Abstract
Colletotrichum acutatum is responsible for anthracnose fruit rot, one of the most devastating diseases in strawberry. Phenolic compounds have been described as contributors to anthracnose resistance in strawberry (Fragaria x ananassa, Duch.). Six isolates of Colletotrichum acutatum and four isolates of three other Colletotrichum species, C. gloeosporioides, C. fragariae, and C. graminicola, associated with disease symptoms were investigated in this study. The potential inhibitory effect of phenolic acids (gallic acid, caffeic acid, chlorogenic acid, ferulic acid, trans-cinnamic acid, p-coumaric acid, salicylic acid), flavonoids (catechin, quercetin, naringenin), and ellagic acid, which are naturally found in strawberry, were screened against two different spore suspension concentrations of the Colletotrichum isolates at 5, 10, 50 mM in vitro. Among the phenolic acids and flavonoids tested in this study, only trans-cinnamic acid, ferulic acid, and p-coumaric acid inhibited fungal growth. The inhibitory effects were concentration-dependent but also varied with the spore suspension concentration of the isolates. The results demonstrated that trans-cinnamic acid had the greatest inhibitory effect on all Colletotrichum spp. isolates tested.
| Original language | English |
|---|---|
| Pages (from-to) | 550-556 |
| Number of pages | 7 |
| Journal | Current Microbiology |
| Volume | 75 |
| Issue number | 5 |
| DOIs | |
| State | Published - May 1 2018 |
Bibliographical note
Publisher Copyright:© 2017, Springer Science+Business Media, LLC, part of Springer Nature.
Funding
The authors would like to sincerely thank Dr. Lisa Vaillancourt, Department of Plant Pathology University of Kentucky, for providing the Colletotrichum isolates and guidance throughout this study. This is publication No. 17-11-062 of the Kentucky Agricultural Experiment Station and is published with the approval of the Director. This project was supported by the National Institute of Food and Agriculture, U.S. Department of Agriculture. Acknowledgements The authors would like to sincerely thank Dr. Lisa Vaillancourt, Department of Plant Pathology University of Kentucky, for providing the Colletotrichum isolates and guidance throughout this study. This is publication No. 17-11-062 of the Kentucky Agricultural Experiment Station and is published with the approval of the Director. This project was supported by the National Institute of Food and Agriculture, U.S. Department of Agriculture.
| Funders | Funder number |
|---|---|
| University of Kentucky Department of Plant Pathology | 17-11-062 |
| U.S. Department of Agriculture | |
| National Institute of Food and Agriculture | |
| Kentucky Agricultural Experiment Station |
ASJC Scopus subject areas
- Microbiology
- Applied Microbiology and Biotechnology