Project description:To identify differently expressed proteins in tuber tissue of potato cultivars and diploid interspecific hybrids of Solanum, differing in resistance to Dickeya solani, comparative analysis was performed. Two highly resistant (Bea and Humalda) and three susceptible (Irys, Katahdin, Ulster Supreme) potato cultivars, as well as the highly resistant (DG 00-270) and the susceptible (DG 08-305) diploid clones, were studied. DG 00-270 exhibited higher resistance to D. solani than the cultivars Bea and Humalda. Proteins were extracted from wounded potato tubers inoculated with bacteria at an early symptomatic phase and from controls, i.e., intact tubers and wounded mock-inoculated tubers. Protein profiles were analyzed using nano-liquid chromatography coupled with tandem mass spectrometry (LC-MS-MS/MS).
Project description:To learn more about the role of FRUITFULL (FUL), in pistil/silique development, we performed a ChIP-seq experiment to identify direct targets of FUL in the pistil/silique.
Project description:Potato genotypes from a diploid potato population were divided in two groups based on their response to Potato virus A (PVA). Plants exhibiting hypersensitive response were compared to plants exhibiting non-necrotic response (i.e. blocking virus movement without cell death).<br>The comparisons were made before inoculation and 12 and 24 hours post-inoculation.<br>
Project description:We prepared QTL map of tuber starch content in potato diploid population. Then, we examined expression level of enzyme ADP-glucose pyrophosphorylase (AGPase) taking part in starch biosynthesis (marker AGPaseS-a). Based on starch content and AGPaseS-a expression, we constructed four bulks prepared from RNA isolated from tubers of F1 individuals H1 and H2 consisted of high TSC genotypes, bulks L1 and L2 were made of low TSC genotypes. Plants in bulks H1 and L1 strongly expressed AGPaseS-a, whereas those in bulks H2 and L2 exhibited low levels. Then we used RNA-seq technology for selection of genes displaying differential expression between RNA pools. For selected candidate genes we mapped expression QTL (e-QTL) and found eQTL of eAGPaseS-a and ePGRCRURSE5, were close to the corresponding loci of (AGPaseS-a) and the 12S globulin cruciferin gene (PGCRURSE5). We concluded that the cruciferin gene PGRCRURSE5 is a novel candidate involved in the regulation of starch content in potato tubers and suggests that cruciferin may be a novel PTST protein in potato tubers.
Project description:We report the transcriptional response to Colorado potato beetle herbivory in leaves of the highly beetle resistant Solanum chacoense diploid line USDA8380-1 (80-) and a susceptible F2 individual (EE501F2_093) derived from a cross between 80-1 and a beetle susceptible line S. chacoense M6. Sampling tissue in a time course during adult Colorado potato beetle feeding provides novel insight to the transcriptomic defense response to this important pest.
Project description:BSA pooling experiment for methionine content in a segrating diploid potato population (CxE). RNA of constrasting individuals for methionine content are pooled together based on their tuber methionine content and marker association with either or both of the identified QTLs for methionine content
