biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 43:301-304, 2000 | DOI: 10.1023/A:1002781016598

The Relation between Accumulation of Abscisic Acid and Proline in Detached Rice Leaves

C.-W. Yang1, J.W. Wang1, C.H. Kao1
1 Department of Agronomy, National Taiwan University, Taipei, Taiwan, Republic of China

The relation between abscisic acid (ABA) and proline accumulation was investigated in detached rice (Oryza sativa 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.

Keywords: Oryza sativa; water stress
Subjects: abscisic acid, proline, detached leaves; Oryza sativa; proline, abscisic acid, detached leaves; rice, abscisic acid, proline; water stress, abscisic acid, proline

Published: August 1, 2000  Show citation

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Yang, C.-W., Wang, J.W., & Kao, C.H. (2000). The Relation between Accumulation of Abscisic Acid and Proline in Detached Rice Leaves. Biologia plantarum, 43(2), 301-304. doi: 10.1023/A:1002781016598
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