Leaf angle distribution in Johnsongrass, leaf thickness in sorghum and Johnsongrass, and association with response to Colletotrichum sublineola

Abstract 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 distri...

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Autores principales:	Ezekiel Ahn, Gary Odvody, Louis K. Prom, Clint Magill
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d302c96fbd6e47498eb2ffc74fbbe945
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spelling	oai:doaj.org-article:d302c96fbd6e47498eb2ffc74fbbe9452021-12-02T13:58:11ZLeaf angle distribution in Johnsongrass, leaf thickness in sorghum and Johnsongrass, and association with response to Colletotrichum sublineola10.1038/s41598-020-79473-x2045-2322https://doaj.org/article/d302c96fbd6e47498eb2ffc74fbbe9452020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79473-xhttps://doaj.org/toc/2045-2322Abstract 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.Ezekiel AhnGary OdvodyLouis K. PromClint MagillNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-6 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ezekiel Ahn Gary Odvody Louis K. Prom Clint Magill Leaf angle distribution in Johnsongrass, leaf thickness in sorghum and Johnsongrass, and association with response to Colletotrichum sublineola
description	Abstract 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.
format	article
author	Ezekiel Ahn Gary Odvody Louis K. Prom Clint Magill
author_facet	Ezekiel Ahn Gary Odvody Louis K. Prom Clint Magill
author_sort	Ezekiel Ahn
title	Leaf angle distribution in Johnsongrass, leaf thickness in sorghum and Johnsongrass, and association with response to Colletotrichum sublineola
title_short	Leaf angle distribution in Johnsongrass, leaf thickness in sorghum and Johnsongrass, and association with response to Colletotrichum sublineola
title_full	Leaf angle distribution in Johnsongrass, leaf thickness in sorghum and Johnsongrass, and association with response to Colletotrichum sublineola
title_fullStr	Leaf angle distribution in Johnsongrass, leaf thickness in sorghum and Johnsongrass, and association with response to Colletotrichum sublineola
title_full_unstemmed	Leaf angle distribution in Johnsongrass, leaf thickness in sorghum and Johnsongrass, and association with response to Colletotrichum sublineola
title_sort	leaf angle distribution in johnsongrass, leaf thickness in sorghum and johnsongrass, and association with response to colletotrichum sublineola
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/d302c96fbd6e47498eb2ffc74fbbe945
work_keys_str_mv	AT ezekielahn leafangledistributioninjohnsongrassleafthicknessinsorghumandjohnsongrassandassociationwithresponsetocolletotrichumsublineola AT garyodvody leafangledistributioninjohnsongrassleafthicknessinsorghumandjohnsongrassandassociationwithresponsetocolletotrichumsublineola AT louiskprom leafangledistributioninjohnsongrassleafthicknessinsorghumandjohnsongrassandassociationwithresponsetocolletotrichumsublineola AT clintmagill leafangledistributioninjohnsongrassleafthicknessinsorghumandjohnsongrassandassociationwithresponsetocolletotrichumsublineola
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Leaf angle distribution in Johnsongrass, leaf thickness in sorghum and Johnsongrass, and association with response to Colletotrichum sublineola

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