Dosage imbalance of B- and C-class genes causes petaloid-stamen relating to F₁ hybrid variation.

ABSTRACT:

Background

Great advances have been achieved in our understanding of flower development and evolution since the establishment of the ABC model. However, it remains a challenge to define the exact context of organ identity in the component interactions of the ABC model.

Results

Through hybridization, we detected a homeotic mutant in Petrocosmea (Gesneriaceae) uniquely displayed by the 'petaloid-stamen' in the third whorl with petal identity. Comparative Real-time PCR analyses demonstrate that both two B-class genes DEF2 and GLO are excessively expressed while the transcripts of the C-class gene PLE are reduced in the third floral whorl in the mutant compared to that in the wild-type F₁ hybrids. Further allele-specific expression (ASE) analyses indicate that an alle

SUBMITTER: Liu J 

PROVIDER: S-EPMC6286610 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature