Sex change in the subdioecious shrub Eurya japonica (Pentaphylacaceae).
Sex change in the subdioecious shrub Eurya japonica (Pentaphylacaceae).
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亚雌雄异株灌木 Eurya japonica（Pentaphylacaceae）的性别变化。
DOI：
10.1002/ece3.2745
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发表时间：
2017-04
影响因子：
2.6
通讯作者：
Nakagawa M
中科院分区：
文献类型：
--
作者：
Wang H;Matsushita M;Tomaru N;Nakagawa M
性别变化影响植物种群的性别比例，并可能在有性系统的进化转变中发挥重要作用。性别变化可以是一种策略，以增加健身在一个植物的生命周期，植物的大小，环境因素和生长速度可能会影响性别变化。我们描述了频繁的，重复的性别变化，以下各种模式在一个subdioecosious的日本种群连续五年。在这些个体中，27.5%的人至少改变了一次性别，这些改变是单向或双向的。性别比（女性/男性/所有雌雄同体类型）在5年内没有波动。在我们的研究地块中，虽然目前的性别比例似乎是稳定的，但性别比例的变化可能会缓慢地朝着女性增加和男性减少的方向发展。性别更有可能随着更高的生长率和全年更多的光照而改变。在改变性别的个体中，那些在多叶季节暴露于光照较少且直径生长较少的个体倾向于从雌雄同体转变为单一性别。因此，E. japonica似乎是由内在和非生物环境因素介导的对个体内部生理条件的反应来解释的。
Sex change affects the sex ratios of plant populations and may play an essential role in the evolutionary shift of sexual systems. Sex change can be a strategy for increasing fitness over the lifetime of a plant, and plant size, environmental factors, and growth rate may affect sex change. We described frequent, repeated sex changes following various patterns in a subdioecious Eurya japonica population over five successive years. Of the individuals, 27.5% changed their sex at least once, and these changes were unidirectional or bidirectional. The sex ratio (females/males/all hermaphrodite types) did not fluctuate over the 5 years. In our study plots, although the current sex ratio among the sexes appears to be stable, the change in sex ratio may be slowly progressing toward increasing females and decreasing males. Sex was more likely to change with higher growth rates and more exposure to light throughout the year. Among individuals that changed sex, those that were less exposed to light in the leafy season and had less diameter growth tended to shift from hermaphrodite to a single sex. Therefore, sex change in E. japonica seemed to be explained by a response to the internal physiological condition of an individual mediated by intrinsic and abiotic environmental factors.