Plant-parasitic nematodes affecting vegetable crops in greenhouses

Abstract

This work focuses on investigating plant-parasitic nematodes that affect greenhouse vegetables. The study took place in the Rostov region (Russian Federation) between May 2019 and May 2020 and involved 180 samples of soil and roots of 30 different vegetables in the families Cucurbitaceae (6), Solanaceae (8), Umbelliferae (8), Lamiaceae (4) and Allioideae (4) from 20 intensive farming locations. In this study, 11 nematode genera were detected. The most common genus was Meloidogyne, followed by Helicotylenchus, Pratylenchus, and Scutellonema. The highest Meloidogyne densities were detected in cucumbers, green peppers, carrots, eggplants, basil, and celery. Onions were not infected with Meloidogyne at all. Plant diseases caused by Pratylenchus, Scutellonema and Helicotylenchus were present in 29.7%, 51.5% and 81.6% of all crops examined, respectively. Xiphinema were found exclusively in carrots and celery, while Ditylenchus were only present in tomatoes and carrots (for each, the prevalence was 2.1%). The relative abundance of Meloidogyne, Helicotylenchus, and Pratylenchus was 58.3%, 10.4%, and 2.1%, respectively. As regards other genera, the relative abundance was less than 1%. The results show that soil properties are as important for the abundance, distribution and structure of the plant-parasitic nematode communities as the host plant. Findings may be helpful in improving the vegetable pest controls.

Plant-Parasitic Nematodes Associated with Certain Fruit Trees and Vegetable Crops in the North Eastern Egypt

“…Nematodes, either alone or in conjunction with other soil microbes, harmed nearly every component of the plant, including roots, stems, leaves, fruits, and seeds. Nematode infection can lead to secondary infection with fungal and bacterial pathogens and even transmission of plant-infecting viruses that negatively affect the yield quantity (Tileubayeva et al, 2021). The most typical indications of nematode infection are reduced root development, symptoms that resemble symptoms of mineral deficiencies, and perpetual plant mortality.…”

“…The most typical indications of nematode infection are reduced root development, symptoms that resemble symptoms of mineral deficiencies, and perpetual plant mortality. Stunted growth, decreased yield, and leaf chlorosis is some of the indirect and relatively minor indications of nematode infection in terrestrial plants (Tileubayeva et al, 2021). Plant-parasitic nematodes cause an annual loss of 12.3% of 40 major crops on a global scale.…”

Meloidogyne enterolobii risk to agriculture, its present status and future prospective for management

“…The root-knot nematodes (RKN), are considered one of the most pathogenic PPN ( Sikandar et al., 2019 ). These parasites are economically significant and one of the most destructive pests of vegetables and other crops ( Tileubayeva et al., 2021 ). Root-knot nematodes are obligate endoparasites that live in the roots of more than 3,000 different plant species ( Sikandar et al., 2020a ).…”

Optimizing the conditions of anaerobic fermentation in pig manure to produce volatile fatty acids and its efficiency in killing root-knot nematodes

“…These nematodes have a wide range of hosts and can infect more than 3,000 plants (Jaouannet et al 2013). Root-knot nematodes mainly form nodular root knots by invading wounds (Mitchum et al 2013); they destroy the root structure of plants, absorb plant nutrients, and affect plant metabolism (Tileubayeva et al 2021), resulting in a reduction in crop yield by 10% to 20% and even up to 75% in severe cases (Peiris 2021). Root-knot nematodes could cause 100 billion U.S. dollars economic crop losses each year worldwide (Khan and Kim 2007;Li et al 2015).…”