AI Article Synopsis
- Plants regulate carbon dioxide uptake and water loss through stomatal openings, controlled by the activity of H(+)-ATPases in guard cells.
- The study focuses on a gene called PATROL1 in Arabidopsis that facilitates the movement of a key H(+)-ATPase, AHA1, to the plasma membrane.
- Overexpression of PATROL1 leads to increased stomatal openings, improving CO2 assimilation and promoting plant growth.
Article Abstract
Plants control CO2 uptake and water loss by modulating the aperture of stomata located in the epidermis. Stomatal opening is initiated by the activation of H(+)-ATPases in the guard-cell plasma membrane. In contrast to regulation of H(+)-ATPase activity, little is known about the translocation of the guard cell H(+)-ATPase to the plasma membrane. Here we describe the isolation of an Arabidopsis gene, PATROL1, that controls the translocation of a major H(+)-ATPase, AHA1, to the plasma membrane. PATROL1 encodes a protein with a MUN domain, known to mediate synaptic priming in neuronal exocytosis in animals. Environmental stimuli change the localization of plasma membrane-associated PATROL1 to an intracellular compartment. Plasma membrane localization of AHA1 and stomatal opening require the association of PATROL1 with AHA1. Increased stomatal opening responses in plants overexpressing PATROL1 enhance the CO2 assimilation rate, promoting plant growth.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3731666 | PMC |
| http://dx.doi.org/10.1038/ncomms3215 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!