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10.3390/plants12183323
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Article

Primary Screening of Microorganisms against Meloidogyne hapla (Chitwood, 1949) under the Conditions of Laboratory and Vegetative Tests on Tomato

by
Svetlana N. Nekoval
1,*,
Arina K. Churikova
1,
Maxim N. Chernyakovich
1 and
Mikhail V. Pridannikov
2
1
Federal Research Center of Biological Plant Protection, p/o 39, 350039 Krasnodar, Russia
2
Center of Parasitology “A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences”, 33 Leninsky Prospekt, 119071 Moscow, Russia
*
Author to whom correspondence should be addressed.
Plants 2023, 12(18), 3323; https://doi.org/10.3390/plants12183323
Submission received: 1 August 2023 / Revised: 29 August 2023 / Accepted: 31 August 2023 / Published: 20 September 2023
(This article belongs to the Special Issue Management of the Root-Knot Nematodes)
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Abstract

Highly adapted obligate endoparasites of the root system, root-knot nematodes (Meloidogyne spp.), cause great damage to agricultural crops. Our research is aimed at the assessment of nematicidal activity and effectiveness of antagonist fungal and bacterial strains against the most common type of root-knot nematode in the south of Russia. By means of molecular genetic identification, it was found that in the south of Russia, the species Meloidogyne hapla Chitwood, 1949 and Meloidogyne incognita (Kofoid and White, 1919) Chitwood, 1949 cause galls on the roots of open-ground and greenhouse tomato. Screening of microbial agents against second-stage juvenile (J2) M. hapla was carried out in the laboratory. At the end of the experiment, two liquid fungal cultures of Paecilomyces lilacinus BK-6 and Metarhizium anisopliae BK-2 were isolated, the nematicidal activity of which reached 100.0 and 70.2%, and exceeded the values of the biological standard (Nemotafagin-Mikopro) by 38.4% and 8.8%. The highest biological efficacy was noted in the liquid cultures of P. lilacinus BK-6, M. anisopliae BK-2, and Arthrobotrys conoides BK-8 when introduced into the soil before planting tomato. The number of formed galls on the roots was lower in comparison with the control by 81.0%, 75.5%, and 74.4%.
Keywords: microorganisms; root-knot nematodes; Meloidogyne hapla; nematicidal activity; galls; tomato; nematicides microorganisms; root-knot nematodes; Meloidogyne hapla; nematicidal activity; galls; tomato; nematicides

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MDPI and ACS Style

Nekoval, S.N.; Churikova, A.K.; Chernyakovich, M.N.; Pridannikov, M.V. Primary Screening of Microorganisms against Meloidogyne hapla (Chitwood, 1949) under the Conditions of Laboratory and Vegetative Tests on Tomato. Plants 2023, 12, 3323. https://doi.org/10.3390/plants12183323

AMA Style

Nekoval SN, Churikova AK, Chernyakovich MN, Pridannikov MV. Primary Screening of Microorganisms against Meloidogyne hapla (Chitwood, 1949) under the Conditions of Laboratory and Vegetative Tests on Tomato. Plants. 2023; 12(18):3323. https://doi.org/10.3390/plants12183323

Chicago/Turabian Style

Nekoval, Svetlana N., Arina K. Churikova, Maxim N. Chernyakovich, and Mikhail V. Pridannikov. 2023. "Primary Screening of Microorganisms against Meloidogyne hapla (Chitwood, 1949) under the Conditions of Laboratory and Vegetative Tests on Tomato" Plants 12, no. 18: 3323. https://doi.org/10.3390/plants12183323

APA Style

Nekoval, S. N., Churikova, A. K., Chernyakovich, M. N., & Pridannikov, M. V. (2023). Primary Screening of Microorganisms against Meloidogyne hapla (Chitwood, 1949) under the Conditions of Laboratory and Vegetative Tests on Tomato. Plants, 12(18), 3323. https://doi.org/10.3390/plants12183323

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