Arbuscular mycorrhizal fungal spore communities of a tropical dry forest ecosystem show resilience to land-use change

Carrillo-Saucedo, Silvia Margarita; Gavito, Mayra E.; Siddique, Ilyas

doi:10.1016/j.funeco.2017.11.006

Cited by 34 publications

(17 citation statements)

References 53 publications

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“…Some AM fungi disperse relatively efficiently, as demonstrated by recent results showing that AM fungi can reach newly exposed substrates within 1 y after disturbance (García de León et al 2016a, Nielsen et al 2016. Furthermore, resilience of AM fungal communities to land-use intensification was shown by a recent study in tropical dry forest (Carrillo-Saucedo et al 2018).…”

Section: Discussionmentioning

confidence: 84%

Arbuscular mycorrhizal fungal communities in tropical rain forest are resilient to slash-and-burn agriculture

et al. 2018

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Abstract:Certain forestry and agricultural practices are known to affect arbuscular mycorrhizal (AM) fungal communities, but the effects of deforestation – including slash-and-burn management and other more severe disturbances – in tropical rain forests are poorly understood. We addressed the effects of anthropogenic disturbance on rain-forest AM fungal communities in French Guiana, by comparing mature tropical rain forest, slash-and-burn (5 y old) and clearcut areas (8 y old). A total of 36 soil samples were collected in six plots and sequenced using a high throughput 454-pyrosequencing platform. A total of 32649 sequences from 103 AM fungal virtual taxa (VT) were recorded. Whereas alpha diversity of AM fungi did not decrease due to land-use intensification, with average richness ranging from 17 to 21 taxa per plot, beta diversity (average distance to multivariate centroid) dropped by 28% from 0.46 in rain forest to 0.33 under clearcutting. AM fungal community composition was correlated with land use and soil chemical properties. Clearcut areas were characterized by the more frequent occurrence of specialist AM fungi, compared with mature forest or slash-and-burn areas. Specifically, clearcuts contained the highest proportions of VT that were geographic (21%), habitat (31%), abundance (97%) or host (97%) specialists based on VT metadata contained in the MaarjAM database. This suggests that certain AM fungi with narrow ecological niches have traits that allow them to exploit conditions of severe disturbance. In conclusion, slash-and-burn management appears to allow diverse AM fungal communities to persist, and may favour regeneration of tropical rain forest after abandonment. More severe disturbance in the form of clearcutting resulted in marked changes in AM fungal communities.

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Section: Discussionmentioning

confidence: 84%

Arbuscular mycorrhizal fungal communities in tropical rain forest are resilient to slash-and-burn agriculture

et al. 2018

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“…5 Venn diagram of OTUs occurring in mycorrhizas and soil. There is a strong overlap of the AMF community in mycorrhizas and in the soil numbers (Aguilar-Fernandéz et al 2009, Carillo-Saucedo et al 2018Guadarrama et al 2014, Sousa et al 2018, Marinho et al 2019and Teixeira-Rios et al 2018.…”

Section: Comparison Of Amf From Laipuna With Amf In Tropical Rain Forests Of Southern Ecuadormentioning

confidence: 99%

“…Studies of AMF communities in tropical dry forests have only been conducted so far in Mexico (Aguilar-Fernandéz et al 2009, Carillo-Saucedo et al 2018, Guadarrama et al 2014, Brazil (Sousa et al 2018, Marinho et al 2019and Teixeira-Rios et al 2018, and Africa (Wubet et al 2003(Wubet et al , 2006(Wubet et al , 2009. Albeit the difficulties in comparing spore results vs. molecular Fig.…”

Section: Amf Community Of Laipuna In a Global Contextmentioning

confidence: 99%

“…Neotropical dry forests are distinguished into 12 groups, based on the occurrence and frequency of their woody species (DRYFLOR et al 2016): (i) Mexico, (ii) Antilles, (iii) Central America-northern South America, (iv) northern inter-Andean valleys, (v) central inter-Andean valleys, (vi) central Andes coast, (vii) Tarapoto-Quillabamba, (viii) Apurimac-Mantaro, (ix) Piedmont, (x) Misiones, (xi) central Brazil, and (xii) Caatinga. For most of the floristic groups, no studies about mycorrhizal communities exist, with the exception of Mexico (i) (Aguilar-Fernandéz et al 2009, Carillo-Saucedo et al 2018, Guadarrama et al 2014 and Caatinga (xii) in Brazil (Sousa et al 2018, Marinho et al 2019, Teixeira-Rios et al 2018. All of these studies used spores to identify AMF, and based on that, the results show a high level of agreement with dominant representatives of the Glomeraceae and Acaulosporaceae.…”

