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We identified two phenylquinazoline compounds in a large-scale screening for cytokinin antagonists in yeast expressing the Arabidopsis cytokinin receptor cytokinin response 1/histidine kinase 4 (CRE1). After chemical modifications, we obtained compound S-4893, which non-competitively inhibited...
An electron flow in addition to the major electron sinks in C 3 plants (both photosynthetic carbon reduction (PCR) and photorespiratory carbon oxidation (PCO) cycles) is termed an alternative electron flow (AEF) and functions in the chloroplasts of leaves. The water–water cycle (WWC;...
The FUSCA3 (FUS3) transcription factor is considered a master regulator of seed maturation because a wide range of seed maturation events are impaired in its defective mutant. To identify comprehensively genes under the control of FUS3, two types of microarray experiments were performed. First,...
Methylation of biologically active molecules is achieved by methyltransferases (MTases). MTases can act on proteins through N - or O -carboxylmethylation reactions. Methylation of lysine and glutamic acid residues was recently described on the N-terminal tail of At PIP2;1, a plasma membrane...
Lateral root primordia are initiated by anticlinal division of cells in the pericycle and are constructed through an ordered set of cell divisions. At the completion of the development of the primordium, cell division ceases, after which the lateral root meristem is activated. In Arabidopsis,...
Plants overcome water deficit conditions by combining molecular, biochemical and morphological changes. At the molecular level, many stress-responsive genes have been isolated, but knowledge of their physiological functions remains fragmentary. Here, we report data for RD20 , a stress-inducible...
Proteins abundant in seeds during the late stages of development, late embryogenesis abundant (LEA) proteins, are associated with desiccation tolerance. More than 100 of the group I LEA genes, also termed Em genes, have been identified from plants, bacteria and animals. The wide distribution...
To determine the metabolic profiles of purine nucleotides and related compounds in leaves and roots of tea ( Camellia sinensis ), we studied the in situ metabolic fate of 10 different 14 C-labeled precursors in segments from tea seedlings. The activities of key enzymes in tea leaf extracts were...
Here we report on the characterization of rice osa-miR827 and its two target genes, OsSPX-MFS1 and OsSPX-MFS2 , which encode SPX-MFS proteins predicted to be implicated in phosphate (Pi) sensing or transport. We first show by Northern blot analysis that osa-miR827 is strongly induced by Pi...
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