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Research findings from Purdue University update understanding of photosynthesis research
2008 FEB 5 -- "The photosystem II (PSII) double mutant Delta PsbO:Delta PsbU was unable to grow photoautotrophically at pH 7.5, but growth was restored at pH 10. We have isolated a pseudorevertant of this strain, which exhibited photoautotrophic growth at pH 7.5," researchers in the United States report.
"PSII-specific oxygen evolution and assembled PSII centers in the pseudorevertant and the original Delta PsbO:Delta PsbU strains were similar at pH 7.5. Comparison of global gene expression of the two strains at pH 7.5 revealed that < 4% of genes differed. In the pseudorevertant, up-regulated transcripts included stress-responsive genes, many of...
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