Colonization and Spore Richness of Arbuscular Mycorrhizal Fungi in Araucaria Nursery Seedlings in Curitiba, Brazil

Araucaria or Paraná pine [Araucaria angustifolia (Bertol.) Kuntze, 1898] is an endangered timber tree species of Atlantic Forest that naturally forms symbiosis with arbuscular mycorrhizal fungi (AMF). The objective of this experiment was to evaluate AMF colonization and spore AMF richness in araucar...

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Published inInternational journal of agronomy Vol. 2018; no. 2018; pp. 1 - 6
Main Authors Vilcatoma-Medina, Carlos, Zanette, Flávio, Kaschuk, Glaciela
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Publishing Corporation 01.01.2018
Hindawi
John Wiley & Sons, Inc
Wiley
Subjects
Acaulospora
Acids
Aluminum
Araucaria angustifolia
Arbuscular mycorrhizas
Brazil
Colonization
Endangered plants
Endangered species
Experiments
fine roots
forest trees
forests
Fungi
Genera
Gigaspora
Glomus
Glycerol
Metropolitan areas
mycorrhizal fungi
Phosphorus
Plant biology
Plant species
Polyvinyl alcohol
Seedlings
Seeds
soil
Spores
Symbiosis
Brazil
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Summary:Araucaria or Paraná pine [Araucaria angustifolia (Bertol.) Kuntze, 1898] is an endangered timber tree species of Atlantic Forest that naturally forms symbiosis with arbuscular mycorrhizal fungi (AMF). The objective of this experiment was to evaluate AMF colonization and spore AMF richness in araucaria seedlings produced in nursery at the metropolitan region of Curitiba, Brazil, with the interest of identifying a taxonomical AMF group. For that, soil and fine roots of 6-month-, 1-year-, 2-year-, 3-year-, and 5-year-old araucaria seedlings were sampled and evaluated. Evaluations indicated that araucaria seedlings were well colonized by AMF (with rates varying from almost 50 to over 85%) and produced an abundant number of mycorrhizal spores (from 344 to 676 spores per seedling). Samples contained spores of the species Acaulospora scrobiculata, Dentiscutata heterogama, and Glomus spinuliferum and unidentified species of genera Gigaspora and Glomus. The Glomus genus was the most abundant kind of AMF spores found under nursery conditions. Therefore, the experiment evidenced that Glomus is a promising genus candidate for being used as AMF inoculant in production of araucaria seedlings.
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ISSN:1687-8159
1687-8167
1687-8167
DOI:10.1155/2018/5294295