Plant growth regulators interact with elevated temperature to alter heat stress signaling via the Unfolded Protein Response in maize.

ABSTRACT: Plants are increasingly exposed to high temperatures, which can cause accumulation of unfolded protein in the endoplasmic reticulum (ER). This condition, known as ER stress, evokes the unfolded protein response (UPR), a cytoprotective signaling pathway. One important branch of the UPR is regulated by splicing of bZIP60 mRNA by the IRE1 stress sensor. There is increasing evidence that commercial plant growth regulators may protect against abiotic stressors including heat stress and drought, but there is very little mechanistic information about these effects or about the regulatory pathways involved. We evaluated evidence in the B73 Zea mays inbred for differences in the activity of the UPR between permissive and elevated temperature in conjunction with plant growth regulator application. T

SUBMITTER: Neill EM 

PROVIDER: S-EPMC6637120 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature