Communities of arbuscular mycorrhizal fungi under Picconia azorica in native forests of Azores

Melo, Catarina; Luna, Sara; Krüger, Claudia; Walker, Christopher; Mendonça, Duarte; Fonseca, Henrique M.A.C.; Jaizme-Vega, María del Carmen; Machado, Artur Câmara

doi:10.1007/s13199-017-0487-2

Cited by 11 publications

(9 citation statements)

References 67 publications

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“…Soil type and climate determined the aeration and water content of soil, and the species diversity of AM fungi decreased significantly with the increase of flooding degree 54 . Environmental, geographical and historical factors were determinant in shaping AM fungal community 55,56 . In the course of evolution, the species richness and diversity of AM fungi changed with the evolution of host plants, and the host plants tended to choose AM fungi with high coexistence rate 57 .…”

Section: Discussionmentioning

confidence: 99%

Succession in arbuscular mycorrhizal fungi can be attributed to a chronosequence of Cunninghamia lanceolata

Wang

et al. 2019

Sci Rep

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Arbuscular mycorrhizal (AM) fungi play an important role in plant-fungi communities. It remains a central question of how the AM fungal community changes as plants grow. To establish an understanding of AM fungal community dynamics associated with Chinese fir, Chinese fir with five different growth stages were studied and 60 root samples were collected at the Jiangle National Forestry Farm, Fujian Province. A total of 76 AM fungal operational taxonomic units (OTUs) were identified by high-throughput sequencing on an Illumina Miseq platform. The genera covered by OTUs were Glomus, Archaeospora, Acaulospora, Gigaspora and Diversispora. Glomus dominated the community in the whole stage. The number and composition of OTUs varied along with the host plant growth. The number of OTUs showed an inverted V-shaped change with the host plant age, and the maximum occurred in 23-year. Overall, the basic species diversity and richness in this study were stable. Non-metric multi-dimensional scaling (NMDS) analysis based on bray-curtis distance revealed that there were remarkable differentiations between the 9-year and other stages. Besides, AM fungal community in 32-year had a significant difference with that of 23-year, while no significant difference with that of 45-year, suggesting that 32-year may be a steady stage for AM fungi associated with Chinese fir. The cutting age in 32-year may be the most favorable for microbial community. The pH, total N, total P, total K, available N, available P, available K, organic matter and Mg varied as the Chinese fir grows. According to Mantel test and redundancy analysis, available N, available P, K and Mg could exert significant influence on AM fungal communities, and these variables explained 31% of variance in the composition of AM fungal communities.

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Section: Discussionmentioning

confidence: 99%

Succession in arbuscular mycorrhizal fungi can be attributed to a chronosequence of Cunninghamia lanceolata

Wang

et al. 2019

Sci Rep

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“…According to Bonfim et al. (2016) , Shannon index:

, where

, n i = number of individuals of the species i , and N = total number of individuals of all species; Pielou's evenness index:

, in which

is value obtained by the Shannon index and S is the total number of species ( da Silva et al., 2015 ); richness was determined by the total number of species identified in fertilizer treatment, whereas mean species richness was obtained by the mean of the number of species obtained per sample ( Melo et al., 2018 ).…”

Section: Methodsmentioning

confidence: 99%

N-P fertilization did not reduce AMF abundance or diversity but alter AMF composition in an alpine grassland infested by a root hemiparasitic plant

Wang¹,

Sui²,

Liu³

et al. 2018

Plant Diversity

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Fertilization has been shown to have suppressive effects on arbuscular mycorrhizal fungi (AMF) and root hemiparasites separately in numerous investigations, but its effects on AMF in the presence of root hemiparasites remain untested. In view of the contrasting nutritional effects of AMF and root hemiparasites on host plants, we tested the hypothesis that fertilization may not show strong suppressive effects on AMF when a plant community was infested by abundant hemiparasitic plants. Plants and soil samples were collected from experimental field plots in Bayanbulak Grassland, where N and P fertilizers had been applied for three continuous years for control against a spreading root hemiparasite, Pedicularis kansuensis. Shoot and root biomass of each plant functional group were determined. Root AMF colonization levels, soil spore abundance, and extraradical hyphae length density were measured for three soil depths (0–10 cm, 10–20 cm, 20–30 cm). Partial 18S rRNA gene sequencing was used to detect AMF diversity and community composition. In addition, we analyzed the relationship between relative abundance of different AMF genera and environmental factors using Spearman's correlation method. In contrast to suppressive effects reported by many previous studies, fertilization showed no significant effects on AMF root colonization or AMF species diversity in the soil. Instead, a marked increase in soil spore abundance and extraradical hyphae length density were observed. However, fertilization altered relative abundance and AMF composition in the soil. Our results support the hypothesis that fertilization does not significantly influence the abundance and diversity of AMF in a plant community infested by P. kansuensis.

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“…Some case studies have identified previously unrecorded AM fungal phylogroups or morphospecies from island systems [56,57]. Measuring endemism is, however, contingent on the availability of comparative global data, while interpretation is also shaped by the taxonomic resolution of observations ( [58]; see the Supplementary Methods for a discussion of VT resolution).…”

Section: Few Endemic Taxa Among Island Am Fungal Communitiesmentioning

confidence: 99%

Microbial island biogeography: isolation shapes the life history characteristics but not diversity of root-symbiotic fungal communities

et al. 2018

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Island biogeography theory is one of the most influential paradigms in ecology. That island characteristics, including remoteness, can profoundly modulate biological diversity has been borne out by studies of animals and plants. By contrast, the processes influencing microbial diversity in island systems remain largely undetermined. We sequenced arbuscular mycorrhizal (AM) fungal DNA from plant roots collected on 13 islands worldwide and compared AM fungal diversity on islands with existing data from mainland sites. AM fungal communities on islands (even those >6000 km from the closest mainland) comprised few endemic taxa and were as diverse as mainland communities. Thus, in contrast to patterns recorded among macro-organisms, efficient dispersal appears to outweigh the effects of taxogenesis and extinction in regulating AM fungal diversity on islands. Nonetheless, AM fungal communities on more distant islands comprised a higher proportion of previously cultured and large-spored taxa, indicating that dispersal may be human-mediated or require tolerance of significant environmental stress, such as exposure to sunlight or high salinity. The processes driving large-scale patterns of microbial diversity are a key consideration for attempts to conserve and restore functioning ecosystems in this era of rapid global change.

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Communities of arbuscular mycorrhizal fungi under Picconia azorica in native forests of Azores

Cited by 11 publications

References 67 publications

Succession in arbuscular mycorrhizal fungi can be attributed to a chronosequence of Cunninghamia lanceolata

Succession in arbuscular mycorrhizal fungi can be attributed to a chronosequence of Cunninghamia lanceolata

N-P fertilization did not reduce AMF abundance or diversity but alter AMF composition in an alpine grassland infested by a root hemiparasitic plant

Microbial island biogeography: isolation shapes the life history characteristics but not diversity of root-symbiotic fungal communities

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