C4 trees have a broader niche than their close C3 relatives.
C4 trees have a broader niche than their close C3 relatives.
复制标题
DOI：
10.1093/jxb/erac113
复制
发表时间：
2022-05-23
影响因子：
6.9
通讯作者：
中科院分区：
文献类型：
--
作者：
c3树和c4树生活在相似的环境中，与c3树相比，树木的c4光合作用扩大了生态位。以往的研究已经证实了C3和C4草本植物在降水和温度梯度上的生态分选：C4草本植物通常比C3草本植物占据更干燥和温暖的环境。然而，目前尚不清楚这种模式是否适用于C4树种，C4树种是大戟科特有的，只在夏威夷群岛上发现。在这里，我们将发生数据与当地环境和土壤数据集结合起来，首次区分了与树木生命形式光合多样化相关的生态因素。这些数据是在系统发育框架内提出的。我们发现C3和C4树生长在相似的环境中，但C4光合作用相对于C3树种扩大了树木的生态位。特别是，与C3树相比，C4树迁移到海拔更高的栖息地，植被稀疏（因此阳光更充足），温度更低，这与草本物种形成鲜明对比。了解C4光合作用与树种生态位之间的关系，有助于确定C4光合作用是如何在这种罕见的情况下在树木中进化的，以及这种独特的性状组合是否可以从工程的角度加以利用。
While C3and C4trees inhabit similar environments, C4photosynthesis in trees expands the ecological niche relative to that of C3tree species. Previous studies have demonstrated the ecological sorting of herbaceous C3 and C4 species along gradients of precipitation and temperature: C4 herbaceous species typically occupy drier and warmer environments than their C3 relatives. However, it is unclear if this pattern holds true for C4 tree species, which are unique to Euphorbiaceae and found only on the Hawaiian Islands. Here, we combine occurrence data with local environmental and soil datasets to, for the first time, distinguish the ecological factors associated with photosynthetic diversification in the tree life form. These data are presented within a phylogenetic framework. We show that C3 and C4 trees inhabit similar environments, but that C4 photosynthesis expands the ecological niche in trees relative to that of C3 tree species. In particular, when compared with C3 trees, C4 trees moved into higher elevation habitats with characteristically sparse vegetation (and thus greater sunlight) and cooler temperatures, a pattern which contrasts with that of herbaceous species. Understanding the relationship between C4 photosynthesis and ecological niche in tree species has implications for establishing how C4 photosynthesis has, in this rare instance, evolved in trees, and whether this unique combination of traits could be exploited from an engineering perspective.
登录
查看更多内容
影响因子：
2.9
作者：
Herrera A
通讯作者：
Herrera A
DOI：
10.1073/pnas.0909672107
发表时间：
2010-02-09
影响因子：
11.1
作者：
Edwards, Erika J.;Smith, Stephen A.
通讯作者：
Smith, Stephen A.
影响因子：
6.4
作者：
Griffith, Daniel M.;Anderson, T. Michael;Still, Christopher J.
通讯作者：
Still, Christopher J.
影响因子：
16.8
作者：
EHLERINGER, JR;SAGE, RF;PEARCY, RW
通讯作者：
PEARCY, RW
影响因子：
8
作者：
Giambelluca, Thomas W.;Chen, Qi;Delparte, Donna M.
通讯作者：
Delparte, Donna M.