Plant eyes in the dark: How a blue-light photoreceptor senses and functions without light
Plant Science Research Weekly, Upcoming Plantae PresentsLight is both a source of energy for photosynthesis and a key environmental signal that regulates plant growth. Seedlings grown in darkness exhibit elongated hypocotyls and shorter roots, while light promotes shorter hypocotyls and longer roots. Cryptochromes (CRYs), as blue-light receptors, mediate…
UBIQUITIN-SPECIFIC PROTEASE (UBP14) interacts with HY5 to promote photomorphogenesis under dark-to-light conditions
Plant Science Research WeeklyELONGATED HYPOCOTYL5 (HY5) is a transcription factor that regulates about one-third of Arabidopsis genes, affecting growth and development of seedlings through light and hormone signaling. UBIQUITIN-SPECIFIC PROTEASE (UBP14) is a deubiquitinating enzyme that removes ubiquitin from substrate proteins.…
Flip the light switch for protein production
Plant Science Research WeeklyProtein synthesis, modification, and degradation are not only crucial for responding to environmental change, but they also represent significant energy costs for a plant. Energy homeostasis is highly affected by the presence of light. In young seedlings, light enhances translation during the dark-to-light…
SnRK1 and TOR—in a different light
The Plant Cell: In a NutshellSaile et al. explore the role of SnRK1 and TOR in light-dependent seedling development and splicing.
https://doi.org/10.1093/plcell/koad168
Jennifer Saile and Andreas Wachter
Institute for Molecular Physiology (imP), University of Mainz
Background: Plants adjust their development to light…
Inhibition of SIZ1-mediated HLS1 SUMOylation promotes light-induced apical hook opening
The Plant Cell: In a NutshellXiong and Yang et al. explore how plants regulate rapid opening of the apical hook in the light.
By Jiawei Xiong and Dawei Zhang, Ministry of Education Key Laboratory for Bio-Resource and Eco-Environment, College of Life Science, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan…
Green means go: Green light and hypocotyl elongation
The Plant Cell: In a NutshellHao et al. explore the role of green light in plant growth and development.
By Yuhan Hao, Hongtao Liu
National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200031 Shanghai,…
How do brassinosteroids promote etiolation of apical organs in Arabidopsis?
The Plant Cell: In a NutshellWang et al. explore how plants maintain apical etiolation.
By Jiajun Wang (Southwest University, China), Haodong Chen (Tsinghua University, China), Xing Wang Deng (Peking University, China), Ning Wei (Southwest University, China)
Background: Seeds germinate underneath the soil; to help the shoot…
A new link between light and brassinosteroid signaling
The Plant Cell: In a NutshellCao et al. demonstrate that the photomorphogenic repressors BBX28 and BBX29 enhance brassinosteroid signaling to promote hypocotyl elongation and cotyledon closure.
By Jing Cao and Fang Lin
Background: Light signals and brassinosteroids (BRs) are external stimuli and internal cues, respectively,…
KAI2 regulates seedling development by mediating light-induced remodeling of auxin transport (New Phytol)
Plant Science Research WeeklySeed germination is can be described as having two phases depending on light availability, skoto- and photomorphogenesis. Skotomorphogenesis, which occurs while the seed is still buried, is characterized by the elongation of the coleoptile and the inhibition of the root system. When the seed reaches…