Pleiotropic control of glucose and hormone responses by PRL1, a nuclear WD protein, in Arabidopsis

Article Abstract:

Pleiotropic control of hormone and glucose responses by PRL1 in Arabidopsis has been studied. PRL1 is a nuclear WD protein. Mutation of prl1 causes transcriptional derepression of glucose responsive genes. That defines a novel suppressor function in glucose signaling. It increases sensitivity of various plant growth hormones, simulates accumulation of carbohydrates in leaves ad cuts back root elongation. The prl1 mutation localized by T-DNA tagging on Arabidopsis chromosome 4-44 gives hypersensitivity to sucrose and glucose. Functional conservation of PRL1 homologs may exist, based on other eukaryotes. It is indicated by nuclear localization of PRL1 in monkey COS-1 cells.

Genetic aspects, Observations, Homology (Biology), Phototropism, Plant biochemical genetics, Plant cellular control mechanisms, Plant cell regulation

---

Brassinosteroids rescue the deficiency of CYP90, a cytochrome P450, controlling cell elongation and de-etiolation in Arabidopsis

Article Abstract:

The hypocotyl elongation defect of an Arabidopsis cell elongation mutant cpd can be rescued by C23-hydroxylated derivatives of cathasterone, a precursor of the ecdysone-like brassinosteroid hormone brassinolide. Brassinolide treatment also restores the male fertility of the mutant, allowing the production of homozygous seeds. Brassinosteroids also overcome the inhibition of hypocotyl elongation defects caused by the det, cop, fus, dim and axr2 mutations in Arabidopsis.

Arabidopsis, Plant cell development

---

Synergistic activity of a Bacillus thuringiensis delta-endotoxin and a bacterial endochitinase against Spodoptera littoralis larvae

Article Abstract:

Crystal (Cry) proteins of Bacillus thuringiensis isolates have been shown to have an insecticidal effect on larvae of Spodoptera littoralis. This effect is increased in the presence of endochitinases, suggesting the synergism of the alpha-endotoxin Cry and endochitinase. Of the three Cry proteins previously identified, CryIC, CryIE and CryIH, exert the highest level of insecticidal activity. However, for CryIC, large doses are needed to achieve the desired effect.

Bacillus thuringiensis, Endotoxins, Control, Insect pests, Bacterial proteins, Insect control

Similar abstracts:

• Abstracts: Haplotype structure and population genetic inferences from nucleotide-sequence variation in human lipoprotein lipase
• Abstracts: Physiological roles of leupeptin and extracellular proteases in mycelium development of Streptomyces exfoliatus SMF13
• Abstracts: Hemostatic, inflammatory, and fibroblast responses are blunted in mice lacking gelsolin. Thrombin receptor ligation and activation Rac uncap actin filament barbed ends through phosphoinositide synthesis in permeabilized human platelets
• Abstracts: Requisite role of angiopoietin-1, a ligand for the TIE2 receptor, during embryonic angiogenesis. Mice lacking the CNTF receptor, unlike mice lacking CNTF, exhibit profound motor neuron deficits at birth
• Abstracts: Decision phase regulation of streptomycin production in Streptomyces griseus. Depression of streptomycin production by Streptomyces griseus at elevated growth temperature: studies using gene fusions

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.