Host Effect on the Genetic Variability of Citrus exocortis viroid (CEVd)
نویسندگان
چکیده
منابع مشابه
Host-directed processing of Citrus exocortis viroid.
Prolonged infection of tomato hybrid (Lycopersicon esculentum x Lycopersicon peruvianum) by Citrus exocortis viroid (CEVd) resulted in viroid-like enlarged structures, detected by gel electrophoresis. This population included two new enlarged variants or D-variants, D-87 and D-76, and three transient species or D-forms, D-38, D-40 and D-43. Sequence analyses exposed a locus near the terminal re...
متن کاملEffect of citrus hosts on the generation , maintenance and 1 evolutionary fate of genetic variability of Citrus exocortis 2 viroid ( CEVd )
22 23 2 SUMMARY 23 Citrus exocortis viroid (CEVd) populations are composed by closely related 24 haplotypes whose frequencies in the population result from the equilibrium 25 between mutation, selection and genetic drift. The genetic diversity of CEVd 26 populations infecting different citrus hosts was studied by comparing 27 populations recovered from infected trifoliate orange and sour orange...
متن کاملNovel variants of citrus exocortis viroid from southern of Iran
Background and Aims: Citrus exocortis disease is naturally limited to citrus plants and causes a serious disease on sensitive rootstocks such as trifoliate orange. The aim of this study was to sample new variants of citrus exocortis viroid from Fars trees with yellowing and suberization symptoms and comparison with other isolates of this viroid. Materials and Methods: A number of symptomat...
متن کاملogenicity, viroid evolution, Citrus exocortis viroid, Potato spindle tuber viroid, Peach latent mosaic viroid, Chrysan- themum chlorotic mottle viroid
Viroids are autonomously replicating, small singlestranded circular RNA molecules that do not code for proteins and may cause disease in infected, susceptible plants. Viroids have the ability to induce both RNA-mediated transcriptional gene silencing (TGS) and posttranscriptional gene silencing (PTGS) in infected plants. Viroid PTGS has also been demonstrated in a wheat germ extract system. A p...
متن کاملIsolates of citrus exocortis viroid recovered by host and tissue selection.
Isolates of citrus exocortis viroid (CEV) from a single sweet orange citrus source have been selected by sequential passage through the alternative hosts citron, Gynura aurantiaca, a hybrid tomato Lycopersicon esculentum x L. peruvianum, and from disorganized callus culture of the hybrid tomato. The distinctions in symptom expression, titre and electrophoretic mobility among the CEV isolates, o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Organization of Citrus Virologists Conference Proceedings (1957-2010)
سال: 2005
ISSN: 0074-7203,2313-5123
DOI: 10.5070/c582q3068t