soil nematode
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2022 ◽  
Vol 170 ◽  
pp. 104258
Author(s):  
Jing Hu ◽  
Guorong Chen ◽  
Wail M. Hassan ◽  
Jianbin Lan ◽  
Wantong Si ◽  
...  

Life ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 102
Author(s):  
Dan Zhao ◽  
Yao Wang ◽  
Ling Wen ◽  
Hongyun Qu ◽  
Zuobiao Zhang ◽  
...  

It is well known that crop monoculture can induce negative effects on soil ecosystems and crop productivity. However, little is known about how vegetable monoculture affects the soil nematode community structure and its relationship with vegetable yields. In this study, the composition, abundance, metabolic footprint, and ecological indices of soil nematodes are investigated in monocultures of pumpkin and melon. The relationships between nematode community structure and yields of pumpkin and melon were analyzed by linear regression. Both monoculture soils of pumpkin and melon suppressed the relative abundance of bacterivores but increased the relative abundance of plant parasites. Pumpkin monoculture soils decreased soil nematode diversity but increased the maturity index of plant parasites. Monoculture soils of pumpkin and melon decreased the metabolic footprint of lower- and higher-level trophic groups of the soil food web, respectively. Pumpkin and melon monoculture soils increased the food web indices channel index (CI) but decreased the enrichment index (EI) and the structure index (SI). The monoculture soils of pumpkin and melon led to a more fungal-dominated decomposition pathway and degraded soil food web conditions. The abundance of bacterivores and food web indices EI and SI were positively correlated with soil nutrients and pH, while the abundance of plant parasites and CI were negatively correlated with soil nutrients and pH. Paratylenchus was negatively correlated with pumpkin and melon yields and could be the potential plant parasites threatening pumpkin and melon productions. Redundancy analysis showed that monocultures of pumpkin and melon altered the soil nematode community via soil properties; total N, total P, alkeline-N, and pH were the main driving factors.


2022 ◽  
Vol 79 (1) ◽  
Author(s):  
Andressa Cristina Zamboni Machado ◽  
Maurício Rumenos Guidetti Zagatto ◽  
Francisco Skora Neto ◽  
Santino Aleandro da Silva ◽  
Luiz Antonio Zanão Júnior

2021 ◽  
Vol 45 (4) ◽  
pp. 451-461
Author(s):  
Şenol YILDIZ ◽  
Emine GÖK ◽  
Göksel ÖZER ◽  
Mustafa İMREN

2021 ◽  
pp. 108538
Author(s):  
Juan Zhou ◽  
Jianping Wu ◽  
Jingxing Huang ◽  
Xiongjie Sheng ◽  
Xiaolin Dou ◽  
...  

2021 ◽  
Author(s):  
Hongxian Song ◽  
Ziyang Liu ◽  
Jingwei Chen ◽  
Sa Xiao ◽  
Hanwen Cui ◽  
...  

Abstract Plants are expected to affect soil nematode communities. However, comparative studies on the direct and indirect ways dominant plants influence soil nematode communities are rare. In this study, we compared the effects of a dominant allelopathic plant, Ligularia virgaurea, and a dominant facilitative plant, Dasiphora fruticosa, on soil nematode richness and community composition in an alpine meadow of the Tibetan plateau. Our result indicated that 1) D. fruticosa significantly increased nematode richness whereas L. virgaurea had no significant effect; 2) D. fruticosa had no significant impact on bacterial and fungal richness, but L. virgaurea increased fungal richness; 3) D. fruticosa had strong positive direct, and weak positive indirect, effects on nematode richness, mainly mediated by a marginal decrease in fungal richness. By contrast, L. virgaurea had no significant direct effect on soil nematode richness but had strong indirect effects, mainly mediated by changes in soil pH and soil organic carbon content; 4) L. virgaurea influenced soil nematode community composition predominantly through direct effects but also indirectly through soil organic carbon. By contrast, D. fruticosa affected nematode communities through changes in understory plant communities, soil physiochemical, and microbial communities. Both facilitative and allelopathic plants thus influence soil nematode richness and community composition but seemingly in different ways. These highlight the importance of plants in determining soil community diversity and provide new insight to disentangle the complex above- and belowground linkages.


2021 ◽  
Vol 13 (23) ◽  
pp. 13145
Author(s):  
Guanlin Li ◽  
Jingquan Wang ◽  
Jiaqi Zhang ◽  
Yingnan Li ◽  
Enxi Liu ◽  
...  

Both global warming and alien plant invasion can affect the biotic communities in the soil. Most studies are focused on the soil microbial community, but little is known about how global warming, along with alien plant invasion, affects the diversity and function of the soil nematode community. In this study, the individual and interactive effects of experimental warming and Canada goldenrod (Solidago canadensis L.) invasion on soil nematode communities were measured. Experimental air warming, in combination with different levels of S. canadensis invasion, were applied. The results showed that S. canadensis invasion significantly increased chao1, maturity, and structure indexes of the nematode community by 31.44%, 25.57%, and 329.3%, respectively, and decreased the basal index by 48.70% (all p < 0.05). Only the Simpson index was affected by the interaction between warming and S. canadensis invasion. Warming enhanced the S. canadensis invasion effect on the soil nematode community. The changes in nematode community were correlated with shifts in nutrient availability and resource stoichiometry, as well as microbes in the soil. These findings demonstrated that global warming and S. canadensis invasion may, directly and indirectly, alter the soil nematode community, which may considerably affect the functioning of underground food webs.


2021 ◽  
Author(s):  
Jianqing Wang ◽  
Yingfeng Zheng ◽  
Xiuzhen Shi ◽  
Shu Kee Lam ◽  
Manuel Esteban Lucas-Borja ◽  
...  

Author(s):  
Анастасия Васильевна Егорова ◽  
Татьяна Борисовна Калинникова ◽  
Диляра Махмутриевна Хакимова ◽  
Рифгат Роальдович Шагидуллин ◽  
Anastasia Egorova ◽  
...  

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