scholarly journals The effect of environmental contamination on the community structure and fructification of ectomycorrhizal fungi

2016 ◽  
Vol 6 (1) ◽  
pp. e00396 ◽  
Author(s):  
Qibiao Sun ◽  
Yaping Liu ◽  
Huatao Yuan ◽  
Bin Lian
Keyword(s):  
Community Structure ◽  
Ectomycorrhizal Fungi ◽  
Environmental Contamination

Diversity and community structure of ectomycorrhizal fungi in a wooded meadow

2006 ◽  
Vol 110 (6) ◽  
pp. 734-748 ◽  
Author(s):  
Leho Tedersoo ◽  
Triin Suvi ◽  
Ellen Larsson ◽  
Urmas Kõljalg
Keyword(s):  
Community Structure ◽  
Ectomycorrhizal Fungi

scholarly journals Inoculation With Ectomycorrhizal Fungi and Dark Septate Endophytes Contributes to the Resistance of Pinus spp. to Pine Wilt Disease

2021 ◽  
Vol 12 ◽  
Author(s):  
Honglong Chu ◽  
Haihua Wang ◽  
Yanan Zhang ◽  
Zhumei Li ◽  
Chunyan Wang ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Ectomycorrhizal Fungi ◽  
Microbial Community Structure ◽  
Pine Wilt Disease ◽  
Wilt Disease ◽  
Dark Septate Endophytes ◽  
Pine Wilt ◽  
Microbial Carbon ◽  
Pinus Spp

Pine wilt disease (PWD) is a deadly disease to pines (Pinus spp.) worldwide. The occurrence of PWD can reduce the relative abundance of root ectomycorrhizal fungi (ECMF) and dark septate endophytes (DSE). However, the effects of exogenous ECMF/DSE inoculation on the rhizosphere microbial community structure of Pinus tabulaeformis infected by pine wood nematode (PWN) is little known. Here, we tested how ECMF/DSE may improve resistance to PWD by quantifying microbial carbon biomass and soil enzymatic activity among different treatments at 6 and 9 months after PWN infection. Denaturing gradient gel electrophoresis (DGGE) was used to study the microbial community structure at 3, 6, and 9 months after PWN infection in the rhizosphere of P. tabulaeformis seedlings inoculated with ECMF/DSE. The results showed that exogenous ECMF/DSE inoculation reduced the disease severity caused by PWN infection. After PWN infection, the rhizosphere microbial carbon of seedlings inoculated with Amanita vaginata, Suillus bovinus, Gaeumannomyces cylindrosporus, and Paraphoma chrysanthemicola was 38.16, 49.67, 42.11, and 96.05% higher than that of the control group, respectively. Inoculation of ECMF/DSE inhibited the decrease of rhizosphere microbial biomass caused by PWN infection. The richness and diversity of P. tabulaeformis rhizosphere fungi at 9 months were reduced by PWN infection but partially recovered by the exogenous fungi (ECMF/DSE) inoculation except for P. chrysanthemicola, which indicates a role of ECMF/DSE in maintaining stability of the microbial community. Inoculation with ECMF/DSE increased the beneficial bacterial (Thauera sp., Mesorhizobium sp., etc.) and fungal groups (Tomentella ellisii, Wilcoxina mikolae, etc.) of in the rhizosphere. In summary, exogenous ECMF/DSE inoculation could increase P. tabulaeformis resistance to PWD probably by improving the rhizosphere microenvironment.

Profiling the community structure of ectomycorrhizal fungi at endemic pine (Pinus greggii) stands of northeastern Mexico

2020 ◽  
Vol 82 (3) ◽  
pp. 292-302
Author(s):  
Rebeca Casique Valdés ◽  
Fernando Galindo García ◽  
Leho Tedersoo ◽  
Sten Anslan ◽  
Eladio H Cornejo Oviedo ◽  
...  
Keyword(s):  
Community Structure ◽  
Ectomycorrhizal Fungi ◽  
Northeastern Mexico ◽  
Pinus Greggii

scholarly journals Promoting the Growth of Pinus sylvestris var. mongolica Seedlings and Improving Rhizosphere Fungal Community Structure through Interaction between Trichoderma and Ectomycorrhizal Fungi

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Saiyaremu Halifu ◽  
Xun Deng ◽  
Jun Zhang ◽  
Jiangbao Xia ◽  
Xiaoshuang Song ◽  
...  
Keyword(s):  
Organic Matter ◽  
Community Structure ◽  
Pinus Sylvestris ◽  
Total Phosphorus ◽  
Ectomycorrhizal Fungi ◽  
Fungal Community ◽  
Trichoderma Harzianum ◽  
Rhizosphere Soil ◽  
Suillus Luteus ◽  
Fungal Community Structure

