Rht
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. Comparison of IAA-Induced and Low Temperature-Induced GA3 Responsiveness and α-Amylase Production by GA3 Insensitive Dwarf Wheat Aleurone 1
Rht3-containing gibberellic acid (GA3) insensitive deembryonated wheat (Triticum aestivum L. var Cappelle Desprez × Minister Dwarf) aleurone, that can be made responsive to GA3 by low temperature, can also be rendered GA3 sensitive by preincubation with indoleacetic acid (IAA). The IAA-induced response of the dwarf selection is concentration-dependent, rela
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14. slender Rice, a Constitutive Gibberellin Response Mutant, Is Caused by a Null Mutation of the SLR1 Gene, an Ortholog of the Height-Regulating Gene GAI/RGA/RHT/D8
The rice slender mutant (slr1-1) is caused by a single recessive mutation and results in a constitutive gibberellin (GA) response phenotype. The mutant elongates as if saturated with GAs. In this mutant, (1) elongation was unaffected by an inhibitor of GA biosynthesis, (2) GA-inducible α-amylase was produced by the aleurone layers without gibberellic acid a
American Society of Plant Physiologists.
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15. Genetic Organization of the Region Encoding Regulation, Biosynthesis, and Transport of Rhizobactin 1021, a Siderophore Produced by Sinorhizobium meliloti
Eight genes have been identified that function in the regulation, biosynthesis, and transport of rhizobactin 1021, a hydroxamate siderophore produced under iron stress by Sinorhizobium meliloti. The genes were sequenced, and transposon insertion mutants were constructed for phenotypic analysis. Six of the genes, named rhbABCDEF, function in the biosynthesis
American Society for Microbiology.
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16. A Novel Dwarfing Mutation in a Green Revolution Gene from Brassica rapa1
Mutations in the biosynthesis or signaling pathways of gibberellin (GA) can cause dwarfing phenotypes in plants, and the use of such mutations in plant breeding was a major factor in the success of the Green Revolution. DELLA proteins are GA signaling repressors whose functions are conserved in different plant species. Recent studies show that GA promotes st
American Society of Plant Biologists.
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17. Pituitary adenylyl cyclase-activating peptide: A pivotal modulator of glutamatergic regulation of the suprachiasmatic circadian clock
The circadian clock in the suprachiasmatic nucleus (SCN) of the hypothalamus organizes behavioral rhythms, such as the sleep–wake cycle, on a near 24-h time base and synchronizes them to environmental day and night. Light information is transmitted to the SCN by direct retinal projections via the retinohypothalamic tract (RHT). Both glutamate (Glu) and pit
The National Academy of Sciences.
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18. Membrane properties and synaptic inputs of suprachiasmatic nucleus neurons in rat brain slices.
1. Whole-cell recordings were made from 390 neurons of the suprachiasmatic nucleus (SCN) in horizontal brain slices during different portions of the circadian day. The locomotor activity of the rats was measured prior to the preparation of brain slices to insure that each rat was entrained to a 12 h-12 h light-dark cycle. 2. The mean input conductance was 42
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19. A Structural Model of Pestivirus Erns Based on Disulfide Bond Connectivity and Homology Modeling Reveals an Extremely Rare Vicinal Disulfide
Erns is a pestivirus envelope glycoprotein and is the only known viral surface protein with RNase activity. Erns is a disulfide-linked homodimer of 100 kDa; it is found on the surface of pestivirus-infected cells and is secreted into the medium. In this study, the disulfide arrangement of the nine cysteines present in the mature dimer was established by anal
American Society for Microbiology.
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20. Characterization of a Gibberellin-Insensitive Dwarf Wheat, D6899 1: EVIDENCE FOR A REGULATORY STEP COMMON TO MANY DIVERSE RESPONSES TO GIBBERELLINS
The effects of gibberellin in two wheat varieties, Nainari 60 and D6899, have been studied. D6899 is a dwarf wheat having a single locus mutation, the Rht 3 gene (“Tom Thumb” gene), which is located on chromosome 4A. When compared with the standard height wheat variety, Nainari 60, D6899 does not have a slowdown in cellular metabolism such as respiration
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21. YfiK from Escherichia coli Promotes Export of O-Acetylserine and Cysteine
yfiK was discovered as a gene augmenting cysteine production when it was overexpressed in an industrial Escherichia coli production strain. The gene product is an integral membrane protein with about six predicted transmembrane helices; it belongs to the RhtB family of export proteins. YfiK overproduction from a plasmid leads to drastic and parallel secretio
American Society for Microbiology.