Purple Coneflower Is a Host of the Aster Yellows Phytoplasma
نویسندگان
چکیده
منابع مشابه
Overwintering non-crop sources of aster yellows phytoplasma
Research Overview: This project is directed at further enhancing our present understanding of the epidemiology and overwintering biology of the aster yellows phytoplasma (AYp) with a focus on factors that influence its geographical distribution in the upper Midwest and spread into Wisconsin muck crops. Our current research program focuses on: 1) generating new information about the identity, ge...
متن کاملFactors influencing aster leafhopper (Hemiptera: Cicadellidae) abundance and aster yellows phytoplasma infectivity in Wisconsin carrot fields.
In Wisconsin, vegetable crops are threatened annually by infection of the aster yellows phytoplasma (AYp), the causal agent of aster yellows (AY) disease, vectored by the aster leafhopper, Macrosteles quadrilineatus Forbes. Aster leafhopper abundance and infectivity are influenced by processes operating across different temporal and spatial scales. We applied a multilevel modeling approach to p...
متن کاملDraft genome sequence of the New Jersey aster yellows strain of ‘Candidatus Phytoplasma asteris’
The NJAY (New Jersey aster yellows) strain of 'Candidatus Phytoplasma asteris' is a significant plant pathogen responsible for causing severe lettuce yellows in the U.S. state of New Jersey. A draft genome sequence was prepared for this organism. A total of 177,847 reads were assembled into 75 contigs > 518 bp with a total base value of 652,092 and an overall [G+C] content of 27.1%. A total of ...
متن کاملPLANT-INSECT INTERACTIONS Seasonal Patterns of Aster Leafhopper (Hemiptera: Cicadellidae) Abundance and Aster Yellows Phytoplasma Infectivity in Wisconsin Carrot Fields
InWisconsin, vegetablecropsare threatenedannuallyby theasteryellowsphytoplasma (AYp), which is obligately transmitted by the aster leafhopper. Using a multiyear, multilocation data set, seasonal patterns of leafhopper abundance and infectivity weremodeled. A seasonal aster yellows index (AYI) was deduced from the model abundance and infectivity predictions to represent the expected seasonal ris...
متن کاملSecY gene sequence analysis for finer differentiation of diverse strains in the aster yellows phytoplasma group.
Aster yellows (AY) group (16SrI) phytoplasmas are associated with more than 100 economically important diseases worldwide and represent the most diverse and widespread phytoplasma group. Phylogenetic analysis of secY gene sequences resolved 10 genetically distinct lineages. The 10 lineages coincide with those delineated by phylogenetic analysis based on ribosomal protein (rp) gene sequences. Ho...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 1997
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pdis.1997.81.4.424c