期刊
NATURE GENETICS
卷 48, 期 4, 页码 438-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ng.3517
关键词
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资金
- Agriculture and Food Research Initiative from the US Department of Agriculture [2012-85117-19435]
- US National Science Foundation [NSF-MCB-1339194]
- EMBRAPA (Brazil) [02.11.08.006.00]
- National High-Technology Research and Development Program (China) [2012AA02A701]
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1402183, 1339194] Funding Source: National Science Foundation
- Direct For Biological Sciences
- Div Of Biological Infrastructure [1444806] Funding Source: National Science Foundation
- ARS [ARS-0425040, 813499] Funding Source: Federal RePORTER
- NIFA [578715, 2012-85117-19435] Funding Source: Federal RePORTER
Cultivated peanut (Arachis hypogaea) is an allotetraploid with closely related subgenomes of a total size of similar to 2.7 Gb. This makes the assembly of chromosomal pseudomolecules very challenging. As a foundation to understanding the genome of cultivated peanut, we report the genome sequences of its diploid ancestors (Arachis duranensis and Arachis ipaensis). We show that these genomes are similar to cultivated peanut's A and B subgenomes and use them to identify candidate disease resistance genes, to guide tetraploid transcript assemblies and to detect genetic exchange between cultivated peanut's subgenomes. On the basis of remarkably high DNA identity of the A. ipaensis genome and the B subgenome of cultivated peanut and biogeographic evidence, we conclude that A. ipaensis may be a direct descendant of the same population that contributed the B subgenome to cultivated peanut.
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