The prevailing reaction of plants to pest attack is the activation of various defense mechanisms. In tomato, several studies indicate that an 18 amino acid (aa) peptide, called systemin, is a primary signal for the systemic induction of direct resistance against plant-chewing pests, and that the transgenic expression of the prosystemin gene (encoding the 200 aa systemin precursor) activates genes involved in the plant response to herbivores. By using a combination of behavioral, chemical, and gene expression analyses, we report that systemin enhances the production of bioactive volatile compounds, increases plant attractivity towards parasitiod wasps, and activates genes involved in volatile production. Our data imply that systemin is involved in the systemic activation of indirect defense in tomato, and we conclude that a single gene controls the systemic activation of coordinated and associated responses against pests.

SYSTEMIN REGULATES BOTH SYSTEMIC AND VOLATILE SIGNALLING IN TOMATO PLANTS / Corrado, Giandomenico; R., Sasso; M., Pasquariello; L., Iodice; A., Carretta; P., Cascone; L., Ariati; Digilio, MARIA CRISTINA; E., Guerrieri; Rao, Rosa. - In: JOURNAL OF CHEMICAL ECOLOGY. - ISSN 0098-0331. - STAMPA. - 33:4(2007), pp. 669-681. [10.1007/S10886-007-9254-9]

SYSTEMIN REGULATES BOTH SYSTEMIC AND VOLATILE SIGNALLING IN TOMATO PLANTS

CORRADO, GIANDOMENICO;DIGILIO, MARIA CRISTINA;RAO, ROSA
2007

Abstract

The prevailing reaction of plants to pest attack is the activation of various defense mechanisms. In tomato, several studies indicate that an 18 amino acid (aa) peptide, called systemin, is a primary signal for the systemic induction of direct resistance against plant-chewing pests, and that the transgenic expression of the prosystemin gene (encoding the 200 aa systemin precursor) activates genes involved in the plant response to herbivores. By using a combination of behavioral, chemical, and gene expression analyses, we report that systemin enhances the production of bioactive volatile compounds, increases plant attractivity towards parasitiod wasps, and activates genes involved in volatile production. Our data imply that systemin is involved in the systemic activation of indirect defense in tomato, and we conclude that a single gene controls the systemic activation of coordinated and associated responses against pests.
2007
SYSTEMIN REGULATES BOTH SYSTEMIC AND VOLATILE SIGNALLING IN TOMATO PLANTS / Corrado, Giandomenico; R., Sasso; M., Pasquariello; L., Iodice; A., Carretta; P., Cascone; L., Ariati; Digilio, MARIA CRISTINA; E., Guerrieri; Rao, Rosa. - In: JOURNAL OF CHEMICAL ECOLOGY. - ISSN 0098-0331. - STAMPA. - 33:4(2007), pp. 669-681. [10.1007/S10886-007-9254-9]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/203658
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