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1A poisonous substance derived from a plant.
- ‘Rather than phytotoxins (poisonous plant compounds), the plant is protected by vicious stinging ants (Azteca sp.) that live within the hollow stems.’
- ‘While I have focused on insecticide resistance, Drosophila species have been shown resistance to other toxicants, including phytotoxins in their natural diet and certain metal ions whose presence has increased in the environment.’
- 1.1A substance that is phytotoxic, especially one produced by a parasite.
- ‘Nectrotrophic pathogens commonly produce phytotoxins that are essential for pathogenicity and cause plant cell death.’
- ‘We concluded that the roots responded to these phytotoxins by inducing barriers in the vulnerable, permeable parts, with the result that less toxin is absorbed.’
- ‘The mechanisms by which such deleterious rhizosphere bacteria operate include the production of phytotoxins and phytohormones, competition for nutrients, and the inhibition of mycorrhizal fungi.’
- ‘In addition, an invading fungus may produce stress-inducing chemicals, such as phytotoxins, resulting in significant stress and damage to the host cells.’
- ‘Pathogens such as Fusarium spp. often produce phytotoxins such as fumonisins and fusaric acid, and protein toxins that assist in overcoming host defences, allowing establishment of the pathogen.’
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