Genetic analysis of the Lf1 gene that controls leaflet number in soybean

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Soon-Chun JeongDong Nyuk Bae

Abstract

A high-resolution genetic map that was constructed for the Lf1 -residing region will provide valuable information for map-based cloning and genetic improvement efforts in soybean. Changes in leaf architecture as photosynthesis factories remain a major challenge for the improvement of crop productivity. Unlike most soybeans, which have compound leaves comprising three leaflets, the soybean Lf1 mutant has a high frequency of compound leaves with five leaflets in a partially dominant manner. Here, we generated a fine genetic map to determine the genetic basis of this multifoliolate leaf trait. A five-leaflet variant Dusam was found in a recently collected landrace cultivar. Phenotypic data were collected from the F2 population of a cross between the Dusam and three-leaflet cultivar V94-5152. The mapping results generated using public markers indicated that the five-leaflet determining gene in Dusam is an allele of the previously studied Lf1 gene on chromosome 8. A high-resolution map delimited the genomic region controlling the leaflet number trait to a sequence length of 49 kb. AP2 domain-containing Glyma.08g281900 annotated in this 49 kb region appeared to be a strong candidate for the Lf1-encoding gene, as members of the AP2-ty...Continue Reading

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Citations

Oct 28, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Man-Wah LiHon-Ming Lam
May 13, 2020·Nature Plants·Liangliang HeJianghua Chen

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Methods Mentioned

BETA
PCR
genotyping

Software Mentioned

Primer3
Phytozome browser
BLAST
CarthaGene
Minitab
RepeatMasker

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