Isolation of a Leucoanthocyanidin Dioxygenase (LDOX) Gene from a Spray-type Chrysanthemum (Dendranthema × grandiflorum) and Its Colored Mutants

作者: Geung-Joo Lee , Si-Yong Kang , Sung Jin Chung , Hye Jung Lee , Dong Sub Kim

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摘要: A full-length cDNA and genomic DNA of a leucoanthocyanidin dioxygenase (DgLDOX) gene was isolated from the petals chrysanthemum ‘Argus’, comparative features among three flower color mutants derived gamma-ray mutagenesis were characterized. The coding region 1068 bp translated into 356 amino acids accordingly. size 1346 for while revealed ranges 1363 to 1374 bp. single intron between two exons DgLDOX found, which 112 but 128 or 137 mutants, indicating that insertion in occurred during mutagenesis. blot analysis presenting as copy genome. expressed both ‘Argus’ light-pink purple (AM1 AM3) had very weak expression only white mutant (AM2). results demonstrated variations might be associated with changes acid moieties fragment insertions gene, potentially resulted less colored mutant.

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