Distribution of arbuscular mycorrhizal fungi spores in soils of smallholder agroforestry and monocultural coffee systems in southwestern Ethiopia

Muleta, Diriba; Assefa, Fassil; Nemomissa, Sileshi; Granhall, Ulf

doi:10.1007/s00374-007-0261-3

Cited by 100 publications

(82 citation statements)

References 24 publications

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“…The fluctuation in the number of MVA spores observed could be attributed to the process of spore formation, their germination and degradation (Smith, 1980), the sampling season (Gemma et al, 1999), soil and climatic variations (Koske, 1987;Johnson et al, 1991) and soil microorganisms (Dalpe, 1989). We found the spores of genera Glomus to be dominant, as has been reported elsewhere from Latin America (Lopes et al 1983;Cruz 1989) and southwestern Ethiopia (Muleta et al, 2008;Jefwa et al, 2009), dry Afromontane forests of Ethiopia (Tesfaye et al, 2004), the tropical rain forest of Xishuangbanna, China (Zhao et al, 2001), tropical rain forest in Mexico (Guadarrama and AlvarezSanchez, 1999), and the arid and semi arid lands of North Jordan (Mohammad et al, 2003). Different authors have associated the high incidence of Glomus spores with their capacity to produce more spores in a shorter time than other genera such as Gigaspora and Scutellospora (Bever et al, 1996).…”

Section: Discussionsupporting

confidence: 88%

Diversity of arbuscular mycorrhizal fungi in the rhizosphere of <i>Coffea arabica</i> in the Republic of Yemen

Al-Arequi¹,

Chliyeh²,

Touhami³

et al. 2013

J. App. Bioscience.

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Objective: This study describes the status of mycorrhizal fungi in coffee (Coffea arabica) in the Yemeni ecosystems. Methodology and results: Soil samples were extracted from the rhizosphere of the coffee tree groves in several regions of Yemen. The frequency and the level of colonization of the arbuscular mycorrhizal fungi (AMF) inside the root bark were measured by assigning an index of mycorrhization from 0 to 5 (Derkowska et al., 2008). The results showed that the AM fungal colonization structures were hyphae, coils and vesicles. The mycorrhizal frequency and intensity reached respectively 100 and 48 % in the Taiz 2 site. The highest spore density was in the order of 100 spores/100 g of soil and the genus Glomus was dominant. The tentative identification test of VAM (Vesicular Arbuscular Mycorrhizae) species, isolated from the rhizosphere of the coffee trees, revealed the presence of five fungal species:, Glomus proliferum, G. etunicatum, Acaulospora sporocarpia, Acaulospora sp.1, Archeospora sp. 1, Scutellospora nigra. Conclusion and application of results: In all the studied sites the coffee roots were mycorrhized. These results demonstrate the existence of opportunities for the application of controlled mycorrhization in the coffee Seedlings nurseries.

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Section: Discussionsupporting

confidence: 88%

Diversity of arbuscular mycorrhizal fungi in the rhizosphere of <i>Coffea arabica</i> in the Republic of Yemen

Al-Arequi¹,

Chliyeh²,

Touhami³

et al. 2013

J. App. Bioscience.

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“…Families of Acanthaceae, Boraginaceae, Meliaceae, and Moraceae had significantly higher spore density 100 g −1 dry soil while lowest spore counts were found in Aloeaceae, Cactaceae, and Polygonaceae rhizosphere soils. Low AMF spore count was reported by Muleta et al (2008) for coffee and in a dry savannah wood land ecosystem under Acacia polyacantha rhizosphere soil .…”

Section: Amf In Different Woody Plant Species and Their Familiesmentioning

confidence: 81%

“…The predominance of Glomus species under varying soil conditions might be due to its wide adaptability to the varied soil conditions and survive in acidic as well as in alkaline soils (Tanvir et al 2011;Pande and Tarafdar 2004). Spore density in undisturbed natural environment is higher than disturbed sites (Chanie and Assefa 2013;Muleta et al 2008). AMF plays a role in the formation of stable soil aggregates, building up a macroporous structure of soil that allows penetration of water and air and prevents erosion (Rillig 2004;Borie et al 2008;Aggarwal et al 2011); therefore, the application of AMF is of interest for the reclamation and revegetation of degraded lands (Miller and Jastrow 1992).…”

