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Stanley Freeman

., 1992 ). Mother plants affected by anthracnose may collapse entirely due to crown rot. Root necrosis incited by C. acutatum may also stunt plants ( Freeman and Katan, 1997 ). Infected transplants can spread the disease from the nursery to the field

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Charles S. Krasnow and Mary K. Hausbeck

Pythium root rot causes significant losses in ornamental greenhouse production in Michigan, an industry worth an estimated $393 million ( U.S. Department of Agriculture, 2014 ). Pythium species infect roots and root hairs of ornamental plants

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Stephen R. King, Angela R. Davis, Wenge Liu, and Amnon Levi

resistance to P . capsici ; it was apparent that the grafted plants were able to tolerate the fungus better than the nongrafted plants. Improved control of black root rot ( Phomopsis sclerotioides Kesteren) in melon and cucumber has been demonstrated in

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Alexis K. Nagel, Guido Schnabel, Cesar Petri, and Ralph Scorza

agent of Armillaria root rot and a closely related species to GAFP's target pathogen, A. mellea . Multiyear field tests are necessary to investigate this transgenic system under infection conditions. Literature Cited Barker, K

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David R. Bryla, Robert G. Linderman, and Wei Q. Yang

importance as potential pathogens in blueberry. Literature Cited Brannen, P.M. and S. NeSmith. 2006. Fungicidal control of Pythium root rot of blueberry in high-density bark bed planting, 2005. F & N Tests 61:SMF016. Caruso, F

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Stephen H. Futch, James H. Graham, and Larry W. Duncan

unknown), foot rot ( Phytophthora nicotianae ), insects, root weevils ( Artipus floridanus, Asynonychus godmani, Pachnaeus opalus, Pachnaeus litus and Diaprepes abbreviatus ) ( Tucker, 2006 ), nematodes, and various environmental abiotic factors

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Jun Tang, Kang-Di Hu, Lan-Ying Hu, Yan-Hong Li, Yong-Sheng Liu, and Hua Zhang

sweetpotato showing soft rot and black rot lesions and cultured on agar rose bengal medium at 28 °C in the dark. Spore suspensions were prepared by flooding 6-d-old sporulating cultures with sterile distilled water. The spore concentrations of the pathogen

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E. Vanessa Campoverde, Georgina Sanahuja, and Aaron J. Palmateer

the most common and damaging pathogens associated with ornamental plant production in Florida ( Patel et al., 2016 ). There has been an increase of 6.9% of positive samples for Phytophthora stem and root rot during the wet “dry” season compared with

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Elisabeth M. Meyer, Thomas G. Ranney, Thomas A. Eaker, and Kelly Ivors

temperatures as low as –38 °C ( Dirr, 1998 ). Despite these appealing features, Franklinia remains a rarity in the landscape as a result of its susceptibility to root and crown rots caused by pathogens, including P. cinnamomi ( Koslow and Peterson, 1980

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Natalia Salinas, Zhen Fan, Natalia Peres, Seonghee Lee, and Vance M. Whitaker

high levels of resistance to the fruit form of anthracnose; however, it was unknown how effective the locus FaRCa1 was against the root form of the disease. Specific interactions between different organs of strawberry and the pathogen can result in