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\begin{document}

\title{Phylogenetic Structure Analysis Based on Blue Light Receptor
Cryptochrome: Insights into How Light Shape the Vertical Structure of
Forest Community}



\author[1]{Qiming Mei}%
\author[1]{Ju-Yu Lian}%
\author[1]{Yue Wang}%
\author[1]{Meng Li}%
\author[1]{Xujun Gui}%
\author[1]{Zheng-Feng Wang}%
\author[1]{Hong-Lin Cao}%
\author[1]{Wan-Hui Ye}%
\affil[1]{South China Botanical Garden, Chinese Academy of Sciences}%


\vspace{-1em}



  
  \date{May 25, 2024}


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\begin{abstract}
Light-regime variability is an important environmental factor which
shapes a forest community. So far, none focused on the phylogenetic
pattern of plant light receptors, which reflects how genes' evolution
influences the coexistence of species in a community. In this study, we
analyzed community phylogenetic structure of the south subtropical
forest by sequences of plant blue light receptor cryptochrome (CRY) and
compared the results of DNA barcodes. Patterns of community assembly was
estimated by net relatedness index (NRI) and nearest taxon index (NTI).
We found that CRY showed quite different phylogenetic structure as
compared to DNA barcoding results, all habitats displayed consistent
phylogenetic structure patterns, suggesting a convergent evolution of
light sensing system of plant in local adaptation. Also, both NRI and
NTI values increased through the time, indicating that the phylogenetic
structure of tree community became more overdispersion as succession
proceeds; phylogenetic closely-related species tended to co-occur and
environmental filtering played a more important role in the community
assembly. Furthermore, phylogenetic patterns were more clustering in
upper canopy layers, and NTI values of all canopy layers were above
zero, suggesting that phylogenetically related species tended to coexist
and adapted to similar light conditions.%
\end{abstract}%



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