scholarly journals Characterization of the Soil Nematode Fauna of Makerere Hill, Kampala, Uganda

2019 ◽  
Vol 11 (6) ◽  
pp. 70-84
Author(s):  
S. O. Nzeako ◽  
H. Talwana ◽  
E. Teye ◽  
I. Sekanjako ◽  
J. Nabweteme ◽  
...  
Keyword(s):  
Soil Nematode ◽  
Nematode Fauna

scholarly journals Soil Nematode Fauna in Dokdo Island of Korea

2012 ◽  
Vol 18 (4) ◽  
pp. 381-386 ◽  
Author(s):  
Dong-Geun Kim ◽  
Byung-Yong Park ◽  
Young-Hyun Ryu
Keyword(s):  
Soil Nematode ◽  
Nematode Fauna

Soil nematode fauna of a subarctic heath: potential nematicidal action of plant leaf extracts

1998 ◽  
Vol 7 (2) ◽  
pp. 111-124 ◽  
Author(s):  
Liliane Ruess ◽  
Anders Michelsen ◽  
Inger K. Schmidt ◽  
Sven Jonasson ◽  
John Dighton
Keyword(s):  
Soil Nematode ◽  
Leaf Extracts ◽  
Plant Leaf ◽  
Nematode Fauna

The response of soil nematode fauna to climate drying and warming in Stipa breviflora desert steppe in Inner Mongolia, China

2020 ◽  
Vol 20 (4) ◽  
pp. 2166-2180 ◽  
Author(s):  
Guogang Zhang ◽  
Xin Sui ◽  
Yang Li ◽  
Meiqing Jia ◽  
Zhongwu Wang ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
Soil Nematode ◽  
Desert Steppe ◽  
Nematode Fauna

scholarly journals Characterization of soil nematode communities in three cropping systems through morphological and DNA metabarcoding approaches

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Amy M. Treonis ◽  
Samantha K. Unangst ◽  
Ryan M. Kepler ◽  
Jeffrey S. Buyer ◽  
Michel A. Cavigelli ◽  
...  
Keyword(s):  
Cropping Systems ◽  
Soil Nematode ◽  
Nematode Communities ◽  
Dna Metabarcoding ◽  
Soil Nematode Communities

scholarly journals Suppression of plant parasitic nematodes in pastoral soils amended with chitin

2000 ◽  
Vol 53 ◽  
pp. 44-47 ◽  
Author(s):  
N.L Bell ◽  
R.N. Watson ◽  
S.U. Sarathchandra
Keyword(s):  
Plant Growth ◽  
Sandy Soil ◽  
Perennial Ryegrass ◽  
White Clover ◽  
Parasitic Nematodes ◽  
Soil Nematode ◽  
Plant Parasitic Nematodes ◽  
Plant Parasitic ◽  
Nematode Fauna

White clover and perennial ryegrass plants were grown in pots containing a sandy soil amended with chitin Soil nematode numbers were examined after 6 weeks of plant growth Amendment with chitin significantly reduced the abundance of Heterodera trifolii in white clover roots and Pratylenchus sp in perennial ryegrass roots Abundance of Paratrichodorus minor was significantly reduced by chitin amendment compared to unamended controls The total nematode fauna responded to chitin amendment with large increases in abundance

scholarly journals Expression, Purification, and Functional Characterization of Atypical Xenocin, Its Immunity Protein, and Their Domains from Xenorhabdus nematophila

2013 ◽  
Vol 2013 ◽  
pp. 1-9
Author(s):  
Jitendra Singh Rathore
Keyword(s):  
Protein Complexes ◽  
Functional Characterization ◽  
Single Step ◽  
Soil Nematode ◽  
Xenorhabdus Nematophila ◽  
Toxic Activity ◽  
Immunity Protein ◽  
The Family ◽  
Receptor Domain

Xenorhabdus nematophila, a gram-negative bacterium belonging to the family Enterobacteriaceae is a natural symbiont of a soil nematode from the family Steinernematidae. In this study cloning, expression, and purification of broad range iron regulated multidomain bacteriocin called xenocin from X. nematophila (66 kDa, encoded by xcinA gene) and its multidomain immunity protein (42 kDa, encoded by ximB gene) have been done. xcinA-ximB (N′ terminal 270 bp), translocation, and translocation-receptor domain of xcinA, ximB, and its hemolysin domain were cloned, expressed, and purified by single step Ni-NTA chromatography under native conditions. In the functional characterization, neutralization of xcinA toxicity by immunity domain of ximB gene was determined by endogenous assay. Exogenous toxic assays results showed that only the purified recombinant xenocin-immunity domain (10 kDa) protein complex had toxic activity. Atypical cognate immunity protein (42 kDa) of xenocin was fusion of immunity domain (10 kDa) and hemolysin domain (32 kDa). In silico analysis of immunity protein revealed its similarity with hemolysin and purine NTPase like proteins. Hemolytic activity was not observed in immunity protein or in its various domains; however, full-length immunity protein lacking Walker motif showed ATPase activity. Finally, using circular dichroism performed secondary structural analyses of all the recombinant proteins/protein complexes.

