Effects of Warming and N Deposition on the Physiological Performances of Leymus secalinus in Alpine Meadow of Qinghai-Tibetan Plateau
Warming and Nitrogen (N) deposition are key global changes that may affect eco-physiological process of territorial plants. In this paper, we examined the effects of warming, N deposition, and their combination effect on the physiological performances of Leymus secalinus. Four treatments were establ...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2020-02-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fpls.2019.01804/full |
| _version_ | 1818523310012497920 |
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| author | Hao Shen Shikui Dong Shuai Li Wenying Wang Jiannan Xiao Mingyue Yang Jing Zhang Xiaoxia Gao Yudan Xu Yangliu Zhi Shiliang Liu Quanming Dong Huakun Zhou Jane C. Yeomans |
| author_facet | Hao Shen Shikui Dong Shuai Li Wenying Wang Jiannan Xiao Mingyue Yang Jing Zhang Xiaoxia Gao Yudan Xu Yangliu Zhi Shiliang Liu Quanming Dong Huakun Zhou Jane C. Yeomans |
| author_sort | Hao Shen |
| collection | DOAJ |
| description | Warming and Nitrogen (N) deposition are key global changes that may affect eco-physiological process of territorial plants. In this paper, we examined the effects of warming, N deposition, and their combination effect on the physiological performances of Leymus secalinus. Four treatments were established in an alpine meadow of Qinghai-Tibetan plateau: control (CK), warming (W), N deposition (N), and warming plus N deposition (NW). Warming significantly decreased the photosynthetic rate (Anet), stomatal conductance (gs), intercellular CO2 concentration (Ci), and transpiration rate (Tr), while N deposition and warming plus N deposition significantly increased those parameters of L. secalinus. Warming significantly increased the VPD and Ls, while N deposition and warming plus N deposition had a significant positive effect. Warming negatively reduced the leaf N content, Chla, Chlb, and total Chl content, while N deposition significantly promoted these traits. Warming, N deposition, and their combination significantly increased the activity of SOD, POD, and CAT. Besides, warming and warming plus N deposition significantly increased the MDA content, while N deposition significantly decreased the MDA content. N deposition and warming plus N deposition significantly increased the Rubisco activity, while warming showed no significant effect on Rubisco activity. N deposition and warming plus N deposition significantly increased the Fv/Fm, ΦPSII, qP, and decreased NPQ, while warming significantly decreased the Fv/Fm, ΦPSII, qP, and increased NPQ. N deposition strengthened the relations between gs, Chl, Chla, Chlb, Rubisco activity, and Anet. Under warming, only gs showed a significantly positive relation with Anet. Our findings suggested that warming could impair the photosynthetic potential of L. secalinus enhanced by N deposition. Additionally, the combination of warming and N deposition still tend to lead positive effects on L. secalinus. |
| first_indexed | 2024-12-11T05:43:27Z |
| format | Article |
| id | doaj.art-982b814ef5e546c9bb087fd2625b4b3f |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-11T05:43:27Z |
| publishDate | 2020-02-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Plant Science |
| spelling | doaj.art-982b814ef5e546c9bb087fd2625b4b3f2022-12-22T01:19:04ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2020-02-011010.3389/fpls.2019.01804493395Effects of Warming and N Deposition on the Physiological Performances of Leymus secalinus in Alpine Meadow of Qinghai-Tibetan PlateauHao Shen0Shikui Dong1Shuai Li2Wenying Wang3Jiannan Xiao4Mingyue Yang5Jing Zhang6Xiaoxia Gao7Yudan Xu8Yangliu Zhi9Shiliang Liu10Quanming Dong11Huakun Zhou12Jane C. Yeomans13School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaSchool of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaSchool of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaSchool of Life and Geographic Sciences, Qinghai Normal University, Xining, ChinaSchool of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaSchool of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaSchool of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaSchool