Changing soil characteristics alter the arbuscular mycorrhizal fungi communities of Arabica coffee (Coffea arabica) in Ethiopia across a management intensity gradient

Beenhouwer, Matthias De; Geel, Maarten Van; Ceulemans, Tobias; Muleta, Diriba; Lievens, Bart; Honnay, Olivier

doi:10.1016/j.soilbio.2015.08.037

Cited by 87 publications

(53 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In Africa, AMF research has focused mainly on agro-ecosystems and pastoral farmland (Uhlmann et al, 2004(Uhlmann et al, , 2006Lekberg et al, 2007;Tchabi et al, 2008;De Beenhouwer et al, 2015a,b), whereas studies on natural ecosystems have addressed specific host plants from arid and semiarid regions (Jacobson et al, 1993;Yamato et al, 2009), afromontane forests (Wubet et al, 2003(Wubet et al, , 2006a, savannas (Tchabi et al, 2008), natural grasslands, shrublands and rainforests ( € Opik et al, 2013;Davison et al, 2015;Gazol et al, 2016). Many of these studies have revealed high ratios of novel taxa in natural tropical ecosystems, particularly in Africa (Wubet et al, 2003(Wubet et al, , 2006b€ Opik et al, 2013;De Beenhouwer et al, 2015b).…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi communities from tropical Africa reveal strong ecological structure

et al. 2016

View full text Add to dashboard Cite

SummaryUnderstanding the distribution and diversity of arbuscular mycorrhizal fungi (AMF) and the rules that govern AMF assemblages has been hampered by a lack of data from natural ecosystems. In addition, the current knowledge on AMF diversity is biased towards temperate ecosystems, whereas little is known about other habitats such as dry tropical ecosystems.We explored the diversity and structure of AMF communities in grasslands, savannas, dry forests and miombo in a protected area under dry tropical climate (Gorongosa National Park, Mozambique) using 454 pyrosequencing.In total, 147 AMF virtual taxa (VT) were detected, including 22 VT new to science. We found a high turnover of AMF with ˂ 12% of VT present in all vegetation types. Forested areas supported more diverse AMF communities than savannas and grassland. Miombo woodlands had the highest AMF richness, number of novel VT, and number of exclusive and indicator taxa.Our data reveal a sharp differentiation of AMF communities between forested areas and periodically flooded savannas and grasslands. This marked ecological structure of AMF communities provides the first comprehensive landscape-scale evidence that, at the background of globally low endemism of AMF, local communities are shaped by regional processes including environmental filtering by edaphic properties and natural disturbance.

show abstract

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi communities from tropical Africa reveal strong ecological structure

et al. 2016

View full text Add to dashboard Cite

show abstract

“…For instance, diversity of ectomycorrhizal fungi from forest ecosystems has been shown to be adversely affected by nitrogen pollution (Cox, Barsoum, Lilleskov, & Bidartondo, ; Lilleskov, Kuyper, Bidartondo, & Hobbie, ; van der Linde et al, ). Likewise, the diversity and abundance of arbuscular mycorrhizal fungi from grassland and, particularly, agricultural ecosystems have been shown to be negatively affected by nutrient enrichment (De Beenhouwer et al, ; Jiang et al, ; Leff et al, ; Van Geel et al, ). Changes in arbuscular mycorrhizal fungal communities can be expected to alter host plant fitness and ecosystem functioning, shifting mycorrhizal symbiosis phenotypes from mainly mutualistic forms in nutrient‐poor ecosystems to commensalism and parasitism in increasingly nutrient‐rich ecosystems (Johnson, Wilson, Wilson, Miller, & Bowker, ; Wei et al, ).…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungi in European grasslands under nutrient pollution

