| Stewart's wilt | |
|---|---|
 The corn flea beetle is the vector of Stewart's wilt | |
| Causal agents | Pantoea stewartii |
| Hosts | maize |
| Vectors | corn flea beetle (Chaetocnema pulicaria) |
| EPPO Code | ERWIST |
Stewart's wilt is a bacterial disease of corn caused by the bacterium Pantoea stewartii. The disease is also known as bacterial wilt or bacterial leaf blight and has been shown to be quite problematic in sweet corn.[1][2] The causal organism is a facultatively anaerobic, gram-negative, rod-shaped bacterium.[3] The disease is endemic in the mid-Atlantic and Ohio River Valley regions and in the southern portion of the Corn Belt. Stewart's Wilt causes minor reductions in field corn yield, despite common occurrence, because most hybrids grown in the Midwest have adequate resistance. However, the disease can be problematic in seed production because many countries have restrictions on maize seed from areas where the Stewart's Wilt occurs.[4]
Stewart's wilt affects plants, particularly types of maize such as sweet, flint, dent, flour, and popcorn.[5] Sweet corn and popcorn cultivars are more susceptible to Stewart's wilt than field (dent) corn, but some dent corn inbreds and hybrids are susceptible. The production of virulence factors can be caused by the communication system between the bacteria known as quorum sensing.[6] Stewart's wilt causes yield reductions by decreasing the size of corn stand or by limiting its production, resulting in fewer and smaller ears of corn.[7]
- ^ Munkvold, G.P. "Corn Stewart's Disease" (PDF). Iowa State University of Science and Technology. Archived from the original (PDF) on 2 May 2012. Retrieved 2 November 2011.
- ^ Roper, Caroline (2011). "Pantoea stewartii subsp. stewartii: lessons learned from a xylem-dwelling pathogen of sweet corn". Molecular Plant Pathology. 12 (7): 628–637. doi:10.1111/j.1364-3703.2010.00698.x. PMC 6640275. PMID 21726365.
- ^ Munkvold, Gary P.; White, Donald G. (2016-01-01). Compendium of Corn Diseases, Fourth Edition. Diseases and Pests Compendium Series. The American Phytopathological Society. doi:10.1094/9780890544945. ISBN 978-0-89054-494-5.
- ^ Pataky, Jerald K.; du Toit, Lindsey J.; Freeman, Noah D. (August 2000). "Stewart's Wilt Reactions of an International Collection of Zea mays Germ Plasm Inoculated with Erwinia stewartii". Plant Disease. 84 (8): 901–906. doi:10.1094/PDIS.2000.84.8.901. ISSN 0191-2917. PMID 30832146.
- ^ Lipps, Patrick; Dorrance Anne; Mills Dennis. "Stewart's Bacterial Wilt and Leaf Blight of Corn". The Ohio State University. Archived from the original on 24 December 2001. Retrieved 2 November 2011.
- ^ Tan, Wen-Si (12 August 2014). "Pantoea sp. Isolated from Tropical Fresh Water Exhibiting N-Acyl Homoserine Lactone Production". The Scientific World Journal. 2014 (2014): 828971. doi:10.1155/2014/828971. PMC 4146356. PMID 25197715.
- ^ Hershman, D.E.; Vincelli P.; Nesmith W.C. "Stewart's Wilt of Corn". College of Agriculture, University of Kentucky. Archived from the original on 9 June 2010. Retrieved 2 November 2011.