Genome Sequencing and Analysis of the Peanut B-Genome Progenitor (Arachis ipaensis )

Frontiers in Plant Science
Qing LuXuanqiang Liang

Abstract

Peanut (Arachis hypogaea L.), an important leguminous crop, is widely cultivated in tropical and subtropical regions. Peanut is an allotetraploid, having A and B subgenomes that maybe have originated in its diploid progenitors Arachis duranensis (A-genome) and Arachis ipaensis (B-genome), respectively. We previously sequenced the former and here present the draft genome of the latter, expanding our knowledge of the unique biology of Arachis. The assembled genome of A. ipaensis is ~1.39 Gb with 39,704 predicted protein-encoding genes. A gene family analysis revealed that the FAR1 family may be involved in regulating peanut special fruit development. Genomic evolutionary analyses estimated that the two progenitors diverged ~3.3 million years ago and suggested that A. ipaensis experienced a whole-genome duplication event after the divergence of Glycine max. We identified a set of disease resistance-related genes and candidate genes for biological nitrogen fixation. In particular, two and four homologous genes that may be involved in the regulation of nodule development were obtained from A. ipaensis and A. duranensis, respectively. We outline a comprehensive network involved in drought adaptation. Additionally, we analyzed the met...Continue Reading

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Citations

Apr 10, 2020·The Plant Journal : for Cell and Molecular Biology·Kanhu C Moharana, Thiago M Venancio
Apr 25, 2020·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Manish K PandeyWeijian Zhuang
Jan 8, 2021·Journal of Plant Physiology·Mahendar ThudiRajeev K Varshney
May 25, 2021·Frontiers in Genetics·Yin LiRay Ming

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Software Mentioned

MEGA
SSPACE
RepeatModeler
SOAPdenovo2
BLASTP
MCScanX
MCScanX package
Gunplot
Circos
Mummerplot

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