Land-use intensity and soil properties shape the composition of fungal communities in Mediterranean peaty soils drained for agricultural purposes

Bonari, E.; Pellegrino, Elisa

doi:10.1007/s00374-015-1013-4

Cited by 31 publications

(23 citation statements)

References 86 publications

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“…Among the abiotic factors that can have relevant roles in driving AMF communities are soil moisture (75), rainfall patterns, and geographical distance (40,76). There is no doubt that soil type has a role in the AMF distribution (10,34,35,40,(77)(78)(79)(80), and our work also demonstrated that soil type is a major factor driving AMF assemblages, after elimination of the host factor and other environmental variables not related to soil characteristics. Although individual soil characteristics have been reported to play important roles in AMF community structure and composition (7,11,13,40,42,78,(81)(82)(83), very limited data sets regarding soil characteristics were used in these studies, and the relative incidences of each soil property determined after complete soil characterization have not been reported previously.…”

Section: Discussionsupporting

confidence: 55%

Section: Importancementioning

confidence: 99%

“…PCRbased methods have been used to detect AMF in plant roots and in soil in numerous studies in natural and seminatural ecosystems, including grasslands (26), wetlands (27), agricultural ecosystems (12), urban soils (28), semiarid shrubland (29, 30), and a temperate forest (31). Recently, some investigations have incorporated fungal DNA extraction from soil in addition to root extractions (9,(32)(33)(34)(35) as tools to describe the total AMF soil diversity, including actively functioning fungal taxa as well as dormant spores.In semiarid ecosystems, AMF play key roles in improving the function and adaptation of plant communities to these stressed environments. Despite their importance in semiarid regions, few studies have investigated AMF diversity and community composition, e.g., in plants from gypsum soils (6,29,36), in semiarid prairies (30), in degraded areas (37), and in a shrub community (38).…”

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Soil Characteristics Driving Arbuscular Mycorrhizal Fungal Communities in Semiarid Mediterranean Soils

Alguacil

Torres

Montesinos‐Navarro

et al. 2016

Appl Environ Microbiol

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We investigated communities of arbuscular mycorrhizal fungi (AMF) in the roots and the rhizosphere soil of Brachypodium retusum in six different natural soils under field conditions. We explored phylogenetic patterns of AMF composition using indicator species analyses to find AMF associated with a given habitat (root versus rhizosphere) or soil type. We tested whether the AMF characteristics of different habitats or contrasting soils were more closely related than expected by chance. Then we used principal-component analysis and multivariate analysis of variance to test for the relative contribution of each factor in explaining the variation in fungal community composition. Finally, we used redundancy analysis to identify the soil properties that significantly explained the differences in AMF communities across soil types. The results pointed out a tendency of AMF communities in roots to be closely related and different from those in the rhizosphere soil. The indicator species analyses revealed AMF associated with rhizosphere soil and the root habitat. Soil type also determined the distribution of AMF communities in soils, and this effect could not be attributed to a single soil characteristic, as at least three soil properties related to microbial activity, i.e., pH and levels of two micronutrients (Mn and Zn), played significant roles in triggering AMF populations. IMPORTANCECommunities of arbuscular mycorrhizal fungi (AMF) are main components of soil biota that can determine the productivity of ecosystems. These fungal assemblages vary across host plants and ecosystems, but the main ecological processes that shape the structures of these communities are still largely unknown. A field study in six different soil types from semiarid areas revealed that AMF communities are significantly influenced by habitat (soil versus roots) and soil type. In addition, three soil properties related to microbiological activity (i.e., pH and manganese and zinc levels) were the main factors triggering the distribution of AMF. These results contribute to a better understanding of the ecological factors that can shape AMF communities, an important soil microbial group that affects multiple ecosystem functions.A rbuscular mycorrhizal fungi (AMF) represent an important soil microbial group that affects multiple ecosystem functions and processes, including nutrient cycling, plant productivity and competition, and plant diversity. As a consequence, the number of ecological studies concerning AMF has increased considerably in recent years (1-9). Those studies considered AMF communities associated with different host plants in many different ecosystems. However, studies comparing the occurrence of specific AMF species and communities in different soil types are scarce and have focused mainly on cultivated soils and different land uses (10-13). Differences in soil types have been reported to be key factors determining AMF community composition (10), and this is particularly relevant in stressed environments such as serpentine soi...

