Arbuscular mycorrhizal fungal composition in high montane forests with different disturbance histories in central Argentina

Soteras, Florencia; Grilli, Gabriel; Cofré, María Noelia; Marro, Nicolás; Becerra, Alejandra Gabriela

doi:10.1016/j.apsoil.2014.09.004

Cited by 28 publications

(20 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this work, the percentage of AMC was similar in the three microsite types; therefore, the results do not support our hypothesis that AMF community associated with planted Polylepis australis would be negatively affected by the characteristics of the high degradation microsites even when these sites had remained without vegetation cover for many years. Thus, our results agree with those of Menoyo et al () and Soteras et al () who observed that AMC in P . australis forests, where vegetation cover had not been lost, did not differ between different disturbance types such as high livestock density and reduced forest structural complexity, respectively.…”

Section: Discussionsupporting

confidence: 94%

“…A total of 33 AMF morphospecies were identified associated with P . australis , which is consistent with the 32 morpho‐species detected by Soteras et al () in P . australis forests in the Córdoba Mountains.…”

Section: Discussionsupporting

confidence: 92%

“…The AMF associated with P . australis are highly tolerant and adapted to soils with different disturbance types: high livestock stocking density (Menoyo et al ), reduced forest structural complexity (Soteras et al ), or fires (Soteras et al ). However, no evaluation of the AMF associated with P .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bare soil cover and arbuscular mycorrhizal community in the first montane forest restoration in Central Argentina

Becerra

Divan

Renison

2019

Restoration Ecology

View full text Add to dashboard Cite

Soil erosion affects extensive areas worldwide and must be urgently reduced promoting plant cover and beneficial microorganisms associated with plants, including arbuscular mycorrhizal fungi (AMF). In mountain environments, plant cover is difficult to enhance due to harsh conditions during the dry season and steep slopes. Our objective was to evaluate the percentage of the soil surface covered by plants and the AMF community associated with trees 12.5 years after planting during forest restoration efforts in microsites at different levels of soil degradation. The study was performed in the first montane forest restoration initiative of Central Argentina, where one of the trials consisted of planting Polylepis australis saplings at microsites with different levels of soil degradation: high, intermediate, and low. After 12.5 years, percentage of bare soil cover was significantly reduced by 36 and 37% in the high and intermediate degradation microsites, respectively. Low degradation microsites were initially very low in bare soil and did not significantly change. Mycorrhizal colonization, hyphae, vesicles, arbuscules, AMF diversity, and community structure were similar among microsite types. Percentage of hyphal entry points was higher at microsites with low degradation, number of spores was higher in high and intermediate degradation, and species richness was higher in high degradation. Acaulospora and Glomus were the most abundant genera in all microsites. We conclude that even in the most degraded microsites around 2.8% of the bare soil is covered by vegetation each year and that the arbuscular mycorrhizal community is highly tolerant and adapted to soils with different disturbance types. Implications for Practice• Bare soil cover was reduced by excluding livestock and planting native trees even in the most degraded microsites (outside of erosion gullies). • The arbuscular mycorrhizal fungi community was resilient to degradation and all its species were present even in the most degraded microsites.

show abstract

Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 92%

See 1 more Smart Citation

Bare soil cover and arbuscular mycorrhizal community in the first montane forest restoration in Central Argentina

Becerra

Divan

Renison

2019

Restoration Ecology

View full text Add to dashboard Cite

show abstract

“…AMF spores are sensitive to certain disturbances or soil use and management systems (e.g. fire, habitat fragmentation, forest structural changes or agricultural practices) (Colombo et al ., ; Säle et al ., ; Soteras et al ., ; Longo et al ., ). Therefore, they could be useful as indicators for agricultural soil use and management.…”

Section: Introductionmentioning

confidence: 99%

Effects of cropping systems under no‐till agriculture on arbuscular mycorrhizal fungi in Argentinean Pampas

