Proline is involved in water stress responses of Lotus corniculatus nitrogen fixing and nitrate fed plants
Proline is involved in water stress responses of Lotus corniculatus nitrogen fixing and nitrate fed plants
复制标题
DOI：
10.1016/s0176-1617(99)80018-2
复制
发表时间：
1999-08-01
影响因子：
4.3
通讯作者：
Monza, J
中科院分区：
文献类型：
--
作者：
Borsani, O;Díaz, P;Monza, J
水分胁迫诱导脯氨酸积累百脉根无论氮源提供给植物，虽然这种积累是较高的固氮植物。分析了与脯氨酸合成和氧化有关的酶。Fd-GOGAT活性和Fd-GOGAT蛋白含量在水分胁迫下增加，而PDH活性在水分胁迫下下降。然而，再水化6小时诱导的PDH活性的增加。水分亏缺对L.脯氨酸途径相关酶的差异影响。生长在不同氮素水平下的小角藻植物进行了讨论。也被认为是可能的作用，硝酸盐作为一种植物保护剂的地方脯氨酸。
Water stress induced proline accumulation in Lotus corniculatus regardless of the nitrogen source provided to plants, although this accumulation was higher in nitrogen fixing plants. Enzymes related to synthesis and oxidation of proline were analysed. Fd-GOGAT activity and Fd-GOGAT protein content increased in response to water stress in contrast to PDH activity, which decreased under such condition. However, rehydration for 6 h induced an increment in PDH activity. The differential effect of water deficit on enzymes involved in the proline pathway in L. corniculatus plants growing under different nitrogen regimes is discussed. The possible role of nitrate as an osmoprotectant in the place of proline is also considered.