Spatial ecology of soil nematodes: Perspectives from global to micro scales

Liu, Ting; Hu, Feng; Li, Huixin

doi:10.1016/j.soilbio.2019.107565

Cited by 56 publications

(38 citation statements)

References 131 publications

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“…Current physical and chemical analysis of chicken, cow and sheep manures revealed high percent of organic matter (68.19, 68.36 and 67.85, respectively), organic carbon (39.62,39.69 and 38.66, respectively), phosphorus (0.73,0.41 and 0.42, respectively), pH (8.41,9.32 and 7.95, respectively) and NPK(1.1: 0.8: 0.5 ; 0.6: 0.4: 0.5 and 0.7: 0.3: 0.9) ( Table 1). In temperate and forest soils, several manure components like organic carbon (C), pH, and water play determined factors in the distribution of soil nematodes (Liu et al, 2019). Manures are claimed to improve plant growth by providing nutrients, stimulating growth, enhancing flowering and fruiting, increasing beneficial microbes and controlling diseases and pests (Stewart-Wade, 2020).…”

Section: Discussionmentioning

confidence: 99%

Application of Animal Manure and Plant Growth- Promoting Rhizobacteria as Effective Tools to Control Soil Nematode Population and Increase Crop Yield in Grapevine Orchards

El-Ashry

2021

Egyptian Journal of Agronematology

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A survey of nematode community in grapevine plantations grown in Belbes, Sharqia, Egypt revealed the presence of nine plant-parasitic nematodes genera namely Aphelenchus, Criconemoides, Ditylenchus, Helicotylenchus, Pratylenchus, Meloidogyne, Longidorus, Tylenchus and Tylenchorhynchus; free-living nematodes (FLNs) belonging to the genus Rhabditis and predacious nematodes (PNs) belonging to order Mononchida. Nematodes were found with a different frequency of occurrence and population density. Pratylenchus gained a high population density (PD) followed by Tylenchus, Meloidogyne and Helicotylenchus. A higher prominence value (PV) was found with genus Pratylenchus (190.75) while, the genera Meloidogyne, Tylenchorhynchus and Tylenchus were found with moderate prominence values. Animal manures are effective tools in sustainable soil health and agricultural systems. Therefore, the influence of three livestock manures as feasible practices with BECTO Grow Roots®, a commercial plant growth-promoting bacterium (PGPB) on nematode community and plant growth and fruit yield of grapes, Vitis vinifera L. cv. Flame was undertaken. Soil samples were collected at five-time intervals. Composted animal manures significantly (P ≤ 0.05) minified numbers of plant-parasitic nematodes (PPNs). The greatest effect was recorded with oxamyl after two months of treatments followed by chicken, sheep and cow manure. Conversely, at four and five months after application, animal manures were the most effective. Moreover, a noticeable abundance of FLNs and PNs numbers was detected. The highest increment was achieved in soil amended with chicken manure followed by sheep and cow manure whereas oxamyl reduced numbers of FLNs and PNs as compared with untreated vines. Application of manures against PPNs particularly M.incognita decreased numbers of J 2 /250/soil in vines amended with chicken, cow and sheep manure, respectively and increased numbers of FLNs and PNs. Population densities of M.incognita J 2 /250 g soil were significantly minimized (1.55 J 2 /250 g soil) in blocks amended with commercial rhizobacteria and chicken manure. Maximum total fruit weight and leaf numbers were achieved in vines treated with rhizobacteria +chicken, cow and sheep manure, respectively. This study proved that composted chicken, cow and sheep manure applied alone or in combination with PGPB can be a promising tool for the management of phytoparasitic nematodes, enrichment of FLNs and PNs and improvement of plant growth and grapevine yield.

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Section: Discussionmentioning

confidence: 99%

Application of Animal Manure and Plant Growth- Promoting Rhizobacteria as Effective Tools to Control Soil Nematode Population and Increase Crop Yield in Grapevine Orchards

El-Ashry

2021

Egyptian Journal of Agronematology

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“…Nematodes were counted using a De Grisse counting dish (De Grisse, 1963) and identified to genus level using an Olympus BX53F microscope. Taxonomic classification was based on Maggenti et al (1988) and Geraert (2019) for Tylenchina; Kleynhans et al (1996) for Heteroderidae; Hunt (1993) for Aphelenchida; Decraemer (1995) and Duarte et al (2010) for Trichodoridae; Andrássy (2009) for Dorylaimidae; and Andrássy (2005Andrássy ( , 2007 for other free-living nematodes. Feeding groups were assigned, based on Yeates et al (1993), as herbivores (He), bacterivores (Ba), fungivores (Fu), omnivores (Om), or predators (Pr).…”

Section: Nematode Extraction Preservation and Identificationmentioning

confidence: 99%

“…Nematodes occupy most terrestrial habitats on earth ( Liu et al, 2019 ), even the furthest reaches of caves ( Du Preez et al, 2017 ) and deep underground mines ( Borgonie et al, 2011 ). Estimates also indicate that nematodes represent 80% of all multicellular organisms ( Eisenhauer and Guerra, 2019 ; Van Den Hoogen et al, 2019 ).…”

