Organ-dependent responses of Periploca sepium to repeated dehydration and rehydration
文献类型：期刊论文
| 作者 | An Y. -Y. ; Liang Z. -S. ; Zhao R. -K |
| 刊名 | SOUTH AFRICAN JOURNAL OF BOTANY
 |
| 出版日期 | 2011 |
| 卷号 | 77期号:2页码:446-454 |
| 关键词 | Drought stress Lipid peroxidation Organ specific response Re-watering Solute accumulation |
| 通讯作者 | Liang, ZS |
| 英文摘要 | Plant responses to water deficit occur in a complex framework of organ interactions, but few studies focus on the effect of drought stress on all organs in a whole-plant. The effects of repeated dehydration and rehydration (DH) on physiological and biochemical responses in various organs of Periploca sepium Bunge (P. sepium) were investigated. The leaf relative water content decreased significantly during drought, but recovered and showed an increase when compared to well-watered control plants. The malondialdehyde (MDA) content increased in mature and old leaves, but decreased in young leaves, new stems and fine roots during drought, indicating that the young and vigorous tissues of a whole-plant are protected preferentially from the oxidative stress. Among all organs, the fine roots showed the highest levels of proline, total free amino acids (TFAA) and Na(+), while the leaves showed the highest levels of total soluble sugars (TSS), soluble proteins (SP), Ca(2+) and Mg(2+). The response to DH differed in different organs, both in magnitude and in the type of solutes involved. Drought stress increased the contents of proline, TFAA, TSS, SP and K(+) in all organs of P. sepium plants, while the accumulation amounts were obviously different among the organs. The storage starch in stems and roots plays an important role in providing carbohydrates for growth. Changes in Na(+), Ca(2+) and Mg(2+) under DH presented a high degree of organ specificity. Our data indicates that response strategies are different between different organs; therefore, evidence the needs to integrate all the information in order to better understand plant tolerance mechanisms. (C) 2010 SAAB. Published by Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2012-05-31 |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/4705]  |
| 专题 | 水土保持研究所_水保所知识产出(1956-2013) |
| 推荐引用方式 GB/T 7714 | An Y. -Y.,Liang Z. -S.,Zhao R. -K. Organ-dependent responses of Periploca sepium to repeated dehydration and rehydration[J]. SOUTH AFRICAN JOURNAL OF BOTANY,2011,77(2):446-454. |
| APA | An Y. -Y.,Liang Z. -S.,&Zhao R. -K.(2011).Organ-dependent responses of Periploca sepium to repeated dehydration and rehydration.SOUTH AFRICAN JOURNAL OF BOTANY,77(2),446-454. |
| MLA | An Y. -Y.,et al."Organ-dependent responses of Periploca sepium to repeated dehydration and rehydration".SOUTH AFRICAN JOURNAL OF BOTANY 77.2(2011):446-454. |
入库方式： OAI收割
来源：水土保持研究所
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