Identification of quantitative trait loci (QTLs) regulating leaf SPAD value and trichome density in mungbean (Vigna radiata L.) using genotyping-by-sequencing (GBS) approach
Nikki Kumari, Gyan Prakash Mishra, Harsh Kumar Dikshit, Soma Gupta, Anirban Roy, Subodh Kumar Sinha, Dwijesh C. Mishra, Shouvik Das, Ranjeet R. Kumar, Ramakrishnan Madhavan Nair, Muraleedhar Aski
TL;DR
This study identifies genetic regions in mungbean that control leaf traits linked to plant health and disease resistance.
Contribution
The study identifies two QTLs and their candidate genes for SPAD value and trichome density in mungbean using GBS.
Findings
Two major QTLs (qSPAD-7-1 and qTric-7-2) were identified on chromosome 7 in mungbean.
Candidate genes like VRADI07G24840 and VRADIO7G29860 are linked to trichome density and chlorophyll biosynthesis.
The findings suggest potential for breeding mungbean with improved yield and MYMIV resistance.
Abstract
Quantitative trait loci (QTL) mapping is used for the precise localization of genomic regions regulating various traits in plants. Two major QTLs regulating Soil Plant Analysis Development (SPAD) value (qSPAD-7-1) and trichome density (qTric-7-2) in mungbean were identified using recombinant inbred line (RIL) populations (PMR-1×Pusa Baisakhi) on chromosome 7. Functional analysis of QTL region identified 35 candidate genes for SPAD value (16 No) and trichome (19 No) traits. The candidate genes regulating trichome density on the dorsal leaf surface of the mungbean include VRADI07G24840, VRADI07G17780, and VRADI07G15650, which encodes for ZFP6, TFs bHLH DNA-binding superfamily protein, and MYB102, respectively. Also, candidate genes having vital roles in chlorophyll biosynthesis are VRADIO7G29860, VRADIO7G29450, and VRADIO7G28520, which encodes for s-adenosyl-L-methionine, FTSHI1 protein,…
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Taxonomy
TopicsCardiac Structural Anomalies and Repair · Cardiovascular Effects of Exercise · Cardiac pacing and defibrillation studies