The abstract is read at the publisher; the summary is JClub's.
PhYAB4 directly activates PhAGL6-2, and this PhYAB4–PhAGL6-2 pathway is linked to lip-related organ curvature in Paphiopedilum henryanum, with curvature divergence starting at Stage 4.
- Why it matters: The molecular control of how the orchid lip forms its curvature is unclear, especially in Paphiopedilum mutants where lip-like structures diverge during development.
- What they did: Using Paphiopedilum henryanum and its Type A peloric mutant, the study combined stage-specific transcriptome/expression profiling with virus-induced gene silencing, and showed PhYAB4 binds an AGTGTG motif in the PhAGL6-2 promoter to activate transcription.
- The result: Silencing PhAGL6-2 or PhYAB4 altered perianth curvature, with PhYAB4 knockdown reducing PhAGL6-2 expression and producing stronger curvature, lip outgrowths, and partial floral symmetry disruption.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.