Whole-genome Resequencing of 292 Pigeonpea Accessions Identifies Genomic Regions Associated with Domestication and Agronomic Traits

Overview

Journal Nat Genet

Specialty Genetics

Date 2017 May 23

PMID 28530677

Citations 97

Authors

Rajeev K Varshney

Rachit K Saxena

Hari D Upadhyaya

Aamir W Khan

Yue Yu

Changhoon Kim

Abhishek Rathore

Dongseon Kim

Jihun Kim

Shaun An

Vinay Kumar

Ghanta Anuradha

Kalinati Narasimhan Yamini

Wei Zhang

Sonnappa Muniswamy

Jong-So Kim

R Varma Penmetsa

Eric Von Wettberg

Swapan K Datta

Affiliations

Soon will be listed here.

Abstract

Pigeonpea (Cajanus cajan), a tropical grain legume with low input requirements, is expected to continue to have an important role in supplying food and nutritional security in developing countries in Asia, Africa and the tropical Americas. From whole-genome resequencing of 292 Cajanus accessions encompassing breeding lines, landraces and wild species, we characterize genome-wide variation. On the basis of a scan for selective sweeps, we find several genomic regions that were likely targets of domestication and breeding. Using genome-wide association analysis, we identify associations between several candidate genes and agronomically important traits. Candidate genes for these traits in pigeonpea have sequence similarity to genes functionally characterized in other plants for flowering time control, seed development and pod dehiscence. Our findings will allow acceleration of genetic gains for key traits to improve yield and sustainability in pigeonpea.

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