Microtubules of Guard Cells are Light Sensitive
نویسندگان
چکیده
منابع مشابه
Actin filaments of guard cells are reorganized in response to light and abscisic acid.
We recently showed that treatment with actin antagonists perturbed stomatal behavior in Commelina communis L. leaf epidermis and therefore suggested that dynamic changes in actin are necessary for signal responses in guard cells (M. Kim, P.K. Hepler, S.O. Eun, K.-S. Ha, Y. Lee [1995] Plant Physiol 109: 1077-1084). Here we show that actin filaments of guard cells, visualized by immunofluorescenc...
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Guard cells are able to sense a multitude of environmental signals and appropriately adjust the stomatal pore to regulate gas exchange in and out of the leaf. The role of the microtubule cytoskeleton during these stomatal movements has been debated. To help resolve this debate, in vivo stomatal aperture assays with different microtubule inhibitors were performed. We observed that guard cells ex...
متن کاملGuard cells
What are guard cells? A pair of guard cells surrounds each stoma on the leaf surface. Stomata are important because they regulate the uptake of CO 2 from the atmosphere for photosynthesis and also the loss of water vapour from the plant during transpiration. The aperture of the stomatal pore is controlled by the two guard cells. When the guard cells are fully turgid the pore gapes open, whereas...
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Stomatal openings can be stimulated by light through two signalling pathways. The first pathway is blue light specific and involves phototropins, while the second pathway mediates a response to photosynthetically active radiation (PAR). This second pathway was studied with the use of albino Vicia faba plants and variegated leaves of Chlorophytum comosum. Treatment of V. faba with norflurazon (N...
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ژورنال
عنوان ژورنال: Plant and Cell Physiology
سال: 2004
ISSN: 1471-9053,0032-0781
DOI: 10.1093/pcp/pch067