scholarly journals Nicienie glebowe w Parku Skaryszewskim – porównanie zagęszczenia i różnorodności zespołów w dwóch typach siedlisk

2015 ◽  
Vol 13 (3) ◽  
pp. 119-133
Author(s):  
Krassimira Ilieva-Makulec
Keyword(s):  
Trophic Structure ◽  
Soil Nematode ◽  
Trophic Groups ◽  
Dominant Group ◽  
Nematode Communities ◽  
Composition And Structure ◽  
Plant Feeders ◽  
Nematode Fauna

This paper deals with the soil nematode fauna in the Skaryszewski Park (Warsaw, Poland). I compared the density, the composition and structure of domination of the nematode genera, as well as the nematode trophic structure in the two typical for thepark habitats - in soil of lawns and soil of tree plantings. The results indicate that nematode communities in the soil of tree plantings were more numerous (nearly 1.5 million ind. m-2) than in the soil of lawns (600 thousand. m-2). However, the number and the diversity of the nematode genera in the soil of the lawns (26 genera, H '= 2.80) were higher than in the soil of tree plantings (22 genera, H' = 2.27). In total 33 nematode genera were found, and only 15 of them were common for the both habitats. The degree of generic similarity between the habitats was 63%. Some differences in the nematode trophic groups structure were also noticed. Although bacterial-feeding nematodes were the dominant group in both habitats, their percentage in the soil of trees was much higher than in the soil of lawns, respectively 70 and 49%. However in soil of lawns the share of plant feeders was 10 times higher than in the soil of tree plantings. On the basis of the results an attempt to assess the conditions of the soil in the two habitats was done.

Response of soil nematode fauna to naturally elevated CO2 levels influenced by soil pattern

Nematology ◽  
1999 ◽  
Vol 1 (3) ◽  
pp. 285-293 ◽  
Author(s):  
Paul C.D. Newton ◽  
Gregor W. Yeates ◽  
Des J. Ross
Keyword(s):  
Co2 Enrichment ◽  
Co2 Concentration ◽  
Organic Soil ◽  
Atmospheric Co2 ◽  
Organic Soils ◽  
Soil Nematode ◽  
Microbial Carbon ◽  
General Response ◽  
Nematode Fauna

Abstract As experimental elevation of CO2 in short-term experiments may produce organic matter with decomposition characteristics different from those produced under long-term equilibrated conditions, we sampled the soil nematode fauna near a natural CO2 vent in Northland, New Zealand. Various indices of the nematode fauna showed significant effects, with all being significantly correlated with soil pH, microbial carbon and atmospheric CO2 across the 33 sampling points. There was a general decrease in nematode abundance and diversity, but an increase in dominance and proportion of bacterial-feeding nematodes with increasing atmospheric CO2 concentration. However, when the nematode data from gley and organic soils present at the site were differentiated most of the significant correlations were with soil microbial carbon; they were positive in the organic soil but negative in the gley soil. That these responses can be related to soil carbon and to microbial carbon demonstrates that any general response to long-term CO2 enrichment represents an integration of specific responses by the soil biota in the various soils present. Die Reaktion der Bodennematodenfauna auf durch Bodenbedingungen beeinflusste naturlich erhohte CO2-Werte - Da eine experimentelle Erhohung von CO2 in Kurzzeitversuchen organisches Material erzeugen konnte, das andere Zersetzungseigenschaften hat als das unter ausgeglichenen Langzeitbedingungen entstehende, haben wir die Nematodenfauna in Bodenproben aus der Nahe eines naturlichen CO2-Austrittes in Northland, Neuseeland untersucht. Bei mehreren Kennzeichen der Nematodenfauna zeigten sich deutliche Wirkungen, die alle signifikant korreliert waren mit dem Boden-pH, dem mikrobiellen Kohlenstoff und dem atmospharischen CO2, und zwar quer durch alle 33 Entnahmestellen. Mit steigender Konzentration des atmospharischen CO2 trat eine allgemeine Abnahme der Haufigkeit und der Verschiedenartigkeit der Nematoden ein, aber eine Zunahme der Vorherrschaft und des Anteils bakterienfressender Nematoden. Wenn aber die Nematodenwerte von an einer Entnahmestelle vorhandenen Gley- und organischen Boden vergleichen wurden, bestanden die meisten der signifikanten Beziehungen mit dem mikrobiellen Kohlenstoff. Sie waren positiv im organischen Boden und negativ im Gleyboden. Die Tatsache, dass diese Reaktionen zum Bodenkohlenstoff und dem mikrobiellen Kohlenstoff in Beziehung gebracht werden konnen zeigt, dass jede allgemeine Reaktion auf eine langfristige Anreicherung von CO2 eine Integration spezischer Reaktionen durch die in den verschiedenen Boden vorhandenen biotischen Faktoren darstellt.

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