May 8, 2015

Integration of experiments across diverse environments identifies the genetic determinants of variation in Sorghum bicolor seed element composition

BioRxiv : the Preprint Server for Biology
Nadia ShakoorIvan Baxter

Abstract

One sentence summary High-throughput measurements of element accumulation and genomewide association analysis across multiple environments identified novel alleles controlling seed mineral accumulation in Sorghum bicolor . Abstract Seedling establishment and seed nutritional quality require the sequestration of sufficient mineral nutrients. Identification of genes and alleles that modify element content in the grains of cereals, including Sorghum bicolor , is fundamental to developing breeding and selection methods aimed at increasing bioavailable mineral content and improving crop growth. We have developed a high throughput workflow for the simultaneous measurement of multiple elements in Sorghum seeds. We measured seed element levels in the genotyped Sorghum Association Panel (SAP), representing all major cultivated sorghum races from diverse geographic and climatic regions, and mapped alleles contributing to seed element variation across three environments by genome-wide association. We observed significant phenotypic and genetic correlation between several elements across multiple years and diverse environments. The power of combining high-precision measurements with genome wide association was demonstrated by implementing...Continue Reading

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Mentioned in this Paper

Gene Polymorphism
Study
Manganese
Sorghum bicolor
Grains
Genome
Genes
Calcium
Environment
Nickel

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