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为了研究盐渍生境对盐生植物碱茅Puccinellia china mpoensis体内部分信号分子的影响,采用不同浓度NaCl溶液处理碱茅植株,对幼苗叶片中部分信号分子及相关蛋白测定和分析。结果发现,低盐下碱茅无胁迫反应,高盐胁迫下,碱茅脱落酸(ABA)含量升高,生长素(IAA)、赤霉素(GA)含量均下降,细胞分裂素(ZR)含量趋于稳定;碱茅NAD激酶(NADKase)活性升高,提高代谢调节能力;同时Ca2+-ATPase活性增加,是对盐胁迫引起Ca2+浓度升高而做出的胁迫反应。表明了碱茅通过胞间信号相对含量的变化,调节NADKase活性、Ca2+-ATPase活性,提高耐盐能力。
In order to study the effect of saline habitats on some signaling molecules in the halophyte Puccinellia china mpoensis, different concentrations of NaCl solution were used to treat the plants and the signal molecules and related proteins in seedling leaves were measured and analyzed. The results showed that the alkali abscisic acid (ABA) content increased, while the IAA and GA contents decreased under salt stress. The cytokinin (ZR) The content of Ca2 + -ATPase tended to be stable. The activity of NADKase was increased and the metabolic regulation ability was increased. Meanwhile, the activity of Ca2 + -ATPase was increased, which was the stress response to the Ca2 + concentration increase caused by salt stress. The results showed that Alhumna sativa could regulate the activity of NADKase, Ca2 + -ATPase and improve the salt tolerance through the change of the relative content of intercellular signals.