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Complex trait relationships between leaves and absorptive roots: Coordination in tissue N concentration but divergence in morphology.


ABSTRACT: Leaves and absorptive roots (i.e., first-order root) are above- and belowground plant organs related to resource acquisition; however, it is controversy over whether these two sets of functional traits vary in a coordinated manner. Here, we examined the relationships between analogous above- and belowground traits, including chemical (tissue C and N concentrations) and morphological traits (thickness and diameter, specific leaf area and root length, and tissue density) of 154 species sampling from eight subtropical and temperate forests. Our results showed that N concentrations of leaves and absorptive roots were positively correlated independent of phylogeny and plant growth forms, whereas morphological traits between above- and belowground organs varied independently. These results indicate that, different from plant economics spectrum theory, there is a complex integration of diverse adaptive strategies of plant species to above- and belowground environments, with convergent adaptation in nutrient traits but divergence in morphological traits across plant organs. Our results offer a new perspective for understanding the resource capture strategies of plants in adaptation to heterogeneous environments, and stress the importance of phylogenetic consideration in the discussion of cross-species trait relationships.

SUBMITTER: Wang R 

PROVIDER: S-EPMC5395436 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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Complex trait relationships between leaves and absorptive roots: Coordination in tissue N concentration but divergence in morphology.

Wang Ruili R   Wang Qiufeng Q   Zhao Ning N   Yu Guirui G   He Nianpeng N  

Ecology and evolution 20170319 8


Leaves and absorptive roots (i.e., first-order root) are above- and belowground plant organs related to resource acquisition; however, it is controversy over whether these two sets of functional traits vary in a coordinated manner. Here, we examined the relationships between analogous above- and belowground traits, including chemical (tissue C and N concentrations) and morphological traits (thickness and diameter, specific leaf area and root length, and tissue density) of 154 species sampling fr  ...[more]

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