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Candidates responsible for dwarf pear phenotype as revealed by comparative transcriptome analysis
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Candidates responsible for dwarf pear phenotype as revealed by comparative transcriptome analysis
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Candidates responsible for dwarf pear phenotype as revealed by comparative transcriptome analysis
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Journal Article
Candidates responsible for dwarf pear phenotype as revealed by comparative transcriptome analysis
2019
Overview
Dwarfism is an important character in fruit production for intensive cultivation and effective orchard management. We previously located a single dominant gene at a narrow region on scaffold00074 of pear based on simple sequence repeat markers. To identify the gene and fully understand the different developmental processes, we conducted a transcriptomic analysis of the young apical stem between dwarf and standard pears. A total of 2170 differentially expressed genes (DEGs), of which 987 were down-regulated and 1183 were up-regulated, were determined. These DEGs were mainly involved in ribosome biogenesis, phenylpropanoid biosynthesis, photosynthesis, porphyrin and chlorophyll metabolism and DNA replication. Subsequently, a classical arabinogalactan protein 7-like gene (PCP021014) and a protein WVD2-like 7 gene (PCP021015) were identified as the most likely candidates for the
PcDw
locus on the basis of the DEGs and annotation of scaffold00074. Furthermore, we performed qRT-PCR to validate the expression patterns of 12 DEGs associated with the dwarf character. Our results provide a systemic viewpoint into the complex regulatory networks between the dwarf and standard pear phenotypes.
Publisher
Springer Netherlands,Springer Nature B.V
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