fixation and plant productivity. As a multi-functional tree species, the leaves of Cyclocarya paliurus possess antihypertensive and hypoglycemic activities. However, the regulatory mechanism involved in the photosynthetic process of C. paliurus exposed to salinity has not yet been elucidated. In this study, the photosynthetic characteristics of C. paliurus seedlings, such as photosynthetic rate (Pn), stomatal conductance (Gs), and electron transfer rate (ETR), were investigated under different salt concentrations, while the metabolome and transcriptome analyses were conducted to unravel its molecular regulatory mechanisms. Salt stress not only significantly affected photosynthetic characteristics of C. paliurus seedlings, but also severely modified the abundance of metabolites (such as fumaric acid, sedoheptulose-7-phosphate, d-fructose-1,6-bisphosphate, and 3-phospho-d-glyceroyl phosphate) involved in central carbon metabolism, and the expression of photosynthetic genes. Through the co-expression network analysis, a total of 27 transcription factors (including ERFs, IDD, DOF, MYB, RAP) were identified to regulate photosynthetic genes under salt stress. Our findings preliminarily clarify the molecular regulatory network involved in the photosynthetic process of C. paliurus under salt stress and would drive progress in improving the photosynthetic capacity and productivity of C. paliurus by molecular technology.
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Affiliation(s)
- Lei Zhang
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China; (L.Z.); (Z.Z.); (Y.L.); (X.S.)
| | - Zijie Zhang
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China; (L.Z.); (Z.Z.); (Y.L.); (X.S.)
| | - Shengzuo Fang
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China; (L.Z.); (Z.Z.); (Y.L.); (X.S.)
- Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Correspondence: or ; Tel.: +86-25-854-28603
| | - Yang Liu
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China; (L.Z.); (Z.Z.); (Y.L.); (X.S.)
| | - Xulan Shang
- College of Forestry, Nanjing Forestry University, Nanjing 210037, China; (L.Z.); (Z.Z.); (Y.L.); (X.S.)
- Co-Innovation Centre for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
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Guan C, Zhao X, Qu T, Zhong Y, Hou C, Lin Z, Xu J, Tang X, Wang Y. Physiological functional traits explain morphological variation of Ulva prolifera during the drifting of green tides. Ecol Evol 2022; 12:e8504. [PMID: 35136557 PMCID: PMC8809434 DOI: 10.1002/ece3.8504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 11/11/2021] [Accepted: 12/07/2021] [Indexed: 11/29/2022] Open
Abstract
Ulva prolifera green tides, one of the greatest marine ecological disasters, originate in the southern Yellow Sea of China and obtain the highest biomass in Haizhou Bay (latitude around 35° N) during northward drift. U. prolifera shows different morphologies from southern Haizhou Bay (SH) to northern Haizhou Bay (NH). Owing to the distinct nutrient environments between SH and NH, we hypothesized that thalli in NH with poor nutrients increased the surface area to volume ratio (SA:VOL) to better absorb nutrients. Here, we tested this hypothesis by comparing the SA:VOL of thalli in SH and NH. The results showed that the thalli in NH had a lower SA:VOL than those in SH, and SA:VOL had positive relationships with temperature and nutrients, contrary to the general hypothesis. The novel results suggested that morphological differences of U. prolifera were the result of developmental state rather than environmental acclimation. Indicators of reproduction (reproductive allocation ratio) were negatively related to variation in tissue contents of C, N, P, and crude protein, whereas indicators of growth (tissue contents of C, N, P, and crude protein) showed significant positive influences on SA:VOL. The results indicated that a trade-off relationship between reproduction and growth existed in the northward drift. All the results suggested that physiological functional traits affected morphological variation of U. prolifera in different environmental conditions during the drifting of green tides. This study presents new insights into the opportunist species nature of U. prolifera through morphological variation and associated functional consequences.
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Affiliation(s)
- Chen Guan
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Xinyu Zhao
- Laboratory for Marine Ecology and Environmental ScienceQingdao National Laboratory for Marine Science and TechnologyQingdaoChina
| | - Tongfei Qu
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Yi Zhong
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Chengzong Hou
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Zhihao Lin
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Jinhui Xu
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
| | - Xuexi Tang
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
- Laboratory for Marine Ecology and Environmental ScienceQingdao National Laboratory for Marine Science and TechnologyQingdaoChina
| | - Ying Wang
- College of Marine Life SciencesOcean University of ChinaQingdaoChina
- Laboratory for Marine Ecology and Environmental ScienceQingdao National Laboratory for Marine Science and TechnologyQingdaoChina
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Zhao X, Zhong Y, Zhang H, Qu T, Jiang Y, Tang X, Wang Y. Cooperation Between Photosynthetic and Antioxidant Systems: An Important Factor in the Adaptation of Ulva prolifera to Abiotic Factors on the Sea Surface. Front Plant Sci 2019; 10:648. [PMID: 31178877 PMCID: PMC6537605 DOI: 10.3389/fpls.2019.00648] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 04/30/2019] [Indexed: 05/22/2023]
Abstract
Large-scale green tides have occurred continuously in the Yellow Sea of China from 2007 to 2018, and the causative species of the Yellow Sea green tide (YSGT) is Ulva prolifera. The thalli form floated thallus mats, and the thalli from different layers of the thallus mat suffer significantly different environmental conditions. In the present study, the environmental conditions of the surface layer (SL), middle layer (ML), and lower layer (LL) of the thallus mat from mid-June (Stage I) to mid-July (Stage II) were simulated. Photosynthetic traits and antioxidant systems were measured. The results showed that (1) photoprotective [non-photochemical quenching (NPQ) and cyclic electron transport (CEF)] and antioxidant systems both play important roles in protecting against abiotic factors in U. prolifera. (2) Cooperation between NPQ and CEF was observed in the ML group; CEF and the antioxidant system in the SL group work synergistically to protect the thalli. Furthermore, an inferred spatiotemporal attribute regarding the YSGT is presented: the significant changes in abiotic factors on the sea surface can easily affect the thalli of SL and ML from mid-June to mid-July, and those of LL can be affected in mid-July. This cooperation combined with the spatiotemporal attributes offers an explanation for the annual occurrence of the YSGT. HIGHLIGHTS -Adaptive mechanisms of Ulva prolifera against abiotic factors. -Cooperation between photosynthetic and antioxidant systems. -Spatiotemporal attributes regarding the Yellow Sea green tide are presented.
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Affiliation(s)
- Xinyu Zhao
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Yi Zhong
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Huanxin Zhang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Tongfei Qu
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Yongshun Jiang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Xuexi Tang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- *Correspondence: Xuexi Tang, Ying Wang,
| | - Ying Wang
- College of Marine Life Sciences, Ocean University of China, Qingdao, China
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- *Correspondence: Xuexi Tang, Ying Wang,
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