Transcriptome response of high- and low-light-adapted Prochlorococcus strains to changing iron availability.

ABSTRACT: Prochlorococcus contributes significantly to ocean primary productivity. The link between primary productivity and iron in specific ocean regions is well established and iron limitation of Prochlorococcus cell division rates in these regions has been shown. However, the extent of ecotypic variation in iron metabolism among Prochlorococcus and the molecular basis for differences is not understood. Here, we examine the growth and transcriptional response of Prochlorococcus strains, MED4 and MIT9313, to changing iron concentrations. During steady state, MIT9313 sustains growth at an order-of-magnitude lower iron concentration than MED4. To explore this difference, we measured the whole-genome transcriptional response of each strain to abrupt iron starvation and rescue. Only four of the 1159 o

SUBMITTER: Thompson AW 

PROVIDER: S-EPMC3176520 | biostudies-literature | 2011 Oct

REPOSITORIES: biostudies-literature