Project description:Closed terminal buds of apple trees (Malus x domestica Borkh, Royal Gala and Castel Gala varieties) grown in commercial orchards were harvested during autumn and winter and exposed to cold treatments
Project description:Based on sensorial analysis over 4 years, 6 apple genotypes with contrasted fruit texture (mealy or not) were selected among a progeny. Apple samples were collected at 100 days after flowering (100 DAF), harvest (H), after 2 and 4 months of cold storage (60DAH and 120DAH respectively). 6 apple hybrids were analysed in dye-switch. Biological replicates are fruits from 2 to 4 different harvest years. Each mealy hybrid was compared to a non-mealy hybrid from the same harvest year in 12 dye-swap 3 pairs at 4 four time points).
Project description:Root and leave samples of 4 different apple genotypes were investigated in order to analyse the gene expression after infection with Apple Replant Disease (ARD). All genotypes were cultivated in ARD-infected soil and gamma-irradiated (disinfected) soil in the greenhouse for 7 days. The ARD soil originated from two different orchards representing two different soil compositions. After 7 days root tissue was collected from each plant and used for the subsequent gene expression analysis. This work was part of the project BonaRes-ORDIAmur funded by the German Federal Ministry of Research and Education within the frame of the program BonaRes (grant no. 031B0025B). It was also funded by the German Research Foundation (DFG) via the research training group GRK1798 "Signaling at the Plant-Soil Interface" and a grant to BL and LB (BE 1174/19-1).
Project description:Based on sensorial analysis over 4 years, 6 apple genotypes with contrasted fruit texture (mealy or not) were selected among a progeny. Apple samples were collected at 100 days after flowering (100 DAF), harvest (H), after 2 and 4 months of cold storage (60DAH and 120DAH respectively).
Project description:Closed terminal buds of apple trees (Malus x domestica Borkh, Royal Gala and Castel Gala varieties) grown in commercial orchards were harvested during autumn and winter and exposed to cold treatments 18 biological samples, consisting of 9 pairs of replicates, were analysed in dye-swap. Samples are whole closed terminal buds. Biological replicates are buds from 2 different harvest year subjected to similar cold treatments. Samples with contrasting dormancy status in the same harvest year were compared in 8 dye-swap. Most samples were hybridized more than once in different combinations
Project description:Apple is a woody tree in the Rosaceae family, genus Apple. It has been widely reported that MYBs are critical regulators for red color of apple peel by activating the expression of anthocyanin biogenesis genes. However, it is still not clear what is the molecular mechanism for the yellow color of apple peel. In order to investigate key genes and metabolites responsible for yellow coloration of apple peel, three strains of apples, "Venus Gold (Ype)" with yellow peel, "Yanfu8 (Mpe)" with medium red peel, and "Red love" with dark red peel, were selected in this study. Transcriptomic and metabolomic profiles were obtained for the peels of the three apple strains, respectively. After analyzing the transcriptomic profiles, our results suggest that DFR and LAR1 are two critical genes for the yellow color of Ype peel. Analysis of metabolomic profiles revealed that the abundances of Catechin and Epicatechin in Ype peel was higher than that of Rpe, indicating an important reason for the yellow color of Ype peel. Furthermore, when comparing volatile metabolites from Ype, Mpe and Rpe, hundreds of volatile metabolites show significantly differently abundances, suggesting that apples with different peel colors have different odors. In summary, our results provide new insights into the yellow coloration for the peels of some apple cultivars.
Project description:in order to understand the role of phloems of apple dwarfing rootstocks,and investigated the expression differences of dwarfing and vigorous apple stocks in the phloem tissue at active growing stage. The phloem tissue at active growing stage(60 DABB(days after buds break) of three apple dwarfing rootstocks including M9,B9,A1d(a partial GA insensitive mutant of Malus hupensis)and two vigorous apple rootstock PYTC ( WT of Malus hupensis) and M. sylvestris were sampled and underwent RNA-Seq analysis.
Project description:In order to understand the role of phloems of apple dwarfing rootstocks,and investigated the expression differences of dwarfing and vigorous apple stocks in the bud break stage, The phloem tissue at bud break stage(0 DABB(days after buds break) of three apple rootstocks including A1d(a partial GA insensitive mutant of Malus hupehensis ),WT Malus hupehensis and were QZ1(a hybrid of Malus hupensis and a Cylindrical apple variety) were sampled and underwent RNA-Seq analysis.