Trehalose is a nonreducing sugar used as a reserve carbohydrate and stress protectant in a variety of organisms. While higher plants typically do not accumulate high levels of trehalose, they encode large families of putative trehalose biosynthesis genes. Trehalose biosynthesis in plants involves a two-step reaction in which trehalose-6-phosphate (T6P) is synthesized from UDP-glucose and glucos...

The growth and persistence of rhizobia and bradyrhizobia in soils are negatively impacted by drought conditions. In this study, we used genome-wide transcriptional analyses to obtain a comprehensive understanding of the response of Bradyrhizobium japonicum to drought. Desiccation of cells resulted in the differential expression of 15 to 20% of the 8,453 [corrected] B. japonicum open reading fra...

Trehalose, as a non-reductive disaccharide, plays vital role in plant growth and development resistance to abiotic stress. Trehalose-6-phosphate synthase (TPS) is key enzyme the synthesis mechanism of trehalose TPS1 genes play crucial response stress plants. However, it has rarely been reported that CaTPS1 responds cold salt stresses pepper. To verify function stresses, was silenced by virus-in...

Seed germination is essential for direct seeding in rice. It has been demonstrated that trehalose-6-phosphate phosphatase 1 (OsTPP1) plays roles improving yield and stress tolerance In this study, the of OsTPP1 on seed rice were investigated. The tpp1 mutant germinated slower than wild-type (WT), which can be restored by exogenous trehalose. seeds showed higher ABA content compared with WT seed...

Plants sense and respond to changes in carbon and nitrogen metabolites during development and growth according to the internal needs of their metabolism. Sugar-sensing allows plants to switch off photosynthesis when carbohydrates are abundant. These processes involve regulation of gene and protein activity to allow plants the efficient use of energy storage. Besides being a key element in carbo...

It has been reported previously that Escherichia coli K-12 carries an amber mutation that prevents osmotic stress-dependent accumulation of trehalose (M. L. Rod, K. Y. Alam, P. R. Cunningham, and D. P. Clark, J. Bacteriol. 170:3601-3610, 1988). We report that E. coli K-12 and W1485 (sup0) accumulated trehalose but that they required a higher osmotic strength in the growth medium than that requi...

Trehalose, which plays important roles in resistance to abiotic stresses and preservation of biological activity plants, is synthesized by two key enzymes, trehalose-6-phosphate synthase (TPS) phosphatase (TPP). Therefore, the expressions TPS TPP genes directly affect trehalose synthesis stress plants. In this study, CkTPS CkTPP from Caragana korshinskii were identified, role adaptation desert ...

BACKGROUND The trehalose synthetic pathway is present in bacteria, fungi, plants and invertebrate animals, but is absent in vertebrates. This disaccharide mainly functions as a stress protectant against desiccation, heat, cold and oxidation. Genes involved in trehalose synthesis have been observed in apicomplexan parasites, but little was known about these enzymes. Study on trehalose synthesis ...

Trehalose and its metabolism have been demonstrated to play important roles in control of plant growth, development, and stress responses. However, direct genetic evidence supporting the functions of trehalose and its metabolism in defense response against pathogens is lacking. In the present study, genome-wide characterization of putative trehalose-related genes identified 11 SlTPSs for trehal...