跨代表观遗传学
后代
生物
适应性进化
下层林
表型可塑性
生态学
可塑性
适应(眼睛)
人口
母体效应
发育可塑性
进化生物学
动物
遗传学
神经科学
基因
人口学
热力学
天蓬
物理
社会学
怀孕
作者
Laura F. Galloway,Julie R. Etterson
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2007-11-16
卷期号:318 (5853): 1134-1136
被引量:544
标识
DOI:10.1126/science.1148766
摘要
Plants exhibit adaptive responses to light, but it is not known whether parental plants transmit environmental cues that elicit adaptive responses in offspring. We show that offspring life history (annual versus biennial) is influenced by the maternal light environment (understory versus light gap). This transgenerational plasticity is adaptive when offspring are grown in their maternal light environment, where seeds typically disperse. Projections of population growth show that plants that are appropriately cued for their light environment through maternal effects have 3.4 times greater fitness than otherwise. Transgenerational plasticity has evolved in response to natural variation in light and provides a flexible mechanism by which sedentary organisms cope with heterogeneous environments.
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