scholarly journals Diversity of vam in soils used to cultivate sugarcane (Saccharum spp.) in Tabasco, Mexico

2021 ◽  
Author(s):  
Mepivoseth Castelán-Estrada ◽  
Emeterio Payró de la Cruz ◽  
Guadalupe De los Santos-López ◽  
Samuel Córdova-Sánchez ◽  
Juan F. Gómez-Leyva ◽  
...  
Keyword(s):  
Mycorrhizal Fungi ◽  
Exploratory Study ◽  
Design Methodology ◽  
Root Colonization ◽  
Arbuscular Mycorrhizal ◽  
Saccharum Officinarum ◽  
Root Diameter ◽  
Saccharum Spp ◽  
Vesicular Arbuscular ◽  
Santa Rosalia

E Objective: A study was carried out in the Ingenio Santa Rosalía sugar mill supply area with the aim of identifying the soil subunits cultivated with sugar cane and to quantify the degree of mycorrhization of Saccharum officinarum. Design/Methodology/Approach: Rhizosphere samples were collected at a depth of 0-30 cm and root segments with diameters of ≤ 1 mm and 1-2.0 mm were studied. The intersect method and the fungal structures method were comparatively analyzed to determine the mycotrophic state of the roots. The study also quantified the number of spores in the soils and classified the morpho-species of vesicular-arbuscular mycorrhiza (VAM). Results: The results show that seven soil subunits exist in the area, but the intersect method did not detect differences in colonization by root diameter or by root colonization ( = 68.5%). For its part, the fungal structures method showed differences in colonization between soil subunits ( = 69.5%), being higher in thin roots, and statistical differences wer found for vesicles and spores. At the sites, an average of 696 spores was quantified per 100 g of soil, which indicates a high presence of vesicular-arbuscular mycorrhizal fungi in the study area. Finally, six species of mycorrhizae were identified, of which four are present in various soil subunits: Glomus aff. deserticola, Glomus etunicatum, Glomus viscosum, and Paraglomus occultum. Study Limitations/Implications: This was an exploratory study that indicates the potential of VAM. Findings/Conclusions: The presence of hyphae, vesicles, arbuscules, and spores indicates that there is an active mycotrophic process between VAM and sugarcane cultivation in the soils of the study area.

Vesicular–arbuscular mycorrhizal fungi associated with native tall grass prairie and cultivated winter wheat

1983 ◽  
Vol 61 (8) ◽  
pp. 2140-2146 ◽  
Author(s):  
B. A. Daniels Hetrick ◽  
J. Bloom
Keyword(s):  
Winter Wheat ◽  
Mycorrhizal Fungi ◽  
Root Colonization ◽  
Fungal Spores ◽  
Arbuscular Mycorrhizal ◽  
Growing Season ◽  
Fungal Species ◽  
Tall Grass ◽  
Wheat Field ◽  
Vesicular Arbuscular

More vesicular–arbuscular mycorrhizal (VAM) fungal species and significantly more fungal spores were recovered from undisturbed prairie soils than four winter wheat field soils in Kansas through the 1980–1981 growing season. Two previously undescribed sporocarpic species of Endogonaceae were found in prairie samples but have not been successfully established in pot culture, leaving the genus to which they belong unclear. Though variable, 11–50% VAM root colonization was evident in all prairie grass roots sampled throughout the year. In contrast, no identifiable VAM root colonization was evident in wheat until May after flowering when 27% root colonization was observed. During the 1981–1982 growing season, roots of two other wheat fields were sampled with similar results. No colonization occurred until May when 8% root colonization was evident. The possible influence of such low levels of root colonization occurring quite late in the growing season of winter wheat is discussed.

A comparison of spatial heterogeneity of vesicular–arbuscular mycorrhizal fungi in two maple-forest soils

1993 ◽  
Vol 71 (11) ◽  
pp. 1472-1480 ◽  
Author(s):  
John N. Klironomos ◽  
Peter Moutoglis ◽  
Bryce Kendrick ◽  
Paul Widden
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Sugar Maple ◽  
Root Colonization ◽  
Arbuscular Mycorrhizal ◽  
Vesicular Arbuscular Mycorrhizal Fungi ◽  
Total Length ◽  
External Hyphae ◽  
Vesicular Arbuscular ◽  
Spore Densities

The variations in the numbers of propagules and in the colonization rates of vesicular–arbuscular mycorrhizal fungi in soils of two sugar maple forests, one near Waterloo in southern Ontario, the other near Lacolle in southern Quebec, were investigated. Both forests comprised similar plant communities, and in each case the most numerous mycorrhizal spores were identified as those of Glomus macrocarpum, Glomus geosporum, and Acaulospora foveata. In both forests, root colonization and length of hyphae in soil peaked in spring and again in autumn, and spore densities were highest in autumn and gradually decreased during the rest of the year. Mean percent root colonization at Lacolle was twice as high as at Waterloo, and mean spore densities were almost 10 times higher. In contrast, average total length of hyphae in the soil was approximately 10 times higher at Waterloo than at Lacolle. Sporulation by G. macrocarpum was positively correlated with soil organic matter content, and sporulation by A. foveata was negatively correlated with increasing pH. Root colonization was not correlated with spore densities but was positively correlated with the total length of hyphae in the soil. Relationships among root colonization, production of external hyphae, and spore abundance in natural ecosystems are discussed. Key words: vesicular–arbuscular mycorrhizae, Acer saccharum, environmental influences.

Effects of different vesicular–arbuscular mycorrhizal fungi on growth of Fraxinusamericana

1983 ◽  
Vol 13 (4) ◽  
pp. 589-593 ◽  
Author(s):  
Valentin Furlan ◽  
J. André Fortin ◽  
Christian Plenchette
Keyword(s):  
Mycorrhizal Fungi ◽  
Root Colonization ◽  
Arbuscular Mycorrhizal ◽  
Dry Mass ◽  
Fungal Species ◽  
Growth Enhancement ◽  
White Ash ◽  
Vesicular Arbuscular ◽  
The Difference ◽  
Glomus Sp

White ash seedlings (Fraxinusamericana L.) were inoculated with five species of endomycorrhizal fungi. On the 2nd week after transplantation, growth of inoculated plants differed from control plants. Growth also differed between each fungal species used, but the difference decreased after 82 days of culture. Only dry mass remained higher in plants inoculated with Glomusepigaeum Daniels & Trappe, Glomus sp. No. 3, and Glomusmonosporum Gerd. & Trappe. A significant growth enhancement was obtained even with a low level of root colonization.

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