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

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Relation http://oar.icrisat.org/11836/
https://doi.org/10.3389/fpls.2021.636973
doi:10.3389/fpls.2021.636973
 
Title Novel Genes and Genetic Loci Associated With Root Morphological Traits, Phosphorus-Acquisition Efficiency and Phosphorus-Use Efficiency in Chickpea
 
Creator Thudi, M
Chen, Y
Pang, J
Kalavikatte, D
Bajaj, P
Roorkiwal, M
Chitikineni, A
Ryan, M H
Lambers, H
Siddique, K H M
Varshney, R K
 
Subject Chickpea
Genetics and Genomics
Legume Crops
 
Description 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.
 
Publisher Frontiers Media
 
Date 2021-05
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11836/1/Novel%20Genes-Thudi%20for%20OAR.pdf
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