Monitoring Stress Sensitivity by Water Proton NMR Relaxation Times in Leaves of Azaleas That Originated in Different Ecological Habitats
Monitoring Stress Sensitivity by Water Proton NMR Relaxation Times in Leaves of Azaleas That Originated in Different Ecological Habitats
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通过水质子核磁共振弛豫时间监测不同生态栖息地杜鹃花叶子的应激敏感性
DOI：
10.1093/oxfordjournals.pcp.a078452
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
S. Kaku
中科院分区：
文献类型：
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作者：
S. Kaku
以水质子核磁共振弛豫时间(T1)、过冷度和含水率为指标，测定了杜鹃属5种植物的叶片对低温、脱水、高温和盐雾等环境胁迫的响应。三个亚热带种(R.scabumcv.Shounoshin、毛果核桃R.Tashiroivar.lasiophyllum)和两个北方种(R.incumcv.熊野-萨苏基。Yedoensef.poukhanense)，它们在T1松弛时间方面表现出明显的行为特征。总体而言，T1变化较大的物种比表现出相反趋势的物种对压力更敏感。每个物种对各种胁迫的相对敏感性似乎与其自然栖息地条件的严酷程度有关。这似乎是可能的，那些对特定单一胁迫较敏感的杜鹃花物种也可能对几种甚至大多数胁迫表现出更高的敏感性，反之亦然。
Responses of the leaves of five species of azalea to environmental stresses, such as freezing, dehydration, high temperature and salt spray, were measured in terms of water proton NMR relaxation times (T1), supercooling ability, and water content. Three subtropical species (R. scabrumcv. Shounoshin,R. eriocarpumandR. tashiroivar.lasiophyllum) and two northern species (R. indicumcv. Kumano-satsuki andR. yedoensef.poukhanense), which originated in different ecological habitats, showed characteristic behaviors in terms of T1relaxation times. In general, a species with a large change in T1is more stress-sensitive than a species showing the opposite tendency. The relative sensitivity to various stresses of each species appears to be related to the severity of conditions in its natural habitat. It seems possible that those species of azalea with higher sensitivity to a particular single stress may also exhibit higher sensitivity to several or even most stresses, and vice versa.