Don't move firewood from oak wilt infected areas. First report of the oak wilt fungus, Ceratocystis fagacearum, in New York state. de Beer, Marinc., T.A. The fungal pathogen, Bretziella fagacearum (formerly Ceratocystis fagacearum), is known to occur in North America, but its origin is currently unknown. Duong & M.J. Wingf. Check the DNR website for an up-to-date oak wilt disease map. Oak wilt is a serious and often deadly vascular disease of oaks. Oak wilt is an aggressive, tree-killing disease of oaks. Over the years, and with variable frequency, it has been reported from the majority of the 88 Ohio counties. 2 Hosts Oaks can be organized taxonomically into three . the disease. It affects oaks in a manner similar to how dutch elm disease affects elms. National Forest Damage Agent Range Maps. The model related oak wilt occurrence data Distribution Maps Species Information Tools & Training My EDDMapS About oak wilt Bretziella fagacearum (Bretz) Z.W. They are intended to display the biological extent of major damage agents, or the range over which they have been a managerial concern. Department of Natural Resources - (Bretziella fagacearum) Oak wilt kills healthy red oaks. Oak wilt covers a large area in Minnesota and affects all species of oak trees. Plant Disease, 93(4), 428. doi: 10.1094/PDIS-93-4-0428B Distribution References The fungus enters the water-conducting vessels of the sapwood through fresh wounds or through roots connecting healthy and diseased trees. To manage oak wilt Don't prune oaks from April through July to prevent spread by insects. The current known distribution of oak wilt is shown in red in figure 1. Oak wilt is fatal for all the species in the red oak group; those oaks with pointy-tipped leaves. The … Figure 1.—In 2010, oak wilt was distributed over much of the Eastern United States. Look for red oaks that suddenly drop their leaves in the summer. Oak wilt can be recognized by rapid wilting and loss of leaves beginning at the top of the tree. White oaks can also be affected but are more resistant and less vulnerable to mortality from the disease. The pathogen is distributed throughout the Midwest and Texas. Stop below-ground spread by cutting root connections. Oak wilt is an infectious disease caused by the fungus Ceratocystis fagacearum. This fungus invades and colonizes the water conducting tissues of Oak trees. The maps are an integration of various sources, reviewed by regional authorities. This species is Introduced in the United States. The white oak group is less vulnerable; those oaks with round-tipped leaves. This study used Maxent, a presence-only species distribution model (SDM), to map the potential probability distribution of the invasive forest pathogen oak wilt (Ceratocystis fagacearum) in eastern and southeastern Minnesota. States Counties Points List Species Info. 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