Differential Acclimation of Enzymatic Antioxidant Metabolism and Photosystem II Photochemistry in Tall Fescue under Drought and Heat and the Combined Stresses
文献类型：期刊论文
| 作者 | Bi, Aoyue1,2; Fan, Jibiao1,2; Hu, Zhengrong1,2; Wang, Guangyang1,2; Amombo, Erick1,2; Fu, Jinmin1,3; Hu, Tao1,3 |
| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2016-04-14 |
| 卷号 | 7页码:12 |
| 关键词 | tall fescue drought stress heat stress antioxidant enzymes chlorophyll a fluorescence (OJIP) gene expression |
| ISSN号 | 1664-462X |
| DOI | 10.3389/fpls.2016.00453 |
| 英文摘要 | Quality inferiority in cool-season turfgrass due to drought, heat, and a combination of both stresses is predicted to be more prevalent in the future. Understanding the various response to heat and drought stress will assist in the selection and breeding of tolerant grass varieties. The objective of this study was to investigate the behavior of antioxidant metabolism and photosystem II (PSII) photochemistry in two tall fescue genotypes (PI 234881 and PI 578718) with various thermotolerance capacities. Wide variations were found between heat-tolerant PI 578718 and heat-sensitive PI 234881 for leaf relative water content, malondialdehyde and electrolyte leakage under drought, high-temperature or a combination of both stresses. The sensitivity of PI 234881 exposed to combined stresses was associated with lower superoxide dismutase activity and higher H2O2 accumulation than that in PI 578718. Various antioxidant enzymes displayed positive correlation with chlorophyll content, but negative with membrane injury index at most of the stages in both tall fescue genotypes. The JIP-test analysis in PI 578718 indicated a significant improvement in ABS/RC, TR0/RC, RE0/RC, RE0/ABS values as compared to the control regime, which indicated that PI 578718 had a high potential to protect the PSII system under drought and high temperature stress. And the PS II photochemistry in PI 234881 was damaged significantly compared with PI578718. Moreover, quantitative RT-PCR revealed that heat and drought stresses deduced the gene expression of psbB and psbC, but induced the expression of psbA. These findings to some extent confirmed that the various adaptations of physiological traits may contribute to breeding in cold-season turfgrass in response to drought, high-temperature, and a combination of both stresses. |
| 资助项目 | National Natural Science Foundation of China[31272194] ; National Natural Science Foundation of China[31201653] ; China-Africa Center for Research and Education, CAS[SAJC201325] |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000373971200001 |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/83]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Fu, Jinmin; Hu, Tao |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Bot Garden, Wuhan, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, China Africa Ctr, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bi, Aoyue,Fan, Jibiao,Hu, Zhengrong,et al. Differential Acclimation of Enzymatic Antioxidant Metabolism and Photosystem II Photochemistry in Tall Fescue under Drought and Heat and the Combined Stresses[J]. FRONTIERS IN PLANT SCIENCE,2016,7:12. |
| APA | Bi, Aoyue.,Fan, Jibiao.,Hu, Zhengrong.,Wang, Guangyang.,Amombo, Erick.,...&Hu, Tao.(2016).Differential Acclimation of Enzymatic Antioxidant Metabolism and Photosystem II Photochemistry in Tall Fescue under Drought and Heat and the Combined Stresses.FRONTIERS IN PLANT SCIENCE,7,12. |
| MLA | Bi, Aoyue,et al."Differential Acclimation of Enzymatic Antioxidant Metabolism and Photosystem II Photochemistry in Tall Fescue under Drought and Heat and the Combined Stresses".FRONTIERS IN PLANT SCIENCE 7(2016):12. |
入库方式： OAI收割
来源：武汉植物园
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