生长调节剂对叶片 CO2 同化的影响及其与光合作用芽突破响应的关系。
Effect of Growth Regulators on CO(2) Assimilation in Leaves, and its Correlation with the Bud Break Response in Photosynthesis.
机构信息
Botany Department, University of Toronto, Toronto 5, Canada.
出版信息
Plant Physiol. 1966 Feb;41(2):267-70. doi: 10.1104/pp.41.2.267.
Experiments have been done to confirm the previously reported effect of indoleacetic acid (IAA) on the rate of CO(2) assimilation in bean leaves. It was shown that spraying the leaves of a variety of plants caused an increase in the rate of CO(2) assimilation from 30% to 100% during the half-hour to 1 hour period following spraying. The only plant tested which did not show such an effect was corn.The breaking of dormancy of axial buds in the bean plant was correlated with an increase in the rate of CO(2) assimilation in adjacent leaves for a brief period of time. It has been shown that IAA solution sprayed on 1 leaflet of a leaf can cause an increase in the rate of CO(2) assimilation in the other leaflets, and that IAA applied to the cut stem of a leaflet or a developing bud can be transported to adjacent leaves and cause an increase in the CO(2) assimilation rate. The reaction caused by IAA is very similar to that caused by the breaking of dormancy of a bud. This indicates that the bud break response in CO(2) assimilation in leaves is caused by auxin synthesized in a bud as it begins to grow, and exported into adjacent leaves.
已经进行了实验来证实先前报道的吲哚乙酸（IAA）对豆叶 CO2 同化速率的影响。结果表明，喷洒各种植物的叶片会导致在喷洒后半小时至 1 小时内 CO2 同化速率增加 30%至 100%。唯一经过测试但未显示出这种效果的植物是玉米。豆科植物的轴向芽休眠的打破与相邻叶片 CO2 同化速率在短时间内的增加有关。已经表明，喷在一片叶子的 1 个小叶上的 IAA 溶液可以引起其他小叶的 CO2 同化速率增加，并且施加在小叶的切口茎或发育芽上的 IAA 可以被运输到相邻的叶子并引起 CO2 同化速率的增加。IAA 引起的反应与芽休眠的打破非常相似。这表明，叶片中 CO2 同化的芽休眠反应是由开始生长的芽中合成的生长素引起的，并输出到相邻的叶子中。
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