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Microbiology Research
Volume 16
Issue 2
10.3390/microbiolres16020035
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Article

Biological Control of Sclerotinia sclerotiorum on Greenhouse Lettuce Using Trichoderma koningiopsis Agg

by
Snježana Topolovec-Pintarić
1,*,
Ana Maria Kovaček
1,
Olga Malev
2,*,
Ivana Kušan
3,
Neven Matočec
3,
Ana Pošta
3,
Lucia Pole
3 and
Armin Mešić
3
1
Department of Plant Pathology, Faculty of Agriculture, University of Zagreb, 10000 Zagreb, Croatia
2
Laboratory for Aquaculture Biotechnology, Ruđer Bošković Institute, 10000 Zagreb, Croatia
3
Laboratory for Biological Diversity, Ruđer Bošković Institute, 10000 Zagreb, Croatia
*
Authors to whom correspondence should be addressed.
Microbiol. Res. 2025, 16(2), 35; https://doi.org/10.3390/microbiolres16020035
Submission received: 10 December 2024 / Revised: 13 January 2025 / Accepted: 22 January 2025 / Published: 31 January 2025
(This article belongs to the Collection Microorganisms and Their Incredible Potential to Face Societal Challenges)
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Abstract

The lettuce drop or white mold is an economically important disease as the causal fungus Sclerotinia sclerotiorum can infect the lettuce at any stage of plant development. Polyphagous nature of S. sclerotiorum, the longevity of soil-borne sclerotia and air-borne ascospores makes the control difficult. Chemical fungicides are available only for foliar application against infections by ascospores so, the development of bio-control is of great importance. We tested antagonism of native isolate T. koningiopsis agg. (Hypocreales) (STP8) under laboratory and greenhouse environments. In vitro tests showed excellent STP8 antagonisms to S. sclerotiorum evidencing hyperparasitic activity on mycelia and sclerotia as well as antibiosis. The sclerotia were completely degraded after two months. In the greenhouse, infection of lettuce with S. sclerotiorum was reduced by treating the seedlings with an STP8 spore suspension. Uninfected plants treated with STP8 were of the best quality based on morphological parameters, confirming the ability of STP8 to promote lettuce growth. Even the infected lettuce treated with STP8 were healthier and in better condition than the control lettuce, suggesting that STP8 was also enhancing plant defense system.
Keywords: antagonism; Ascomycota; beneficial fungi; Lactuca sativa L.; mycoparasitism; white mold antagonism; Ascomycota; beneficial fungi; Lactuca sativa L.; mycoparasitism; white mold

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MDPI and ACS Style

Topolovec-Pintarić, S.; Kovaček, A.M.; Malev, O.; Kušan, I.; Matočec, N.; Pošta, A.; Pole, L.; Mešić, A. Biological Control of Sclerotinia sclerotiorum on Greenhouse Lettuce Using Trichoderma koningiopsis Agg. Microbiol. Res. 2025, 16, 35. https://doi.org/10.3390/microbiolres16020035

AMA Style

Topolovec-Pintarić S, Kovaček AM, Malev O, Kušan I, Matočec N, Pošta A, Pole L, Mešić A. Biological Control of Sclerotinia sclerotiorum on Greenhouse Lettuce Using Trichoderma koningiopsis Agg. Microbiology Research. 2025; 16(2):35. https://doi.org/10.3390/microbiolres16020035

Chicago/Turabian Style

Topolovec-Pintarić, Snježana, Ana Maria Kovaček, Olga Malev, Ivana Kušan, Neven Matočec, Ana Pošta, Lucia Pole, and Armin Mešić. 2025. "Biological Control of Sclerotinia sclerotiorum on Greenhouse Lettuce Using Trichoderma koningiopsis Agg" Microbiology Research 16, no. 2: 35. https://doi.org/10.3390/microbiolres16020035

APA Style

Topolovec-Pintarić, S., Kovaček, A. M., Malev, O., Kušan, I., Matočec, N., Pošta, A., Pole, L., & Mešić, A. (2025). Biological Control of Sclerotinia sclerotiorum on Greenhouse Lettuce Using Trichoderma koningiopsis Agg. Microbiology Research, 16(2), 35. https://doi.org/10.3390/microbiolres16020035

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