Wang, Hua-Ling, Geng, Shi-Long, Liu, Shu-Sheng, Li, Zhong-Tao, Cameron, Stephen, Lei, Teng, Xu, Wei, Liu, Qing, Zuo, Shuang, Omongo, Christopher A., Maruthi, M.N. ORCID: https://orcid.org/0000-0002-8060-866X, Mugerwa, Habibu, Wang, Xiao-Wei, Liu, Yin-Quan, Navas-Castillo, Jesús, Fiallo-Olivé, Elvira, Lee, Kyeong-Yeoll, Krause-Sakate, Renate, Delatte, Hélène, Ng, James, Seal, Susan ORCID: https://orcid.org/0000-0002-3952-1562 and Colvin, John (2024) Unraveling the cryptic Bemisia tabaci species complex: global phylogenomic analysis reveals evolutionary relationships and biogeographic patterns. Insect Science. ISSN 1672-9609 (Print), 1744-7917 (Online) (In Press)

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Abstract

Bemisia tabaci is a complex of cryptic agro-economically important pest species characterized by diverse clades, substantial genetic diversity along with strong phylogeographic associations. However, a comprehensive phylogenomic analysis across the entire complex has been lacking, we thus conducted phylogenomic analyses and explored biogeographic patterns used 680 single-copy nuclear genes (SCNs) obtained from whole-genome sequencing data of 58 globally sourced B. tabaci specimens. We constructed both concatenation and coalescent trees using 680 SCNs, which produced highly supported bootstrap values and nearly identical topologies for all major clades. When comparing these concatenation trees with those constructed using mtCOI and mitochondrial genome, we found conflicting phylogenetic relationships, with the later trees recovering fewer major clades. In a separate comparison between concatenation and coalescent trees, particularly those generated using IQ-TREE, were found to delineate population relationships more effectively than RaxML. In contrast, coalescent phylogenies were proficient in elucidating geographical dispersal patterns and the reorganization of biological species. Furthermore, we provided a strict consensus tree that clearly defines relationships within most clades, laying a solid foundation for future research on the evolution and taxonomy of B. tabaci. Ancestral range estimates suggested that the ancestral region of the complex is likely situated in equatorial Africa, the Middle East, and Mediterranean regions. Subsequently, expansion occurred into part of the Palearctic and further into the Nearctic, Neotropical, Indomalayan, and Australasian regions. These findings challenge both previous classifications and origin hypotheses, offering a notably more comprehensive understanding of the global distribution, evolutionary history, diversification, and biogeography of B. tabaci.

Item Type:	Article
Uncontrolled Keywords:	Bemisia tabaci, cryptic species, phylogenomic tree, species tree, ancestral geographic ranges
Subjects:	Q Science > Q Science (General) Q Science > QR Microbiology S Agriculture > S Agriculture (General)
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > Natural Resources Institute Faculty of Engineering & Science > Natural Resources Institute > Centre for Sustainable Agriculture 4 One Health Faculty of Engineering & Science > Natural Resources Institute > Centre for Sustainable Agriculture 4 One Health > Plant Disease & Vectors
Last Modified:	16 Dec 2024 11:52
URI:	http://gala.gre.ac.uk/id/eprint/48883

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