[IUFRO RG 7.02 FORPATH] FW: Pitch-Loblolly Pine needle disease

Dear colleagues, Please see message below from our clinician. If you have an answer, please respond directly to Nancy Taylor (taylor.8@osu.edu<mailto:taylor.8@osu.edu>) with a copy to me. Thanks! Enrico Pierluigi (Enrico) Bonello, Professor Dept. of Plant Pathology The Ohio State University 201 Kottman Hall 2021 Coffey Road Columbus, OH 43210 Tel: (614) 688-5401 Lab: (614) 688-5409 Fax: (614) 292-4455 http://plantpath.osu.edu/people-and-programs/faculty-directory/bonello-pier… Environmental Science Graduate Program (ESGP) http://esgp.osu.edu/ From: nancy <taylor.8@osu.edu<mailto:taylor.8@osu.edu>> Date: Mon, 5 Mar 2012 14:28:44 -0500 To: Enrico Bonello <bonello.2@osu.edu<mailto:bonello.2@osu.edu>> Subject: Pitch-Loblolly Pine needle disease Enrico, would you post this question to the forest path list? I received a sample of pitch-loblolly pine (Pinus rigida x taeda) which was planted last spring, plants are about 12-15 inches tall. It appears to have a needle disease, either a spot or maybe a needlecast. My first thought upon seeing the sample was a rust, but microscopic appearance does not seem right to me. The spots are bright yellow-orange around an apparently acervular fruiting body. I do not recognize this fungus and am not finding it in my usual conifer references. In some of my slides I saw some spermatia-like spores but this is definitely not a pycnidium and so not Phyllosticta. The rounder spores are somewhat variable in size. Has anyone from the areas where pitch and loblolly pines are native seen this? Nancy J. Taylor, Director C. Wayne Ellett Plant and Pest Diagnostic Clinic Ohio State University 8995 E. Main St., Bldg 23 Reynoldsburg, OH 43068-3399 Phone: (614) 403-1640 FAX: (614) 466-9754 Email: taylor.8@osu.edu<mailto:taylor.8@osu.edu> http://ppdc.osu.edu <http://ppdc.osu.edu/> -- BEGIN-ANTISPAM-VOTING-LINKS ------------------------------------------------------ Teach CanIt if this mail (ID 1346601296) is spam: Spam: https://antispam.osu.edu/b.php?i=1346601296&m=c9d93f5c11c2&c=s Not spam: https://antispam.osu.edu/b.php?i=1346601296&m=c9d93f5c11c2&c=n Forget vote: https://antispam.osu.edu/b.php?i=1346601296&m=c9d93f5c11c2&c=f ------------------------------------------------------ END-ANTISPAM-VOTING-LINKS