scholarly journals How do monocultures of fourteen forest tree species affect arbuscular mycorrhizal fungi abundance and species richness and composition in soil?

2020 ◽  
Vol 465 ◽  
pp. 118091 ◽  
Author(s):  
Katarzyna Rożek ◽  
Kaja Rola ◽  
Janusz Błaszkowski ◽  
Tomasz Leski ◽  
Szymon Zubek
Keyword(s):  
Species Richness ◽  
Arbuscular Mycorrhizal Fungi ◽  
Tree Species ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Forest Tree ◽  
Forest Tree Species

scholarly journals Invasion of a xeric forest by an exotic tree species in Argentina: Impacts on the diversity of arbuscular mycorrhizal fungi and pre-existing mutualistic relationships

2021 ◽  
Vol 35 (2) ◽  
pp. 269-275
Author(s):  
Camila Abarca ◽  
Marcelo Daniel Barrera ◽  
Marta Cabello ◽  
Fabricio Valdés ◽  
María Silvana Velázquez
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Tree Species ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Exotic Tree

scholarly journals Occurrence of arbuscular mycorrhizal fungi in soils of early stages of a secondary succession of Atlantic Forest in South Brazil

2006 ◽  
Vol 20 (3) ◽  
pp. 513-521 ◽  
Author(s):  
Sidney Luiz Stürmer ◽  
Osmar Klauberg Filho ◽  
Maike Hering de Queiroz ◽  
Margarida Matos de Mendonça
Keyword(s):  
Species Richness ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Secondary Succession ◽  
Arbuscular Mycorrhizal ◽  
Plant Species Richness ◽  
Atlantic Rain Forest ◽  
Inoculum Potential ◽  
Mycorrhizal Inoculum Potential ◽  
Successional Stages

Arbuscular mycorrhizal fungi (AMF) species diversity and mycorrhizal inoculum potential were assessed in areas representative of stages of secondary succession in the Brazilian Atlantic Rain Forest. Within each stage - pioneer, 'capoeirinha' and 'capoeirão'- four transects were established and three soil samples were taken along each transect. The plant community was dominated by Pteridium aquilinium in the pioneer stage, while Dodonaea viscosa and P. aquilinium were co-dominants in the 'capoeirinha' stage. In capoeirão, Miconia cinnamomifolia was dominant followed by Euterpe edulis. Total spore number per 100 g soil was significantly larger in the 'capoeirinha' stage than in the other stages, although the number of viable spores was similar among stages. Acaulosporaceae and Glomeraceae were the predominant families accounting for 83% of the total spores recovered. Of the 18 spore morphotypes, 10 were allocated to known species, with Acaulospora sp. and Glomus sp. being the dominants recovered in all samples. Simpson's index of diversity and evenness for AMF species were not significantly different among the successional stages and AMF species richness was negatively correlated with plant species richness. Soil from 'Capoeirinha" showed the highest inoculum potential (37%). Dominance of the mycorrhizal community by few sporulators and the relationship between plant and fungal diversity are discussed.

scholarly journals Aspects of arbuscular mycorrhizal fungi in an atlantic forest chronosequence parque estadual turístico do Alto Ribeira (petar), SP

2004 ◽  
Vol 4 (2) ◽  
pp. 1-15 ◽  
Author(s):  
Marcos P.M. Aidar ◽  
Rosilaine Carrenho ◽  
Carlos A. Joly
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Atlantic Forest ◽  
Tree Species ◽  
Mycorrhizal Fungi ◽  
Late Phase ◽  
Arbuscular Mycorrhizal ◽  
Diversity Indices ◽  
Mycorrhizal Colonization ◽  
Wet Season ◽  
Generic Level

Mycorrhizal colonization was assessed in roots of trees within an Atlantic Forest chronosequence, located in the southeastern of São Paulo State, Brazil, inside Tourist State Park of the High Ribeira Valley (PETAR). The phytosociological survey was carried out in three adjacent areas, all on calcareous soil, which correspond to different time intervals during which they have been left abandoned following a slash-and-burn agricultural perturbation. Early Phase (EP) with 15 years; Mid Phase (MP) with 25 years; and Late Phase (LP) with more than 36 years without clear-cut. The inventory indicated a continuum of tree species substitution, which is dominated by species of Leguminosae, especially Piptadenia gonoacantha (Mart.) J.F. Macbr. (Mimosoideae) in the earlier successional phases. Mycorrhizal colonization, estimated by the occurrence of the mycorrhizal structures in the tree species roots, diminished during the season with less rain (winter), and showed no significant differences between successional phases in the wet season (summer). Rather, the mycorrhizal colonization was correlated with occurrence of the tree’s successional status: being positively correlated with occurrence of pioneer species, and negatively correlated with late secondary species. Mycorrhizal colonization was also correlated negatively with soil organic matter and base saturation. Twenty five species of arbuscular mycorrhizal fungi belonging to four genera were identified. Six species were only identified to generic level. The species Glomus etunicatum Becker & Gerd. represented 10% of the total number of spores and occurred in all phases and seasons, while the genus Glomus represented 57% of the total of spores found in the rhizosphere. The diversity indices evaluated for the mycohrriza community were: H’ = 2.3, J’ = 0.97 and R = 4.12. These results are a contribution to the knowledge of The Atlantic Forest biodiversity and may have implications to support programs regarding rehabilitation of degraded vegetation in one of the World’s most threatened Biomes.

