Application of 4-CPA or ethanol enhances plant growth and fruit quality of phyA mutant under heat stress.

ABSTRACT: As the phytochromes play a key role in plant light perception, they also modulate stress responses. The tomato mutant c.v. Moneymaker lacking PHYTOCHROME A (PHYA) exhibits tolerance to heat stress during the vegetative growth phase; however, this response does not continue into the reproductive stage. In this study, the response of phyA at the reproductive stage was improved through the exogenous application of 4-chlorophenoxy acetic acid (4-CPA) and ethanol under heat stress, either at 37 °C in controlled culture room or fluctuating high temperatures (approximately 50 °C and 30 °C in midday and night, respectively) during the summer in greenhouse. 4-CPA, a synthesized plant growth regulator with functions similar to that of auxins, induced growth and flower formation at the flowering stag

SUBMITTER: Ahmed RAH 

PROVIDER: S-EPMC12432177 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature