Aquaporins Respond to Chilling in the Phloem by Altering Protein and mRNA Expression.

ABSTRACT: Previous experiments using heat exchangers (liquid cooled blocks) to chill a portion of plant stem have shown a transient stoppage in phloem translocation and an increase in measured phloem pressure. Although a chilled-induced stoppage of phloem transport has been known for over 100 years, the mechanism of this phenomenon is still poorly understood. Recently, work has highlighted that aquaporins occur within the plasma membrane of the sieve tubes along the entire source-to-sink pathway, and that isoforms of these water channel proteins may change dynamically. Aquaporins show regulatory roles in controlling tissue and cellular water status in response to environmental hardships. Thus, we tested if protein localization and mRNA transcript abundance changes occur in response to chilling in ba

SUBMITTER: Stanfield R 

PROVIDER: S-EPMC6468725 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature