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Full-Text Articles in Life Sciences
Belowground Advantages In Construction Cost Facilitate A Cryptic Plant Invasion, Joshua Caplan
Belowground Advantages In Construction Cost Facilitate A Cryptic Plant Invasion, Joshua Caplan
Biology Faculty Research and Scholarship
The energetic cost of plant organ construction is a functional trait that is useful for understanding carbon investment during growth (e.g. the resource acquisition vs. tissue longevity tradeoff), as well as in response to global change factors like elevated CO2 and N. Despite the enormous importance of roots and rhizomes in acquiring soil re- sources and responding to global change, construction costs have been studied almost exclusively in leaves. We sought to determine how construction costs of aboveground and belowground organs differed between native and introduced lineages of a geographically widely dispersed wetland plant species (Phragmites australis) under varying levels …
Rna-Seq Analysis Reveals A Six-Gene Soxr Regulon In Streptomyces Coelicolor, Nawar Naseer, Joshua A. Shapiro, Monica Chander
Rna-Seq Analysis Reveals A Six-Gene Soxr Regulon In Streptomyces Coelicolor, Nawar Naseer, Joshua A. Shapiro, Monica Chander
Biology Faculty Research and Scholarship
The redox-regulated transcription factor SoxR is conserved in diverse bacteria, but emerging studies suggest that this protein plays distinct physiological roles in different bacteria. SoxR regulates a global oxidative stress response (involving >100 genes) against exogenous redox-cycling drugs in Escherichia coli and related enterics. In the antibiotic producers Streptomyces coelicolor and Pseudomonas aeruginosa, however, SoxR regulates a smaller number of genes that encode membrane transporters and proteins with homology to antibiotic-tailoring enzymes. In both S. coelicolor and P. aeruginosa, SoxR-regulated genes are expressed in stationary phase during the production of endogenously-produced redox-active antibiotics. These observations suggest that SoxR evolved …