Small-scale microcosms to detect chemical induced changes in soil nematode communities — Effects of crystal proteins and Bt-maize plant material

2014 ◽  
Vol 472 ◽  
pp. 662-671 ◽  
Author(s):  
Sebastian Höss ◽  
Nicola Reiff ◽  
Hang T. Nguyen ◽  
Johannes A. Jehle ◽  
Hanna Hermes ◽  
...  
Keyword(s):  
Plant Material ◽  
Maize Plant ◽  
Small Scale ◽  
Soil Nematode ◽  
Bt Maize ◽  
Nematode Communities ◽  
Crystal Proteins ◽  
Induced Changes ◽  
Soil Nematode Communities

scholarly journals Effect of transgenic insect-resistant maize to the community structure of soil nematodes in two field trials

2015 ◽  
Vol 52 (1) ◽  
pp. 41-49
Author(s):  
A. Čerevková ◽  
L Cagáň
Keyword(s):  
Community Structure ◽  
Food Web ◽  
Field Trials ◽  
Soil Nematode ◽  
Soil Nematodes ◽  
Soil Food Web ◽  
Bt Maize ◽  
Maize Hybrid ◽  
Nematode Communities ◽  
Soil Nematode Communities

Summary The aim of this study was to determine the effects of Bt maize hybrid cultivation on soil nematode communities in two field trials, as well as to analyse other factors (fertilisation and moisture) responsible for the community structure of soil nematodes. Nematode communities were studied in maize plots at the locality of Borovce in western Slovakia. During 2012 and 2013, hybrids DK440 and DKC3871 (conventional) or DKC4442YG and DKC3872YG (Bt maize, event MON810) were sown in 10 repetitions each. Nematodes were extracted from soil samples collected at the maize flowering (July 11, 2012 and July 30, 2013). Altogether, 39 nematode species belonged to 35 genera were identified in two maize variants. The dominant taxa in both variants were Acrobeloides nanus, Ce-phalobus persegnis, Aphelenchoides composticola, Aphelenchus avenae, Eudorylaimus carteri and Filenchus vulgaris. Calculation of the maturity index, plant parasitic index, enrichment index and structure index did not confirm any clear influence of year or hybrid type on soil nematode communities. The proportional representation of cp-1, cp-2 and cp-3-5 groups of nematode fauna indicated conditions of low stability and high stress. Faunal profiles representing the structure and enrichment conditions of the soil food web showed an environment with a high C:N ratio and high levels of fungal feeders. Based on the calculation of the metabolic footprint of nematodes in the soil food web, a difference between the isoline maize variant and Bt maize variant in 2012 was found, but this difference was not readily apparent in 2013. The occurrence of nematodes, their abundance, proportion of feeding types and selected ecological indices did not depend on the type of maize hybrid (Bt or non-Bt). Thus, the cultivation of genetically modified maize did not directly influence nematode populations. The application of fertiliser at certain periods does not influence the nematode community. The observed significant higher abundance of nematodes was correlated with soil moisture.

The responses of soil nematode communities to Bt maize cultivation at four field sites across Europe

2018 ◽  
Vol 119 ◽  
pp. 194-202 ◽  
Author(s):  
Andrea Čerevková ◽  
Dana Miklisová ◽  
Márton Szoboszlay ◽  
Christoph C. Tebbe ◽  
Ľudovít Cagáň
Keyword(s):  
Soil Nematode ◽  
Bt Maize ◽  
Nematode Communities ◽  
Maize Cultivation ◽  
Soil Nematode Communities

Carbofuran effects in soil nematode communities: Using trait and taxonomic based approaches

2011 ◽  
Vol 74 (7) ◽  
pp. 2002-2012 ◽  
Author(s):  
Sónia Chelinho ◽  
Klaus Dieter Sautter ◽  
Anabela Cachada ◽  
Isabel Abrantes ◽  
George Brown ◽  
...  
Keyword(s):  
Soil Nematode ◽  
Nematode Communities ◽  
Soil Nematode Communities

scholarly journals Soil nematode communities associated with hazelnut orchards in Turkey

2014 ◽  
Vol 6 (8) ◽  
pp. 112-121 ◽  
Author(s):  
Akyazi Faruk ◽  
Yildiz Senol ◽  
Firat Felek Anil
Keyword(s):  
Soil Nematode ◽  
Nematode Communities ◽  
Soil Nematode Communities

scholarly journals Application of PCR-DGGE method for identification of nematode communities in pepper growing soil

2016 ◽  
Vol 7 (1) ◽  
pp. 9-14
Author(s):  
Duong Duc Hieu
Keyword(s):  
Maximum Likelihood ◽  
Community Sample ◽  
Nematode Species ◽  
Viet Nam ◽  
Soil Nematode ◽  
Nematode Communities ◽  
Maximum Likelihood Tree ◽  
Relationship Of ◽  
First Time ◽  
Soil Nematode Communities

