Comparative RNA-sequencing-based transcriptome profiling of buds from profusely flowering 'Qinguan' and weakly flowering 'Nagafu no. 2' apple varieties reveals novel insights into the regulatory mechanisms underlying floral induction.

ABSTRACT:

Background

Floral induction is an important stage in the apple tree life cycle. In 'Nagafu No. 2', which was derived from a 'Fuji' bud sport, flower bud formation is associated with serious problems, such as fewer and inferior flower buds, a long juvenile phase, and an alternate bearing phenotype. Moreover, the molecular regulatory mechanisms underlying apple floral induction remain unknown. To characterize these mechanisms, we compared the RNA-sequencing-based transcriptome profiles of buds during floral induction in profusely flowering 'Qinguan' and weakly flowering 'Nagafu No. 2' apple varieties.

Results

Genes differentially expressed between the buds of the two varieties were mainly related to carbohydrate, fatty acid, and lipid pathways. Additionally, the steady up-regu

SUBMITTER: Chen X 

PROVIDER: S-EPMC6303880 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature