Effects of functional phylogeny of light-response-related orthologous genes on seedling survival in a subtropical forest  

作　　者：Hui Shang Yunquan Wang Baocai Han Xiangcheng Mi Lei Chen Yu Liang Keping Ma 

机构地区：[1]State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Shanghai Chenshan Plant Science Research Center,Chinese Academy of Sciences,Shanghai Chenshan Botanical Garden,Shanghai 201602,China [4]College of Chemistry and Life Sciences,Zhejiang Normal University,Jinhua 321004,China [5]State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China

出　　处：《Forest Ecosystems》2023年第1期31-36,共6页森林生态系统（英文版）

基　　金：funded by the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB31000000);National Natural Science Foundation of China(No.32161123003);Beijing Natural Science Foundation(No.5202018);National Key Research Development Program of China(No.2022YFF0802300)。

摘　　要：Background: Light is an important environmental factor affecting the growth and survival of plants in forest communities. The competition for light resources and divergent responses to light may affect plant species coexistence in natural forests through niche partitioning and environmental filtering, respectively.Methods: In the present study, sequences of light-response-related functional genes were extracted from transcriptomic data of 99 tree species in a subtropical forest and average and nearest taxon phylogenetic diversity of adult(A_Apd’, A_NTpd’) and seedling neighbors(S_Apd’, S_NTpd’) around each focal seedling were calculated to evaluate effects of differentiation in light-response-related genes on community assembly processes.Results: The results showed that seedling survival was related to S_NTpd’, S_Apd’and A_Apd’of two chlorophyll ab-binding proteins involved in the assembly of photosystem Ⅱ and two genes responsive to light intensity,indicating seedlings surrounded by neighbors with distinct light responses tended to have high survival rates.Conclusions: Our results indicated that niche partitioning due to competition for light resources between plants may act as the key mechanism in determining seedling dynamics in subtropical forests.

关 键 词：Species co-existence Forest communities Neighbor effects Community genomics Negative density dependence Niche partitioning 

分 类 号：S718.55[农业科学—林学]