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Echoes of ancient introgression punctuate stable genomic lineages in the evolution of figs

Authors :
Gardner, Elliot M.
Bruun-Lund, Sam
Niissalo, Matti
Chantarasuwan, Bhanumas
Clement, Wendy L.
Geri, Connie
Harrison, Rhett D.
Hipp, Andrew L.
Holvoet, Maxime
Khew, Gillian
Kjellberg, Finn
Liao, Shuai
Pederneiras, Leandro Cardoso
Peng, Yan-Qiong
Pereira, Joan T.
Phillipps, Quentin
Puad, Aida Shafreena Ahmad
Rasplus, Jean-Yves
Sang, Julia
Schou, Sverre Juul
Velautham, Elango
Weiblen, George D.
Zerega, Nyree J. C.
Zhang, Qian
Zhang, Zhen
Baraloto, Christopher
Rønsted, Nina
Gardner, Elliot M.
Bruun-Lund, Sam
Niissalo, Matti
Chantarasuwan, Bhanumas
Clement, Wendy L.
Geri, Connie
Harrison, Rhett D.
Hipp, Andrew L.
Holvoet, Maxime
Khew, Gillian
Kjellberg, Finn
Liao, Shuai
Pederneiras, Leandro Cardoso
Peng, Yan-Qiong
Pereira, Joan T.
Phillipps, Quentin
Puad, Aida Shafreena Ahmad
Rasplus, Jean-Yves
Sang, Julia
Schou, Sverre Juul
Velautham, Elango
Weiblen, George D.
Zerega, Nyree J. C.
Zhang, Qian
Zhang, Zhen
Baraloto, Christopher
Rønsted, Nina
Source :
Gardner , E M , Bruun-Lund , S , Niissalo , M , Chantarasuwan , B , Clement , W L , Geri , C , Harrison , R D , Hipp , A L , Holvoet , M , Khew , G , Kjellberg , F , Liao , S , Pederneiras , L C , Peng , Y-Q , Pereira , J T , Phillipps , Q , Puad , A S A , Rasplus , J-Y , Sang , J , Schou , S J , Velautham , E , Weiblen , G D , Zerega , N J C , Zhang , Q , Zhang , Z , Baraloto , C & Rønsted , N 2023 , ' Echoes of ancient introgression punctuate stable genomic lineages in the evolution of figs ' , Proceedings of the National Academy of Sciences of the United States of America , vol. 120 , no. 28 , e2222035120 .
Publication Year :
2023

Abstract

Studies investigating the evolution of flowering plants have long focused on isolating mechanisms such as pollinator specificity. Some recent studies have proposed a role for introgressive hybridization between species, recognizing that isolating processes such as pollinator specialization may not be complete barriers to hybridization. Occasional hybridization may therefore lead to distinct yet reproductively connected lineages. We investigate the balance between introgression and reproductive isolation in a diverse clade using a densely sampled phylogenomic study of fig trees (Ficus, Moraceae). Codiversification with specialized pollinating wasps (Agaonidae) is recognized as a major engine of fig diversity, leading to about 850 species. Nevertheless, some studies have focused on the importance of hybridization in Ficus, highlighting the consequences of pollinator sharing. Here, we employ dense taxon sampling (520 species) throughout Moraceae and 1,751 loci to investigate phylogenetic relationships and the prevalence of introgression among species throughout the history of Ficus. We present a well-resolved phylogenomic backbone for Ficus, providing a solid foundation for an updated classification. Our results paint a picture of phylogenetically stable evolution within lineages punctuated by occasional local introgression events likely mediated by local pollinator sharing, illustrated by clear cases of cytoplasmic introgression that have been nearly drowned out of the nuclear genome through subsequent lineage fidelity. The phylogenetic history of figs thus highlights that while hybridization is an important process in plant evolution, the mere ability of species to hybridize locally does not necessarily translate into ongoing introgression between distant lineages, particularly in the presence of obligate plant–pollinator relationships.

Details

Database :
OAIster
Journal :
Gardner , E M , Bruun-Lund , S , Niissalo , M , Chantarasuwan , B , Clement , W L , Geri , C , Harrison , R D , Hipp , A L , Holvoet , M , Khew , G , Kjellberg , F , Liao , S , Pederneiras , L C , Peng , Y-Q , Pereira , J T , Phillipps , Q , Puad , A S A , Rasplus , J-Y , Sang , J , Schou , S J , Velautham , E , Weiblen , G D , Zerega , N J C , Zhang , Q , Zhang , Z , Baraloto , C & Rønsted , N 2023 , ' Echoes of ancient introgression punctuate stable genomic lineages in the evolution of figs ' , Proceedings of the National Academy of Sciences of the United States of America , vol. 120 , no. 28 , e2222035120 .
Notes :
application/pdf, English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1397307754
Document Type :
Electronic Resource