Novel loci fsd6.1 and Csgl3 regulate ultra-high fruit spine density in cucumber

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Kailiang BoXing-Fang Gu

Abstract

Quantitative Trait Loci (QTL) analysis of multiple populations in multiple environments revealed that the fsd6.2 locus, which includes the candidate gene Csgl3, controls high fruit spine density in natural cucumbers. GWAS identified a novel locus fsd6.1, which regulates ultra-high fruit spine density in combination with Csgl3, and evolved during cucumber domestication. Fruit spine density, a domestication trait, largely influences the commercial value of cucumbers. However, the molecular basis of fruit spine density in cucumber remains unclear. In this study, four populations were derived from five materials, which included three with low fruit spine density, one with high fruit spine density, and one with ultra-high fruit spine density. Fruit spine densities were measured in 15 environments over a span of 6 years. The distributions were bimodal suggesting that fruit spine density is controlled by a major-effect QTL. QTL analysis determined that the same major-effect QTL, fsd6.2, is present in four populations. Fine mapping indicated that Csgl3 is the candidate gene at the fsd6.2 locus. Phylogenetic and geographical distribution analyses revealed that Csgl3 originated from China, which has the highest genetic diversity for frui...Continue Reading

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Citations

Sep 26, 2020·Frontiers in Plant Science·Encarnación AguadoManuel Jamilena
Feb 13, 2021·The Plant Journal : for Cell and Molecular Biology·Yaqi ZhangXingwang Liu
Jun 29, 2021·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Kiros GebretsadikKailiang Bo

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Methods Mentioned

BETA
PCR
electrophoreses

Software Mentioned

R
R package qqman
Clustal Omega
qtl
SAS

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