Project description:Grape berry development is a highly coordinated, intricate and complex process with many morphological, biochemical and physiological changes occurring during the ripening process. Equally, ripening is an organoleptic characteristic linked to fruit development. The fruits Seedless (FS) and Victoria (VT) grape varieties exhibit many morphological and phytochemical differences, but genetic mechanisms underlying them remain poorly explored. Herein, we comparatively analysed the phenotypic and transcriptomic patterns of Victoria (VT) and Flame Seedless (FS) grape varieties during berry development. We studied the physiological analysis and transcriptomic profiles sequencing were performed at four berry developmental stages time-points (40, 50, 60 and 80 DPA). Notably, the VT variety berry size was comparatively larger to the FS variety. At maturity, 80DPA, the FS soluble solids were 61.8% higher than VT. Further, a total of 4889 and 2802 DEG’s were identified from VT and FS 40 DPA to 80 DPA development stages, respectively. 1386 DEGs were common in the two varieties. GO analysis identified Cysteine biosynthetic process, response to red light, chlorophyll binding, polysaccharide biosynthetic process and chloroplast thylakoid membrane as some of the dominant terms under the biological processes, molecular function and cellular component categories.
Project description:Changes in gene expression during berry development during a grape growing season were analysed. The effect on gene expression of different viticultural practises during grape berry development was investigated in this study by comparing two irrigation methods (standard versus prolonged deficit irrigation). Grape berries were collected and pooled on a weekly basis to obtaining a developmental series comprising of 17 developmental stages from flowering until harvest across the grape growing season for both standard and prolonged deficit irrigated vines. Gene expression patterns during development and between pruning treatments were obtained. Keywords: Time course, developmental series and treatments
Project description:Comparison of freshwater tolerant (accession CCAP 1310/196, origin Hopkins River Falls, Victoria, Australia) and strictly marine strain (accession CCAP 1310/4, origin San Juan de Marcona, Peru) of E. siliculosus under different salinites