Section: Resultsmentioning

confidence: 99%

“…Wide occurrence of Glomus in the present study suggested that the genus Glomus has wide ecological amplitude that is responsible for its adaptability and survival in different habitats and vegetation composition. The dominance of Glomus species has been reported from tree species in Ethiopia (Birhane et al 2010;Wubet et al 2003Wubet et al , 2009Muleta et al 2008). The variation in spore density between plants species may be due to differences in host trees which can be attributed to the type of AMF species associated with their respective hosts (Cardoso et al 2003;Pringle and Bever 2002).…”

Section: Amf In Different Woody Plant Species and Their Familiesmentioning

confidence: 99%

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Exclosures restored the density and root colonization of arbuscular mycorrhizal fungi in Tigray, Northern Ethiopia

et al. 2017

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Introduction: Exclusion of grazing animals and tree plantations were among the methods used for the restoration of degraded lands in tropical semiarid areas. Exclosures can foster secondary forest succession by improving soil conditions and modifying microclimate for understory growth. This paper compared the arbuscular mycorrhizal fungi (AMF) spore density, root colonization of woody plants and soil chemical properties under exclosure with increasing age, and grazing land at different slope positions. Methods: The study was conducted in northern Ethiopia from 12 exclosure sites paired each with adjacent grazing land in total from 24 sites with four treatments replicated three times. In the entire study, 216 plots were examined of which 108 were in exclosures and 108 in communal grazing lands. There were four age classes and three slope positions in each of the land uses. Composite soil and root samples were collected using nested plots measuring 100m 2 from four sides of 1763 plants for spore enumeration and root colonization. Soils for chemical properties were collected from the four corners and center of 5 m × 5 m plots. Results: All the 61 woody plant species that belong to 41 families were colonized by AMF. Spore density and root colonization were significantly higher in exclosures as compared to grazing land and increased with increasing ages of exclosures. Foot slope had significantly higher spore density and root colonization than middle and upper slopes. Soil chemical properties were significantly higher in the exclosure, oldest age of exclosure, and foot slope position (except P). AMF spore density and root colonization were significantly positively correlated with soil chemical properties.

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“…The native trees showed higher AM colonization when mixed compared to monoculture. Agroforestry systems are usually more productive and allow a larger diversity and/or abundance of AM than monocultures [2,17,46,112]. Microscopic examination of sections shows that all the native species presented Arum-type colonization in their roots, and significant AM morphological structures were documented (extraradical hyphae, intraradical hyphae, hyphal coils, arbuscules, and vesicles).…”

Section: Seasonal Development Of Mycorrhizas In Forested Treesmentioning

confidence: 99%

Mycorrhizal Interactions for Reforestation: Constraints to Dryland Agroforest in Brazil

Pagano

Cabello

2011

ISRN Ecology

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Reforestation provides restoration of forest ecosystem services including improved soil fertility, which leads to increased productivity and/or sustainability of the system. Trees also increase the average carbon stocks providing wood supply for local communities; however, C sequestration strategies highlight tree plantations without considering their full environmental consequences, such as losses in stream flow. The productivity of a site is a consequence of their physical, chemical, and biological properties, resulting in natural fertile soils or adequate managed soils for improved quality. Thus, it is required to know the variations in the properties of land-use systems for adoptability of agroforestry innovations. The choice of agroforestry tree species (highly mycorrhizal dependent plants should be selected) would have great implications for the manipulation of arbuscular mycorrhizas's species. In dry forest, the inevitable consequence of cutting has been the loss of vegetation cover and insufficient scientific information on the capacity to optimize forest recuperation affects agroforestry adoption. To study the biological properties of soils is now of interest; therefore, this paper reviews the literature that has hitherto been published on mycorrhizal interactions for reforestation and points out the use of mycorrhizal technology as one of the alternatives to improve forest products and environmental quality.

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Distribution of arbuscular mycorrhizal fungi spores in soils of smallholder agroforestry and monocultural coffee systems in southwestern Ethiopia

Cited by 100 publications

References 24 publications

Diversity of arbuscular mycorrhizal fungi in the rhizosphere of <i>Coffea arabica</i> in the Republic of Yemen

Diversity of arbuscular mycorrhizal fungi in the rhizosphere of <i>Coffea arabica</i> in the Republic of Yemen

Exclosures restored the density and root colonization of arbuscular mycorrhizal fungi in Tigray, Northern Ethiopia

Mycorrhizal Interactions for Reforestation: Constraints to Dryland Agroforest in Brazil

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