Can evolutionary history predict plant plastic responses to climate change?
Can evolutionary history predict plant plastic responses to climate change?
复制标题
进化史可以预测植物塑料对气候变化的反应吗？
DOI：
10.1111/nph.18194
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Liu H
中科院分区：
文献类型：
--
作者：
Liu H
植物的可塑性反应对于物种在气候变化下的适应和生存至关重要，但它们是否受到进化历史（进化史）的限制在很大程度上尚不清楚。植物叶片性状是决定植物在不同环境中表现的关键，如果这些性状及其变化是遗传学依赖的，则可以进行预测以识别易受气候变化影响的物种。（光合速率、比叶面积和叶氮含量）及其在四种环境变化情景下的变化通过对434个物种的210个模拟实验（气候变暖、干旱、CO2浓度升高、氮素添加）的系统发育分析，我们发现这3个性状在4种情景下都存在系统发育信号，但在它们的变异中没有发现系统发育信号。这表明，密切相关的物种表现出相似的性状，但它们的塑性反应不能预测的物种相关性下的环境变化。同时，系统发育削弱了斜率，但没有改变传统的成对性状关系的方向，表明共同进化的叶性状对在不同的环境条件下具有一致的反应。系统发育可以识别出具有相似性状的物种丰富的谱系，并预测它们在气候变化下的关系，但植物表型变异的程度在进化分支中并不一致。
Plant plastic responses are critical to the adaptation and survival of species under climate change, but whether they are constrained by evolutionary history (phylogeny) is largely unclear. Plant leaf traits are key in determining plants’ performance in different environments, and if these traits and their variation are phylogenetically dependent, predictions could be made to identify species vulnerable to climate change.We compiled data on three leaf traits (photosynthetic rate, specific leaf area, and leaf nitrogen content) and their variation under four environmental change scenarios (warming, drought, elevated CO2, or nitrogen addition) for 434 species, from 210 manipulation experiments.We found phylogenetic signal in the three traits but not in their variation under the four scenarios. This indicates that closely related species show similar traits but that their plastic responses could not be predicted from species relatedness under environmental change. Meanwhile, phylogeny weakened the slopes but did not change the directions of conventional pairwise trait relationships, suggesting that co‐evolved leaf trait pairs have consistent responses under contrasting environmental conditions.Phylogeny can identify lineages rich in species showing similar traits and predict their relationships under climate change, but the degree of plant phenotypic variation does not vary consistently across evolutionary clades.