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Combination of the Systemin peptide with the beneficial fungus Trichoderma afroharzianum T22 improves plant defense responses against pests and diseases

Aprile, A. M.; Coppola, M.; Turra, D.; Vitale, S.; Cascone, P.; Diretto, G.; Fiore, A.; Castaldi, V.; Romanelli, A.; Avitalibe, C.; Guerrieri, E.; Woo, S. L.; Rao, R.

2022-03-20 genetics
10.1101/2022.03.20.485010 bioRxiv
Show abstract

Trichoderma spp. are among the most widely used plant beneficial fungi in agriculture. A novel approach to enhance their effectiveness in plant defense is to use the fungi in combination with bioactive molecules including plant-derived compounds. Here, we show that plant treatment with Trichoderma afroharzianum (strain T22) and Systemin (Sys), a tomato plant peptide active in triggering plant defense, confers protection against the fungal pathogens Fusarium oxysporum, Botrytis cinerea and the insect pest Tuta absoluta. The observed defensive response was associated with increased accumulation of metabolites and transcripts involved in the Jasmonic acid (JA) pathway. Our findings suggest that the innovative combination of T. afroharzianum T22 and Sys can result in a more effective and robust control of different biotic stress agents.

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