不对称施加生长素对向日葵下胚轴弯曲的影响。
Effect of asymmetric auxin application on Helianthus hypocotyl curvature.
作者信息
Migliaccio F, Rayle D L
机构信息
Department of Biology, Yale University, New Haven, Connecticut 06511.
出版信息
Plant Physiol. 1989;91(2):466-8. doi: 10.1104/pp.91.2.466.
Abstract
Indole-3-acetic acid was applied asymmetrically to the hypocotyls of sunflower (Helianthus annuus L.) seedlings. After 5 hours on a clinostat, auxin gradients as small as 1 to 1.3 produced substantial (more than 60 degrees) hypocotyl curvature. This result suggests the asymmetric growth underlying hypocotyl gravitropism can be explained by lateral auxin redistribution.
摘要
将吲哚 - 3 - 乙酸不对称地施加于向日葵（Helianthus annuus L.）幼苗的下胚轴上。在回转器上放置5小时后，低至1至1.3的生长素梯度会产生显著的（超过60度）下胚轴弯曲。这一结果表明，下胚轴向地性背后的不对称生长可以通过生长素的侧向重新分布来解释。
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