TY  - JOUR
AU  - Okello, Paul N.
AU  - Petrović, Kristina
AU  - Singh, Asheesh K.
AU  - Kontz, Brian
AU  - Mathew, Febina M.
PY  - 2020
UR  - http://fiver.ifvcns.rs/handle/123456789/1972
AB  - In 2014, 2000 plants showing root rot symptoms were collected from 200 commercial soybean (Glycine max L.) fields in South Dakota, USA. One thousand one hundred thirty fungal isolates obtained from the samples were identified as Fusarium species by morphology and sequencing of the translation elongation factor 1-alpha gene. Fifty-one percent were F. graminearum, 30.0% were F. acuminatum, 8.0% belonged to the F. oxysporum species complex, 3.4% were F. armeniacum, 2.0% were F. proliferatum, 1.6% were F. virguliforme, 1.2% belonged to the F. solani species complex, 0.4% were F. nanum (syn. F. incarnatum-equiseti species complex), 0.1% were F. bulbicola (syn. F. fujikuroi species complex) and 0.1% were F. commune. The pathogenicity of 57 isolates was evaluated on the soybean 'Asgrow 1835' under greenhouse conditions. Root rot severity was rated 14 days after inoculation on a 1-to-5 scale and expressed as relative treatment effects (RTE). Nine isolates of F. oxysporum, and one each of F. armeniacum and F. commune, caused significantly greater RTE than in the non-inoculated control. Twenty-one accessions were screened for resistance in the greenhouse using one isolate each of F. graminearum, F. proliferatum and F. sporotrichioides. Accession PI361090 was less susceptible to F. graminearum and F. proliferatum than the susceptible controls, 'Williams 82' and 'Asgrow 1835'. All accessions were more susceptible to F. sporotrichioides. These findings suggest that 11 Fusarium species or species complexes are pathogenic to soybean in South Dakota, and PI361090 may be a useful source of resistance to F. graminearum and F. proliferatum.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Canadian Journal of Plant Pathology
T1  - Characterization of species of Fusarium causing root rot of Soybean (Glycine max L.) in South Dakota, USA
EP  - 571
IS  - 4
SP  - 560
VL  - 42
DO  - 10.1080/07060661.2020.1746695
ER  - 

@article{
author = "Okello, Paul N. and Petrović, Kristina and Singh, Asheesh K. and Kontz, Brian and Mathew, Febina M.",
year = "2020",
abstract = "In 2014, 2000 plants showing root rot symptoms were collected from 200 commercial soybean (Glycine max L.) fields in South Dakota, USA. One thousand one hundred thirty fungal isolates obtained from the samples were identified as Fusarium species by morphology and sequencing of the translation elongation factor 1-alpha gene. Fifty-one percent were F. graminearum, 30.0% were F. acuminatum, 8.0% belonged to the F. oxysporum species complex, 3.4% were F. armeniacum, 2.0% were F. proliferatum, 1.6% were F. virguliforme, 1.2% belonged to the F. solani species complex, 0.4% were F. nanum (syn. F. incarnatum-equiseti species complex), 0.1% were F. bulbicola (syn. F. fujikuroi species complex) and 0.1% were F. commune. The pathogenicity of 57 isolates was evaluated on the soybean 'Asgrow 1835' under greenhouse conditions. Root rot severity was rated 14 days after inoculation on a 1-to-5 scale and expressed as relative treatment effects (RTE). Nine isolates of F. oxysporum, and one each of F. armeniacum and F. commune, caused significantly greater RTE than in the non-inoculated control. Twenty-one accessions were screened for resistance in the greenhouse using one isolate each of F. graminearum, F. proliferatum and F. sporotrichioides. Accession PI361090 was less susceptible to F. graminearum and F. proliferatum than the susceptible controls, 'Williams 82' and 'Asgrow 1835'. All accessions were more susceptible to F. sporotrichioides. These findings suggest that 11 Fusarium species or species complexes are pathogenic to soybean in South Dakota, and PI361090 may be a useful source of resistance to F. graminearum and F. proliferatum.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Canadian Journal of Plant Pathology",
title = "Characterization of species of Fusarium causing root rot of Soybean (Glycine max L.) in South Dakota, USA",
pages = "571-560",
number = "4",
volume = "42",
doi = "10.1080/07060661.2020.1746695"
}

Okello, P. N., Petrović, K., Singh, A. K., Kontz, B.,& Mathew, F. M.. (2020). Characterization of species of Fusarium causing root rot of Soybean (Glycine max L.) in South Dakota, USA. in Canadian Journal of Plant Pathology
Taylor & Francis Inc, Philadelphia., 42(4), 560-571.
https://doi.org/10.1080/07060661.2020.1746695

Okello PN, Petrović K, Singh AK, Kontz B, Mathew FM. Characterization of species of Fusarium causing root rot of Soybean (Glycine max L.) in South Dakota, USA. in Canadian Journal of Plant Pathology. 2020;42(4):560-571.
doi:10.1080/07060661.2020.1746695 .

