Ectomycorrhizal fungal diversity and community structure associated with cork oak in different landscapes

Reis, Francisca; Valdiviesso, T.; Varela, Carolina; Tavares, R. M.; Baptista, Paula; Lino-Neto, Teresa

doi:10.1007/s00572-018-0832-1

Cited by 23 publications

(27 citation statements)

References 49 publications

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“…Five independent geographic locations ( Fig. S1) were selected based on local weather conditions and water availability levels (Portuguese Sea and Atmosphere Institute), previous information of cork oak stands (Varela and Eriksson, 1995), and local Emberger indexes that define the corresponding Mediterranean climates (Rego and Rocha, 2014;Reis et al, 2018; Table S1). Based on annual precipitation means, Peneda-Gerês (PG, 120.7 mm) and Herdade da Contenda (HC, 46.5 mm) comprised the extreme conditions.…”

Section: Cork Oak Stands and Sample Collectionmentioning

confidence: 99%

“…The sampled forests were separated into four distinct Mediterranean climates: humid (PG, Q = 186.6), sub-humid (LI, Q = 88.9; AL, Q = 102.7), semi-arid (GR, Q = 77.5) and arid (HC, Q = 43.5). The same soil samples had been previously used for assessing ectomycorrhizal communities (through root tips barcoding) in these cork oak stands (Reis et al, 2018).…”

Section: Cork Oak Stands and Sample Collectionmentioning

confidence: 99%

“…Soils sampling was conducted on the seven cork oak forests during the autumn (November and December) of 2013, using the procedure described by Reis et al (2018). Five independent healthy trees, separated at least 30 m from each other, were selected.…”

Section: Cork Oak Stands and Sample Collectionmentioning

confidence: 99%

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Climatic impacts on the bacterial community profiles of cork oak soils

Reis

Soares-Castro

Costa

et al. 2019

Applied Soil Ecology

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Climate changes comprise increasing global temperature and water cycle deregulation (precipitation storms and long dry seasons). Many affected ecosystems are located within the Mediterranean basin, where cork oak (Quercus suber L.) is one of the most important forest ecosystems. Despite cork oak tolerance to drought, the decrease of water availability and increase of temperature is causing a serious decline of cork oak populations. In the present work, the bacterial community of cork oak soils was assessed by metabarcoding using Illumina Miseq. Soils from seven independent cork oak forests were collected along a climate gradient. In all forest soils, Proteobacteria and Actinobacteria were the richest and more abundant bacteria. Acidobacteria also presented a high relative abundance, and Chloroflexi was a rich phylum. The soil bacterial community diversity and composition was strongly affected by the climatic region where cork oak resides and specific bacterial taxa were differently affected by precipitation and temperature. Accordingly, cork oak bacterial communities clustered into three distinct groups, related with humid, sub-humid and arid/semi-arid climates. Driest and warmer forests presented more diverse bacterial communities than humid and coolest forests. However, driest climates presented more homogenous bacterial communities among forests than humid climates. Climate (mainly precipitation) revealed to be the strongest driver leading to significant variations of bacterial community profiles. The most impacted bacterial taxa by climatic variables were Proteobacteria, in particular Gammaproteobacteria and Deltaproteobacteria, Chloroflexi, and Firmicutes. Humid forests presented mainly Acidobacteria as good indicators of climate, whereas Actinobacteria members were better indicators for arid forests (mainly Gaiellales and Frankiales). Some indicator species for different climate conditions were members of the bacterial core of cork oak stands (7% of the total bacterial community). Taken together, different microbiomes were selected by the climate conditions in cork oak stands along a climate gradient and might provide the key to forest sustainability in times of global warming. challenge to cork oak forests (reviewed by Reis et al., 2017; Maghnia et al., 2019). An adaptation of cork oak populations to drier and warmer conditions is expectable (Varela et al., 2015), but the decline of existing populations have been described all over Mediterranean basin (reviewed by Reis et al., 2017). From the huge diversity of microbes present in cork oak soils, fungal communities are those more related with water transfer and increasing water availability to plants. This is mostly due to the ability of ectomycorrhizal fungi to become associated to cork oak roots, promoting water and nutrients transfer (Reis et al., 2017). However, bacteria also play an important ecological role on forest soils. Besides being important for decomposition of organic matter, N fixation, mineral weathering and consequently the release of inorg...

