Proline metabolism in response to salt stress in common reed [phragmites australis (cav.) trin. ex steud]
文献类型：期刊论文
| 作者 | Zhen, Wei-Bo1,2; Ma, Qing-Hu1 |
| 刊名 | Botanica marina
 |
| 出版日期 | 2009-08-01 |
| 卷号 | 52期号:4页码:341-347 |
| 关键词 | Halophyte Phragmites australis Proline metabolism Salt stress |
| ISSN号 | 0006-8055 |
| DOI | 10.1515/bot.2009.007 |
| 通讯作者 | Ma, qing-hu(mqh@ibcas.ac.cn) |
| 英文摘要 | We studied effects of salt stress on proline accumulation and the activities of proline metabolic enzymes in reed, a salt-tolerant, cosmopolitan, aquatic grass. a concentration-dependent inhibition of plant growth occurred in the presence of nacl, which was accompanied by high amounts of proline accumulation. reed tolerance of salt stress reaches a limit at approximately 200 mm nacl. free proline content and pyrroline-5-carboxylate synthetase (p5cs) activity both increased with salt stress treatment, while ornithine aminotransferase (oat) activity appeared to be unaffected, suggesting that the glutamate pathway, rather than the ornithine pathway, plays a vital role in proline accumulation during osmotic regulation. the activity of the proline degrading enzyme, proline dehydrogenase (pdh), decreased under salt stress, indicating that proline catabolism may also be responsible for proline accumulation in response to salt stress. furthermore, high salinity >= 250 mm nacl, which stops growth of reed, decreases proline accumulation and p5cs, oat, and pdh activities. this suggests that changes in enzyme activities of proline metabolism coupled with increased proline accumulation are involved in osmotic regulation of reed plants only when they are grown at salinities <= 200 mm nacl. |
| WOS关键词 | DELTA-AMINOTRANSFERASE CDNA ; DELTA(1)-PYRROLINE-5-CARBOXYLATE SYNTHETASE ; ARABIDOPSIS-THALIANA ; FEEDBACK INHIBITION ; PLANTS ; ACCUMULATION ; DEHYDROGENASE ; TOLERANCE ; HALOPHYTE ; BIOSYNTHESIS |
| WOS研究方向 | Plant Sciences ; Marine & Freshwater Biology |
| WOS类目 | Plant Sciences ; Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000268751800006 |
| 出版者 | WALTER DE GRUYTER GMBH |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2399483 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Ma, Qing-Hu |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Photosynth & Environm Mol Physiol, Inst Bot, Beijing 100093, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhen, Wei-Bo,Ma, Qing-Hu. Proline metabolism in response to salt stress in common reed [phragmites australis (cav.) trin. ex steud][J]. Botanica marina,2009,52(4):341-347. |
| APA | Zhen, Wei-Bo,&Ma, Qing-Hu.(2009).Proline metabolism in response to salt stress in common reed [phragmites australis (cav.) trin. ex steud].Botanica marina,52(4),341-347. |
| MLA | Zhen, Wei-Bo,et al."Proline metabolism in response to salt stress in common reed [phragmites australis (cav.) trin. ex steud]".Botanica marina 52.4(2009):341-347. |
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来源：中国科学院大学
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