Section: Introductionmentioning

confidence: 99%

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Global AM fungi are dominating mycorrhizal communities in a tropical premontane dry forest in Laipuna, South Ecuador

Haug

Setaro²,

Suárez

2021

Mycol Progress

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Tropical dry forests are an intricate ecosystem with special adaptations to periods of drought. Arbuscular mycorrhizal fungi (AMF) are essential for plant survival in all terrestrial ecosystems but might be of even greater importance in dry forests as plant growth is limited due to nutrient and water deficiency during the dry season. Tropical dry forests in Ecuador are highly endangered, but studies about AMF communities are scarce. We investigated the AMF community of a premontane semi-deciduous dry forest in South Ecuador during the dry season. We estimated AMF diversity, distribution, and composition of the study site based on operational taxonomic units (OTUs) and compared the results to those from the tropical montane rainforest and páramo in South Ecuador. OTU delimitation was based on part of the small ribosomal subunit obtained by cloning and Sanger sequencing. Nearly all OTUs were Glomeraceae. The four frequent OTUs were Glomus, and comparison with the MaarjAM database revealed these to be globally distributed with a wide range of ecological adaptations. Several OTUs are shared with virtual taxa from dry forests in Africa. Ordination analysis of AMF communities from the tropical dry and montane rainforests in South Ecuador revealed a unique AMF community in the dry forest with only few overlapping OTUs. Most OTUs that were found in both dry and rainforests and on the two continents were globally distributed Glomus.

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“…It has also been reported that the influence of soil properties on AMF communities is site specific (Mangan, Eom, Adler, Yavitt, & Herre, 2004;Pereira, da Silva, de Almeida Ferreira, Goto, & Maia, 2014). For example, (Carrillo-Saucedo, Gavito, & Siddique, 2018) reported that diversity, evenness, and richness indices of AMF was lower in climax communities such as forests compared to continuously disturbed agricultural fields. However, Bainard et al (2015) in their study in tropical dry forest ecosystem found that AMF fungal spore communities were resistant to land-use change and management.…”

Section: Introductionmentioning

confidence: 99%

Influence of Land Use Intensity and Management on Arbuscular Mycorrhizal Fungi-Avocado Symbiosis

Soti¹,

Toprak²,

Rosa³

et al. 2021

JAS

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This study was done to assess the effect of soil disturbance on arbuscular mycorrhizal fungi spore abundance and root colonization in avocado (Persea americana Mill.). Rhizosphere soil and root samples of avocado were collected from different farms in south Florida and analyzed for degree of mycorrhizal colonization in roots, spore density and diversity in soil along with soil characteristics. There was significant difference in the soil characteristics among the different farms. Similarly, there was a significant difference in the degree of mycorrhizal colonization in the roots and the arbuscular mycorrhizal fungi spore morphotypes among different land use and management practices. However, there was no significant difference in the total number of arbuscular mycorrhizal fungi spores among these sites. There was no correlation between the number of arbuscular mycorrhizal fungi spores and soil characteristics. However, arbuscular mycorrhizal fungi colonization in roots were strongly influenced by soil characteristics such as soil moisture, carbon, nitrogen, and organic matter. Further research is necessary to identify these AMF species and determine the role of in avocado growth tolerance to anthropogenic disturbance in highly disturbed urban soils.

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Arbuscular mycorrhizal fungal spore communities of a tropical dry forest ecosystem show resilience to land-use change

Cited by 34 publications

References 53 publications

Arbuscular mycorrhizal fungal communities in tropical rain forest are resilient to slash-and-burn agriculture

Arbuscular mycorrhizal fungal communities in tropical rain forest are resilient to slash-and-burn agriculture

Global AM fungi are dominating mycorrhizal communities in a tropical premontane dry forest in Laipuna, South Ecuador

Influence of Land Use Intensity and Management on Arbuscular Mycorrhizal Fungi-Avocado Symbiosis

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