期刊
BIOLOGIA PLANTARUM
卷 43, 期 2, 页码 301-304出版社
ACAD SCI CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
DOI: 10.1023/A:1002781016598
关键词
Oryza sativa; water stress
The relation between abscisic acid (ABA) and proline accumulation was investigated in detached rice (Oryza saliva L.) leaves. In darkness, proline content increased about 2-, 2.5- and 6-fold after 24, 48 and 72 h. ABA content reached maximum after 48 h. In the light, proline content remained almost unchanged until 48 h and subsequently increased slightly. ABA content in the light was lower than in darkness, but the maximum was also after 48 h. During 12-h exposure to decreased air humidity, proline content gradually increased, but ABA content increased about 25-fold after 4 h and declined thereafter. Exogenous application of ABA resulted in an increase in proline content in detached rice leaves under both light and darkness.
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