A new fungal endophyte, Scolecobasidium humicola, promotes tomato growth under organic nitrogen conditions

A new fungal endophyte, Scolecobasidium humicola, was identified as a common dark septate endophytic fungal (DSE) species under both natural and agricultural conditions. This fungus was found to grow endophylically in the roots of tomato seedlings. Light microscopy of cross-sections of colonized tom...

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Bibliographic Details
Published in:PloS one 2013-11, Vol.8 (11), p.e78746
Main Authors: Mahmoud, Rola S, Narisawa, Kazuhiko
Format: Article
Language:English
Subjects:
Agriculture
Amino Acids - pharmacology
Ascomycota - physiology
Biomass
Brassica oleracea
Chaetospira
Ecosystems
Endophytes
Endophytes - physiology
Farming
Flowers & plants
Fungi
Genetic aspects
Growth (Plants)
Host-Pathogen Interactions - drug effects
Humicola
Hyphae
Hyphae - physiology
Laboratories
Leucine - pharmacology
Light microscopy
Nitrogen
Nitrogen sources
Organic farming
Organic nitrogen
Phenylalanine - pharmacology
Physiological aspects
Pinus contorta
Plant biomass
Plant Epidermis - drug effects
Plant Epidermis - growth & development
Plant Epidermis - microbiology
Plant growth
Plant Roots - drug effects
Plant Roots - growth & development
Plant Roots - microbiology
Polyvinyl alcohol
Roots
Seedlings
Seedlings - drug effects
Seedlings - growth & development
Seedlings - microbiology
Seeds
Solanum lycopersicum - drug effects
Solanum lycopersicum - growth & development
Solanum lycopersicum - microbiology
Symbiosis - drug effects
Tomatoes
Valine - pharmacology
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Summary:A new fungal endophyte, Scolecobasidium humicola, was identified as a common dark septate endophytic fungal (DSE) species under both natural and agricultural conditions. This fungus was found to grow endophylically in the roots of tomato seedlings. Light microscopy of cross-sections of colonized tomato roots showed that the intercellular, pigmented hyphae of the fungus were mostly limited to the epidermal layer and formed outer mantle-like structures. Two isolates of S. humicola, H2-2 and F1-3, have shown the ability to increase plant biomass with an organic nitrogen source. This finding is the first report of S. humicola as an endophyte and could help to improve plant growth with organic nitrogen sources.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0078746