of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaSchool of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaSchool of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaSchool of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, ChinaQinghai Academy of Animal Husbandry and Veterinary Science, Qinghai University, Xining, ChinaNorthwest Institute of Plateau Biology, Key Laboratory of Restoration Ecology of Cold Are in Qinghai Province, Chinese Academy of Science, Xining, ChinaResearch Department, Earth University, San José, Costa RicaWarming and Nitrogen (N) deposition are key global changes that may affect eco-physiological process of territorial plants. In this paper, we examined the effects of warming, N deposition, and their combination effect on the physiological performances of Leymus secalinus. Four treatments were established in an alpine meadow of Qinghai-Tibetan plateau: control (CK), warming (W), N deposition (N), and warming plus N deposition (NW). Warming significantly decreased the photosynthetic rate (Anet), stomatal conductance (gs), intercellular CO2 concentration (Ci), and transpiration rate (Tr), while N deposition and warming plus N deposition significantly increased those parameters of L. secalinus. Warming significantly increased the VPD and Ls, while N deposition and warming plus N deposition had a significant positive effect. Warming negatively reduced the leaf N content, Chla, Chlb, and total Chl content, while N deposition significantly promoted these traits. Warming, N deposition, and their combination significantly increased the activity of SOD, POD, and CAT. Besides, warming and warming plus N deposition significantly increased the MDA content, while N deposition significantly decreased the MDA content. N deposition and warming plus N deposition significantly increased the Rubisco activity, while warming showed no significant effect on Rubisco activity. N deposition and warming plus N deposition significantly increased the Fv/Fm, ΦPSII, qP, and decreased NPQ, while warming significantly decreased the Fv/Fm, ΦPSII, qP, and increased NPQ. N deposition strengthened the relations between gs, Chl, Chla, Chlb, Rubisco activity, and Anet. Under warming, only gs showed a significantly positive relation with Anet. Our findings suggested that warming could impair the photosynthetic potential of L. secalinus enhanced by N deposition. Additionally, the combination of warming and N deposition still tend to lead positive effects on L. secalinus.https://www.frontiersin.org/article/10.3389/fpls.2019.01804/fullQinghai-Tibetan plateaustomatal conductanceantioxidant enzymesphotosynthesisLeymus secalinus |
| spellingShingle | Hao Shen Shikui Dong Shuai Li Wenying Wang Jiannan Xiao Mingyue Yang Jing Zhang Xiaoxia Gao Yudan Xu Yangliu Zhi Shiliang Liu Quanming Dong Huakun Zhou Jane C. Yeomans Effects of Warming and N Deposition on the Physiological Performances of Leymus secalinus in Alpine Meadow of Qinghai-Tibetan Plateau Frontiers in Plant Science Qinghai-Tibetan plateau stomatal conductance antioxidant enzymes photosynthesis Leymus secalinus |
| title | Effects of Warming and N Deposition on the Physiological Performances of Leymus secalinus in Alpine Meadow of Qinghai-Tibetan Plateau |
| title_full | Effects of Warming and N Deposition on the Physiological Performances of Leymus secalinus in Alpine Meadow of Qinghai-Tibetan Plateau |
| title_fullStr | Effects of Warming and N Deposition on the Physiological Performances of Leymus secalinus in Alpine Meadow of Qinghai-Tibetan Plateau |
| title_full_unstemmed | Effects of Warming and N Deposition on the Physiological Performances of Leymus secalinus in Alpine Meadow of Qinghai-Tibetan Plateau |
| title_short | Effects of Warming and N Deposition on the Physiological Performances of Leymus secalinus in Alpine Meadow of Qinghai-Tibetan Plateau |
| title_sort | effects of warming and n deposition on the physiological performances of leymus secalinus in alpine meadow of qinghai tibetan plateau |
| topic | Qinghai-Tibetan plateau stomatal conductance antioxidant enzymes photosynthesis Leymus secalinus |
| url | https://www.frontiersin.org/article/10.3389/fpls.2019.01804/full |
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