Genes responding to mild heat stress in the control (CS) or ΔrpoZ strains.

<p>(A) The Venn diagram shows genes down-regulated or up-regulated in ΔrpoZ or CS upon 24-h treatment at 40°C. The gene was considered as differently regulated if log₂ of the fold change was ≤−1 or ≥1 and the P value was <0.05. The numbers inside the sectors indicate the numbers of overlapping and unique genes in different pairwise comparisons. Genes with known function that are down-regulated or up-regulated in both strains upon heat treatment are indicated, and also genes showing opposite response to heat treatment in the studied strains are included if their function is known. (B) Distribution of mild heat stress responsive genes to functional categories according to Cyanobase.