---

作 者 ：杨景宏,陈拓,王勋陵

期 刊 ：生态学报 2000年 20卷 1期 页码：39~42

关键词：小麦；UV-B辐射；内源ABA；游离脯氨酸；

Keywords:wheat Triticum asetivum L., UV B radiation, endogenous ABA, free proline,

摘 要 ：研究温室种植的小麦在0(CK)、8.82KJ/m2(T1)和12.6KJ/m2(T2)3种剂量的UV-B辐射下其内源ABA和游离脯氨酸含量的变化。UV-В辐射导致叶绿体膜脂脂肪酸配比改变和IUFA降低、叶片MDA含量升高及ABA和游离脯氨酸积累。分析表明,UV-B辐射对膜系统的损坏也许是内源ABA和游离脯氨酸含量增加的原因之一,而后者也是植物抵抗UV-B胁迫所做出的适应性反应。

Abstract:The changes of endogenous ABA and free proline in wheat leaves exposed to 0(CK)、8 82KJ/m 2( T 1) and 12 6KJ/m 2( T 2 ) were studied. Enhanced UV B radiation led to changes of the composition of fatty acids as well as decrease of IUFA in chloroplast membrane, increase in MDA content and accumulation of ABA and proline. The analysis indicated that damage of UV B radiation to membrane system may be the reason accumulating endogenous ABA and free proline. The latter is the adaptive mechanism of pla...

---