Sequencing Ancestor Diploid Genomes for Enhanced Genome Understanding and Peanut Improvement

Nayak, S N and Pandey, M K and Jackson, S A and Liang, X and Varshney, R K (2017) Sequencing Ancestor Diploid Genomes for Enhanced Genome Understanding and Peanut Improvement. In: The Peanut Genome. Compendium of Plant Genomes book series (CPG) . Springer, pp. 135-147. ISBN 978-3-319-63933-8

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Cultivated peanut (Arachis hypogaea) is an allotetraploid with closely related subgenomes of a total size of ~2.7 Gb. To understand the genome of the cultivated peanut, it is prerequisite to know the genome organization of its diploid progenitors, A-genome—Arachis duranensis and B-genome—A. ipaensis. Two genome sequencing projects conducted sequencing and analysis of the genomes of diploid ancestors: (1) International Peanut Genome Initiative (IPGI) reported the sequencing of both A- and B-genomes; while (2) Diploid Progenitor Peanut Arachis Genome Sequencing Consortium (DPPAGSC) reported the sequencing of A-genome. IPGI study showed that these genomes are similar to cultivated peanut’s A- and B-subgenomes and used them to identify candidate disease resistance genes, to guide tetraploid transcript assemblies and to detect genetic exchange between cultivated peanut’s subgenomes thus providing evidence about direct descendant of the B subgenome in cultivated peanut. The DPPAGSC study, on the other hand, provided new insights into geocarpy, oil biosynthesis, and allergens in addition to providing information about evolution and polyploidization. These genome sequencing efforts have improved the understanding about the complex peanut genome and genome architecture which will play a very important role in peanut applied genomics and breeding.

Item Type: Book Section
Divisions: Research Program : Genetic Gains
Series Name: Compendium of Plant Genomes book series (CPG)
Uncontrolled Keywords: Genome Sequence, Peanut, Plant Breeding, Genome assembly, Annotation, Genes, Arachis hypogaea, A duranensis, A ipaensis, Genome sequencing, Peanut genome, Genome architecture, Applied genomics, DPPAGSC, IPGI
Subjects: Others > Crop Improvement
Mandate crops > Groundnut
Others > Genetics and Genomics
Depositing User: Mr Ramesh K
Date Deposited: 04 Mar 2018 16:23
Last Modified: 04 Mar 2018 16:33
Acknowledgement: UNSPECIFIED
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