历史上的木薯基因组阐明了在长期无性系栽培下多样性的维持

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-03-07

Logan Kistler, Fabio de Oliveira Freitas, Rafal M. Gutaker, S. Yoshi Maezumi, Jazmín Ramos-Madrigal, Marcelo F. Simon, J. Moises Mendoza F., Sergei V. Drovetski, Hope Loiselle, Eder Jorge de Oliveira, Eduardo Alano Vieira, Luiz Joaquim Castelo Branco Carvalho, Marina Ellis Perez, Audrey T. Lin, Hsiao-Lei Liu, Rachel Miller, Natalia A. S. Przelomska, Aakrosh Ratan, Nathan Wales, Kevin Wann, Shuya Zhang, Magdalena García, Daniela Valenzuela, Francisco Rothhammer, Calogero M. Santoro, Alejandra I. Domic, José M. Capriles, Robin G. Allaby

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引用次数: 0

摘要

木薯也被称为木薯和尤卡，是世界上最重要的作物之一，在全新世早期起源于南美洲。对其淀粉根的驯化涉及到从有性繁殖到无性繁殖的几乎全部转变，现在世界上几乎所有的木薯都是由茎扦插生长的。在这项工作中，我们分析了573个新的和已发表的基因组，重点关注来自美洲的传统品种和来自植物标本室的野生近缘种，以揭示这种向克隆性转变的影响。我们观察到远距离的亲缘关系、高遗传多样性的维持、代际杂合性的丰富以及连接全世界所有木薯的血统单倍体的基因组镶嵌。对巴西塞拉多的土著传统农民的采访阐明了维持、多样化和共享基因库的传统管理策略如何塑造了木薯的多样性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Historic manioc genomes illuminate maintenance of diversity under long-lived clonal cultivation

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Historic manioc genomes illuminate maintenance of diversity under long-lived clonal cultivation

Manioc—also called cassava and yuca—is among the world’s most important crops, originating in South America in the early Holocene. Domestication for its starchy roots involved a near-total shift from sexual to clonal propagation, and almost all manioc worldwide is now grown from stem cuttings. In this work, we analyze 573 new and published genomes, focusing on traditional varieties from the Americas and wild relatives from herbaria, to reveal the effects of this shift to clonality. We observe kinship over large distances, maintenance of high genetic diversity, intergenerational heterozygosity enrichment, and genomic mosaics of identity-by-descent haploblocks that connect all manioc worldwide. Interviews with Indigenous traditional farmers in the Brazilian Cerrado illuminate how traditional management strategies for sustaining, diversifying, and sharing the gene pool have shaped manioc diversity.

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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