Transcriptional response to varying air humidity in Arabidopsis

To investigate the molecular mechanism of plant response to air humidity, wild-type plants and pip2;5, a mutant defective in water transport, were subjected 24 hours of high and low air humidity treatments. The results showed that genes related to hypoxia response, ethylene pathways, and ABA responses were differentially expressed in the pip2;5 mutant compared to the wild type. Overall design: The inflorescence meristems of wild-type and pip2;5 plants under various humidity conditions were dissected for transcriptome analysis.