TY - JOUR
T1 - Global distribution and evolutionary transitions of floral symmetry in angiosperms
AU - Wang, Yunyun
AU - Luo, Ao
AU - Lyu, Tong
AU - Dimitrov, Dimitar
AU - Liu, Yunpeng
AU - Li, Yichao
AU - Xu, Xiaoting
AU - Freckleton, Robert P.
AU - Hao, Zhanqing
AU - Wang, Zhiheng
N1 - Publisher Copyright:
© 2023 The Authors.
PY - 2023/10
Y1 - 2023/10
N2 - Floral symmetry plays an important role in plant-pollinator interactions and may have remarkable impacts on angiosperm diversification. However, spatiotemporal patterns in floral symmetry and drivers of these patterns remain unknown. Here, using newly compiled floral symmetry (actinomorphy versus zygomorphy) data of 279,877 angiosperm species and their distributions and phylogenies, we estimated global geographic patterns and macroevolutionary dynamics of floral symmetry. We found that frequency of actinomorphic species increased with latitude, while that of zygomorphic species decreased. Solar radiation, present-day temperature, and Quaternary temperature change correlated with geographic variation in floral symmetry frequency. Evolutionary transitions from actinomorphy to zygomorphy dominated floral symmetry evolution, although the transition rate decreased with decreasing paleotemperature throughout the Cenozoic. Notably, we found that zygomorphy may not favor diversification of angiosperms as previously observed in some clades. Our study demonstrates the influence of (paleo)climate on spatiotemporal patterns in floral symmetry and challenges previous views about role of flower symmetry in angiosperm diversification.
AB - Floral symmetry plays an important role in plant-pollinator interactions and may have remarkable impacts on angiosperm diversification. However, spatiotemporal patterns in floral symmetry and drivers of these patterns remain unknown. Here, using newly compiled floral symmetry (actinomorphy versus zygomorphy) data of 279,877 angiosperm species and their distributions and phylogenies, we estimated global geographic patterns and macroevolutionary dynamics of floral symmetry. We found that frequency of actinomorphic species increased with latitude, while that of zygomorphic species decreased. Solar radiation, present-day temperature, and Quaternary temperature change correlated with geographic variation in floral symmetry frequency. Evolutionary transitions from actinomorphy to zygomorphy dominated floral symmetry evolution, although the transition rate decreased with decreasing paleotemperature throughout the Cenozoic. Notably, we found that zygomorphy may not favor diversification of angiosperms as previously observed in some clades. Our study demonstrates the influence of (paleo)climate on spatiotemporal patterns in floral symmetry and challenges previous views about role of flower symmetry in angiosperm diversification.
UR - http://www.scopus.com/inward/record.url?scp=85175221938&partnerID=8YFLogxK
U2 - 10.1126/sciadv.adg2555
DO - 10.1126/sciadv.adg2555
M3 - 文章
C2 - 37878700
AN - SCOPUS:85175221938
SN - 2375-2548
VL - 9
JO - Science Advances
JF - Science Advances
IS - 43
M1 - eadg2555
ER -