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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

elective signatures and high genome-wide diversity in traditional Brazilian manioc (Manihot esculenta Crantz) varietie

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Alves-Pereira, Alessandro [1, 2] ; Zucchi, Maria Imaculada [3] ; Clement, Charles R. [4] ; Gomes Viana, Joao Paulo [5] ; Pinheiro, Jose Baldin [6] ; Veasey, Elizabeth Ann [6] ; de Souza, Anete Pereira [1, 2]
Total Authors: 7
[1] Univ Estadual Campinas UNICAMP, Inst Biol, Dept Biol Vegetal, Av Candido Rondon, 400, Cidade Univ, CP 6010, BR-13083875 Campinas, SP - Brazil
[2] Univ Estadual Campinas UNICAMP, Ctr Biol Mol & Engn Genet, Av Candido Rondon, 400, Cidade Univ, CP 6010, BR-13083875 Campinas, SP - Brazil
[3] Agencia Paulista Tecnol Agronegocios APTA, Polo Ctr Sul Rodovia SP 127, Km 30, BR-13400970 Piracicaba, SP - Brazil
[4] Inst Nacl Pesquisas Amazonia INPA, Av Andre Araujo 2936, BR-69067375 Manaus, Amazonas - Brazil
[5] Univ Illinois Urbana Champaign UIUC, Dept Crop Sci, AW-101 Turner Hall, 1102 South Goodwin Ave, Urbana, IL 61801 - USA
[6] Univ Sao Paulo ESALQ USP, Dept Genet, Escola Super Agr Luiz de Queiroz, Av Padua Dias 11, BR-13400970 Piracicaba, SP - Brazil
Total Affiliations: 6
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 12, n. 1 JAN 24 2022.
Web of Science Citations: 0

Knowledge about genetic diversity is essential to promote effective use and conservation of crops, because it enables farmers to adapt their crops to specific needs and is the raw material for breeding. Manioc (Manihot esculenta ssp. esculenta) is one of the world's major food crops and has the potential to help achieve food security in the context of on-going climate changes. We evaluated single nucleotide polymorphisms in traditional Brazilian manioc varieties conserved in the gene bank of the Luiz de Queiroz College of Agriculture, University of Sao Paulo. We assessed genome-wide diversity and identified selective signatures contrasting varieties from different biomes with samples of manioc's wild ancestor M. esculenta ssp. flabellifolia. We identified signatures of selection putatively associated with resistance genes, plant development and response to abiotic stresses that might have been important for the crop's domestication and diversification resulting from cultivation in different environments. Additionally, high neutral genetic diversity within groups of varieties from different biomes and low genetic divergence among biomes reflect the complexity of manioc's evolutionary dynamics under traditional cultivation. Our results exemplify how smallholder practices contribute to conserve manioc's genetic resources, maintaining variation of potential adaptive significance and high levels of neutral genetic diversity. (AU)

FAPESP's process: 12/08307-5 - Genetic structure and mating system of local varieties and wild populations of annatto (Bixa orellana L.) in Brazilian Amazonia and Central Brazil using microsatellite markers
Grantee:Elizabeth Ann Veasey
Support Opportunities: Regular Research Grants
FAPESP's process: 13/00003-0 - Genetic diversity, genomics and phylogeography of manioc (Manihot esculenta Crantz): implications for the dispersion and diffusion of the crop along the main fluvial axes in Brazilian Amazon Basin
Grantee:Maria Imaculada Zucchi
Support Opportunities: Regular Research Grants
FAPESP's process: 18/00036-9 - Genomic resources of manioc (Manihot esculenta) for the evolutionary study of cultivated varieties and in the search of important genes for breeding
Grantee:Alessandro Alves Pereira
Support Opportunities: Scholarships in Brazil - Post-Doctorate