Cofré

Ferrari

Becerra

et al. 2017

Soil Use and Management

View full text Add to dashboard Cite

Here, we compare arbuscular mycorrhizal fungi (AMF) communities and fatty acids in soils under different no-till (NT) agricultural managements over two seasons in two consecutive years. Two NT practices with different agricultural managements were compared: crop rotation (CR) and soya bean monoculture (MC). Soils of natural grasslands (NGs) were used as a reference. Treatments were tested along a regional gradient (four geographical locations) across a 400-km transect of the Argentinean Pampas. We identified 46 morphospecies. Several morphospecies occurred abundantly at all soils; others appeared to be restricted to specific situations. At the regional scale, CR maintained the same richness levels of AMF spores, whereas MC showed less richness, when compared with the NG. Although AMF spore density was clearly affected by cropping practices in the four locations, we could observe some changes in AMF species richness, and similar diversity under agricultural and natural soils. Fatty acid concentrations (whole-cell, phospholipid and neutral lipid fatty acids) revealed differences between soil managements and showed similar patterns of variation in all locations. Spore density positively correlated with all soil lipids fractions. The results suggest that AMF spore communities and fatty acids in soils are suitable indicators of soil management involving different levels of crop rotation. Spore richness measured at a regional scale proved to be sensitive to different NT agricultural managements. Moreover, certain morphospecies could be good bioindicators for NT practices based on cropping systems on the Argentinean Pampas.

show abstract

“…Soil microorganisms play vital roles in the maintenance of riparian vegetation and ecosystem functioning (Johnson et al 2013;Soteras et al 2014). Of known soil microorganisms, arbuscular mycorrhizal fungi (AMF) in the phylum Glomeromycota are obligate symbiotic soil organisms, forming mutualistic associations with a broad range of hosts including wild plants (Wang and Qiu 2006;Smith and Smith 2011;Stu¨rmer 2012).…”

Section: Introductionmentioning

confidence: 99%

Biodiversity of arbuscular mycorrhizal fungi in the drawdown zone of the Three Gorges Reservoir under different fertilization histories

Luo

Cui

et al. 2016

Ecological Research

View full text Add to dashboard Cite

Impoundment of the Three Gorges Reservoir (TGR) has dramatically influenced the riparian environment and shaped a new drawdown zone, which has experienced long‐term winter conditions and short periods of summer flooding. The community structure and diversity of arbuscular mycorrhizal (AM) fungi (AMF) were investigated in three areas with different fertilization histories [Area A (5 years of fertilization), Area B (3 years of fertilization) and Area C (no fertilization)] in the drawdown zone of the TGR. Altogether, 50 AMF species were identified; the genera Acaulospora, Funneliformis and Glomus were predominant. The AM fungal community differed among areas A, B and C. A higher isolation frequency and relative abundance of Acaulospora, Ambispora, Entrophospora and Paraglomus were observed in areas A and B; however, Claroideoglomus, Diversispora, Sclerocystis and Septoglomus were more abundant in Area C. The highest spore density occurred in Area C, and was slightly lower in Area A and lowest in Area B. Conversely, species richness and diversity indices (Shannon–Wiener and evenness indices) were the highest in Area A, followed by areas C and B. Based on nonmetric multidimensional scaling analyses, the distribution of AMF was influenced by plant host, fertilization practice and environmental factors. Among them, the soil physicochemical properties were the main drivers affecting AMF, in which three edaphic attributes (carbon/nitrogen ratio, available phosphorus and potassium content) were significantly correlated (P < 0.001) with the AM fungal community composition in the three areas of the drawdown zone of the TGR.

show abstract

Arbuscular mycorrhizal fungal composition in high montane forests with different disturbance histories in central Argentina

Cited by 28 publications

References 59 publications

Bare soil cover and arbuscular mycorrhizal community in the first montane forest restoration in Central Argentina

Bare soil cover and arbuscular mycorrhizal community in the first montane forest restoration in Central Argentina

Effects of cropping systems under no‐till agriculture on arbuscular mycorrhizal fungi in Argentinean Pampas

Biodiversity of arbuscular mycorrhizal fungi in the drawdown zone of the Three Gorges Reservoir under different fertilization histories

Contact Info

Product

Resources

About