Tobacco mosaic virus-induced increase in abscisic acid concentration in tobacco leaves: intracellular location and relationship to symptom severity and to extent of virus multiplication

Physiological Plant Pathology Pub Date : 1985-05-01 DOI:10.1016/0048-4059(85)90012-8

R.J. Whenham, R.S.S. Fraser, Alison Snow

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引用次数: 27

Abstract

Abscisic acid (ABA) concentration was increased 1·1 to five-fold in Samsun tobacco infected with six strains of tobacco mosaic virus (TMV) which produced mosaic symptoms of widely different severity and which multiplied to different extents. The ABA accumulation was more closely related to the severity of mosaic symptoms (r = 0·93; 4 degrees of fredom, df) than to the extent of virus multiplication (r = 0·39, 4 df). The increase in ABA concentration was located outside the chloroplast; virus infection had little effect on, or reduced, chloroplastic ABA concentration.

Tobacco mosaic virus infection inhibited plant growth. Reduction in growth rate was related both to increase in extrachloroplastic ABA concentration (r = 0·69, 4 df) and to virus accumulation (r = 0·73, 4 df). It is concluded that both these factors are important in the inhibition of growth produced by TMV infection.

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烟草花叶病毒诱导的烟草叶片脱落酸浓度升高:细胞内定位及其与症状严重程度和病毒增殖程度的关系

6株烟草花叶病毒(TMV)侵染三山烟草后，脱落酸(ABA)浓度增加了1·1 ~ 5倍，产生的花叶症状的严重程度和增殖程度差别很大。ABA积累与花叶病的严重程度关系更密切(r = 0.93;4个自由度，df)比病毒增殖的程度(r = 0.39,4 df)大。ABA浓度的增加发生在叶绿体外;病毒感染对叶绿体ABA浓度影响不大或降低。烟草花叶病毒感染抑制植株生长。生长速率的降低与叶绿体外ABA浓度的增加(r = 0.69, 4 df)和病毒积累(r = 0.73, 4 df)有关。由此可见，这两个因素在抑制TMV感染引起的生长中起重要作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Physiological Plant Pathology

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