منابع مشابه
Exogenous melatonin affects photosynthesis in characeae Chara australis
Melatonin was found in the fresh water characeae Chara australis. The concentrations (~4 μg/g of tissue) were similar in photosynthesizing cells, independent of their position on the plant and rhizoids (roots) without chloroplasts. Exogenous melatonin, added at 10 μM to the artificial pond water, increased quantum yield of photochemistry of photosystem II by 34%. The increased efficiency appear...
متن کاملRegulation of Calcium Influx in Chara: Effects of K, pH, Metabolic Inhibition, and Calcium Channel Blockers.
Measurements were made of (45)Ca influx into isolated internodal cells of Chara corallina and also into internodal cells of intact plants. (45)Ca influx was closely related to growth. In rapidly expanding internodal cells, the influx was approximately 1.4 nmol m(-2) s(-1) compared to the influx in mature cells from slow-growing cultures of 0.2 nmol m(-2) s(-1). Isolated internodal cells had inf...
متن کاملClathrin in Chara australis: Molecular Analysis and Involvement in Charasome Degradation and Constitutive Endocytosis
Charasomes are convoluted plasma membrane domains in characean green algae. They are known to form in response to light via secretion of trans-Golgi network (TGN) vesicles and local inhibition of endocytosis. Charasomes are involved in the acidification of their aqueous environment, thereby facilitating photosynthesis-dependent carbon uptake. Charasome formation is reversible to allow cells to ...
متن کاملMetabolomics of a single vacuole reveals metabolic dynamism in an alga Chara australis.
Metabolomics is the most reliable analytical method for understanding metabolic diversity in single organelles derived from single cells. Although metabolites such as phosphate compounds are believed to be localized in different organelles in a highly specific manner, the process of metabolite compartmentalization in the cell is not thoroughly understood. The analysis of metabolites in single o...
متن کاملVacuolar CAX1 and CAX3 influence auxin transport in guard cells via regulation of apoplastic pH.
CATION EXCHANGERs CAX1 and CAX3 are vacuolar ion transporters involved in ion homeostasis in plants. Widely expressed in the plant, they mediate calcium transport from the cytosol to the vacuole lumen using the proton gradient across the tonoplast. Here, we report an unexpected role of CAX1 and CAX3 in regulating apoplastic pH and describe how they contribute to auxin transport using the guard ...
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ژورنال
عنوان ژورنال: Cell Structure and Function
سال: 1984
ISSN: 0386-7196,1347-3700
DOI: 10.1247/csf.9.225