What is it about?

We exposed Oregano leaves to greenhouse whiteflies feeding and heat stress separately and in combination. Photosynthesis in oregano did not recover to pre-stress level after heat stress. The insect feeding increased resistance to heat stress. Infested plants emitted monoterpenes and benzenoids but recovered after infestation was removed. Plant exposed to only heat stress rapidly emitted green leaf volatiles from lipoxygenase pathways, monoterpenes, and benzenoids. Infestation decreases the emission of volatile organic compounds in response to heat stress

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Why is it important?

photosynthesis and volatile emission response in plants have not previously been studied in combination. Our publication shows that exposure to biotic stress can strengthen plants response to abiotic stresses such as extreme heat shock.

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This page is a summary of: Phloem-feeding insect infestation antagonizes volatile organic compound emissions and enhances heat stress recovery of photosynthesis in Origanum vulgare, Environmental and Experimental Botany, September 2021, Elsevier, DOI: 10.1016/j.envexpbot.2021.104551.
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