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In the human pathogen Pseudomonas aeruginosa, betaine aldehyde dehydrogenase (BADH) may play a dual role assimilating carbon and nitrogen from choline or choline precursors—abundant at infection sites—and producing glycine betaine, which protects the bacteria against the high-osmolarity stress prevalent in the infected tissues. We cloned the P. aeruginosa BADH gene and expressed the BADH protein in...
Fumonisin B1 (FB1) is an amphipathic toxin produced by the pathogenic fungus Fusarium verticillioides which causes stem, root and ear rot in maize (Zea mays L.). In this work, we studied the action of FB1 on the plasma membrane H+-ATPase (EC 3.6.1.34) from germinating maize embryos, and on the fluidity and lipid peroxidation of these membranes. In maize embryos the toxin at 40 μM inhibited root elongation...
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