Signal transduction and ion channels in guard cells
نویسندگان
چکیده
منابع مشابه
Signal transduction and ion channels in guard cells.
Our understanding of the signalling mechanisms involved in the process of stomatal closure is reviewed. Work has concentrated on the mechanisms by which abscisic acid (ABA) induces changes in specific ion channels at both the plasmalemma and the tonoplast, leading to efflux of both K+ and anions at both membranes, requiring four essential changes. For each we need to identify the specific chann...
متن کاملIon channels and signal transduction in lymphocytes.
T and B lymphocytes play fundamental and diverse roles in the immune response, which include recognition of antigens, secretion of lymphokines and antibodies, and killing of foreign or virus-infected cells. Ionic fluxes associated with lymphocyte activation, mitogenesis, and volume regulation have been studied extensively in cell suspensions (for reviews, see 67, 103, 124, Grinstein & Foskett, ...
متن کاملEditorial: Signal Transduction in Stomatal Guard Cells
During adaptation of plants to water stress/drought, the tiny pores on the leaf surface, called “stomata,” play a very important role. Stomatal movements can modulate the entry/exit of not only CO2/water (Lawson and Blatt, 2014) but also microbial pathogens (Agurla et al., 2014; Arnaud and Hwang, 2015). The stomatal opening/closure is brought out by changes in the turgor of guard cells. The abi...
متن کاملGuard Cell Signal Transduction.
Guard cells surround stomatal pores in the epidermis of plant leaves and stems. Stomatal pore opening is essential for CO2 influx into leaves for photosynthetic carbon fixation. In exchange, plants lose over 95% of their water via transpiration to the atmosphere. Signal transduction mechanisms in guard cells integrate hormonal stimuli, light signals, water status, CO2, temperature, and other en...
متن کاملRole of Calcium in Signal Transduction Guard Cells of Commelina
The role of cytosolic Ca2+ in signal transduction in stomatal guard cells of Commelina commonis was investigated using fluorescence ratio imaging and photometry. By changing extracellular K+, extracellular Ca2+, or treatment with Br-A23187, substantive increases in cytosolic Ca2+ to over 1 micromolar accompanied stomatal closure. The increase in Ca2+ was highest in the cytoplasm around the vacu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences
سال: 1998
ISSN: 0962-8436,1471-2970
DOI: 10.1098/rstb.1998.0303