Chlorella triggers stomatal closure mediated by NADPH oxidase and improves instantaneous water use efficiency inVicia faba

• DOI: 10.4161/psb.29078
• Publication Date: 2014-05-06T14:29:12Z
• Authors: Yan Li; Shan-Shan Xu; Jing Gao; Sha Pan; Gen-Xuan Wang
• Keywords: Water Use Efficiency

Stomatal closure induced by live microbes and microbe-associated molecular patterns (MAMPs) has been associated with early defense responses of plants. Chlorella is a unicellular autotrophic microorganism that can synthesize many bioactive substances positive effects on humans, animals However, its stomatal movement instantaneous intrinsic water use efficiency (WUEi) in plants have not explored yet. Our present work showed application to isolated epidermal peels Vicia faba dose-and time-dependent manner. Pharmacological study revealed the Chlorella-triggered was mainly mediated reactive oxygen species (ROS) production via NADPH oxidase. Additionally, exogenous optimal concentrations suspension caused an obvious reduction leaf transpiration rate (E) without parallel net photosynthetic (Pn), favoring improvement WUEi faba. The chlorophyll fluorescence content analysis further indicated had no plant reactions center after short-term foliar application.