The Alleviation of Heat Damage to Photosystem II and Enzymatic Antioxidants by Exogenous Spermidine in Tall Fescue
文献类型：期刊论文
| 作者 | Zhang, Liang1,2; Hu, Tao1; Amombo, Erick1,2; Wang, Guangyang1,2; Xie, Yan1; Fu, Jinmin1,3 |
| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2017-10-12 |
| 卷号 | 8页码:13 |
| 关键词 | spermidine tall fescue heat stress antioxidant enzymes photosystem II gene expression |
| ISSN号 | 1664-462X |
| DOI | 10.3389/fpls.2017.01747 |
| 英文摘要 | Tall fescue (Festuca arundinacea Schreb) is a typical cool-season grass that is widely used in turf and pasture. However, high temperature as an abiotic stress seriously affects its utilization. The objective of this study was to explore the effect of spermidine (Spd) on heat stress response of tall fescue. The samples were exposed to 22 degrees C (normal condition) or 44 degrees C (heat stress) for 4 h. The results showed that exogenous Spd partially improved the quality of tall fescue leaves under normal temperature conditions. Nevertheless, after heat stress treatment, exogenous Spd significantly decreased the electrolyte leakage of tall fescue leaves. Spd also profoundly reduced the H2O2 and O-2(center dot-) content and increased antioxidant enzymes activities. In addition, PAs can also regulate antioxidant enzymes activities including SOD, POD, and APX which could help to scavenge ROS. Moreover, application of Spd could also remarkably increase the chlorophyll content and had a positive effect on the chlorophyll alpha fluorescence transients under high temperature. The Spd reagent enhanced the performance of photosystem II (PSII) as observed by the JIP-test. Under heat stress, the Spd profoundly improved the partial potentials at the steps of energy bifurcations (PIABS and PItotal) and the quantum yields and efficiencies (phi P0, delta R-0, phi R-0, and gamma RC). Exogenous Spd could also reduce the specific energy fluxes per Q(A)(-) reducing PSII reaction center (RC) (TP0/RC and ET0/RC). Additionally, exogenous Spd improved the expression level of psbA and psbB, which encoded the proteins of PSII core reaction center complex. We infer that PAs can stabilize the structure of nucleic acids and protect RNA from the degradation of ribonuclease. In brief, our study indicates that exogenous Spd enhances the heat tolerance of tall fescue by maintaining cell membrane stability, increasing antioxidant enzymes activities, improving PSII, and relevant gene expression. |
| 资助项目 | National Natural Science Foundation of China[31470363] ; National Natural Science Foundation of China[31772349] |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000412796200002 |
| 出版者 | FRONTIERS MEDIA SA |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/1298]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Xie, Yan; Fu, Jinmin |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan, Hubei, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China 3.Ludong Univ, Sch Resources & Environm Engn, Yantai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Liang,Hu, Tao,Amombo, Erick,et al. The Alleviation of Heat Damage to Photosystem II and Enzymatic Antioxidants by Exogenous Spermidine in Tall Fescue[J]. FRONTIERS IN PLANT SCIENCE,2017,8:13. |
| APA | Zhang, Liang,Hu, Tao,Amombo, Erick,Wang, Guangyang,Xie, Yan,&Fu, Jinmin.(2017).The Alleviation of Heat Damage to Photosystem II and Enzymatic Antioxidants by Exogenous Spermidine in Tall Fescue.FRONTIERS IN PLANT SCIENCE,8,13. |
| MLA | Zhang, Liang,et al."The Alleviation of Heat Damage to Photosystem II and Enzymatic Antioxidants by Exogenous Spermidine in Tall Fescue".FRONTIERS IN PLANT SCIENCE 8(2017):13. |
入库方式： OAI收割
来源：武汉植物园
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