Guard-cell phytochromes impact seedling photomorphogenesis and rosette leaf morphology
- Michigan State Univ., East Lansing, MI (United States)
Using a previously established transgenic approach to inactivate phytochrome chromophore synthesis in specific organs or tissues, we used a guard cell-specific promoter to induce phytochrome deficiencies in guard cells of Arabidopsis thaliana. Analyses of multiple homozygous lines depleted of phytochromes in stomatal guard cells indicated elongated hypocotyls specifically in red and far-red growth conditions. Furthermore, rosette leaves of adult plants with guard cell-specific phytochrome deficiencies showed enhanced serration compared to the wild-type Col-0 parent. Thus, we demonstrate that guard cell-localized phytochromes impact the inhibition of hypocotyl elongation, as well as leaf margin morphology of adult rosette leaves in A. thaliana.
- Research Organization:
- Michigan State Univ., East Lansing, MI (United States). MSU-DOE Plant Research Laboratory
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- FG02-91ER20021
- OSTI ID:
- 1902064
- Journal Information:
- microPublication Biology, Vol. 2022, Issue 1; ISSN 2578-9430
- Publisher:
- Caltech LibraryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Phytochrome-induced SIG2 expression contributes to photoregulation of phytochrome signalling and photomorphogenesis in Arabidopsis thaliana
Activation tagging of Arabidopsis