Mycorrhization of Fagaceae Forests Within Mediterranean Ecosystems

Reis, Francisca; Tavares, R. M.; Baptista, Paula; Lino-Neto, Teresa

doi:10.1007/978-3-319-53064-2_6

Cited by 6 publications

(7 citation statements)

References 129 publications

(115 reference statements)

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“…The ECM fungal community associated with cork oaks was mainly represented by Russula (29%), Tomentella (20%), and Cenoccoccum (10%), which is in accordance with other reports on Q. suber forests that also describe a highly enriched ECMF community with C. geophilum, Russulaceae, and Thelephoraceae (Yakhlef et al 2009;Azul et al 2010;Lancellotti and Franceschini 2013;Maghnia et al 2017). This trend is commonly seen in other Fagaceae forests (reviewed by Reis et al (2017)). While C. geophilum was the main ECM root tip identified in the Q. ilex forests (Richard et al 2011), Russula was the most abundant genus in Q. suber landscapes (Azul et al 2010).…”

Section: Ecmf Community Associated With Cork Oak In Different Landscapessupporting

confidence: 57%

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

et al. 2018

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Cork oak (Quercus suber L.) forests play an important ecological and economic role. Ectomycorrhizal fungi (ECMF) are key components for the sustainability and functioning of these ecosystems. The community structure and composition of ECMF associated with Q. suber in different landscapes of distinct Mediterranean bioclimate regions have not previously been compared. In this work, soil samples from cork oak forests residing in different bioclimates (arid, semi-arid, sub-humid, and humid) were collected and surveyed for ectomycorrhizal (ECM) root tips. A global analysis performed on 3565 ECM root tips revealed that the ECMF community is highly enriched in Russula, Tomentella, and Cenoccocum, which correspond to the ECMF genera that mainly contribute to community differences. The ECMF communities from the rainiest and the driest cork oak forests were distinct, with soils from the rainiest climates being more heterogeneous than those from the driest climates. The analyses of several abiotic factors on the ECMF communities revealed that bioclimate, precipitation, soil texture, and forest management strongly influenced ECMF structure. Shifts in ECMF with different hyphal exploration types were also detected among forests, with precipitation, forest system, and soil texture being the main drivers controlling their composition. Understanding the effects of environmental factors on the structuring of ECM communities could be the first step for promoting the sustainability of this threatened ecosystem.

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Section: Ecmf Community Associated With Cork Oak In Different Landscapessupporting

confidence: 57%

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

et al. 2018

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“…This cork oak density and tree distribution are closely related to water availability. Climate changes, such as increased temperatures and reduction of water availability, are currently posing a challenge to cork oak forests (reviewed by Reis et al 2017;Maghnia et al 2019). Since a reduction in water availability is expected soon (Malek and Verburg 2018), decrease in Q. suber growth and productivity, as well as the long-term sustainability of these ecosystems, may be further threatened (Acácio et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Bacteria could help ectomycorrhizae establishment under climate variations

et al. 2021

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Rhizosphere microbiome is one of the main sources of plant protection against drought. Beneficial symbiotic microorganisms, such as ectomycorrhizal fungi (ECMF) and mycorrhiza helper bacteria (MHB), interact with each other for increasing or maintaining host plant fitness. This mutual support benefits all three partners and comprises a natural system for drought acclimation in plants. Cork oak (Quercus suber L.) tolerance to drought scenarios is widely known, but adaptation to climate changes has been a challenge for forest sustainability protection. In this work, ECMF and MHB communities from cork oak forests were cross-linked and correlated with climates. Cenococcum, Russula and Tuber were the most abundant ECMF capable of interacting with MHB (ECMF~MHB) genera in cork oak stands, while Bacillus, Burkholderia and Streptomyces were the most conspicuous MHB. Integrating all microbial data, two consortia Lactarius/Bacillaceae and Russula/Burkholderaceae have singled out but revealed a negative interaction with each other. Russula/Burkholderaceae might have an important role for cork oak forest sustainability in arid environments, which will be complemented by the lower drought adaptation of competitive Lactarius/Bacillaceae. These microbial consortia could play an essential role on cork oak forest resilience to upcoming climatic changes.

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“…For facing the upcoming climate changes, the microbial community present in the soil of cork oak forests has been recognized as one of the main drivers for forest sustainability (Reis et al, 2017;Maghnia et al, 2019). Different soil layers are enriched with microbes displaying different lifestyles.…”

Section: Introductionmentioning

confidence: 99%

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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Mycorrhization of Fagaceae Forests Within Mediterranean Ecosystems

Cited by 6 publications

References 129 publications

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

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

Bacteria could help ectomycorrhizae establishment under climate variations

Climatic impacts on the bacterial community profiles of cork oak soils

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