CHANGES IN ENDOGENOUS GROWTH REGULATORS IN NASTURTIUM LEAVES DURING SENESCENCE
CHANGES IN ENDOGENOUS GROWTH REGULATORS IN NASTURTIUM LEAVES DURING SENESCENCE
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DOI：
10.1007/bf00385210
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发表时间：
1970-01-01
期刊：
影响因子：
4.3
通讯作者：
BEEVERS, L
中科院分区：
文献类型：
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作者：
CHIN, TY;BEEVERS, L
利用生菜-下胚轴和小麦-胚轴的生物测定，证实了旱金莲（Tropaeolum majus）叶片的酸性乙酸乙酯提取物中存在赤霉素（GA）样成分和脱落酸（ABA）样成分。在离体叶片衰老过程中，ga样成分逐渐减少，aba样成分逐渐增加。用ga3或动素预处理离体叶片可以阻止内源生长调节剂水平的变化，延缓衰老。这些观察结果为衰老与内源性生长调节剂变化有关的概念提供了实验验证。
By use of lettuce-hypocotyl and wheat-coleoptile bioassay, the presence of both gibberellin (GA)-like and abscisic-acid(ABA)-like components in acidic ethyl-acetate extracts of fully expanded nasturtium (Tropaeolum majus) leaves has been shown. During senescence of detached leaves there was a progressive decline in GA-like components and an increase in ABA-like components. Pretreatment of detached leaves with GA3or kinetin prevented changes in the levels of endogenous growth regulators and delayed senescence. The observations provide experimental verification for the concept that senescence is associated with changes in endogenous growth regulators.