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Chitosan induces salicylic acid local and systemically in banana plants and reduces colonization by the pathogen Fusarium oxysporum f. sp. cubense TR4

Lopez-Moya, F.; Zorrilla-Fontanesi, J.; Lozano-Soria, A.; Fernandez-De Larrinoa Ganado, N.; Moreno-Gonzalez, C. M.; Hernandez, A.; Torres, A.; Gonzalez-Silvera, D.; Gunse, B.; Lopez-Jimenez, J. A.; Lopez-Llorca, L. V.

2024-03-01 plant biology
10.1101/2024.02.27.582266 bioRxiv
Show abstract

Banana (Musa spp.) is essential for food security. For its clonality is highly susceptible to pests and diseases. The wilt fungus Fusarium oxysporum f. sp. cubense Tropical Race 4 (FocTR4) threatens banana production worldwide. We notice that chitosan protects banana from biotic stress. Chitosan, a plant defence elicitor with antimicrobial activity, triggers salicylic acid (SA) and methyl salicylate biosynthesis and induces systemic acquired resistance (SAR) genes, mainly flavin-dependent monooxygenase 1 (FMO1), in banana. Chitosan promotes root exudation of SA and emission of methyl salicylate (MeSA). Banana germplasm, Petit Naine, Gros Michel, Enzirabahima, Yangambi Km5 and Foconah banana differ in their response to chitosan. Chitosan induces, in Foc resistant Yangambi Km5, ca. 7-fold FMO1. Preventive chitosan treatments together with the endophytic biocontrol fungus Pochonia chlamydosporia strain 123 reduce (ca. 4-fold) colonization of banana roots by FocTR4. Therefore, chitosan and beneficial endophytes can help to manage sustainably FocTR4 in banana.

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"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.