Leaf Anatomy, Morphology and Photosynthesis of Three Tundra Shrubs after 7-Year Experimental Warming on Changbai Mountain
Tundra is one of the most sensitive biomes to climate warming. Understanding plant eco-physiological responses to warming is critical because these traits can give feedback on the effects of climate-warming on tundra ecosystem. We used open-top chambers following the criteria of the International Tu...
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| Format: | Article |
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MDPI AG
2019-08-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/8/8/271 |
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| author | Yumei Zhou Jifeng Deng Zhijuan Tai Lifen Jiang Jianqiu Han Gelei Meng Mai-He Li |
| author_facet | Yumei Zhou Jifeng Deng Zhijuan Tai Lifen Jiang Jianqiu Han Gelei Meng Mai-He Li |
| author_sort | Yumei Zhou |
| collection | DOAJ |
| description | Tundra is one of the most sensitive biomes to climate warming. Understanding plant eco-physiological responses to warming is critical because these traits can give feedback on the effects of climate-warming on tundra ecosystem. We used open-top chambers following the criteria of the International Tundra Experiment to passively warm air and soil temperatures year round in alpine tundra. Leaf size, photosynthesis and anatomy of three dominant species were investigated during the growing seasons after 7 years of continuous warming. Warming increased the maximal light-saturated photosynthetic rate (<i>P</i><sub>max</sub>) by 43.6% for <i>Dryas. octopetala</i> var. <i>asiatica</i> and by 26.7% for <i>Rhododendron confertissimum</i> across the whole growing season, while warming did not significantly affect the <i>P</i><sub>max</sub> of <i>V. uliginosum</i>. The leaf size of <i>Dr. octopetala</i> var. <i>asiatica</i> and <i>Rh. confertissimum</i> was increased by warming. No marked effects of warming on anatomical traits of <i>Dr. octopetala</i> var. <i>asiatica</i> were observed. Warming decreased the leaf thickness of <i>Rh. confertissimum</i> and <i>Vaccinium uliginosum</i>. This study highlights the species-specific responses to climate warming. Our results imply that <i>Dr. octopetala</i> var. <i>asiatica</i> could be more dominant because it, mainly in terms of leaf photosynthetic capacity and size, seems to have advantages over the other two species in a warming world. |
| first_indexed | 2024-12-24T03:22:32Z |
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| language | English |
| last_indexed | 2024-12-24T03:22:32Z |
| publishDate | 2019-08-01 |
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| series | Plants |
| spelling | doaj.art-20421fdf458f41cc896a66807026a0fe2022-12-21T17:17:26ZengMDPI AGPlants2223-77472019-08-018827110.3390/plants8080271plants8080271Leaf Anatomy, Morphology and Photosynthesis of Three Tundra Shrubs after 7-Year Experimental Warming on Changbai MountainYumei Zhou0Jifeng Deng1Zhijuan Tai2Lifen Jiang3Jianqiu Han4Gelei Meng5Mai-He Li6Ecological Technique and Engineering School, Shanghai Institute of Technology, Shanghai 201418, ChinaEcological Technique and Engineering School, Shanghai Institute of Technology, Shanghai 201418, ChinaDepartment of Tourism Economy, Changbai Mountain Academy of Sciences, Baihe 133633, ChinaCenter for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ 86011, USAEcological Technique and Engineering School, Shanghai Institute of Technology, Shanghai 201418, ChinaEcological Technique and Engineering School, Shanghai Institute of Technology, Shanghai 201418, ChinaSwiss Federal Research Institute WSL, Zuercherstrasse 111, 8903 Birmensdorf, SwitzerlandTundra is one of the most sensitive biomes to climate warming. Understanding plant eco-physiological responses to warming is critical because these traits can give feedback on the effects of climate-warming on tundra ecosystem. We used open-top chambers following the criteria of the International Tundra Experiment to passively warm air and soil temperatures year round in alpine tundra. Leaf size, photosynthesis and anatomy of three dominant species were investigated during the growing seasons after 7 years of continuous warming. Warming increased the maximal light-saturated photosynthetic rate (<i>P</i><sub>max</sub>) by 43.6% for <i>Dryas. octopetala</i> var. <i>asiatica</i> and by 26.7% for <i>Rhododendron confertissimum</i> across the whole growing season, while warming did not significantly affect the <i>P</i><sub>max</sub> of <i>V. uliginosum</i>. The leaf size of <i>Dr. octopetala</i> var. <i>asiatica</i> and <i>Rh. confertissimum</i> was increased by warming. No marked effects of warming on anatomical traits of <i>Dr. octopetala</i> var. <i>asiatica</i> were observed. Warming decreased the leaf thickness of <i>Rh. confertissimum</i> and <i>Vaccinium uliginosum</i>. This study highlights the species-specific responses to climate warming. Our results imply that <i>Dr. octopetala</i> var. <i>asiatica</i> could be more dominant because it, mainly in terms of leaf photosynthetic capacity and size, seems to have advantages over the other two species in a warming world.https://www.mdpi.com/2223-7747/8/8/271anatomical traitsgas exchangeleaf sizeopen-top chamberwarming |
| spellingShingle | Yumei Zhou Jifeng Deng Zhijuan Tai Lifen Jiang Jianqiu Han Gelei Meng Mai-He Li Leaf Anatomy, Morphology and Photosynthesis of Three Tundra Shrubs after 7-Year Experimental Warming on Changbai Mountain Plants anatomical traits gas exchange leaf size open-top chamber warming |
| title | Leaf Anatomy, Morphology and Photosynthesis of Three Tundra Shrubs after 7-Year Experimental Warming on Changbai Mountain |
| title_full | Leaf Anatomy, Morphology and Photosynthesis of Three Tundra Shrubs after 7-Year Experimental Warming on Changbai Mountain |
| title_fullStr | Leaf Anatomy, Morphology and Photosynthesis of Three Tundra Shrubs after 7-Year Experimental Warming on Changbai Mountain |
| title_full_unstemmed | Leaf Anatomy, Morphology and Photosynthesis of Three Tundra Shrubs after 7-Year Experimental Warming on Changbai Mountain |
| title_short | Leaf Anatomy, Morphology and Photosynthesis of Three Tundra Shrubs after 7-Year Experimental Warming on Changbai Mountain |
| title_sort | leaf anatomy morphology and photosynthesis of three tundra shrubs after 7 year experimental warming on changbai mountain |
| topic | anatomical traits gas exchange leaf size open-top chamber warming |
| url | https://www.mdpi.com/2223-7747/8/8/271 |
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