Article
Plant Sciences
Ayako Kusakabe, Istvan Molnar, S. Patricia Stock
Summary: This study found that a single root application of a mixture of trans-cinnamic acid (t-CA) and (4E)-5-phenylpent-4-enoic acid (PPA) significantly reduced the penetration of Meloidogyne incognita infective juveniles (J2s) into cowpea roots without impairing plant growth or chlorophyll content.
Article
Agriculture, Multidisciplinary
Qiaofang Lu, Kunguang Wang, Zhechao Dou, Lina Zhong, Yuanyuan Yao, Yuanmei Zuo
Summary: By downregulating the expression of the parasite gene Mi-flp-18, vanillin in the root exudates of resistant tomato plants can alleviate nematode damage and reduce parasitic infection and reproduction. This study reveals an effective nematicidal compound that can be used for feasible and economical strategies to control root-knot nematodes.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Microbiology
Renjun Zhang, Jin Ouyang, Xingyang Xu, Jie Li, Muzammal Rehman, Gang Deng, Jie Shu, Dake Zhao, Suiyun Chen, R. Z. Sayyed, Shah Fahad, Yaqiong Chen
Summary: The study found that the bacterial strain Burkholderia arboris J211 has antagonistic effects against root-knot nematodes and can promote tobacco growth and increase yield.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Agronomy
Asmaa Sh. M. Daoush, Mohamed H. Hendawey, Rabaa Yaseen, Ahmed S. M. El-Nuby, Tarek M. Bedair, Khairiah Mubarak Alwutayd, Nawal Al-Hoshani, Ahmed Shaaban, Anum Bashir, Lin Li
Summary: Tomato plants are susceptible to infection by plant-parasitic nematodes, but the biosynthesized selenium nanoparticles show potential as a cost-effective and environmentally friendly biocontrol agent for RKN management in tomato plants. The nanoparticles significantly reduced the number of galls, egg mass, and eggs/egg mass of the nematode, and improved tomato growth and enzyme activity.
Article
Biology
Xinglong Lian, Shuang Liu, Lanyuwen Jiang, Xinyu Bai, Yuanyuan Wang
Summary: Research has identified Clostridium beijerinckii Strain Sneb518 as a potential biocontrol agent with solid activity against root-knot nematodes. Greenhouse experiments showed that Sneb518 significantly reduced the number of root galls and egg masses, and increased tomato plant growth. Additionally, Sneb518 had a positive effect on seed germination.
Article
Plant Sciences
Richard Raj Singh, Wim M. L. Wesemael
Summary: The study demonstrates that the biocontrol efficacy of P. polymyxa LMG27872 against the root-knot nematode M. incognita in tomato is dose-dependent. In in vivo experiments, a high dose of P. polymyxa LMG27872 can effectively inhibit the development and reproduction of the nematode, leading to a significant reduction in parasitism on tomato plants. Additionally, P. polymyxa LMG27872 has a negative effect on tomato growth, but this effect disappears when the plants are challenged by the nematode, indicating a tolerance or defense priming mechanism.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Multidisciplinary Sciences
Ritul Saharan, J. A. Patil, Saroj Yadav, Anil Kumar, Vinod Goyal
Summary: The root-knot nematode is a damaging pest in vegetable crops globally. The continuous use of nematicide has negative impacts on human and environmental health. To reduce nematicide usage, eco-friendly integrated nematode management is necessary. Trichoderma, an antagonistic fungus, has shown efficacy in controlling root-knot nematode. The strain Trichoderma asperellum FbMi6 exhibited significant nematicidal activity and when enriched in neem cake, it increased okra yield and decreased nematode population.
SCIENTIFIC REPORTS
(2023)
Article
Agronomy
Qianru Hu, Minmin Yang, Tingting Bo, Yuxin Li, Caimi Wu, Minghe Mo, Yajun Liu
Summary: It has been reported that Actinobacteria, specifically Streptomyces albogriseolus ND41 and S. fimicarius D153, produce nematicidal metabolites with significant activity against Meloidogyne incognita. These metabolites are hydrosoluble macromolecules, making them compatible with soil and roots, and convenient for practical application.
Article
Microbiology
Haizhen Nie, Binna Lv, Manhong Sun, Zengming Zhong, Shidong Li
Summary: This study demonstrates that pre-treatment with Dazomet significantly enhances the biocontrol efficacy of Purpureocillium lilacinum against Meloidogyne incognita in vitro.
