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对缺氧具有高抗性和低抗性的植物在厌氧乳酸 - 琥珀酸产生及细胞液pH变化方面的差异。

Differences in the Anaerobic Lactate-Succinate Production and in the Changes of Cell Sap pH for Plants with High and Low Resistance to Anoxia.

作者信息

Menegus F, Cattaruzza L, Chersi A, Fronza G

机构信息

Istituto Biosintesi Vegetali-CNR- Via Bassini 15, 20133 Milano, Italy.

出版信息

Plant Physiol. 1989 May;90(1):29-32. doi: 10.1104/pp.90.1.29.

Abstract

Anaerobically treated seedlings of Oryza sativa L. var arborio accumulated in their shoots more succinate than lactate and cell sap became alkaline. Conversely, in Triticum aestivum L. var MEK 86 lactate accumulation was far higher than that of succinate and cell sap was acidified. Anoxia clearly induced proton consumption in both species as an important means to prevent or counteract acidosis. Other species studied were: Echinochloa crus-galli L. Beauv., Zea mays L. var De Kalb XL75, Secale cereale L. var primizia and Hordeum vulgare L. var rondo. Changes in cell sap pH and succinate to lactate ratios distinguished resistant from nonresistant species.

摘要

经厌氧处理的粳稻幼苗,其地上部分积累的琥珀酸比乳酸更多,且细胞液变为碱性。相反,在普通小麦品种MEK 86中,乳酸积累量远高于琥珀酸,细胞液被酸化。缺氧明显诱导了这两个物种的质子消耗,作为预防或对抗酸中毒的重要手段。研究的其他物种有:稗草、玉米品种迪卡XL75、黑麦品种primizia和大麦品种rondo。细胞液pH值的变化以及琥珀酸与乳酸的比例区分了抗性物种和非抗性物种。

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