Soil nematodes play an important role in indication for assessing soil environments and ecosystems. Previous studies of nematode community analyses based on molecular identification have shown to be useful for assessing soil environments. Here we applied PCR-DGGE method for molecular analysisoffive soil nematode communities (designed as S1 to S5) collected from four provinces in Southeastern Vietnam (Binh Duong, Ba Ria Vung Tau, Binh Phuoc and Dong Nai) based on SSU gene. By sequencing DNA bands derived from S5 community sample, our data show 15 species containing soil nematode, other nematode and non-nematode (fungi) species. Genus Meloidogyne was found as abundant one. The genetic relationship of soil nematode species in S5 community were determined by Maximum Likelihood tree re-construction based on SSU gene. This molecular approach is applied for the first time in Vietnam for identification of soil nematode communities. Tuyến trùng đất đóng vai trò chỉ thị quan trọng trong công tác đánh giá môi trường và hệ sinh thái đất. Các nghiên cứu trước đây đã cho thấy lợi ích của việc phân tích cộng đồng tuyến trùng đất bằng định danh sinh học phân tử đối với việc đánh giá môi trường đất. Ở đây, chúng tôi ứng dụng phương pháp PCR-DGGE dựa trên gene SSU để phân tích năm (ký hiệu từ S1 đến S5) cộng đồng tuyến trùng đất thuộc các vùng trồng chuyên canh cây hồ tiêu ở miền nam Việt Nam (Bình Dương, Bà Rịa Vũng Tàu, Bình Phước và Đồng Nai). Bằng cách giải trình tự các vạch của mẫu tuyến trùng S5, kết quả cho thấy cộng đồng tuyến trùng này có 15 loài gồm nhóm tuyến trùng đất, nhóm các loại tuyến trùng khác và nhóm không phải tuyến trùng (nấm) và trong đó Meloidogyne là giống ưu thế. Mối quan hệ di truyền của các các loài tuyến trùng đất thuộc cộng đồng S5 được xác định bằng việc thiết lập cây phát sinh loài Maximum Likelihood dựa trên gene SSU. Đây là nghiên cứu đầu tiên ở Việt Nam sử dụng kỹ thuật PCR-DGGE để phân tích các cộng đồng tuyến trùng đất trồng hồ tiêu.

scholarly journals Neotyphodium impacts on soil nematode communities: rhizosphere- and litter-mediated interactions

2007 ◽  
Vol 13 ◽  
pp. 107-110
Author(s):  
M. Omacini ◽  
E.J. Chaneton ◽  
C.M. Ghersa
Keyword(s):  
Plant Traits ◽  
Lolium Multiflorum ◽  
Fungal Endophytes ◽  
Patch Dynamics ◽  
Trophic Levels ◽  
Soil Nematode ◽  
Patch Occupancy ◽  
Nematode Communities ◽  
Endophyte Infection ◽  
Soil Nematode Communities

There is a growing recognition that endophyte effects on host plant traits may be propagated through food chains. We studied Neotyphodium occultans effects on soil nematode communities mediated by current and past patch occupancy by endophyteinfected Lolium multiflorum populations. A microcosm experiment was performed to evaluate whether abundance and diversity of nematodes at different trophic levels were affected by endophyte infection through rhizosphere-mediated or littermediated effects. We found that presence of endophyte-infected plants and their aerial litter both triggered a bottom-up trophic cascade enhancing the abundance of herbivorous and predaceous nematode taxa. Endophyte infection also increased overall nematode richness, mostly through changes induced at the highest trophic level in this soil food web. Our results suggest that fungal endophytes can modify the linkages between aboveand belowground community compartments, with potential consequences on plant patch dynamics. Keywords: soil food webs, Lolium multiflorum, Neotyphodium occultans, plant-soil feedback, after-life effects, indirect interactions, trophic cascades

Climate change and land use induce functional shifts in soil nematode communities

Oecologia ◽  
2019 ◽  
Vol 192 (1) ◽  
pp. 281-294 ◽  
Author(s):  
Julia Siebert ◽  
Marcel Ciobanu ◽  
Martin Schädler ◽  
Nico Eisenhauer
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Soil Nematode ◽  
Nematode Communities ◽  
Soil Nematode Communities

Contrasting responses of soil nematode communities to native and non-native woody plant expansion

Oecologia ◽  
2019 ◽  
Vol 190 (4) ◽  
pp. 891-899 ◽  
Author(s):  
Guadalupe Peralta ◽  
Nicole L. Schon ◽  
Ian A. Dickie ◽  
Mark G. St. John ◽  
Kate H. Orwin ◽  
...  
Keyword(s):  
Woody Plant ◽  
Soil Nematode ◽  
Nematode Communities ◽  
Plant Expansion ◽  
Soil Nematode Communities

Exotic plant influences soil nematode communities through litter input

2007 ◽  
Vol 39 (7) ◽  
pp. 1782-1793 ◽  
Author(s):  
Huili Chen ◽  
Bo Li ◽  
Changming Fang ◽  
Jiakuan Chen ◽  
Jihua Wu
Keyword(s):  
Soil Nematode ◽  
Exotic Plant ◽  
Nematode Communities ◽  
Litter Input ◽  
Soil Nematode Communities
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