Biological suppression of the root-knot nematode Meloidogyne incognita following winter cover crops in conservation tillage cotton

Timper, Patricia; Strickland, Timothy C.; Jagdale, Ganpati B.

doi:10.1016/j.biocontrol.2020.104525

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…Omnivores and Carnivores are soil nematode groups that promotes the micro-regulation process by reducing herbivore nematodes and other protists' abundance. They also play an important role into the organic matter decomposition rate by controlling other soil organisms (e.g., Bacteria, Fungi, and even other soil nematodes) (Timper et al 2021). They are extremely in uenced by changes into the soil ecosystem promoted by land use and climate type because they are dependent of a complex soil food web (e.g., presence of other nematodes, and microbiota groups), such as we have found in the natural ecosystem (Wu et al 2021).…”

Section: Discussionmentioning

confidence: 99%

Impact of ecological stages on the soil microbiota and soil abiotic factors in tropical and subtropical Brazilian regions

de Souza,

da Silva,

Laurindo

et al. 2023

Arch Microbiol

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Land uses in uence soil microbiota and soil abiotic traits in the Brazilian Tropical and Subtropical ecoregions. Our aim was to test if different land uses may in uence the soil microbiota and the soil chemical properties in agroforestry systems (AF), unassisted forest restoration (UFR), and natural ecosystem (Ne) located at Tropical and Subtropical ecosystems from North-eastern and Southern, Brazil, respectively. We have used the joint analysis of a series of experiments in a randomized block design. In the three land uses, we collected soil samples to determine arbuscular mycorrhizal fungi community, soil nematode, soil pH, available P, and soil organic carbon (SOC) from January 2018 to January 2022 using a semestral schedule. Soil microbiota richness in the AF and Ne was similar in the tropical ecosystem.The PCA analysis showed SOC, soil pH, Fungivores, Bacterivores, Racocetra coralloidea, Dentiscutata scutata, and D. erythrophus as the main factors contributing to the variance of the samples. Differences were associated with (1) the land uses by promoting different habitat, as we found difference on soil microbiota abundance, and diversity as affected by habitat simpli cation, and (2) changes in soil pH, SOC, and available P. These results contribute to a deeper view of the soil microbiota community composition in different land uses from two Brazilian ecosystems. Our work increases the understanding of the soil microbiota com-munity structure in the rhizosphere of AF and Ne in tropical and subtropical ecosystems.

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Section: Discussionmentioning

confidence: 99%

Impact of ecological stages on the soil microbiota and soil abiotic factors in tropical and subtropical Brazilian regions

de Souza,

da Silva,

Laurindo

et al. 2023

Arch Microbiol

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“…In contrast, predators are vital natural enemies that can reduce populations of plantdamaging pests. For instance, predator dorylaimid nematodes can feed on several Meloidogyne species (Timper et al 2021). Weeds maintain many of these nematode species inside their roots or soils around their roots.…”

Section: Introductionmentioning

confidence: 99%

Nematode Fauna Associated with Weeds in Vineyards in Aegean region of Türkiye

ŞİN,

ÖZTÜRK

2023

Manas Journal of Agriculture Veterinary and Life Sciences

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Surveys were carried out between the years 2021-2022 to determine the nematode hosts of weeds in the vineyard areas of Izmir and Manisa provinces in the Aegean Region. Fifty-five weeds belonging to different families, Asteraceae, Apiaceae, Brassicaceae, Fabaceae, Geraniaceae, Lamiaceae, and Poaceae, were identified in vineyards. In the study, 19 genera of free-living and 17 genera of plant feeder nematode species were extracted from the roots and rhizosphere soil of weeds. The detected nematode species were divided into herbivores, fungivores, omnivores, bacterivores, and predators. The majority of plant parasitic nematodes consisted of ectoparasitic species. On the other hand, Meloidogyne species were prominent among the plant parasitic nematode genera detected, and Amaranthus retroflexus L., Anagallis arvensis L., Cynodon dactylon (L.) Pers., Chenopodium album L., Eleusine indica (L.) Gaertn, Gallium aparine L., Heliotropium europaeum L., Lepidium draba L., Lamium amplexicaule L., Lactuca serriola L., Portulaca oleracea L. were identified as hosts. Pratylenchus neglectus, P. thornei, Longidorus elongatus, and Ditylenchus dipsaci were other economically important nematode species identified from the root zone of weeds. Bacterial feeder Cephalobus, omnivore Mesodorylaimus, and plant-parasitic Geocenamus brevidens had the highest populations counted as 61, 81, and 22 in 100 cm3 soil in survey areas, respectively.

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“…Certainly, many organisms could be part of the Meloidogyne sp. combat, such as bacteria and fungi communities (Timper et al, 2021), emphasizing the potential of soil microbiome to avoid PPN diseases. Eventually, Bacillus amyloliquefaciens and Trichoderma asperellum are commonly known to be applied in many biocontrol cases, such as controlling phytopathogenic fungi, bacteria, and nematodes (Harman et al, 2004;Lorito et al, 2010;Chowdhury et al, 2015;Rivera-Méndez et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Effects of Trichoderma asperellum BV10 and Bacillus amyloliquefaciens BV03 in Meloidogyne incognita Control Considering Three Different Management Systems

Muniz¹,

Silva²,

Nishisaka³

et al. 2022

JAS

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Crop yield decrease is the main concern when a pathogen or plague is identified in an agriculture field. Thus, part of this issue can be attributed to plant-parasitic nematodes (PPNs), such as Meloidogyne species, due to, most of the time, the hard diagnosis, and non-specific symptoms. Its management is mainly based on chemical pesticides, followed by a few potential biological control agents, and the management system. Therefore, this study aimed to evaluate the effects of biological agents in Meloidogyne incognita control in different soil systems. For that, two biological products were chosen, Trichoderma asperellum BV10 and Bacillus amyloliquefaciens BV03, and soils were sampled from three different managements systems: (i) soybean no-tilled system at Goiás state, Brazil; (ii) forest soil at Goiás state, Brazil, and (iii) soybean conventional managed system at Mato Grosso do Sul state, Brazil. Biocontrol and growth promotion effects, volatile organic compounds (VOCs) and soil respiration were determined in vegetation house and laboratory, respectively. As a result, both BV10 and BV03 had significant nematode control activity, comparing to control treatment, in all the three soils systems. Plus, the number of immobile nematodes by potential VOCs had significant increase when BV03 was applied, while the application of BV10 agent raised the soil respiration rate. In conclusion, both biocontrol agents presented great efficiency in control M. incognita, with better performance of BV03. Lastly, more studies must be done to elucidate how the resident soil microbiome can influence on biocontrol agent establishment and performance, as well as the consequence of the application of biological products on soil microbiome network.

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Biological suppression of the root-knot nematode Meloidogyne incognita following winter cover crops in conservation tillage cotton

Cited by 5 publications

References 27 publications

Impact of ecological stages on the soil microbiota and soil abiotic factors in tropical and subtropical Brazilian regions

Impact of ecological stages on the soil microbiota and soil abiotic factors in tropical and subtropical Brazilian regions

Nematode Fauna Associated with Weeds in Vineyards in Aegean region of Türkiye

Effects of Trichoderma asperellum BV10 and Bacillus amyloliquefaciens BV03 in Meloidogyne incognita Control Considering Three Different Management Systems

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