In this study, pot experiments were conducted on the seedlings of Pinus sylvestris var. mongolica to study the influence of Trichoderma (Trichoderma harzianum E15) and Ectomycorrhizal fungi (Suillus luteus N94) on the growth of these seedlings. In particular, the effects of these fungi on the fungal community structure in the rhizosphere soil of the seedlings were investigated. Inoculation with Trichoderma harzianum E15 and Suillus luteus N94 significantly (P < 0.05) promoted the growth of the Pinus sylvestris seedlings. The non-metric multidimensional scaling (NMDS) results indicated a significant difference (P < 0.05) between the fungal community structures in the rhizosphere soil of the annual and biennial seedlings. In the rhizosphere soil of annual seedlings, the main fungi were Ascomycota, Basidiomycota, Zygomycota. Ascomycota, Basidiomycota, Mortierellomycota, and p-unclassified-k-Fungi were the main fungi in the rhizosphere soil of biennial seedlings. The dominant genus in the rhizosphere soil and a key factor promoting the growth of the annual and the biennial seedlings was Trichoderma, Suillus, respectively. Both of them were negatively correlated with the relative abundance of microbial flora in the symbiotic environment. Trichoderma had a significant promoting effect on the conversion of total phosphorus, total nitrogen, ammonium nitrogen, nitrate nitrogen, and the organic matter in the rhizosphere soil of the seedlings, while Suillus significantly promoted the conversion of organic matter and total phosphorus.

Towards global patterns in the diversity and community structure of ectomycorrhizal fungi

2012 ◽  
Vol 21 (17) ◽  
pp. 4160-4170 ◽  
Author(s):  
LEHO TEDERSOO ◽  
MOHAMMAD BAHRAM ◽  
MÄRT TOOTS ◽  
ABDALA G. DIÉDHIOU ◽  
TERRY W. HENKEL ◽  
...  
Keyword(s):  
Community Structure ◽  
Ectomycorrhizal Fungi ◽  
Global Patterns

Impacts of Information Subsidies and Community Structure on Local Press Coverage of Environmental Contamination

1995 ◽  
Vol 72 (2) ◽  
pp. 271-284 ◽  
Author(s):  
Robert J. Griffin ◽  
Sharon Dunwoody
Keyword(s):  
Community Structure ◽  
Health Risks ◽  
Environmental Contamination ◽  
Press Coverage ◽  
Local Staff ◽  
Daily Newspapers ◽  
Environmental Group ◽  
Toxic Releases ◽  
The Press ◽  
Information Subsidies

An analysis of 373 daily newspapers in the Midwest found that community structure and an information subsidy from an environmental group affected press coverage of a story about pollution from industrial toxins. A press kit the group sent to some newspapers appears to have influenced the papers to run a story on industrial toxic releases, but it primarily prompted editors to delegate local staff to cover the story. Results indicate that the press' function to report or raise issues concerning industrial toxic releases and related health risks is tempered by community structure and particularly by community reliance on manufacturing.

Effects of ammonium sulphate on the community structure and biomass of ectomycorrhizal fungi in a Norway spruce stand in southwestern Sweden

1997 ◽  
Vol 75 (10) ◽  
pp. 1628-1642 ◽  
Author(s):  
Ola Kårén ◽  
Jan-Erik Nylund
Keyword(s):  
Polymerase Chain Reaction ◽  
Community Structure ◽  
Norway Spruce ◽  
Ammonium Sulphate ◽  
Ectomycorrhizal Fungi ◽  
Organic Layer ◽  
Chain Reaction ◽  
Sulphur Deposition ◽  
Restriction Profiles ◽  
Polymerase Chain

Effects of nitrogen and sulphur deposition on the community structure and biomass of ectomycorrhizal fungi in a Norway spruce (Picea abies (L.) Karst.) forest were examined following fertilization with ammonium sulphate. The treated plots had been fertilized three times a year from 1988 with (NH4)2SO3 (100 kg N and 114 kg S ∙ ha−1 ∙ year−1). Sampling was carried out in the organic layer of the fertilized and control plots in late autumn in 1992 and 1993. The fungal biomass was estimated in 1992 using ergosterol analysis. The nitrogen treatment reduced the fine-root biomass (to 49% of the control) but did not decrease the mycorrhizal frequency (close to 100%) or concentration of ergosterol in fine roots. To identify mycorrhizas fungal ribosomal DNA was amplified using the polymerase chain reaction and digested with endonucleases. Of the 58 samples analysed, 21 different restriction profiles could be distinguished. Only four of the restriction profiles matched the restriction patterns of the dominant sporocarps on the site. It is suggested that nitrogen deposition will primarily change the community structure of ectomycorrhizal fungi, whereas the number of species may be less affected than has been previously inferred from sporocarp inventories. Key words: air pollution, biomass, diversity, ectomycorrhiza, identification, polymerase chain reaction.

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