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Section: Discussionsupporting

confidence: 55%

Section: Importancementioning

confidence: 99%

mentioning

confidence: 99%

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Soil Characteristics Driving Arbuscular Mycorrhizal Fungal Communities in Semiarid Mediterranean Soils

Alguacil

Torres

Montesinos‐Navarro

et al. 2016

Appl Environ Microbiol

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“…Explanations for such different effects could be (1) the host plants that were tested were different, C. dactylon in this study was a flooding-tolerant herbaceous plant with adventitious roots and aerenchyma, as AMF diversity was affected by the host plant identity [60,61]; (2) the land-use intensity was different, as the AMF diversity was affected by land-use intensity [67]. Thus, such effects may depend on region-specific factors, including host characteristics, environmental conditions, and land-use intensity [29,68,69]. On the one hand, this present study did show a higher AMF richness and diversity in the rhizosphere soils than in roots, which is consistent with findings from Pellegrino et al [70] and Moora et al [67].…”

Section: Differences In Amf Colonization Diversity and Community In mentioning

confidence: 99%

Soil Organic Carbon Shapes AMF Communities in Soils and Roots of Cynodon dactylon under Anti-Seasonal Drying-Wetting Cycles

Luo

et al. 2019

Diversity

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Anti-seasonal drying-wetting cycles since 2010 have substantially altered its soil and vegetation status in the drawdown zone of China’s Three Gorges Reservoir (TGR). Such alternations may thus affect the composition and functioning of soil microbial communities, including the beneficial arbuscular mycorrhizal fungi (AMF), which enhance plant performance. Moreover, limited information is available if AMF communities are different in soils and roots, particularly under contrasting land-use changes. By combining the Illumina Miseq sequencing with bioinformatics analyses, AMF communities in both rhizosphere soils and roots of a stoloniferous and rhizomatous C4 perennial of Cynodon dactylon were characterized under three land-use types: (1) crop cultivated, (2) non-cultivated non-disturbed, and (3) disturbed non-cultivated land. A total of 35 and 26 AMF taxa were respectively detected from C. dactylon rhizosphere soils and roots from these three land-use types, which had endured four anti-seasonal drying/summer-wetting/winter cycles. Contrasting differentiations in the AMF community composition and structure were displayed in the C. dactylon rhizosphere soils and roots, and between land-use types. Nonmetric multidimensional scaling analyses revealed that AMF communities significantly correlated to soil organic carbon in the rhizosphere soils and roots of C. dactylon, to land-use types only in rhizosphere soils, whereas to soil moisture only in roots. Our results highlight the effects of soil nutrients and land-use changes on AMF community composition and diversity under the canopy of C. dactylon in TGR. The identified dominant AMF taxa can be employed to vegetation restoration in such degraded habitats globally.

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“…High-intensity land uses analyzed previously were often associated with a reduction in AMF abundance and/or diversity (e.g., Van Geel et al 2015;Verbruggen et al 2015;Ciccolini et al 2015;Spurgeon et al 2013;Borriello et al 2012;Lumini et al 2010). AMF communities were characterized in spring and autumn 2011 on the basis of 454 sequencing of the internal transcribed spacer 2 (ITS2) rDNA region.…”

Section: Introductionmentioning

confidence: 99%

Arbuscular mycorrhizal fungal community differences among European long-term observatories

et al. 2016

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Arbuscular mycorrhizal fungal (AMF) communi-ties have been demonstrated to respond to a variety of biotic and abiotic factors, including various aspects of land manage-ment. Numerous studies have specifically addressed the im-pact of land use on AMF communities, but usually have been confined to one or a few sites. In this study, soil AMF assem-blages were described in four different long-term observato-ries (LTOs) across Europe, each of which included a site-specific high-intensity and a low-intensity land use. AMF communities were characterized on the basis of 454 sequenc-ing of the internal transcribed spacer 2 (ITS2) rDNA region. The primary goals of this study were (i) to determine the main Mycorrhiza factors that shape AMF communities in differentially man-aged sites in Europe and (ii) to identify individual AMF taxa or combinations of taxa suitable for use as biomarkers of land use intensification. AMF communities were distinct among LTOs, and we detected significant effects of management type and soil properties within the sites, but not across all sites. Similarly, indicator species were identified for specific LTOs and land use types but not universally for high-or low-intensity land uses. Different subsets of soil properties, includ-ing several chemical and physical variables, were found to be able to explain an important fraction of AMF community var-iation alone or together with other examined factors in most sites. The important factors were different from those for other microorganisms studied in the same sites, highlighting partic-ularities of AMF biology.

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Land-use intensity and soil properties shape the composition of fungal communities in Mediterranean peaty soils drained for agricultural purposes

Cited by 31 publications

References 86 publications

Soil Characteristics Driving Arbuscular Mycorrhizal Fungal Communities in Semiarid Mediterranean Soils

Soil Characteristics Driving Arbuscular Mycorrhizal Fungal Communities in Semiarid Mediterranean Soils

Soil Organic Carbon Shapes AMF Communities in Soils and Roots of Cynodon dactylon under Anti-Seasonal Drying-Wetting Cycles

Arbuscular mycorrhizal fungal community differences among European long-term observatories

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