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| Content Provider | Springer Nature Link |
|---|---|
| Author | Deka Bhuyan, P. Chutia, M. Pathak, M. G. Baruah, P. |
| Copyright Year | 2010 |
| Abstract | Sheath blight and brown spot disease of rice caused by Rhizoctonia solani and Bipolaris oryzae causes significant yield loss in rice production worldwide. The present study was undertaken to examine the effect of two essential oils (EOs) from Lippia geminata and Cymbopogon jwarancusa on in vitro growth and sporulation of these two pathogens. The fungal radial growth was inhibited at very low concentration (25 ppm) of the EOs. Similarly, fungal spore production was also inhibited up to ≥80% at 500 ppm of EOs. However, fungal sporulation was completely retarded at 1,000 ppm of L. geminata EO. Very low oil concentrations (10 ppm) accelerated the radial growth (0–5 mm) and spore germination (3.5–8.5%) of the pathogens. At higher oil concentrations, the mycelial growth and spore productions were completely inhibited. The IC$_{50}$ value of the EO of C. jwarancusa was 365.45 and 336.74 ppm and for L. geminata, it was 420.16 and 481.47 ppm against B. oryzae and R. solani, respectively. GC–MS analysis of the oils showed 54.36% piperitone and 30.86% α-phellandrene as major compounds in C. jwarancusa whereas 25.9% geranial and 14.6% neral in L. geminata oil. Essential oils from Lippia geminata and Cymbopogon jwarancusa appear to be good candidates for the in vitro control of these two rice pathogens and can be successfully utilized in management strategies of pathogens in appropriate formulation. |
| Starting Page | 1333 |
| Ending Page | 1340 |
| Page Count | 8 |
| File Format | |
| ISSN | 0003021X |
| Journal | Journal of the American Oil Chemists' Society |
| Volume Number | 87 |
| Issue Number | 11 |
| e-ISSN | 15589331 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2010-06-23 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Antifungal Essential oil Fungal sporulation Rhizoctonia solani Bipolaris oryzae Biotechnology Food Science Agriculture Biomaterials Industrial Chemistry/Chemical Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Chemical Engineering |
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