Article
Biotechnology & Applied Microbiology
Manuel Silva-Valenzuela, Reyna I. Rojas-Martinez, Rosa H. Manzanilla-Lopez, Martha L. Macias-Rubalcava, Sergio Aranda-Ocampo, Emma Zavaleta-Mejia
Summary: This study aimed to develop biological alternatives to nematicides for managing root-knot nematodes in Mexico. The researchers isolated endophytic fungi from chili pepper and tomato plants and evaluated their effectiveness in promoting plant growth and parasitizing nematode eggs and juveniles. Three fungal isolates were found to be the most effective, with positive effects on plant growth and nematode control.
BIOLOGICAL CONTROL
(2023)
Article
Microbiology
Alaa Baazeem, Mohammed Alorabi, Palanisamy Manikandan, Saqer S. Alotaibi, Abdulaziz Almanea, Ahmed Abdel-Hadi, Ponnuswamy Vijayaraghavan, Subhanandharaj Russalamma Flanet Raj, Young Ock Kim, Hak-Jae Kim
Summary: The study demonstrated that the fungal isolate P. formosus MD12 had potential for biocontrol of the root-knot nematode, with effective inhibition of egg hatching and significant reduction of nematode populations in soil and roots.
Article
Biotechnology & Applied Microbiology
Eun-Jae Park, Hyun-Jae Jang, Ji-Yeon Park, Ye Kyeong Yang, Min Ji Kim, Chan Sun Park, Soyoung Lee, Bong-Sik Yun, Seung-Jae Lee, Seung Woong Lee, Mun-Chual Rho
Summary: The nematicidal effects of Streptomyces nigrescens KA-1 were evaluated against Meloidogyne incognita, and it showed significant activity both in vitro and in vivo. Two active compounds, trichostatin C and dehydroxytrichostatin A, were isolated from the culture broth of the strain and exhibited potent anti-nematicidal activity.
BIOLOGICAL CONTROL
(2023)
Article
Agronomy
Valter Cruz-Magalhaes, Rafaela A. Guimaraes, Julio C. P. da Silva, Amanda F. de Faria, Marcio P. Pedroso, Vicente P. Campos, Phellippe A. S. Marbach, Flavio H. de Medeiros, Jorge T. De Souza
Summary: Bacillus strains BMH and INV, closely related to Bacillus velezensis, individually reduced the number of galls and eggs of M. incognita by more than 90% in tomato roots. However, when combined (BMH + INV), the suppression of RKN and tomato growth was lower compared to single-strain applications.
PEST MANAGEMENT SCIENCE
(2022)
Article
Agriculture, Multidisciplinary
Yanli Zhao, Chidi Zhong, Yixin Li, Wenhui Zhou, Xiaowei Huang
Summary: This study identified two novel genes, Minc3s01748g26034 and Minc3s02548g30585, that regulate the aversive behavior of Meloidogyne incognita. In addition, it discovered two volatile compounds produced by biocontrol bacteria that promote the repulsive behavior of M. incognita. These findings provide new insights into the mechanisms underlying the repulsive response of M. incognita and can aid in developing novel strategies for controlling root-knot nematodes.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Entomology
Rami Kassam, Nisha Jaiswal, Alkesh Hada, Victor Phani, Jyoti Yadav, Roli Budhwar, Jeffrey Godwin, Madhurima Chatterjee, Chaitra G. Bhat, Jigni Mishra, Virendra S. Rana, Aditi Kundu, Gautam Chawla, Vishal S. Somvanshi, Uma Rao
Summary: In this study, a Paecilomyces tenuis isolate from rhizosphere soil in India showed strong biocontrol activity against the plant-parasitic nematode Meloidogyne incognita. The fungal filtrate caused high mortality of the infective second-stage juveniles (J2s) and inhibited egg hatching and host-root penetration. The isolate contained Huperzine A, an acetylcholinesterase inhibitor, and other nematicidal compounds. Transcriptomic analysis revealed the molecular pathways underlying the nematocidal effects. This study highlights the potential of P. tenuis as a biocontrol agent and a source of Huperzine A.
JOURNAL OF PEST SCIENCE
(2023)