| Autor: |
Ahn E; Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, USA., Odvody G; Texas A&M AgriLife Research, Corpus Christi, TX, USA., Prom LK; USDA-ARS Southern Plains Agricultural Research Center, College Station, TX, USA., Magill C; Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX, USA. c-magill@tamu.edu. |
| Jazyk: |
angličtina |
| Zdroj: |
Scientific reports [Sci Rep] 2020 Dec 18; Vol. 10 (1), pp. 22320. Date of Electronic Publication: 2020 Dec 18. |
| DOI: |
10.1038/s41598-020-79473-x |
| Abstrakt: |
Basal leaf angle distribution was surveyed in twenty-one Johnsongrass cultivars near the end of the vegetative stage. The angles increased from the top to the bottom leaves, and compared to cultivated grain sorghums, the average angle was larger in Johnsongrass. When basal leaf angle distribution data were correlated with pathogenicity test data from excised-leaf assays for three isolates of Colletotrichum sublineola, the results showed a weak positive correlation between basal leaf angle and pathogenicity level in Johnsongrass. In order to investigate a protective role of leaf thickness to C. sublineola, leaf thickness was measured in three sorghum cultivars and one Johnsongrass cultivar at the 8-leaf-stage. Leaf thickness near the apex, near the base, and half-way between the two points were measured in the top four leaves of each plant. Thickness of leaf blade and midrib were recorded separately. Using an excised-leaf-assay, the three points were inoculated with C. sublineola, and pathogenicity level was recorded 4-days-post-inoculation. Results showed strong negative correlations between leaf midrib thickness and pathogenicity level in sorghum and Johnsongrass but not in leaf blades. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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