Title:	Relationships of the wild peanut species, section Arachis: a resource for botanical classification, crop improvement, and germplasm management.
Authors:	LEAL-BERTIOLI, S. C. M. BLAS, F. J. de CHAVARRO, M. C. SIMPSON, C. E. VALLS, J. F. M. TALLURY, S. P. MORETZSOHN, M. de C. CUSTODIO, A. R. STALKER, H. T. SEIJO, G. BERTIOLI, D. J.
Affiliation:	SORAYA C. M. LEAL-BERTIOLI, UNIVERSITY OF GEORGIA; FRANCISCO J. DE BLAS, UNIVERSITY OF GEORGIA; M. CAROLINA CHAVARRO, UNIVERSITY OF GEORGIA; CHARLES E. SIMPSON, TEXAS A&M UNIVERSITY; JOSE FRANCISCO MONTENEGRO VALLS, CENARGEN; SHYAM P. TALLURY, USDA-AGRICULTURAL RESEARCH SERVICE; MARCIO DE CARVALHO MORETZSOHN, CENARGEN; ADRIANA R. CUSTODIO; H. THOMAS STALKER, CAROLINA STATE UNIVERSITY; GUILLERMO SEIJO, BOTANICAL INSTITUTE OF THE NORTHEAST (IBONE); DAVID J. BERTIOLI, UNIVERSITY OF GEORGIA.
Date Issued:	2024
Citation:	American Journal of Botany, v. 111, e16357, 2024.
Description:	Premise Wild species are strategic sources of valuable traits to be introduced into crops through hybridization. For peanut, the 33 currently described wild species in the section Arachis are particularly important because of their sexual compatibility with the domesticated species, Arachis hypogaea. Although numerous wild accessions are carefully preserved in seed banks, their morphological similarities pose challenges to routine classification. Methods Using a high-density array, we genotyped 272 accessions encompassing all diploid species in section Arachis. Detailed relationships between accessions and species were revealed through phylogenetic analyses and interpreted using the expertise of germplasm collectors and curators. Results Two main groups were identified: one with A genome species and the other with B, D, F, G, and K genomes. Species groupings generally showed clear boundaries. Structure within groups was informative, for instance, revealing the history of the proto-domesticate A. stenosperma. However, some groupings suggested multiple sibling species. Others were polyphyletic, indicating the need for taxonomic revision. Annual species were better defined than perennial ones, revealing limitations in applying classical and phylogenetic species concepts to the genus. We suggest new species assignments for several accessions. Conclusions Curated by germplasm collectors and curators, this analysis of species relationships lays the foundation for future species descriptions, classification of unknown accessions, and germplasm use for peanut improvement. It supports the conservation and curation of current germplasm, both critical tasks considering the threats to the genus posed by habitat loss and the current restrictions on new collections and germplasm transfer.
NAL Thesaurus:	Fabaceae Introgression Legumes Peanuts Phylogeny Taxonomy
Keywords:	Crop wild relatives Germplasm banks Pre-breeding Single nucleotide polymorphism (SNP)
DOI:	https://doi.org/10.1002/ajb2.16357
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CENARGEN)