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Study examines jasmonic acid's effects on defence responses in Bt and non-Bt corn, implying potential improvement in crop resilience.
Bt (Bacillus thuringiensis) corn is the most commercialized anti-insect transgenic crops. We examined the effects of jasmonic acid (JA) on the changes in contents of defence chemicals and expression of defence-related genes in the treated part (first leaf) and non-treated part (second leaf and root) of Bt corn varieties 5422Bt1 and 5422CBCL and their conventional corn 5422 (non-Bt corn). The JA exposure did not affect the Bt protein content of two Bt corns. Among the three corn varieties JA-induced effects in the first leaf did not differ. However systemically induced effects in the second leaf and root in Bt corns were significant than in non-Bt corn. It can be concluded that Bt gene introduction and endogenous chemical defence responses of corns act synergistically during the JA systemically induced defence processes
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Feng et al. (2018) studied this question.
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