kalanche物种昼夜节律的自然变化

IF 2 4区 生物学 Q2 PLANT SCIENCES
Haseltonia Pub Date : 2016-12-01 DOI:10.2985/026.022.0107
Kathryn Rebecca Malpas, M. Jones
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引用次数: 3

摘要

摘要:植物已经进化出了一个内部生物钟——昼夜节律系统,它可以通过预测正常的环境变化来优化白天的行为。这种定时机制也可以作为控制开花时间的内部参考。昼夜节律系统的一个可观察到的结果是光合作用过程的节律调节,这种调节在植物转移到恒定条件后仍然存在。许多仙人掌和多肉植物使用天冬酸代谢(CAM)作为主要的C3光合作用方法的一种修改来限制水分的流失。CAM允许从大气和卡尔文-本森循环中暂时分离碳捕获,因此将气孔打开从光合作用的一些生化方面分离出来。在这里,我们记录了几种kalanche物种的昼夜节律多样性,并揭示了光合机构调节产生的昼夜节律输出的周期、相位和幅度的差异。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Natural Variation of Circadian Rhythms in Kalanchoe Species
Abstract: Plants have evolved an internal body clock — the circadian system — that allows the optimization of behavior during the day by anticipating regular environmental change. This timing mechanism also serves as an internal reference to control flowering time. One observable consequence of the circadian system is the rhythmic regulation of processes that underlie photosynthesis, which persists after plants are transferred to constant conditions. Many cacti and succulents use Crassulacean Acid Metabolism (CAM) as a modification of the predominant C3 method of photosynthesis to limit water loss. CAM allows the temporal separation of carbon capture from the atmosphere and the Calvin-Benson cycle, and so separates stomatal opening from some of the biochemical aspects of photosynthesis. Here we document the diversity of circadian rhythms in several Kalanchoe species and reveal differences in the period, phase and amplitude of circadian outputs derived from regulation of the photosynthetic apparatus.
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来源期刊
Haseltonia
Haseltonia 生物-植物科学
CiteScore
3.00
自引率
6.70%
发文量
11
审稿时长
>12 weeks
期刊介绍: Haseltonia, Yearbook of the Cactus and Succulent Society of America, is published in full color and features peer-reviewed articles about all aspects of cacti, succulents and their environs. Topics include current research and conservation reports, new species descriptions and lengthy taxonomic revisions, historical and biographical notes, chemical and cytological studies, evolutionary biology and ethnobotanical reports, propagation and pest control methods, and pollinator studies. Serious students of the world''s succulent flora, botanists, taxonomists, researchers and horticulturalists will all find Haseltonia a valuable addition to their book collection.
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