Arbuscular mycorrhizal fungi in Mimosa tenuiflora (Willd.) Poir from Brazilian semi-arid

Abstract

Many plant species from Brazilian semi-arid present arbuscular mycorrhizal fungi (AMF) in their rhizosphere. These microorganisms play a key role in the establishment, growth, survival of plants and protection against drought, pathogenic fungi and nematodes. This study presents a quantitative analysis of the AMF species associated with Mimosa tenuiflora, an important native plant of the Caatinga flora. AMF diversity, spore abundance and root colonization were estimated in seven sampling locations in the Ceará and Paraíba States, during September of 2012. There were significant differences in soil properties, spore abundance, percentage of root colonization, and AMF diversity among sites. Altogether, 18 AMF species were identified, and spores of the genera Acaulospora, Claroideoglomus, Dentiscutata, Entrophospora, Funneliformis, Gigaspora, Glomus, Racocetra, Rhizoglomus and Scutellospora were observed. AMF species diversity and their spore abundance found in M. tenuiflora rhizosphere shown that this native plant species is an important host plant to AMF communities from Brazilian semi-arid region. We concluded that: (a) during the dry period and in semi-arid conditions, there is a high spore production in M. tenuiflora root zone; and (b) soil properties, as soil pH and available phosphorous, affect AMF species diversity, thus constituting key factors for the similarity/dissimilarity of AMF communities in the M. tenuiflora root zone among sites.

Plant-soil feedback of two legume species in semi-arid Brazil

“…We found that the Order Diversisporales were positively correlated with the rhizosphere of M. tenuiflora in all studied sites, whereas the Order Glomerales and Funneliformis mosseae were positively correlated with the rhizosphere of P. juliflora. These results agree with the work done by Zhang et al [11], Souza et al [13], and El-Keblawy and Al-Rawai [15] that reported high abundance of AMF species from Order Diversisporales in native plant species and F. mosseae as a dominant AMF species in the rhizosphere of P. juliflora. P. juliflora promoted AMF species from Glomerales order like genera Funneliformis (F. mosseae) and Rhizoglomus (Rhizoglomus clarum), while the same genera of the Diversisporales order were absent (Acaulospora and Gigaspora) or had their frequency decreased (Quatunica, Dentiscutata, and Scutellospora) in the modified AMF community.…”

“…On the other hand, M. tenuiflora promoted all AMF species from both Diversisporales and Glomerales order, without any dominant AMF species within these orders. In the field conditions, where there was a well-preserved natural ecosystem with a native AMF community under influence of several native plant species, such as M. tenuiflora, the resistance to invasion can be promoted [13]. This is an important result for biodiversity and conservation of native flora of Brazilian semi-arid region.…”

“…Changes in soil chemical properties may have direct impacts on AMF community composition, where a native AMF community (e.g., AMF community that occurs in the root zone of native plant species) that evolved during many years in a native root zone and was adapted to natural conditions like low fertility, become a modified AMF community that has all its community structure altered in benefit of the invader and adapted to the new soil conditions like pH and P availability. There are many works that demonstrate changes in AMF communities during exotic plant invasion [5,[10][11][12][13], but the mechanisms underlying these changes and their consequences on host's growth have not been well elucidated. Biological invasion is recognized as one of the most important ecological disturbances affecting the dynamics of plant communities in the Brazilian semi-arid region [14].…”

Symbiotic interaction in forage crop cultivations: A review

“…Tree size species are crucial to the consolidation of system agrosilvipastoral because they beget several benefits. Souza et al (2016), working with tree species from the Caatinga, observed that black jurema (Mimosa tenuiflora (Willd.) Poiret) possesses high interaction with mycorrhizal fungi that aids on nutrients cycling.…”

The Applied Use of Next Generation DNA Sequencing for Infectious Disease

“…F. mosseae exhibits significant genetic diversity and was formerly named Glomus mosseae. (33,34). This fungi was the only microbe detected in all three cases of coronary plaque (16,19), and was a common finding in CFS patients and in some normal control patients [ …”