scholarly journals Occurrence of arbuscular mycorrhizal fungi in different cropping systems at Cochabamba, Bolivia (Research Note)

1999 ◽  
Vol 8 (3) ◽  
pp. 309-318 ◽  
Author(s):  
M. VESTBERG ◽  
M. CARDOSO ◽  
A. MÅRTENSSON
Keyword(s):  
Species Richness ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Cropping Systems ◽  
Cropping System ◽  
Arbuscular Mycorrhizal ◽  
Wiener Index ◽  
Southern Latitude ◽  
Arbuscular Mycorrhiza Fungi ◽  
Native Pasture

The occurrence of arbuscule-forming fungi in different cropping systems was investigated at Cochabamba in the province of Cercado, Bolivia. The cropping systems included grain and mixed pasture systems, with or without fertilization and agrochemicals. Geographically, the soils studied were situated at 17°23'9'' southern latitude and 66°9'35'' western longitude and a mean height of 2600 m above sea level. Spores of four arbuscular mycorrhiza fungi-forming genera were observed; Glomus Tul. & Tul., Entrophospora Ames & Schneider, Sclerocystis Berk. & Broome emend. Almeida & Schenck and Scutellospora Walker & Sanders. Glomus was the dominating genus, followed by Sclerocystis; Scutellospora and Entrophospora were observed occasionally. A cropping system consisting of a native pasture without any fertilization or other plant or soil treatments had the highest numbers of spores and the highest species richness, i.e. eight out of nine species identified. The mycorrhizal diversity measured with the Shannon-Wiener index did however not differ very much between cropping systems. ;

scholarly journals Arbuscular mycorrhizal fungi associated with shade trees and Coffea arabica L. in a coffee-based agroforestry system in Bonga, Southwestern Ethiopia

Afrika Focus ◽  
2013 ◽  
Vol 26 (2) ◽  
pp. 111-131
Author(s):  
Tadesse Chanie Sewnet ◽  
Fassil Assefa Tuju
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Tree Species ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Shade Trees ◽  
Coffee Production ◽  
Shade Tree ◽  
Significant Difference ◽  
Cordia Africana

In a first step to understand the interactions between Colfea arabica L. trees and mycorrhizae in Ethiopia, an investigation of the current mycorrhizal colonization status of roots was undertaken. We sampled 14 shade tree species occurring in coffee populations in Bonga forest, Ethiopia. Milletia ferruginea, Schefflera abyssinica, Croton macrostachyus, Ficus vasta, F. sur, Albizia gummifera, Olea capensis, Cordia africana, Ehretia abyssinica, Pouteria adolfi-friederici, Pavetta oliveriana, Prunus africana, Phoenix reclinata and Polyscias fulva. Coffee trees sampled under each shade tree were all shown to be colonized by arbuscular mycorrhizal fungi (AM fungi). Four genera and 9 different species of AM fungi were found in the soils. Glomus (Sp1, Sp2, & Sp3 & Sp4), Scutellospora (Sp1 & Sp2) and Gigaspora (Sp1 & Sp2) were found under all 14 shade tree species, whereas Acaulospora (Sp1) occurred only in slightly acidic soils, within a pH range of 4.93-5.75. Generally, roots of the coffee trees were colonized by arbuscules to a greater degree than those of their shade trees, the arbuscular colonization percentage (AC%) of the former being higher than the latter (significant difference at 0.05 level). Though differences were not statistically significant, the overall hyphal colonization percentage (HC%) and mycorrhizal hyphal colonization percentage (MHC%) were shown to be slightly higher under coffee trees than under their shade trees. However, the differences were statistically significant at 0.05 level in the case of HC% values of coffee trees under Pouteria adolf-friederici and MHC% under Cordia africana. Spore density and all types of proportional root colonization parameters (HC%, MHC%, AC% and vesicular colonization percentage, VC%) for both coffee and shade trees were negatively and significantly correlated with organic soil carbon, total N, available P, EC and Zn. Correlation between arbuscular colonization for coffee (AC%) and organic carbon was not significantly positive at a 0.05 level. Incidence of specific spore morphotypes was also correlated with physical and chemical soil properties. Results indicate that AM fungi could potentially be important in aforestation and help to promote coffee production activities in Ethiopia providing an alternative to expensive chemical fertilizer use, and would offer management methods that take advantage of natural systems dynamics that could potentially preserve and enhance coffee production.

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