ACCUMULATION OF LOW-MOLECULAR WEIGHT SOLUTES IN WATER-STRESSED TROPICAL LEGUMES
ACCUMULATION OF LOW-MOLECULAR WEIGHT SOLUTES IN WATER-STRESSED TROPICAL LEGUMES
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DOI：
10.1016/s0031-9422(00)82601-1
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发表时间：
1984-01-01
期刊：
影响因子：
3.8
通讯作者：
FORD, CW
中科院分区：
文献类型：
--
作者：
FORD, CW
其中包括鹰嘴豆、木豆、扁豆、绿豆、长爪豆、大豆、柱花草、豆豆荚、豆荚等14种。scabra、毛花盘藓（Pesteaerianantha）、小喙藓（Rhyncosiaminima）、黑紫大萼藓（Macroptiliumatropurpureum）、大萼藓（G.对热带豆科植物10个属的10个种（即毛顶孢属、分析了应激和未应激植物的最年轻的完全展开的叶的无机离子、糖、肌醇、有机酸、甜菜碱和氨基酸。随着水分胁迫积累的主要化合物是O-甲基肌醇（14种），2-甲基-2，3，4-三羟基丁酸-1，4-内酯（10种）和脯氨酸（9种）。无机离子，糖和有机酸的浓度下降或在大多数的压力物种不变。甜菜碱，甘氨酸甜菜碱，胡芦巴碱和水苏碱在大多数豆类中检测到低浓度，但没有积累到任何程度在水分胁迫。所有耐受低叶水势的豆科植物都积累了0-甲基肌醇、松醇。其他物种，除了Siratro，含有onononitrol或O-甲基-scylloinositol，但没有松醇。松醇积累可能表明豆科植物能够耐受低叶水势。
Fourteen species [Cicer arietinum, Cajanus cajan, Lablab purpureus, Vigna radiata, V. mungo, V. unguiculata, Glycine max, Stylosanthes hamata, S. scabra, Psoralea eriantha, Rhyncosia minima, Macroptilium atropurpureum, G. tomentella, Centrosema pubescens] of tropical legumens, representing 10 genera, were subjected to water stress. Youngest fully expanded leaves of stressed and unstressed plants were analyzed for inorganic ions, sugars, inositols, organic acids, betaines and amino acids. The major compounds which accumulated with water stress were O-methyl-inositols (14 spp.), 2-methyl-2,3,4-trihydroxybutanoic acid-1,4-lactone (10 spp.) and proline (9 spp.). Concentrations of inorganic ions, sugars and organic acids decreased or were unchanged in the majority of the stressed species. The betaines, glycinebetaine, trigonelline and stachydrine were detected in low concentrations in most of the legumes but did not accumulate to any degree during water stress. All the legumes which tolerated low leaf water potentials accumulated the 0-methyl-inositol, pinitol. The other species, with the exception of Siratro, contained ononitrol or O-methyl-scylloinositol but no pinitol. Pinitol accumulation may indicate a legume able to tolerate low leaf water potentials.