A cost?benefit analysis of leaf carbon economy with consideration of seasonal changes in leaf traits for sympatric deciduous and evergreen congeners: implications for their coexistence
A cost?benefit analysis of leaf carbon economy with consideration of seasonal changes in leaf traits for sympatric deciduous and evergreen congeners: implications for their coexistence
复制标题
考虑同域落叶和常绿同源植物叶片性状季节变化的叶片碳经济成本效益分析：对其共存的影响
DOI：
10.1111/nph.18022
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发表时间：
2022
期刊：
影响因子：
9.4
通讯作者：
Onoda Yusuke
中科院分区：
文献类型：
--
作者：
Ye Yunhan;Kitayama Kanehiro;Onoda Yusuke
落叶和万年青物种，在不同的分支中反复进化，尽管它们的叶子特征存在很大差异，但它们可以在给定的环境中共存。目前还不清楚这两组在其生命周期中叶片性状的发展方面有何不同，也不清楚它们的碳经济--生命周期碳增益和叶片构建成本之间的平衡--是如何确定的。叶机械强度和叶水势，并估计了五对密切相关的万年青树种和落叶树种在温带森林中共存，万年青树种的面积在第一个春季低于落叶树种，在夏季与落叶树种相似，在秋季高于落叶树种，直到第二年春季。叶机械强度，渗透压和LMA不断增加的万年青树种，而在落叶树种保持基本不变，冬季。这两组植物的寿命期碳增加与叶片建造成本的比率相似，与越冬相关的额外成本由万年青植物更长的光合作用收益所偿还，从而使万年青和落叶叶习性在季节性环境中共存。
Deciduous and evergreen species, which have evolved repeatedly across different clades, can coexist in a given environment despite substantial differences in their leaf traits. It remains unclear how these two groups differ in the development of leaf traits over their lifespans or how their carbon economy – the balance between lifetime carbon gain and leaf construction cost – is determined.We determined the photosynthetic rate (Aarea), leaf mass per area (LMA), leaf mechanical strength and leaf water potentials and estimated the lifetime carbon gain and leaf construction cost of five closely related pairs of evergreen and deciduous species co‐occurring in a temperate forest.Aareaof evergreen species was lower during their first spring, similar in summer and higher than the autumn until the following spring than their deciduous counterparts. Leaf mechanical strength, osmotic pressures and LMA increased continuously towards winter in evergreen species while remaining largely constant in deciduous species. The ratio of lifetime carbon gain to leaf construction cost was similar between the two groups.The additional cost associated with enduring winter is paid back by a longer revenue of photosynthesis in evergreen species, allowing evergreen and deciduous leaf habits to coexist in the seasonal environment.