Dehydration rapidly induces expression of NCED genes from a single subclade in diverse eudicots.

ABSTRACT:

Main conclusion

A gene within a single subclade of NCED genes is triggered in response to both, short- and long-term dehydration treatments, in three model dicot species. During dehydration, some plants can rapidly synthesise the stress hormone abscisic acid (ABA) in leaves within 20 min, triggering the closure of stomata and limiting further water loss. This response is associated with significant transcriptional upregulation of Nine-cis-Epoxycarotenoid Dioxygenase (NCED) genes, which encode the enzyme considered to be rate-limiting in ABA biosynthesis. However, most embryophyte species possess multiple NCED genes, and it is not currently known whether there is any phylogenetic pattern to which NCED genes are involved in this response. We tested transcriptional responses to dehydr

SUBMITTER: Vo HM 

PROVIDER: S-EPMC11772543 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature