scholarly journals Germination and germ tube growth of the arbuscular mycorrhizal fungi Gigaspora albida in different substrates

2001 ◽  
Vol 32 (4) ◽  
Author(s):  
Leonor C. Maia ◽  
Adriana M. Yano-Melo
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Germ Tube ◽  
Arbuscular Mycorrhizal ◽  
Tube Growth ◽  
Gigaspora Albida ◽  
Germ Tube Growth

scholarly journals NATIVE MICROBIOTA AND ARBUSCULAR MYCORRHIZAL FUNGI ON GROWTH OF Paspalum millegrana SCHRAD

2019 ◽  
Vol 32 (2) ◽  
pp. 345-353
Author(s):  
JOHNY DE JESUS MENDONÇA ◽  
LARISSA DE SOUZA GOIS ◽  
JACILENE FRANCISCA SOUZA SANTOS ◽  
TAMIRIS APARECIDA DE CARVALHO SANTOS ◽  
FRANCISCO SANDRO RODRIGUES HOLANDA ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Endophytic Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Mycorrhizal Colonization ◽  
Volume Number ◽  
The Family ◽  
Symbiotic Fungi ◽  
Shoot Mass ◽  
Gigaspora Albida

ABSTRACT Paspalum millegrana grass is a member of the family Poaceae native to the Americas, whose interaction with native symbiotic fungi has not yet been reported. The objective of this study was to evaluate the interactions between the native microorganisms and arbuscular mycorrhizal fungi in the development of P. millegrana Schrad. The experimental design was completely randomized with seven treatments (control, without AMF; native microbial inoculant; native + UFLA05 Gigaspora albida; native + UFLA351 Rhizoglomus clarum; native + UFLA372 Claroideoglomus etunicatum; native + UFLA401 Acaulospora morrowiae, and a mix of all treatments). The substrate was autoclaved sand and coconut powder at 2:1, with eight repetitions. The variables analyzed were: mycorrhizal colonization, dark septate endophytic fungi colonization, number of mycorrhizal spores, dry shoot mass, dry root mass, root length and volume, number of tiller and mycorrhizal dependence. Mycorrhizal arbuscular fungi and dark septate endophytic fungi colonized P. millegrana. The sporulation of arbuscular mycorrhizal fungi associated with P. millegrana was influenced by mycorrhizal colonization, depending on the fungus-plant interaction. P. millegrana was responsive to native + UFLA05 and native + UFLA351. No correlation between tiller emergence and mycorrhizal colonization of P. millegrana was observed.

scholarly journals Arbuscular mycorrhizal fungi and indolebutyric acid alter rooting rate and physiological characteristics of Lantana camara L. (Verbenaceae)?

Hoehnea ◽  
2018 ◽  
Vol 45 (4) ◽  
pp. 541-546
Author(s):  
Virton Rodrigo Targino de Oliveira ◽  
Mônica Danielle Sales da Silva Fernandes ◽  
Cynthia Cavalcanti de Albuquerque ◽  
Francisco Fábio Mesquita Oliveira
Keyword(s):  
Experimental Design ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Lantana Camara ◽  
Physiological Characteristics ◽  
Indolebutyric Acid ◽  
Gigaspora Albida ◽  
Physiological Characters

ABSTRACT The objective of this study was to evaluate the rooting and some physiological characteristics of Lantana camara L. (Verbenaceae) stakes in different concentrations of indolebutyric acid (IBA) and its association with the arbuscular mycorrhizal fungi (AMF) Claroideoglomus etunicatum (W.N. Becker & Gerd.) C. Walker & A. Schüssler e Gigaspora albida N.C. Schenck & G.S. Sm. The experimental design was completely randomized in a 3x3 factorial scheme with three replicates, where the first factor was the AMF and the second factor by doses of IBA (0; 1.0 and 1.5 mg .mL-1). The results showed that the presence of AMF in the substrate, as well as the IBA, isolated or in association stimulates the rooting and some physiological characters of L. camara cuttings.

Composition and seasonal variation of spore populations of arbuscular mycorrhizal fungi in dune soils on the island of Santa Catarina, Brazil

1994 ◽  
Vol 72 (3) ◽  
pp. 359-363 ◽  
Author(s):  
S. L. Stürmer ◽  
M. M. Bellei
Keyword(s):  
Seasonal Variation ◽  
Arbuscular Mycorrhizal Fungi ◽  
Species Composition ◽  
Mycorrhizal Fungi ◽  
Sand Dune ◽  
Sand Dunes ◽  
Arbuscular Mycorrhizal ◽  
Santa Catarina ◽  
Spore Abundance ◽  
Gigaspora Albida

A sand dune area in Santa Catarina, Brazil, was surveyed every 3 months to determine species composition and seasonal variation of arbuscular mycorrhizal fungi populations associated with Spartina ciliata. Spores from 12 fungal species were recovered. Overall species richness was 5.9. A plot of rank versus abundance provided an indirect measure of the structure of the fungal community and showed a linear relationship among species. A mean of 298 spores/100 g soil were extracted from sand dune samples, with Acaulospora scrobiculata forming 50.9% of the total population. The most frequently recovered species at all sampling dates were Gigaspora albida, Scutellospora weresubiae, A. scrobiculata, and one undescribed Scutellospora species. Spore abundance ranged from 0 to 69 spores/100 g soil for all species except A. scrobiculata (60–247 spores/100 g). Spore abundance of each species did not vary significantly through the season. However, several general trends were observed. The number of spores of Glomus constrictum, Glomus etunicatum, and Acaulospora sp. (No. 2) was maximal in winter, whereas that of Gigaspora albida peaked in spring. Species composition and richness of arbuscular fungi in Brazilian dunes appear to be similar to those in sand dunes along the Atlantic coast of the United States. Key words: arbuscular mycorrhizal fungi, ecology, sand dunes, spore populations, Brazil.

