Effect of high light and desiccation on photosystem II in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide
文献类型：期刊论文
| 作者 | Che, Xingkai2,3; Li, Hu2,3 ; Zhang, Litao1,2,3; Liu, Jianguo1,2,3
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| 刊名 | JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2022-08-30 |
| 页码 | 10 |
| ISSN号 | 2096-5508 |
| 关键词 | Enhalus acoroides high light desiccation photosystem II |
| DOI | 10.1007/s00343-021-1170-2 |
| 通讯作者 | Liu, Jianguo(jgliu@qdio.ac.cn) |
| 英文摘要 | During low tide, the intertidal seagrass Enhalus acoroides is often exposed to high light and desiccation, which can seriously threaten its survival, at least partly by inhibiting photosystem II (PSII) activity. The response of leaves of E. acoroides to high light and desiccation was compared for seedlings and mature plants. Results show that the resistance of seedling and mature leaves to high light was quite similar, but to desiccation was very different. Seedling leaves were more sensitive to desiccation than the mature plant leaves, but had better water retention. The damage of desiccation to seedling leaves was mainly caused by dehydration, whereas that to mature plant leaves was caused by hypersaline toxicity. The recovery rate of PSII of seedling leaves was significantly slower than that of the mature plants after the stresses disappeared, which may at least partly contribute to seedling mortality in the wild. In addition, compared to high light, desiccation seriously inhibited the recovery rate of PSII activities even if the leaves became fully rehydrated to their normal relative water content (RWC) in the following re-immersion. Desiccation inhibited the recovery rate of RC/CS M (reaction center per cross section (at t=t Fm)) to decrease the production of assimilatory power, which maybe the cause of the slower PSII recovery in desiccation treatments. This study demonstrates that desiccation particularly coupling with high light have a very negative effect on the PSII of E. acoroides during low tide and the sensitivity of seedlings and mature plants to desiccation is significantly different, which have important reference significance to choose an appropriate transplanting depth where seedlings and mature plants of E. acoroides not only receive sufficient light for growth, but also that minimize desiccation stress during low tide. |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Natural Science Foundation of China[32071577] ; International Partnership Program of Chinese Academy of Sciences[GJHZ2039] ; Shandong Provincial Natural Science Foundation[ZR201911130493] ; Taishan Industrial Experts Program[Tscy20200102] |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000847628700014 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/180921]  |
| 专题 | 海洋研究所_实验海洋生物学重点实验室 |
| 通讯作者 | Liu, Jianguo |
| 作者单位 | 1.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Biol & Biotechnol, Qingdao 266237, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Shandong Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Megasci, CAS, Qingdao 266071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Che, Xingkai,Li, Hu,Zhang, Litao,et al. Effect of high light and desiccation on photosystem II in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2022:10. |
| APA | Che, Xingkai,Li, Hu,Zhang, Litao,&Liu, Jianguo.(2022).Effect of high light and desiccation on photosystem II in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,10. |
| MLA | Che, Xingkai,et al."Effect of high light and desiccation on photosystem II in the seedlings and mature plants of tropical seagrass Enhalus acoroides during low tide".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2022):10. |
入库方式： OAI收割
来源：海洋研究所
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