Interactions between engineered tomato plants expressing antifungal enzymes and nontarget fungi in the rhizosphere and phyllosphere

M Girlanda, Valeria Bianciotto, Gilda A. Cappellazzo, Leonardo Casieri, R Bergero, Elena Martino, AM Luppi, Silvia Perotto

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The introduction of genetically modified (GM) plants in agroecosystems raises concern about possible effects on nontarget species. The impact of a tomato line transformed for constitutive expression of tobacco β‐1,3‐glucanase and chitinase on indigenous nonpathogenic fungi was investigated. In greenhouse experiments, no significant differences were found in the colonization by arbuscular mycorrhizal fungi. Diversity indices computed from over 20 500 colonies of culturable rhizosphere and phyllosphere saprotrophic microfungi, assigned to 165 species (plus>80 sterile morphotypes), showed no significant differences between GM and wild‐type plants. Differences were found by discriminant analysis in both the rhizosphere and the phyllosphere, but such effects were minor compared with those linked to different plant growth stages.
Original languageEnglish
Pages (from-to)9-18
Number of pages10
JournalFEMS Microbiology Letters
Volume288
Issue number1
DOIs
Publication statusPrint publication - Nov 2008
Externally publishedYes

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