scholarly journals Seed exudates of Sesbania virgata (Cav.) Pers. stimulate the asymbiotic phase of the arbuscular mycorrhizal fungus Gigaspora albida Becker & Hall

Hoehnea ◽  
2019 ◽  
Vol 46 (1) ◽  
Author(s):  
Leilyane C.S. Coelho ◽  
Daiane S.B. Mignoni ◽  
Fábio S.B. Silva ◽  
Márcia R. Braga
Keyword(s):  
Secondary Metabolites ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Mycelial Growth ◽  
Arbuscular Mycorrhizal Fungus ◽  
Mycorrhizal Fungus ◽  
Arbuscular Mycorrhizal ◽  
Sesbania Virgata ◽  
Positive Effect ◽  
Gigaspora Albida

ABSTRACT Sesbania virgata is a legume used in the restoration of degraded areas and forms a symbiosis with arbuscular mycorrhizal fungi (AMF). Its seeds exude secondary metabolites that may influence the colonization by AMF. In this work, we studied the effects of seed (SE) and root exudates (RE) of S. virgata on the asymbiotic phase of Gigaspora albida. Spores of G. albida were germinated in medium supplemented with different concentrations of SE or RE. After seven days, spore germination was stimulated (46.6%) in the medium supplemented with the highest concentration of SE, while the mycelial growth was stimulated with the lowest SE concentration. In turn, RE had no effect on the fungal asymbiotic phase. We concluded that SE exert a positive effect on the asymbiotic phase of G. albida and that the different effects between SE and RE of S. virgata can be explained by their distinct content of secondary metabolites.

scholarly journals Arbuscular Mycorrhizal Fungi Increase the Phenolic Compounds Concentration in the Bark of the Stem of Libidibia Ferrea in Field Conditions

2017 ◽  
Vol 11 (1) ◽  
pp. 283-291 ◽  
Author(s):  
Emanuela Lima dos Santos ◽  
Francineyde Alves da Silva ◽  
Fábio Sérgio Barbosa da Silva
Keyword(s):  
Phenolic Compounds ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Field Conditions ◽  
Drying Process ◽  
Medicinal Properties ◽  
Metabolites Production ◽  
Gigaspora Albida

Background: Libidibia ferrea is a species particular to the caatinga presenting medicinal properties for containing bioactive compounds. The use of Arbuscular Mycorrhizal Fungi (AMF) can increase the production of biomolecules in the legume leaves; however, no light has been shed on the role of symbiosis in maximizing metabolites production in the bark of L. ferrea stem. Objective: The aim was to select AMF that are efficient at increasing the production of phenolic compounds with medicinal properties in the bark of the L. ferrea stem. Methods: The experiment was designed in randomized blocks with four inoculation treatments (plants pre-inoculated with Claroideoglomus etunicatum, with Gigaspora albida, with Acaulospora longula, and non-inoculated plants – control) with six repetitions. Thirteen months after the transplanting, the plants were pruned and the bark of the stem was collected; subsequently, this plant material was dried in a chamber. After the drying process, fractions of the bark of the stem were macerated in methanol. The extracts were further used for analyses of the biomolecules. Results: The flavonoids concentration had an increase of, respectively, 236% and 186% in relation to the control for the treatments with A. longula and C. etunicatum; plants inoculated with A. longula had an increase of 47% in total tannins concentration compared with the non-inoculated control – a benefit that the proanthocyanidins did not present. Conclusion: Applying inoculation with A. longula may be an alternative to increase the production of biomolecules of the secondary metabolism in the bark of the L. ferrea stem in field conditions.

scholarly journals Acclimatization of Tapeinochilos ananassae plantlets in association with arbuscular mycorrhizal fungi

2011 ◽  
Vol 46 (9) ◽  
pp. 1099-1104 ◽  
Author(s):  
João Ricardo Gonçalves de Oliveira ◽  
Thiago Alberto de Lima Morais ◽  
Natoniel Franklin de Melo ◽  
Adriana Mayumi Yano‑Melo
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Dry Matter ◽  
Block Design ◽  
Arbuscular Mycorrhizal ◽  
Survival Percentage ◽  
Randomized Block Design ◽  
Matter Production ◽  
Micropropagated Plants ◽  
Gigaspora Albida

The objective of this work was to assess the potential of three isolates of arbuscular mycorrhizal fungi to promote growth of micropropagated plantlets of Tapeinochilos ananassae during acclimatization. The experiment was carried out in greenhouse, in a completely randomized block design, with four inoculation treatments: non‑inoculated control and plants inoculated with Glomus etunicatum, Acaulospora longula or Gigaspora albida, with ten replicates. After 90 days, the following parameters were evaluated: survival rate, height, leaf and tiller number, leaf area, fresh and dry biomass, contents of macro‑ and micronutrients in the root and shoot, glomerospore number, and mycorrhizal colonization. The survival percentage was 100%, except for plants inoculated with G. albida (80%). The isolate G. etunicatum is more suitable for plant development, since it improves survival, growth, dry matter production, nutritional status, and vigor of T. ananassae micropropagated plants.

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