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Section: Cork Oak Stands and Sample Collectionmentioning

confidence: 99%

Section: Cork Oak Stands and Sample Collectionmentioning

confidence: 99%

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Climatic impacts on the bacterial community profiles of cork oak soils

Reis

Soares-Castro

Costa

et al. 2019

Applied Soil Ecology

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“…In an arid and seasonally water-deficient environment, some EcMF taxa prone to melanization of the cell wall (e.g., Cenococcum geophilum Fr.) may become dominant, as the melanization of cell walls enhances drought tolerance in EcMF [120][121][122]. Moreover, the exploration type of extramatrical mycelium of EcMF might change under water stress [121], from primarily contact exploration like Lactarius tabidus Fr.…”

Section: The Impact Of Environmental Change On Ecmfmentioning

confidence: 99%

Ectomycorrhizal Fungi: Participation in Nutrient Turnover and Community Assembly Pattern in Forest Ecosystems

Liu

Kou

2020

Forests

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Ectomycorrhizal fungi (EcMF) are involved in soil nutrient cycling in forest ecosystems. These fungi can promote the uptake of nutrients (e.g., nitrogen (N) and phosphorus (P)) and water by host plants, as well as facilitate host plant growth and resistance to stresses and diseases, thereby maintaining the aboveground primary productivity of forest ecosystems. Moreover, EcMF can acquire the carbon (C) sources needed for their growth from the host plants. The nutrient regulation mechanisms of EcMF mainly include the decay of soil organic matter via enzymatic degradation, nonenzymatic mechanism (Fenton chemistry), and priming effects, which in turn promote C and N cycling. At the same time, EcMF can secrete organic acids and phosphatases to improve the availability of soil P, or increase mycelium inputs to facilitate plant acquisition of P. The spatiotemporal distribution of EcMF is influenced by a combination of historical factors and contemporary environmental factors. The community of EcMF is associated with various factors, such as climate change, soil conditions, and host distribution. Under global climate change, investigating the relationships between the nutrient cycling functions of EcMF communities and their distribution patterns under various spatiotemporal scales is conducive to more accurate assessments of the ecological effects of EcMF on the sustainable development of forest.

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“…Moreover, montado biodiversity is more than an existence value, being critical to maintain the functional balance between all the components of the system, particularly those related with soil. For example, ectomycorrhizal fungi are key components for the functioning and long-term persistence of montados (Reis et al, 2018), through establishing symbiotic relationships with tree roots that allows increasing tree survival and growth rate (Dinis et al, 2016), protecting plant from soil pathogens (Corcobado et al, 2014), improving drought resistance (Sebastiana et al, 2018), and providing nutrients (Sebastiana et al, 2017).…”

Section: Addressing Montado Complexity Through Emergy Assessmentmentioning

confidence: 99%

Emergy evaluation for decision-making in complex multifunctional farming systems

Fonseca

Marques

Correia

et al. 2019

Agricultural Systems

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In a montado farm, commonly found in the South Portugal, human activities benefit from important fluxes of renewable resources. In this study, traditional economic and emergy evaluations are compared to determine their potential contributions to understanding this complex system and applied to a case study of a farm. This allows us to determine how each method values local natural resources and purchased factors of production and services in an empirical context. Results show that the montado farm has a renewable component evaluated at 27% of the total social costs of the system and that the work of natural resources is undervalued in economic budget accounting. Economic evaluation's relative value of purchased factors and services is three and half times higher than their emergy share. We propose that complementing economic budget accounting with emergy accounting provides a benchmark to evaluate the environmental contribution to agricultural and farming systems. In this way, factors external to markets can be evaluated for farming systems, bringing to economic analysis a full evaluation of resources, including the bio-geophysical system's contributions to wealth, enlarging total economic value of resources with a donor perspective enabling a better informed and comprehensive accounting to attain sustainable economic decisions and public policies.

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Ectomycorrhizal fungal diversity and community structure associated with cork oak in different landscapes

Cited by 23 publications

References 49 publications

Climatic impacts on the bacterial community profiles of cork oak soils

Climatic impacts on the bacterial community profiles of cork oak soils

Ectomycorrhizal Fungi: Participation in Nutrient Turnover and Community Assembly Pattern in Forest Ecosystems

Emergy evaluation for decision-making in complex multifunctional farming systems

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