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
Plant Sciences
Weidan Nie, Lili Liu, Yinxia Chen, Mingyin Luo, Chenghao Feng, Chaonan Wang, Zhongmin Yang, Chong Du
Summary: In this study, six differentially expressed genes (DEGs) encoding WRKY proteins, SlWRKY1, SlWRKY13, SlWRKY30, SlWRKY41, SlWRKY46, and SlWRKY80, were identified. Further investigation revealed that SlWRKY80 plays an important role in Mi-1-mediated resistance to RKNs. Virus-induced gene silencing (VIGS) assay confirmed that SlWRKY80 is a positive regulator in tomato resistance to RKNs.
Article
Multidisciplinary Sciences
Rehab Y. Ghareeb, Nihal Galal El-Din Shams El-Din, Dahlia M. El Maghraby, Dina S. S. Ibrahim, Ahmed Abdel-Megeed, Nader R. Abdelsalam
Summary: The purpose of this study was to test the nematicidal activity of two marine algae extracts and their synthesized silver nanoparticles against root-knot nematodes that infest tomato plants. The nanoparticles synthesized from one of the algae, Colpomenia sinuosa, showed the highest nematicidal activity.
SCIENTIFIC REPORTS
(2022)
Article
Plant Sciences
Laura C. C. Rosso, Francesca Romano, Isabella Pentimone, Aurelio Ciancio, Mariantonietta Colagiero
Summary: This study investigated the expression of WRKY transcription factors and defense-related genes in the roots of Apulian tomato colonized by Pochonia chlamydosporia and parasitized by Meloidogyne incognita. The results show that the association of P. chlamydosporia with RKN-parasitized plants enhanced plant growth, but with genotype-specific responses. No significant changes were observed in the expression of defense-related genes during endophytism.
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
Biotechnology & Applied Microbiology
Raghda Zuhair, Yasser Thabet A. Moustafa, Nabil S. A. Mustafa, Mohamad F. El-Dahshouri, Lixin Zhang, Mohamed F. Ageba
Summary: The study showed that vermicomposts from different plant residues sources can significantly promote the growth of tomato plants infected with root-knot nematodes while effectively controlling the nematode infection. This type of vermicompost serves not only as a bio-organic fertilizer but also as an effective bio-controlling treatment for root-knot nematodes, with no negative impact on the environment.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Plant Sciences
Wenchao Zhao, Jingjing Liang, Huang Huang, Jinshan Yang, Jiaping Feng, Lulu Sun, Rui Yang, Mengjia Zhao, Jianli Wang, Shaohui Wang
Summary: Jasmonic acid is involved in regulating defense and growth activities in plants, and it negatively regulates the susceptibility of root-knot nematodes in tomato plants. The presence of kaempferol, a type of flavonol, in root exudates has a negative effect on nematode infection. Transcriptional regulation mediated by SlMYB genes and the interaction between SlJAZs and SlMYBs contribute to the fine-tuning of kaempferol levels and the trade-off between lateral root development and nematode susceptibility.
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
Biotechnology & Applied Microbiology
M. S. Soliman, M. M. El-Deriny, D. S. S. Ibrahim, H. Zakaria, Y. Ahmed
Summary: The study demonstrates that Arthrobotrys oligospora has significant suppressive and predacious effects against root-knot nematode, M. incognita, while also promoting plant growth.
JOURNAL OF APPLIED MICROBIOLOGY
(2021)
Article
Plant Sciences
Marcos Fernando Basso, Isabela Tristan Lourenco-Tessutti, Clidia Eduarda Moreira-Pinto, Reneida Aparecida Godinho Mendes, Debora Goncalves Pereira, Adriana Grandis, Leonardo Lima Pepino Macedo, Amanda Ferreira Macedo, Ana Cristina Meneses Mendes Gomes, Fabricio Barbosa Monteiro Arraes, Roberto Coiti Togawa, Marcos Mota do Carmo Costa, Francismar Correa Marcelino-Guimaraes, Maria Cristina Mattar Silva, Eny Iochevet Segal Floh, Marcos Silveira Buckeridge, Janice de Almeida Engler, Maria Fatima Grossi-de-Sa
Summary: The overexpression of the GmEXPA1 gene in soybean reduces susceptibility to root-knot nematodes by increasing root lignification. Transgenic lines of Arabidopsis thaliana and Nicotiana tabacum overexpressing GmEXPA1 showed reduced susceptibility to the nematode, without affecting plant growth or yield. The transgenic lines of tobacco also exhibited upregulation of genes involved in ethylene and lignin biosynthesis, along with higher lignin content.
PLANT CELL REPORTS
(2023)
Article
Agronomy
Katherine Brown, Jesse Kelly, Travis R. Faske
Summary: Pydiflumetofen, a fungicide, was tested as a seed treatment in soybean to control fungal diseases and plant-parasitic nematodes. The study found that pydiflumetofen had no toxic effect on M. incognita and did not suppress its infection of host roots. The results showed that pydiflumetofen had no discernible impact on the motility or infectivity of M. incognita.
Article
Environmental Sciences
Raman Tikoria, Arvinder Kaur, Puja Ohri
Summary: This study demonstrates the significant role of vermicompost in reducing nematode stress and enhancing plant growth. By increasing various physiological parameters and regulating plant metabolism, vermicompost can help plants cope with and overcome nematode stress.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Plant Sciences
Abolfazl Hajihassani, Josiah Marquez, Moges Woldemeskel, Negin Hamidi
Summary: Meloidogyne incognita, the most predominant plant-parasitic nematode species of tomato, causes significant yield loss. Four naturally occurring virulent populations of M. incognita were found in vegetable fields in Georgia. These populations were able to reproduce on tomato cultivars with the Mi-1 gene, indicating resistance-breaking capabilities.
Article
Agronomy
Christianna Meidani, Eleni Giannoutsou, Konstantinos Telioglanidis, Nikoletta G. Ntalli, Ioannis-Dimosthenis S. Adamakis
Summary: The study revealed that in tomato plants, PIN1 disappeared in giant cells after being infected by Meloidogyne incognita, indicating the maintenance of a local auxin maxima. This phenomenon could be attributed to the nematodes' nutritional needs throughout its life cycle or the differential responses of tomato plants to M. incognita infection.
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2021)
Article
Zoology
Nourhan M. M. Hassnin, Ali H. H. Ali, Hosny H. Kesba
Summary: The host response of cucurbit hybrids and watermelon hybrids to Meloidogyne incognita was examined. The rootstocks were highly resistant or resistant, while the scions were moderately susceptible. Grafted watermelon hybrids showed varying reactions to nematode infection. The expression of ClabZIP59 and ClabZIP52 genes was significantly upregulated in nematode infected treatments compared to the check. Analysis of root exudates revealed different compositions, with terpenoids and fatty acids being the major compounds in resistant and moderately resistant cultivars, respectively.
PAKISTAN JOURNAL OF ZOOLOGY
(2023)