WEREWOLF, a MYB-related protein in Arabidopsis, is a position-dependent regulator of epidermal cell patterning

Article Abstract:

A novel gene, WEREWOLF (WER), a MYB-related protein in Arabidopsis, is discussed. It is a position-dependent regulator of epidermal cell patterning. Study results suggest a simple model which would explain specification of the two root epidermal cell types and give insight into molecular mechanisms that control cell patterning.

Usage, Plant genetics, Roots (Botany), Cytochemistry, Chromosome mapping, Cell differentiation, Cell aggregation, Root hairs, Plant chromosomes

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Opposing effects of Ras on p53: transcriptional activation of mdm2 and induction of p19(sup)ARF

Article Abstract:

Regulation of p53 tumor suppressor gene is discussed in the contexts of the Mdm2 and Ras genes which show opposing effects on p53. Research reveals that the Ras-driven Raf/MEK/MAP kinase pathway suppresses p53 during tumor development through Raf's activation of the Mdm2's inhibitor p19(sup)ARF.

Japan, Israel, Cellular signal transduction, Genetic transcription, Transcription (Genetics), Tumor suppressor genes

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Arabidopsis MAP kinase 4 negatively regulates systemic acquired resistance

Article Abstract:

Research reveals that plant disease resistance is mediated by MAP kinase 4 (MPK4) activity and its inactivation by transposons result in the development of systemic acquired resistance, elevated salicylic acid levels, and resistance to virulent pathogens.

United Kingdom, Denmark, Plants, Plants (Organisms), Metabolic regulation, Growth, Growth (Physiology), Growth regulators, Diseases and pests, Growth (Plants), Plant growth

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