Mycobiology.  2018 Jun;46(2):147-153. 10.1080/12298093.2018.1475370.

Aspergillus terreus JF27 Promotes the Growth of Tomato Plants and Induces Resistance against Pseudomonas syringae pv. tomato

Affiliations
  • 1Division of Agricultural Microbiology, National Institute of Agricultural Science, Rural Development Administration, Wanju, Republic of Korea. mksang@korea.kr
  • 2Department of Agriculture, Biotechnology and Natural Resources, Gyeongsang National University, Jinju, Republic of Korea.

Abstract

Certain beneficial microorganisms isolated from rhizosphere soil promote plant growth and induce resistance to a wide variety of plant pathogens. We obtained 49 fungal isolates from the rhizosphere soil of paprika plants, and selected 18 of these isolates that did not inhibit tomato seed germination for further investigation. Based on a seed germination assay, we selected four isolates for further plant tests. Treatment of seeds with isolate JF27 promoted plant growth in pot tests, and suppressed bacterial speck disease caused by Pseudomonas syringae pathovar (pv.) tomato DC3000. Furthermore, expression of the pathogenesis-related 1 (PR1) gene was higher in the leaves of tomato plants grown from seeds treated with JF27; expression remained at a consistently higher level than in the control plants for 12"‰h after pathogen infection. The phylogenetic analysis of a partial internal transcribed spacer sequence and the β-tubulin gene identified isolate JF27 as Aspergillus terreus. Taken together, these results suggest that A. terreus JF27 has potential as a growth promoter and could be used to control bacterial speck disease by inducing resistance in tomato plants.

Keyword

Plant growth-promoting fungi; induced resistance; Aspergillus terreus

MeSH Terms

Aspergillus*
Capsicum
Germination
Lycopersicon esculentum*
Plants
Pseudomonas syringae*
Pseudomonas*
Rhizosphere
Soil
Soil
Full Text Links
  • MB
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2024 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr