were indexed for biological properties. The results obtained from DTBIA tests showed that 20 of 119 (16.8%) tested trees were infected with CTV and 99 trees were virus free. All samples that tested positive in DTBIA were also positive in DAS-ELISA. After biological indexing, none of these 20 isolates showed any symptoms on sour orange, grapefruit, and sweet orange plants, but all isolates induced vein-clearing symptoms on Mexican lime (Citrus aurantifoli) in 9 months. Some isolates also caused leaf-cupping and chlorosis in Mexican lime. However, 15 months after initial grafting, all isolates induced mild to moderate stem-pitting on Mexican lime. In addition, young tissues, petioles, and leaf samples were collected periodically at monthly intervals for 1 year (2006) from a 25-year-old Satsuma Owari mandarin grafted on P. trifoliata in the Edremit Gulf. CTV was readily detected in tissue blots of young shoots and petioles from CTV-infected plants during the autumn, winter, and spring seasons. Similarly, the highest ELISA values were obtained in April; the lowest values were noted in September. This study showed that DTBIA is a rapid, sensitive, and reliable procedure for detecting CTV under field conditions.

ÖZET Ricinus communis, hint yağı, ‘Palma christi’(mesihin palmiyesi) veya merak ağacı olarak bilinen endüstriyel, tarım ve tıbbi alanlarda kullanılan bir bitkidir. İçinde bulunan risin ve risin alkaloidinin toksik olması sebebiyle oral, inhalasyon veya intravenöz yolla kullanımlarında zehirlenmeleri bildirilmiştir. Bu olgu sunumunda kabızlık şikayetiyle hastanemize başvuran ve takibinde Ricinus communis bitkisi maruziyeti olduğu anlaşılan ve üç günlük takip ve tedavi sonrasında sağlıklı bir şekilde ile taburcu edilen bir zehirlenme olgusu sunulmuştur. Anahtar Kelimeler: Hint yağı, intoksikasyon, bitkisel takviye