Transcriptional Regulation of thersbVPromoter Controlling Stress Responses to Ethanol, Carbon Limitation, and Phosphorous Limitation inBacillus subtilis

Transcriptional Regulation of the rsbV Promoter Controlling Stress Responses to Ethanol, Carbon Limitation, and Phosphorous Limitation in Bacillus subtilis

The sigma(B)-dependent promoter in front of the rsbV gene of Bacillus subtilis is induced approximately 5-fold in response to (1) the addition of 4% ethanol, (2) carbon starvation, and (3) phosphorous starvation. Binding sites for the global carbon and nitrogen regulators, CcpA and TnrA, were mutated, and the consequences of their loss and that of CcpA or TnrA were studied using rsbV-lacZ fusio...

The transcriptional control of plant responses to phosphate limitation.

Plants have evolved an array of responses that adapt their growth to conditions of limited phosphate (Pi) supply. These involve biochemical and developmental changes that improve Pi acquisition and recycling, and protect against the stress of Pi starvation. The induction of these responses requires a sophisticated regulatory system that integrates information on external and internal plant Pi s...

Adaptation of Bacillus subtilis to oxygen limitation.

Bacillus subtilis grows anaerobically by at least two different pathways, respiration using nitrate as an electron acceptor and fermentation in the absence of electron acceptors. Regulatory mechanisms have evolved allowing cells to shift to these metabolic capabilities in response to changes in oxygen availability. These include transcriptional activation of fnr upon oxygen limitation, a proces...

physiological responses of fennel (foeniculum vulgare l.) to water limitation

two field experiments were conducted at the research farm of the faculty of agriculture, university of tabriz, iran during 2009-2010 and 2010-2011, to evaluate the response of fennel (foeniculum vulgare l.) landraces to limited irrigation. experiments were arranged as split plot based on randomized complete block design in three replications with irrigation treatments (irrigation after 60, 90, ...

Regulation of Bacteroides fragilis katB mRNA by Oxidative Stress and Carbon Limitation