Unknown

Dataset Information

0

NPR1-dependent salicylic acid signaling is not involved in elevated CO2-induced heat stress tolerance in Arabidopsis thaliana.


ABSTRACT: Elevated CO2 can protect plants from heat stress (HS); however, the underlying mechanisms are largely unknown. Here, we used a set of Arabidopsis mutants such as salicylic acid (SA) signaling mutants nonexpressor of pathogenesis-related gene 1 (npr1-1 and npr1-5) and heat-shock proteins (HSPs) mutants (hsp21 and hsp70-1) to understand the requirement of SA signaling and HSPs in elevated CO2-induced HS tolerance. Under ambient CO2 (380 µmol mol(-1)) conditions, HS (42°C, 24 h) drastically decreased maximum photochemical efficiency of PSII (Fv/Fm) in all studied plant groups. Enrichment of CO2 (800 µmol mol(-1)) with HS remarkably increased the Fv/Fm value in all plant groups except hsp70-1, indicating that NPR1-dependent SA signaling is not involved in the elevated CO2-induced HS tolerance. These results also suggest an essentiality of HSP70-1, but not HSP21 in elevated CO2-induced HS mitigation.

SUBMITTER: Ahammed GJ 

PROVIDER: S-EPMC4622482 | biostudies-other | 2015

REPOSITORIES: biostudies-other

Similar Datasets

| S-EPMC4378626 | biostudies-literature
| S-EPMC9650836 | biostudies-literature
| S-EPMC6019062 | biostudies-literature
| S-EPMC6929131 | biostudies-literature
| S-EPMC7225777 | biostudies-literature
| S-EPMC6310259 | biostudies-literature
| S-EPMC5829640 | biostudies-literature
| S-EPMC6415875 | biostudies-literature
| S-EPMC4755599 | biostudies-literature
| S-EPMC8400336 | biostudies-literature