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| DOI: | 10.1111/ppa.12127 |
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| Web URL(s): | http://onlinelibrary.wiley.com/enhanced/doi/10.1111/ppa.12127/
Last checked: 05/21/2014
Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/ppa.12127/pdf
Last checked: 05/21/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Li, Y.;
Uddin, W.;
Kaminski, J. E. |
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| Author Affiliation: | Li and Uddin: Department of Plant Pathology and Environmental Microbiology; Kaminiski: Department of Plant Science, The Pennsylvania State University, University Park, PA |
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| Title: | Effects of relative humidity on infection, colonization and conidiation of Magnaporthe orzyae on perennial ryegrass |
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| Source: | Plant Pathology. Vol. 63, No. 3, June 2014, p. 590-597. |
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| Publishing Information: | Oxford, United Kingdom: Blackwell Scientific Publications |
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| # of Pages: | 8 |
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| Related Web URL: | http://onlinelibrary.wiley.com/doi/10.1111/ppa.12127/abstract
Last checked: 05/21/2014
Notes: Abstract only |
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| Keywords: | TIC Keywords: Disease development; Disease evaluation; Gray leaf spot; Lolium perenne; Pyricularia grisea; Relative humidity
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| Abstract/Contents: | "Grey leaf spot, caused by Magnaporthe oryzae, causes severe damage on perennial ryegrass (Lolium perenne) turf. In this study, the effects of relative humidity (RH, 88 to 100% at 28°C) on infection, colonization and conidiation of M. oryzae on perennial ryegrass were investigated in controlled humidity chambers. Results showed that the RH threshold for successful M. oryzae infection was ≥92% at 28°C. The advancement of infection on the leaf tissue was further examined with a green fluorescent protein (GFP)-tagged M. oryzae strain. No appressorium formation was found when the inoculum was incubated at RH ≤88%. Additionally, the GFP-tagged staining provided a rapid method to quantitatively compare the fungal colonization from leaf tissue at different levels of RH. The fluorescence intensity data indicated that the fungal biomass was highest at 100% RH and there was no fluorescence intensity observed at 88% RH or below. Conidiation was only observed when RH was ≥96%, with the most abundant conidiation occurring 8 days after inoculation. Reduced conidiation was associated with decreasing RH, and no conidiation occurred at RH ≤92%. This study indicates that infection and conidiation of M. oryzae on perennial ryegrass required different thresholds: 92% and 96% RH for infection and conidiation, respectively. The quantitative data from this research will assist in prediction of grey leaf spot disease outbreaks and of secondary infection of perennial ryegrass." |
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| Language: | English |
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| References: | 44 |
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| Note: | Pictures, color & b/w
Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Li, Y., W. Uddin, and J. E. Kaminski. 2014. Effects of relative humidity on infection, colonization and conidiation of Magnaporthe orzyae on perennial ryegrass. Plant Pathol. 63(3):p. 590-597. |
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| DOI: 10.1111/ppa.12127 |
| Web URL(s):
http://onlinelibrary.wiley.com/enhanced/doi/10.1111/ppa.12127/
Last checked: 05/21/2014
Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/ppa.12127/pdf
Last checked: 05/21/2014
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b2213242 |
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