Identification of novel QTL governing root architectural traits in an interspecific soybean population

PloS One
Lakshmi P ManavalanHenry T Nguyen

Abstract

Cultivated soybean (Glycine max L.) cv. Dunbar (PI 552538) and wild G. soja (PI 326582A) exhibited significant differences in root architecture and root-related traits. In this study, phenotypic variability for root traits among 251 BC2F5 backcross inbred lines (BILs) developed from the cross Dunbar/PI 326582A were identified. The root systems of the parents and BILs were evaluated in controlled environmental conditions using a cone system at seedling stage. The G. max parent Dunbar contributed phenotypically favorable alleles at a major quantitative trait locus on chromosome 8 (Satt315-I locus) that governed root traits (tap root length and lateral root number) and shoot length. This QTL accounted for >10% of the phenotypic variation of both tap root and shoot length. This QTL region was found to control various shoot- and root-related traits across soybean genetic backgrounds. Within the confidence interval of this region, eleven transcription factors (TFs) were identified. Based on RNA sequencing and Affymetrix expression data, key TFs including MYB, AP2-EREBP and bZIP TFs were identified in this QTL interval with high expression in roots and nodules. The backcross inbred lines with different parental allelic combination sho...Continue Reading

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Citations

Jul 15, 2015·Journal of Integrative Plant Biology·Silvas J PrinceHenry T Nguyen
Feb 7, 2017·International Journal of Molecular Sciences·Nacira MuñozHon-Ming Lam
Jan 9, 2017·Journal of Experimental Botany·Silvas J PrinceHenry T Nguyen
Dec 9, 2016·Journal of Experimental Botany·Babu ValliyodanHenry T Nguyen
Mar 10, 2018·Journal of Experimental Botany·Heng YeHenry T Nguyen
Jan 10, 2017·Frontiers in Plant Science·Giriraj KumawatGyanesh K Satpute
Jan 27, 2018·Genome Génome / Conseil National De Recherches Canada·Xilan YangYouliang Zheng
May 19, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jie WangHanzhong Wang
Dec 15, 2020·Plant Phenomics : a Science Partner Journal·Kevin G FalkAsheesh K Singh
Feb 9, 2021·Frontiers in Plant Science·Aditya PratapSanjeev Gupta
Mar 2, 2021·Frontiers in Plant Science·Arun Prabhu DhanapalFelix B Fritschi

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Methods Mentioned

BETA
PCR
chip

Software Mentioned

SAS
Affymetrix
Glyma
ICI
WinRhizoPro

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