Cesium Toxicity in Arabidopsis
نویسندگان
چکیده
منابع مشابه
Cesium toxicity in Arabidopsis.
Cesium (Cs) is chemically similar to potassium (K). However, although K is an essential element, Cs is toxic to plants. Two contrasting hypotheses to explain Cs toxicity have been proposed: (1) extracellular Cs+ prevents K+ uptake and, thereby, induces K starvation; and (2) intracellular Cs+ interacts with vital K(+)-binding sites in proteins, either competitively or noncompetitively, impairing...
متن کاملCesium Toxicity Alters MicroRNA Processing and AGO1 Expressions in Arabidopsis thaliana
MicroRNAs (miRNAs) are short RNA fragments that play important roles in controlled gene silencing, thus regulating many biological processes in plants. Recent studies have indicated that plants modulate miRNAs to sustain their survival in response to a variety of environmental stimuli, such as biotic stresses, cold, drought, nutritional starvation, and toxic heavy metals. Cesium and radio-cesiu...
متن کاملCesium Inhibits Plant Growth through Jasmonate Signaling in Arabidopsis thaliana
It has been suggested that cesium is absorbed from the soil through potassium uptake machineries in plants; however, not much is known about perception mechanism and downstream response. Here, we report that the jasmonate pathway is required in plant response to cesium. Jasmonate biosynthesis mutant aos and jasmonate-insensitive mutant coi1-16 show clear resistance to root growth inhibition cau...
متن کاملResistance of heather plants (Calluna vulgaris L.) to cesium toxicity
Natural soil Cs concentration is low and non-toxic to plants. The stable isotope Cs is present at concentrations close to 25 μg per g of dry soil [23] and only specially Cs-rich pollucite might cause environmental toxicity of Cs, as in areas of Manitoba [20]. Additionally, two radioisotopes of Cs, Cs and Cs, originating from industry, testing of thermonuclear weapons and from radiation accident...
متن کاملA novel role for methyl cysteinate, a cysteine derivative, in cesium accumulation in Arabidopsis thaliana
Phytoaccumulation is a technique to extract metals from soil utilising ability of plants. Cesium is a valuable metal while radioactive isotopes of cesium can be hazardous. In order to establish a more efficient phytoaccumulation system, small molecules which promote plants to accumulate cesium were investigated. Through chemical library screening, 14 chemicals were isolated as 'cesium accumulat...
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: Plant Physiology
سال: 2004
ISSN: 1532-2548,0032-0889
DOI: 10.1104/pp.104.046672