La inoculación con hongos micorrízicos arbusculares (HMA) ha permitido un desarrollo y crecimiento controlado en diferentes especies; sin embargo, no se evaluado su efecto algunas especies tropicales como Swietenia mahagoni. El estudio evaluó el fotosintético de S. mahagoni producida sustratos inoculados HMA. Con diseño completamente al azar, evaluaron las combinaciones dos factores: sustr...

The rate of global deposition of Cd, Pb, and Zn has decreased over the past few decades, but heavy metals already in the soil may be mobilized by local and global changes in soil conditions and exert toxic effects on soil microorganisms. We examined in vitro effects of Cd, Pb, and Zn on critical life stages in metal-sensitive ecotypes of arbuscular mycorrhizal (AM) fungi, including spore germin...

Functional differences between the arbuscular mycorrhizal fungi Glomus intraradices Schenk and Smith and Scutellospora heterogama Nicolson and Gerdemann as they affect Persea americana Mill. growth, glomalin, and fungal sporulation were examined by varying the composition and relative density of the two fungi over a gradient of available phosphorus (P). The plant benefit provided by these mycor...

The colonization of an arbuscular mycorrhizal fungus Glomus intraradices BEG110 in the soil caused a decrease in disease severity in cucumber plants after fungal inoculation with Colletotrichum orbiculare. In order to illustrate the resistance mechanism mediated by G. intraradices BEG110, infection patterns caused by C. orbiculare in the leaves of cucumber plants and the host cellular responses...

Arbuscular mycorrhizal (AM) symbiosis is generally considered to be effective in ameliorating the plant tolerance to salt stress. Unfortunately, the comprehension of the mechanisms implicated in salinity stress alleviation by AM symbiosis is far from being complete. Thus, an experiment was performed by growing durum wheat (Triticum durum Desf.) plants under salt-stress conditions to evaluate th...

The paper reports the estab li shmcill or mycorrhi za l inrecti on or a non-mycorrhi za l Ri-T-DN A trans rormcd carrot root when co-c ultured with a su rrace sterili zcd swcd potato root scgment coloni zcd by arbusc ular mycorrhi zal (A M) rungus C. ill/rami/ices on minimal M medi um. Extensivc rungal hypha I cmergence rrom eac h cut end of the mycorrhi zal swcet potato root piece was observed...

Because of the high genetic variability of the nuclear-encoded ribosomal RNA genes within single spores of arbuscular mycorrhizal fungi (AMF, Glomeromycota), new alternative marker genes are needed to better resolve closely related taxa. Based on published nucleotide sequences of the mitochondrial large ribosomal subunit (mt-LSU), new fungal-specific primers were constructed and successfully us...