Ceulemans

Geel

Jacquemyn

et al. 2019

Global Ecol Biogeogr

Self Cite

View full text Add to dashboard Cite

Aim Our aim was to quantify the extent to which nutrient pollution explains arbuscular mycorrhizal fungal community richness and composition. Location Europe. Time period 2014–2016. Major taxa studied Arbuscular mycorrhizal fungi. Methods We sampled soils of calcareous and acidic grasslands and roots of 34 host plant species across a large geographical gradient of atmospheric nitrogen deposition and soil phosphorus availability. Furthermore, we performed an independent pairwise comparison between fertilized and unfertilized grasslands in Belgium and Iceland to compare results. Results We found that nitrogen deposition had a significant negative relationship to arbuscular mycorrhizal fungal richness, with a negative community threshold of 7.7 kg N/ha/year corresponding to the greatest reduction in operational taxonomic units. Additionally, we found that soil phosphorus had a significant negative relationship to mycorrhizal fungal richness. Main conclusions Our results highlight the necessity to revisit the critical loads of atmospheric nitrogen deposition used in European environmental policy, currently set at 10–15 kg N/ha/year. Importantly, our observed threshold of 7.7 kg N/ha/year does not correspond to a critical load below which there is no environmental harm, because the least negative changes in arbuscular mycorrhizal fungal communities were observed at < 5 kg N/ha/year. Therefore, to avoid compromising the policy tenet of no environmental harm with respect to grassland mycorrhizal fungi, areas of zero tolerance to nitrogen pollution should be delimited. Our results also indicate that environmental policy biased towards reducing nitrogen pollution alone will fail to preserve mycorrhizal biodiversity in European grasslands. We advocate increased policy attention to avoid phosphorus enrichment, particularly through agricultural fertilization. Here too, areas of zero phosphorus input, ideally set in the currently unpolluted (or least polluted) areas, seem key for effective environmental policy, because elevated levels of soil phosphorus after phosphorus fertilization are known to be extremely persistent.

show abstract

“…First, the 'abiotic filtering' hypothesis states that local habitat conditions act as a main filter, selecting only the AMF taxa that are adapted to the abiotic conditions in that habitat. Strong supporting evidence for abiotic filtering comes both from studies comparing the AMF communities between distinct habitats (Moora et al, 2014;Rodriguez-Echeverria et al, 2017) and from studies that have evaluated the response of AMF communities to anthropogenic land use changes and natural succession (De Beenhouwer et al, 2015;Valyi et al, 2015). For instance, a study investigating AMF communities in the Gorongosa National Park in Mozambique revealed a strong differentiation of AMF communities between forested areas, flooded savannas and grasslands (Rodriguez-Echeverria et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Abiotic rather than biotic filtering shapes the arbuscular mycorrhizal fungal communities of European seminatural grasslands

et al. 2017

Self Cite

View full text Add to dashboard Cite

Although it is well known that arbuscular mycorrhizal fungi (AMF) play a key role in the functioning of natural ecosystems, the underlying drivers determining the composition of AMF communities remain unclear. In this study, we established 138 sampling plots at 46 grassland sites, consisting of 26 acidic grasslands and 20 calcareous grasslands spread across eight European countries, to assess the relative importance of abiotic and biotic filtering in driving AMF community composition and structure in both the grassland soils and in the roots of 13 grassland plant species. Soil AMF communities differed significantly between acidic and calcareous grasslands. In root AMF communities, most variance was attributable to soil variables while very little variation was explained by host plant identity. Root AMF communities in host plant species occurring in only one grassland type closely resembled the soil AMF communities of that grassland type and the root AMF communities of other host plant species occurring in the same grassland type. The observed AMF-host plants networks were not modular but nested. Our results indicate that abiotic conditions, rather than biotic filtering through host plant specificity, are the most important drivers in shaping AMF communities in European seminatural grasslands.

show abstract

Changing soil characteristics alter the arbuscular mycorrhizal fungi communities of Arabica coffee (Coffea arabica) in Ethiopia across a management intensity gradient

Cited by 87 publications

References 52 publications

Arbuscular mycorrhizal fungi communities from tropical Africa reveal strong ecological structure

Arbuscular mycorrhizal fungi communities from tropical Africa reveal strong ecological structure

Arbuscular mycorrhizal fungi in European grasslands under nutrient pollution

Abiotic rather than biotic filtering shapes the arbuscular mycorrhizal fungal communities of European seminatural grasslands

Contact Info

Product

Resources

About