Novel Genes and Genetic Loci Associated With Root Morphological Traits, Phosphorus-Acquisition Efficiency and Phosphorus-Use Efficiency in Chickpea

Thudi, M and Chen, Y and Pang, J and Kalavikatte, D and Bajaj, P and Roorkiwal, M and Chitikineni, A and Ryan, M H and Lambers, H and Siddique, K H M and Varshney, R K (2021) Novel Genes and Genetic Loci Associated With Root Morphological Traits, Phosphorus-Acquisition Efficiency and Phosphorus-Use Efficiency in Chickpea. Frontiers in Plant Science (TSI), 12. pp. 1-11. ISSN 1664-462X

PDF - Published Version Download (2MB)

Abstract

Chickpea—the second most important grain legume worldwide—is cultivated mainly on marginal soils. Phosphorus (P) deficiency often restricts chickpea yields. Understanding the genetics of traits encoding P-acquisition efficiency and P-use efficiency will help develop strategies to reduce P-fertilizer application. A genome-wide association mapping approach was used to determine loci and genes associated with root architecture, root traits associated with P-acquisition efficiency and P-use efficiency, and any associated proxy traits. Using three statistical models—a generalized linear model (GLM), a mixed linear model (MLM), and a fixed and random model circulating probability unification (FarmCPU) —10, 51, and 40 marker-trait associations (MTAs), respectively were identified. A single nucleotide polymorphism (SNP) locus (Ca1_12310101) on Ca1 associated with three traits, i.e., physiological P-use efficiency, shoot dry weight, and shoot P content was identified. Genes related to shoot P concentration (NAD kinase 2, dynamin-related protein 1C), physiological P-use efficiency (fasciclinlike arabinogalactan protein), specific root length (4-coumarate–CoA ligase 1) and manganese concentration in mature leaves (ABC1 family protein) were identified. The MTAs and novel genes identified in this study can be used to improve P-use efficiency in chickpea.

Item Type:	Article
Divisions:	Research Program : Genetic Gains
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Chickpea, Genome-wide association study, Phosphorus-acquisition efficiency, Phosphorus-use efficiency, Root traits, Genetic mapping
Subjects:	Mandate crops > Chickpea Others > Genetics and Genomics Others > Legume Crops
Depositing User:	Mr Arun S
Date Deposited:	05 Jun 2021 16:21
Last Modified:	05 Jun 2021 16:23
URI:	http://oar.icrisat.org/id/eprint/11836
Official URL:	https://doi.org/10.3389/fpls.2021.636973
Projects:	UNSPECIFIED
Funders:	Department of Agriculture and Cooperation and Farmers Welfare, Govt. of India, Bill and Melinda Gates Foundation, University of Western Australia
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

View Statistics

Actions (login required)

View Item