Journal
NEW PHYTOLOGIST
Volume 216, Issue 2, Pages 519-535Publisher
WILEY
DOI: 10.1111/nph.14197
Keywords
CorAP1; Cornus; CorTFL1; evolutionary development; gene expression; inflorescence; in situ hybridization; quantitative real-time polymerase chain reaction (qRT-PCR)
Categories
Funding
- CSC scholarship [201306320051]
- National Science Foundation [IOS-1024629]
- Direct For Biological Sciences
- Division Of Environmental Biology [1542841] Funding Source: National Science Foundation
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1444567, 1024629] Funding Source: National Science Foundation
Ask authors/readers for more resources
TFL1-, APT- and LFY-like genes are known to be key regulators of inflorescence development. However, it remains to be tested whether the evolutionary modifications of inflorescence morphology result from shifts in their expression patterns. We compared the spatiotemporal expression patterns of CorTFL1, CorAP1 and CorLFY in six closely related Cornus species that display four types of closed inflorescence morphology using quantitative real-time polymerase chain reaction (qRT-PCR) and RNA in situ hybridization. Character mapping on the phylogeny was conducted to identify evolutionary changes and to assess the correlation between changes in gene expression and inflorescence morphology. Results demonstrated variation of gene expression patterns among species and a strong correlation between CorTFL1 expression and the branch index of the inflorescence type. Evolutionary changes in CorTFL1 and CorAP1 expression co-occurred on the phylogeny with the morphological changes underpinning inflorescence divergence. The study found a clear correlation between the expression patterns of CorTFL1 and CorAP1 and the inflorescence architecture in a natural system displaying closed inflorescences. The results suggest a role for the alteration in CorTFL1 and CorAP1 expression during the evolutionary modification of inflorescences in Cornus. We propose that a TEL1-like and AP1-like gene-based model may explain variation of closed inflorescences in Cornus and other lineages.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available