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| Comparative Physiological and Proteomic Analyses of Poplar (Populus yunnanensis) Plantlets Exposed to High Temperature and Drought | |
Li, Xiong1,2,3 ; Yang, Yunqiang1,2,3; Sun, Xudong1,2; Lin, Huaming1,2,3; Chen, Jinhui4; Ren, Jian5; Hu, Xiangyang1,2; Yang, Yongping1,2
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| 2014-09-16 | |
| Source Publication | PLOS ONE
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| Volume | 9Issue:9 |
| Abstract | Plantlets of Populus yunnanensis Dode were examined in a greenhouse for 48 h to analyze their physiological and proteomic responses to sustained heat, drought, and combined heat and drought. Compared with the application of a single stress, simultaneous treatment with both stresses damaged the plantlets more heavily. The plantlets experienced two apparent response stages under sustained heat and drought. During the first stage, malondialdehyde and reactive oxygen species (ROS) contents were induced by heat, but many protective substances, including antioxidant enzymes, proline, abscisic acid (ABA), dehydrin, and small heat shock proteins (sHSPs), were also stimulated. The plants thus actively defended themselves against stress and exhibited few pathological morphological features, most likely because a new cellular homeostasis was established through the collaborative operation of physiological and proteomic responses. During the second stage, ROS homeostasis was overwhelmed by substantial ROS production and a sharp decline in antioxidant enzyme activities, while the synthesis of some protective elements, such as proline and ABA, was suppressed. As a result, photosynthetic levels in P. yunnanensis decreased sharply and buds began to die, despite continued accumulation of sHSPs and dehydrin. This study supplies important information about the effects of extreme abiotic environments on woody plants. |
| Subject Area | Plant Science |
| DOI | 10.1371/journal.pone.0107605 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000344317700065 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.kib.ac.cn/handle/151853/18249 |
| Collection | 中国科学院青藏高原研究所昆明部 |
| Affiliation | 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Biodivers & Biogeog East Asia, Kunming, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Plant Germplasm & Genom Ctr, Kunming, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Nanjing Forestry Univ, Key Lab Forest Genet & Biotechnol, Nanjing, Jiangsu, Peoples R China 5.Yunnan Agr Univ, Dept Grassland Sci, Kunming, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Xiong,Yang, Yunqiang,Sun, Xudong,et al. Comparative Physiological and Proteomic Analyses of Poplar (Populus yunnanensis) Plantlets Exposed to High Temperature and Drought[J]. PLOS ONE,2014,9(9). |
| APA | Li, Xiong.,Yang, Yunqiang.,Sun, Xudong.,Lin, Huaming.,Chen, Jinhui.,...&Yang, Yongping.(2014).Comparative Physiological and Proteomic Analyses of Poplar (Populus yunnanensis) Plantlets Exposed to High Temperature and Drought.PLOS ONE,9(9). |
| MLA | Li, Xiong,et al."Comparative Physiological and Proteomic Analyses of Poplar (Populus yunnanensis) Plantlets Exposed to High Temperature and Drought".PLOS ONE 9.9(2014). |
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| File Name/Size | DocType | Version | Access | License | ||
| 2014-PLOS ONE-Compar（1462KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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