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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Genetic Dissection of Root Angle of Brassica napus in Response to Low Phosphorus
Frontiers in Plant Science, Vol.12, pp.1-12
29/07/2021
PMCID: PMC8358456
PMID: 34394150
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Abstract
Plant root angle determines the vertical and horizontal distribution of roots in the soil layer, which further influences the acquisition of phosphorus (P) in topsoil. Large genetic variability for the lateral root angle (root angle) was observed in a linkage mapping population (BnaTNDH population) and an association panel of Brassica napus whether at a low P (LP) or at an optimal P (OP). At LP, the average root angle of both populations became smaller. Nine quantitative trait loci (QTLs) at LP and three QTLs at OP for the root angle and five QTLs for the relative root angle (RRA) were identified by the linkage mapping analysis in the BnaTNDH population. Genome-wide association studies (GWASs) revealed 11 single-nucleotide polymorphisms (SNPs) significantly associated with the root angle at LP (LPRA). The interval of a QTL for LPRA on A06 (qLPRA-A06c) overlapped with the confidence region of the leading SNP (Bn-A06-p14439400) significantly associated with LPRA. In addition, a QTL cluster on chromosome C01 associated with the root angle and the primary root length (PRL) in the “pouch and wick” high-throughput phenotyping (HTP) system, the root P concentration in the agar system, and the seed yield in the field was identified in the BnaTNDH population at LP. A total of 87 genes on A06 and 192 genes on C01 were identified within the confidence interval, and 14 genes related to auxin asymmetric redistribution and root developmental process were predicted to be candidate genes. The identification and functional analyses of these genes affecting LPRA are of benefit to the cultivar selection with optimal root system architecture (RSA) under P deficiency in Brassica napus.
Details
- Title
- Genetic Dissection of Root Angle of Brassica napus in Response to Low Phosphorus
- Creators
- Xianjie Duan - Huazhong Agricultural UniversityXiaohua Wang - Linyi UniversityKemo Jin - China Agricultural UniversityWei Wang - Huazhong Agricultural UniversityHaijiang Liu - Huazhong Agricultural UniversityLing Liu - Huazhong Agricultural UniversityYing Zhang - Hunan Agricultural UniversityJohn P. Hammond - University of ReadingPhilip J. White - Huazhong Agricultural UniversityGuangda Ding - Huazhong Agricultural UniversityFangsen Xu - Huazhong Agricultural UniversityLei Shi - Huazhong Agricultural University
- Publication Details
- Frontiers in Plant Science, Vol.12, pp.1-12
- Publisher
- Frontiers Research Foundation
- Grant note
- This study was supported by the National Key R&D Program of China (Grant No. 2017YFD0200200) and the National Natural Science Foundation of China (Grant No. 31972498). We acknowledge the Applied Basic Research Fronts Program of Wuhan City (Grant No. 2018020401011302) and the Natural and Fundamental Research Funds for the Central Universities of China (Grant No. 2662019PY013).
- Identifiers
- 991012961196202368
- Copyright
- Copyright © 2021 Duan, Wang, Jin, Wang, Liu, Liu, Zhang, Hammond, White, Ding, Xu and Shi. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
- Academic Unit
- Faculty of Science and Engineering; School of Environment, Science and Engineering; Southern Cross Plant Science
- Language
- English
- Resource Type
- Journal article