Genomes shed light on the evolution of Begonia, a mega-diverse genus
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Dokumenter
- Fulltext
Forlagets udgivne version, 3,27 MB, PDF-dokument
Clarifying the evolutionary processes underlying species diversification and adaptation is a key focus of evolutionary biology. Begonia (Begoniaceae) is one of the most species-rich angiosperm genera with c. 2000 species, most of which are shade-adapted. Here, we present chromosome-scale genome assemblies for four species of Begonia (B. loranthoides, B. masoniana, B. darthvaderiana and B. peltatifolia), and whole genome shotgun data for an additional 74 Begonia representatives to investigate lineage evolution and shade adaptation of the genus. The four genome assemblies range in size from 331.75 Mb (B. peltatifolia) to 799.83 Mb (B. masoniana), and harbor 22 059–23 444 protein-coding genes. Synteny analysis revealed a lineage-specific whole-genome duplication (WGD) that occurred just before the diversification of Begonia. Functional enrichment of gene families retained after WGD highlights the significance of modified carbohydrate metabolism and photosynthesis possibly linked to shade adaptation in the genus, which is further supported by expansions of gene families involved in light perception and harvesting. Phylogenomic reconstructions and genomics studies indicate that genomic introgression has also played a role in the evolution of Begonia. Overall, this study provides valuable genomic resources for Begonia and suggests potential drivers underlying the diversity and adaptive evolution of this mega-diverse clade.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | New Phytologist |
| Vol/bind | 234 |
| Udgave nummer | 1 |
| Sider (fra-til) | 295-310 |
| Antal sider | 16 |
| ISSN | 0028-646X |
| DOI | |
| Status | Udgivet - 2022 |
Bibliografisk note
Funding Information:
We thank Dr Cecilia Koo Botanic Conservation Center (KBCC, Taiwan), Wenke Dong, Kai Xie, Zhongxuan Wang, Taijiu Zhou for providing materials; Hongbin Wang, Qi Chen (Sun Yat‐sen University) for kindly providing equipment for photosynthesis; Jianjun Jin (Kunming Institute of Botany, Chinese Academy of Sciences, China) for assistance with plastome assembly; Xiaoquan Wang, Hongyan Shan, Daming Zhang (Institute of Botany, Chinese Academy of Sciences, China), Zhiqiang Wu, Li Wang (Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences) and Hong Wu (South China Agricultural University) for suggestions and constructive discussions and advice. This work was supported by funding from the National Key R&D Program of China (2019YFC1711000), the Shenzhen Municipal Government of China (JCYJ20170817145512476), the Shenzhen Urban Administration (201917), the Fairy Lake Botanical Garden (FLSF‐2021‐01), the Public Welfare Forestry Industry Project of State Forestry Administration of China (201504322), and the National Natural Science Foundation of China (31601784). This work is part of the 10KP project. YVdP acknowledges funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement 833522) and from Ghent University (Methusalem funding, BOF.MET.2021.0005.01).
Publisher Copyright:
© 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation
Antal downloads er baseret på statistik fra Google Scholar og www.ku.dk
ID: 298734102