Occurrence and diversity of arbuscular mycorrhizal fungi in trap cultures from El Palmar National Park soils

Velázquez, Silvana; Cabello, Marta Noemí

doi:10.1016/j.ejsobi.2011.05.002

Cited by 15 publications

(10 citation statements)

References 35 publications

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“…The native soil microbial populations including AMF possess certain adaptative advantages; thus, it is important to generate fundamental knowledge about their diversity [57][58][59][60]. Such knowledge allows us to better exploration and understanding on the functionality of AMF in order to screen and select those promising species or consortia whose characteristics favor either exploitation and conservation of this genetic resource, as well as diminishing the application of foreign commercial inoculum whose benefits are uncertain and their ecological impact on native soil microbial population are still unknown as well.…”

Section: Amf Diversity and Effectiveness In Wild Plant Speciesmentioning

confidence: 99%

Diversity and Agricultural Applications of Arbuscular Mycorrhizal Fungi in Mexico

Alej¹,

Alarcon²,

Hern³

et al. 2012

J Biofertil Biopestici

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The knowledge about the genetic and the functional diversity of Arbuscular Mycorrhizal Fungi (AMF) is an important ecological issue that deserves greater research efforts specially when trying to use them into biotechnological approaches in agriculture, horticulture, forestry and ecological restoration. Genetic diversity of AMF is almost unexplored in Mexico. In turn, the functional diversity of these fungi has been poorly evaluated from some ecological studies. However, based on the beneficial effects on growth promotion and nutrition of plants of agronomic importance, some promising strains and consortia of AMF have been obtained. This work shows the beneficial effects of AMF that were isolated from several regions of the Mexican Republic, and to highlight the need to explore the genetic and the functional diversity of AMF from different ecosystems and agrosystems of Mexico, which is considered not only as one of the most biodiverse countries but also for being a domestication center for several cultivated plants which are important from a cultural and a human nutrition point of view.

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Section: Amf Diversity and Effectiveness In Wild Plant Speciesmentioning

confidence: 99%

Diversity and Agricultural Applications of Arbuscular Mycorrhizal Fungi in Mexico

Alej¹,

Alarcon²,

Hern³

et al. 2012

J Biofertil Biopestici

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“…On the other side, specialized “mycorrhiza helper bacteria” promote the activity and development of AM fungi with their effects being fungal specific. In particular, the AM fungus Glomus intraradices renamed Rhizophagous irregularis belonging to the Phylum Glomeromycota has been found in symbiosis with the majority of terrestrial vascular plants [4],[5],[6]. Inoculation with this fungus significantly influenced the development of the bacterial community of tomato rhizosphere [7] due to the suppression or stimulation of one or more susceptible microbial populations [8].…”

Section: Introductionmentioning

confidence: 99%

The effects of arbuscular mycorrhizal fungi and essential oil on soil microbial community and N-related enzymes during the fungal early colonization phase

Stamou

Konstadinou²,

Monokrousos³

et al. 2017

AIMS Microbiology

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The arbuscular mycorrhizal fungi (AMF) and the essential oils are both agents of sustainable agriculture, and their independent effects on the community of free-living soil microbes have been explored. In a tomato pot experiment, conducted in a sandy loam mixture, we examined the independent and joint effects of inoculation with the fungus Rhizophagous irregularis and the addition of Mentha spicata essential oil on the structure of the soil microbial community and the activity of soil enzymes involved in the N-cycle, during the pre-symbiosis phase. Plants were grown for 60 days and were inoculated with R. irregularis. Then pots were treated with essential oil (OIL) weekly for a period of a month. Two experimental series were run. The first targeted to examine the effect of inoculation on the microbial community structure by the phospholipid fatty acids analysis (PLFAs), and enzyme activity, and the second to examine the effects of inoculation and essential oil addition on the same variables, under the hypothesis that the joint effect of the two agents would be synergistic, resulting in higher microbial biomass compared to values recorded in singly treated pots. In the AMF pots, N-degrading enzyme activity was dominated by the activity of urease while in the non-inoculated ones by the activities of arylamidase and glutaminase. Higher microbial biomass was found in singly-treated pots (137 and 174% higher in AMF and OIL pots, respectively) compared with pots subjected to both treatments. In these latter pots, higher activity of asparaginase (202 and 162% higher compared to AMF and OIL pots, respectively) and glutaminase (288 and 233% higher compared to AMF and OIL pots, respectively) was found compared to singly-treated ones. Soil microbial biomasses and enzyme activity were negatively associated across all treatments. Moreover, different community composition was detected in pots only inoculated and pots treated only with oil. We concluded that the two treatments produced diverging than synergistic effects on the microbial community composition whereas their joint effect on the activity of asparaginase and glutaminase were synergistic.

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“…), which are characterized by producing a high number of spores of small size and rapid germination. In general, they are considered to be opportunistic, because they can rapidly take advantage of favourable conditions under varied and fluctuating environments (Velázquez & Cabello, 2011). In this study, the total abundance of spores was analysed seasonally in sites with different agricultural practices, over a 2-year period.…”

Section: Discussionmentioning

confidence: 99%

Diversity and abundance of arbuscular mycorrhizal fungi (Glomeromycota) associated with Ilex paraguarensis in Northeastern Argentina

Velázquez¹,

Fabisik

Barrera³

et al. 2020

RBT

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Introduction: The expansion and intensification of agriculture causes profound changes at a global scale, which generates a strong impact on crop productivity and consequently, a decrease in the biodiversity associated. Ilex paraguariensis, known as yerba mate, is a native species from South America and it has been introduced in the world market (e.g. Middle East, Europe, and United States) due to its multiple nutritional benefits and antioxidant properties. The association of plants of I. paraguarensis with arbuscular mycorrhizal fungi (AMF), especially under field conditions, has been scarcely reported so far. Objective: The aim of this work was to assess the species composition, richness, spore density and diversity of Glomeromycota communities of yerba mate under different crop and natural conditions, seasonally over a 2-year period. Methods: Soil samples were extracted in winter and summer from five productive sites (situations 1-5), with contrasting crop conditions with regard to historical management, as a reference situation (situation 6). Spores were identified following morphological criteria. Results: Acaulosporaceae and Glomeraceae presented the highest spore densities in all sampling sites/ seasons/years. The lowest spore density and diversity index was recorded in 2014, when rainfall was higher than in 2013. Discussion: We reported Acaulospora capsicula detected by morphological analysis, for the first time in South America. Differences between years could be attributed to rainfall. This study contributes to the knowledge of the dynamics and factors that influence the structure of AMF communities over time. This information would be valuable to generate conservation strategies for this group of microorganisms, which are key to the sustainable development of yerba mate cultivation systems.

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Occurrence and diversity of arbuscular mycorrhizal fungi in trap cultures from El Palmar National Park soils

Cited by 15 publications

References 35 publications

Diversity and Agricultural Applications of Arbuscular Mycorrhizal Fungi in Mexico

Diversity and Agricultural Applications of Arbuscular Mycorrhizal Fungi in Mexico

The effects of arbuscular mycorrhizal fungi and essential oil on soil microbial community and N-related enzymes during the fungal early colonization phase

Diversity and abundance of arbuscular mycorrhizal fungi (Glomeromycota) associated with Ilex paraguarensis in Northeastern Argentina

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