Contribution to the diversity of soybean germplasm withinsights on pathogenicity factors during the interaction with Botrytis cinerea
Year: 2017
Type: dissertation
Abstract: Soybean (Glycine max) is a specie that has fundamental importance to the Brazilian economy \nand the production area has been largely increased during the past few decades. The \nimportation of such commodity represents a large share of the trade balance, and its uses are \nspreaded for several industrial segments. In this study, two distincts aspects were approached \nrelated to this species, the plant-pathogen interaction using a necrotrophic fungi (Botrytis \ncinerea ) and the genetic diversity in a group of commonly used soybean genotypes. The plant \npathogen interaction study was done to reach a better understanding of the effect of soybean \ndomestication on the pathogen virulence. The genetic diversity evaluation had as a main goal \ndetermine the range of the genetic base in a soybean breeding set. The plant pathogen \ninteraction study was performed using a detached leaves assay with12 genotypes from the \nNAM Population Project and 98 isolates of B. cinerea. In this assay, significant variability \nfor lesion size was found between domestication groups. Futhermore, pathogen genome \nregions associated with virulence were detected. The genetic diversity was done with 35 SSR \nmarkers (Simple sequence repeat) with 77 soybean genotypes. Overall, the germplasm \nshowed low genetic diversity what represents a obstacle to the progression of selection gains \nthrough breeding.
Author: Gwinner, Raoni
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W2906489964