Foliar dewdroplet–induced redox cascades promote early flowering in <i>Brassicaceae</i> plants
Abstract
Atmospheric water inputs such as dew are often overlooked in plant biology. We show that foliar dewdrops act as biochemical microreactors that trigger flowering in Arabidopsis thaliana , a small plant from the mustard family ( Brassicaceae ). These droplets generate reactive oxygen species that induce intracellular nitric oxide accumulation, initiating a redox cascade that suppresses the biosynthesis of abscisic acid, which contributes to the regulation of flowering time. This occurs via S-nitrosylation-mediated activation of histone deacetylase 19, which silences AAO3 and ABA2 . Analysis of over 12 million field records across the Brassicaceae family reveals a global correlation between dew point temperature and flowering time. These findings identify dewdrop chemistry as an unrecognized environmental cue that regulates developmental timing in plants.
Article Details
Journal Info
Proceedings of the National Academy of Sciences
National Academy of Sciences
Authors (16)
Yu Zheng
Bolei Chen
Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences
Chun Bao
Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, School of Environment and Health, Jianghan University
Yu Xia
Changli Zeng
Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, School of Environment and Health, Jianghan University
Maoyong Song
Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences
Jianbo Shi
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences
Ligang Hu
State Key Laboratory of Environmental Chemistry and Toxicology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences
Yongguang Yin
Laboratory of Environmental Nanotechnology and Health Effect, Research Center for Eco-Environmental Sciences
Xiaoyun Cui
Institute of Plant Science Paris-Saclay, CNRS, INRA, Université Paris-Saclay
Juline Auverlot
Laboratoire Génome et Développement des Plantes, CNRS, Université Perpignan
Jean-Philippe Reichheld
Laboratoire Génome et Développement des Plantes, CNRS, Université Perpignan
Guibin Jiang
State Key Laboratory of Environmental Chemistry and Toxicology, Research Center for Eco-Environmental Sciences
Yong Liang
Daoxiu Zhou
Institute of Plant Science Paris-Saclay, CNRS, INRA, Université Paris-Saclay
Richard N. Zare
Stanford University , , , ,