Okello, Paul N., Petrović, Kristina, Singh, Asheesh K., Kontz, Brian, Mathew, Febina M., "Characterization of species of Fusarium causing root rot of Soybean (Glycine max L.) in South Dakota, USA" in Canadian Journal of Plant Pathology, 42, no. 4 (2020):560-571,
https://doi.org/10.1080/07060661.2020.1746695 . .

TY  - JOUR
AU  - Okello, Paul N.
AU  - Petrović, Kristina
AU  - Kontz, Brian
AU  - Ali, Shaukat
AU  - Marek, Laura F.
AU  - Mathew, Febina M.
PY  - 2018
UR  - http://fiver.ifvcns.rs/handle/123456789/1756
AB  - Brassica carinata is an emerging oilseed crop in the United States, and root diseases caused by Fusarium have the potential to cause yield losses in production. In this study, B. carinata plants were randomly sampled at vegetative and seed development plant stages from South Dakota State University experimental plots. Reddish-brown lesions were observed on roots of sampled plants from which F. acuminatum, F. oxysporum, F. solani, and F. sporotrichioides were recovered. The Fusarium species were identified based on morphology and phylogenetic analyses of the translation elongation factor 1-alpha gene region. Pathogenicity of the four Fusarium species was evaluated on five B. carinata accessions using a modified inoculum layer method in the greenhouse. At 21 days after inoculation, root rot severity caused by Fusarium on the B. carinata accessions was assessed on a rating scale of 0 to 4 and evaluated using relative treatment effects (RTEs). The F. oxysporum isolate caused significant differences in RTE (P = 0.01) among the B. carinata accessions. However, there were no significant differences in RTE among the B. carinata accessions in response to F. acuminatum (P = 0.82), F. solani (P = 0.76), and F. sporotrichioides (P = 0.47) isolates.
PB  - Amer Phytopathological Soc, St Paul
T2  - Plant Health Progress
T1  - Root Rot Caused by Species of Fusarium on Brassica carinata in South Dakota
EP  - 192
IS  - 3
SP  - 188
VL  - 19
DO  - 10.1094/PHP-04-18-0012-RS
ER  - 

@article{
author = "Okello, Paul N. and Petrović, Kristina and Kontz, Brian and Ali, Shaukat and Marek, Laura F. and Mathew, Febina M.",
year = "2018",
abstract = "Brassica carinata is an emerging oilseed crop in the United States, and root diseases caused by Fusarium have the potential to cause yield losses in production. In this study, B. carinata plants were randomly sampled at vegetative and seed development plant stages from South Dakota State University experimental plots. Reddish-brown lesions were observed on roots of sampled plants from which F. acuminatum, F. oxysporum, F. solani, and F. sporotrichioides were recovered. The Fusarium species were identified based on morphology and phylogenetic analyses of the translation elongation factor 1-alpha gene region. Pathogenicity of the four Fusarium species was evaluated on five B. carinata accessions using a modified inoculum layer method in the greenhouse. At 21 days after inoculation, root rot severity caused by Fusarium on the B. carinata accessions was assessed on a rating scale of 0 to 4 and evaluated using relative treatment effects (RTEs). The F. oxysporum isolate caused significant differences in RTE (P = 0.01) among the B. carinata accessions. However, there were no significant differences in RTE among the B. carinata accessions in response to F. acuminatum (P = 0.82), F. solani (P = 0.76), and F. sporotrichioides (P = 0.47) isolates.",
publisher = "Amer Phytopathological Soc, St Paul",
journal = "Plant Health Progress",
title = "Root Rot Caused by Species of Fusarium on Brassica carinata in South Dakota",
pages = "192-188",
number = "3",
volume = "19",
doi = "10.1094/PHP-04-18-0012-RS"
}

Okello, P. N., Petrović, K., Kontz, B., Ali, S., Marek, L. F.,& Mathew, F. M.. (2018). Root Rot Caused by Species of Fusarium on Brassica carinata in South Dakota. in Plant Health Progress
Amer Phytopathological Soc, St Paul., 19(3), 188-192.
https://doi.org/10.1094/PHP-04-18-0012-RS

Okello PN, Petrović K, Kontz B, Ali S, Marek LF, Mathew FM. Root Rot Caused by Species of Fusarium on Brassica carinata in South Dakota. in Plant Health Progress. 2018;19(3):188-192.
doi:10.1094/PHP-04-18-0012-RS .

Okello, Paul N., Petrović, Kristina, Kontz, Brian, Ali, Shaukat, Marek, Laura F., Mathew, Febina M., "Root Rot Caused by Species of Fusarium on Brassica carinata in South Dakota" in Plant Health Progress, 19, no. 3 (2018):188-192,
https://doi.org/10.1094/PHP-04-18-0012-RS . .