去除胚乳对玉米幼苗地上部和根部7种正常的对氢氧化钠不稳定的吲哚-3-乙酸共轭物的影响。
Effect of Endosperm Removal on 7 Normal NaOH-Labile Indole-3-acetic Acid Conjugates in Shoots and Roots of Zea mays Seedlings.
作者信息
Momonoki Y S, Bandurski R S
机构信息
Department of Botany and Plant Pathology, Michigan State University, East Lansing, Michigan 48824-1312.
出版信息
Plant Physiol. 1984 May;75(1):67-9. doi: 10.1104/pp.75.1.67.
Abstract
The pool of amide-linked indole-3-acetic acid (amide IAA) in the shoot of growing etiolated seedlings of Zea mays increases between the 3rd and 5th day of germination to equal the amount of free IAA and two-thirds the amount of ester IAA. Deseeding the germinant changes the pool size of free and amide IAA in a manner suggestive of conversion of endogenous free IAA to amide IAA. Deseeding also caused an almost total disappearance of amide IAA from the root, demonstrating that the pool of amide IAA is not inert and can be actively metabolized in young Z. mays seedlings.
摘要
在玉米黄化幼苗生长的芽中，酰胺连接的吲哚 - 3 - 乙酸（酰胺IAA）库在发芽的第3天到第5天之间增加，达到游离IAA的量，并为酯IAA量的三分之二。去除发芽种子的胚会改变游离和酰胺IAA的库大小，这表明内源性游离IAA转化为酰胺IAA。去除胚还导致根中酰胺IAA几乎完全消失，这表明酰胺IAA库并非无活性，并且可以在玉米幼苗中被积极代谢。
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