Influence of Degradation of PLA with High Degree of Crystallinity on Fungal Community Structure in Compost

Author(s):  
Mehlika Karamanlioglu ◽  
Ümit Alkan
1979 ◽  
Vol 57 (15) ◽  
pp. 1630-1641 ◽  
Author(s):  
J. Bissett ◽  
D. Parkinson

The community structure and interactions among the soil microfungi of three alpine sites were investigated using a factor analytical method. The sites were distributed along an elevation gradient, and the diversity and evenness of allotment of species were inversely related to altitude. Clusters of species having similar distributions were defined from factor analyses performed separately for each site. Within each site, differences among the soil horizons were primarily responsible for variation in the fungal community, and species groups were differentiated by their patterns of colonization of the soil profile. Changes in the mycoflora with depth were continuous, although the magnitude of these changes was greater near the surface of the soil. Seasonal changes also were most apparent in the surface horizons.In a grassland site at 1900 m, a species group dominated by Penicillium janthinellum was largely restricted to the surface horizons of the soil, and three other species groups were affected by seasonal changes in the environment. In an alpine meadow site (2530 m), the Penicillium steckii and Cylindrocarpon destructans groups occurred in the surface horizons, with the first group predominant in the spring and the second in the summer and fall. At a summit ridge site (2840 m), all taxa except the sterile fungi were essentially restricted to the surface horizons. Species groups dominated by sterile-dark fungi were predominant in the bottom horizons at all three sites.The most frequently occurring species usually had large communalities indicating a high degree of association with the other species, and probably reflecting their influence over the suitability of the environment for exploitation by other species. The communality structure also indicated a decrease in species interactions with increasing depth of soil.


2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Martin Jemo ◽  
Driss Dhiba ◽  
Abeer Hashem ◽  
Elsayed Fathi Abd_Allah ◽  
Abdulaziz A. Alqarawi ◽  
...  

2018 ◽  
Vol 221 (1) ◽  
pp. 493-502 ◽  
Author(s):  
Adair Patterson ◽  
Lluvia Flores-Rentería ◽  
Amy Whipple ◽  
Thomas Whitham ◽  
Catherine Gehring

Agriculture ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1113
Author(s):  
Xiaolong Lin ◽  
Zongmu Yao ◽  
Xinguang Wang ◽  
Shangqi Xu ◽  
Chunjie Tian ◽  
...  

Rice is a staple food for the world’s population. However, the straw produced by rice cultivation is not used sufficiently. Returning rice straw to the field is an effective way to help reduce labor and protect the soil. This study focused on the effect of water-covered depth with the freeze–thaw cycle on rice straw decomposition and the soil fungal community structure in a field in Northeast China. The field and controlled experiments were designed, and the fungal ITS1 region was tested by high-throughput sequencing for analyzing the fungal communities in this study. The results showed that water coverage with the freeze–thaw cycle promoted the decomposition of rice straw and influenced the fungal community structure; by analyzing the network of the fungal communities, it was found that the potential keystone taxa were Penicillium, Talaromyces, Fusarium, and Aspergillus in straw decomposition; and the strains with high beta-glucosidase, carboxymethyl cellulase, laccase, lignin peroxidase, and manganese peroxidase could also be isolated in the treated experiment. Furthermore, plant pathogenic fungi were found to decrease in the water-covered treatment. We hope that our results can help in rice production and straw return in practice.


2020 ◽  
Author(s):  
Chunhui Ma ◽  
Jiangjiao Qi ◽  
Xue Yu ◽  
Lihe Su ◽  
Tingting He ◽  
...  

Abstract Alfalfa (Medicago sativa L.) is an important forage legume in farming and animal husbandry systems. In this study, MiSeq high-throughput sequencing was applied to assess the relationship between bacterial and fungal community structures and alfalfa growth characteristics and soil physical and chemical properties induced by different cultivars alfalfa (Victoria, Kangsai, Aohan) in the grey desert soil. The results showed that the diversity of bacterial and fungal in Victoria was higher, and the bacterial diversity was significantly lower for alfalfa with Aohan than for the others, and the fungal diversity was lower for alfalfa with Kangsai than for the others. Heatmap showed that total nitrogen, fresh weight, pH and organic have significantly affect fungal community structure, whereas pH and organic carbon also significant effects on bacterial community structure. LefSe analysis showed that the growth adaptability of introduced alfalfa is mainly related to fungal and bacterial species, and the beneficial microorganisms with significant differences and relative high abundance are significantly enriched in Victoria. Pathogens with high relative abundance are mainly concentrated in Aohan alfalfa soil. Based on our findings, Victoria is the high-yield alfalfa suitable for planting in gray desert soil, while planting Kangsai and Aohan alfalfa needs probiotic for adjuvant.


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