Acid phosphatase gene GmHAD1 linked to low phosphorus tolerance in soybean, through fine mapping

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Zhandong CaiHai Nian

Abstract

Map-based cloning identified GmHAD1, a gene which encodes a HAD-like acid phosphatase, associated with soybean tolerance to low phosphorus stress. Phosphorus (P) deficiency in soils is a major limiting factor for crop growth worldwide. Plants may adapt to low phosphorus (LP) conditions via changes to root morphology, including the number, length, orientation, and branching of the principal root classes. To elucidate the genetic mechanisms for LP tolerance in soybean, quantitative trait loci (QTL) related to root morphology responses to LP were identified via hydroponic experiments. In total, we identified 14 major loci associated with these traits in a RIL population. The log-likelihood scores ranged from 2.81 to 7.43, explaining 4.23-13.98% of phenotypic variance. A major locus on chromosome 08, named qP8-2, was co-localized with an important P efficiency QTL (qPE8), containing phosphatase genes GmACP1 and GmACP2. Another major locus on chromosome 10 named qP10-2 explained 4.80-13.98% of the total phenotypic variance in root morphology. The qP10-2 contains GmHAD1, a gene which encodes an acid phosphatase. In the transgenic soybean hairy roots, GmHAD1 overexpression increased P efficiency by 8.4-16.5% relative to the control. T...Continue Reading

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Citations

Oct 28, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Man-Wah LiHon-Ming Lam

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Methods Mentioned

BETA
RSA
transgenic
PCR
Protein Assay
transgenics
Electrophoresis
RSAs

Software Mentioned

GraphPad Prism
BLAST
WinRhizo
WinQTLCart
AgriGO
Glyma
GraphPad

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