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confidence: 99%

Nematodes and the effect of seasonality in grassland habitats of South Africa

Girgan

Preez

Marais

et al. 2020

Journal of Nematology

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Nematodes in South Africa have mainly been studied for their diversity and agricultural importance. However, the ecological status of nematodes and the effect of seasonal variation in local grasslands remain unknown. For this reason, a nematode study was conducted in the Telperion Nature Reserve and represented the first ecological study in a natural grassland area in South Africa. In total, 104 soil samples were collected during four consecutive seasons from 2015 until 2016 in three habitats, viz. (i) open grassland, (ii) shrubland with rocky outcrops, and (iii) riparian zone. From these the nematode community structure and soil ecosystem status were studied. In total, 93 genera from 50 families were recorded with herbivores and bacterivores being the most abundant trophic groups in all three habitats. Linear mixed models revealed that season had an overwhelmingly dominant impact on the condition, food web status, and functioning of the soil ecosystems with pairwise comparisons indicating that significantly higher values were recorded during winter. Interestingly, this seasonal shift can largely be attributed to fluctuations in the populations of only a few nematode groups (namely Aporcelaimellus, Dorylaimidae, Iotonchus, and Mononchus) with high colonizer-persister values. Although the reason for the higher abundance of specific nematode groups recorded during the winter is not explicitly clear, it is possibly linked to reduced competition from other soil fauna. This study clearly shows that further investigations are required to better understand the dynamics of grassland ecosystems.

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“…Such physical and chemical soil properties have a strong influence on the vertical flow of water by playing a crucial function in soil biotic community composition, density, and diversity (Kidron & Yair, 2001;Guan et al, 2015;Siebert et al, 2019). Soil nematode community is known to be among the important components of soil fauna, by being of great abundance (>3 million m -2 at some sites) (Yeates, 2003;Liu et al, 2019). Moreover, due to their feeding behavior they can be divided into at least five trophic groups or functional guilds (Yeates et al, 1993;Hu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Soil nematode community is known to be among the important components of soil fauna, by being of great abundance (>3 million m -2 at some sites) ( Yeates, 2003 ; Liu et al ., 2019 ). Moreover, due to their feeding behavior they can be divided into at least five trophic groups or functional guilds ( Yeates et al ., 1993 ; Hu et al ., 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Vertical distribution of soil free-living nematode in a playa habitat in the North-Western Negev desert, Israel

Pen-Mouratov

Steinberger

2020

Helminthologia

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SummaryIn order to investigate the vertical distribution of soil nematode community under a playa area in the Nizzana inter-sand dune area in the north-western Negev Desert of Israel, soil samples were collected from 0 – 10, 10 – 20, 20 – 30, 30 – 40, and 40 – 50 cm depths in the playa and loessial plain area (as control) during the dry and wet seasons. Each of soil samples was determined for soil moisture, organic matter concentration, electrical conductivity, and nematode community structure and biodiversity. The results revealed that soil moisture, organic matter, electrical conductivity, total nematode abundance and trophic groups were significantly influenced by sampling positions (P < 0.0001) and depths (P < 0.05) and significant interaction effect of position and depth (P < 0.05) was also found. Total number of nematodes in the playa area ranged from 1 to 15 individuals per 100 g dry soil, whereas they ranged from 60 to 631 individuals per 100 g dry soil in the loessial plain area. The greatest nematode number was found in 0 – 10 cm soil depth and the lowest nematode number was found in 40 – 50 cm soil depth. Total number of nematodes, bacterivores, fungivores, plant parasites and omnivores-predators were significantly (P < 0.05) greater in the loessial plain area than that in the playa area in all sampling depths under the dry and wet seasons. Total thirteen genera were found in the playa area, with Acrobeloides as the dominant genus, whereas there were fifty-five genera, with Acrobeles as the dominant genus in the loessial plain area. Nematode ecological indices, such as fungivores/bacterivores ratio (F/B), nematode channel ratio (NCR), trophic diversity (T), Shannon Index (H’), genus dominance (λ), species richness (SR), maturity index (MI), modified maturity index (MMI), Enrichment Index (EI) and Structure Index (SI) were significantly (P < 0.01) differentiated between sampling locations. As conclusion, soil free-living nematode inhabited mostly the upper soil layers (0 – 20 cm) and the number of nematode had gradually decreasing trend with soil depths increasing in the playa area. Moreover, each soil layer had a little nematode abundance and community diversity in the playa area in contrast to loessial plain area during the dry and wet seasons. Sampling sites and depths significantly effected on soil properties, nematode abundance and trophic groups, but nematode ecological indices were affected only by sampling sites.

show abstract

Spatial ecology of soil nematodes: Perspectives from global to micro scales

Cited by 56 publications

References 131 publications

Application of Animal Manure and Plant Growth- Promoting Rhizobacteria as Effective Tools to Control Soil Nematode Population and Increase Crop Yield in Grapevine Orchards

Application of Animal Manure and Plant Growth- Promoting Rhizobacteria as Effective Tools to Control Soil Nematode Population and Increase Crop Yield in Grapevine Orchards

Nematodes and the effect of seasonality in grassland habitats of South Africa

Vertical distribution of soil free-living nematode in a playa habitat in the North-Western Negev desert, Israel

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