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首页> 外文期刊>Russian Journal of Plant Physiology >Accumulation of inorganic and organic osmolytes and their role in osmotic adjustment in NaCl-stressed vetiver grass seedlings
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Accumulation of inorganic and organic osmolytes and their role in osmotic adjustment in NaCl-stressed vetiver grass seedlings

机译：氯化钠胁迫香根草幼苗中无机和有机渗透物的积累及其在渗透调节中的作用

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摘要

The accumulation of inorganic and organic osmolytes and their role in osmotic adjustment were investigated in roots and leaves of vetiver grass (Vetiveria zizanioides) seedlings stressed with 100, 200, and 300 mM NaCl for 9 days. The results showed that, although the contents of inorganic (K, Na, Capo, Mgpo, Cl, NO , SO po and HPO )) and organic (soluble sugar, organic acids, and free amino acids) osmolytes all increased with NaCl concentration, the contribution of inorganic ions (mainly Na, K, and Cl) to osmotic adjustment was higher (71.50-80.56% of total) than that of organic solutes (19.43-28.50%). The contribution of inorganic ions increased and that of organic solutes decreased in roots with the enhanced NaCl concentration, whereas the case in leaves was opposite. On the other hand, the osmotic adjustment was only effective for vetiver grass seedlings under moderate saline stress (less than 200 mM NaCl).
机译：研究了分别受100、200和300 mM NaCl胁迫9天的香根草（Vetiveria zizanioides）幼苗的根和叶中无机和有机渗透物的积累及其在渗透调节中的作用。结果表明，尽管无机物（K，Na，Capo，Mgpo，Cl，NO，SO po和HPO）和有机物（可溶性糖，有机酸和游离氨基酸）的渗透物含量均随NaCl浓度的增加而增加，无机离子（主要是Na，K和Cl）对渗透调节的贡献（占总量的71.50-80.56％）高于有机溶质（占19.43-28.50％）。随着NaCl浓度的增加，根部无机离子的贡献增加而有机溶质的贡献减少，而叶片中的情况相反。另一方面，渗透调节仅对中度盐胁迫（低于200 mM NaCl）下的香根草幼苗有效。

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