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David R Horton - One of the best experts on this subject based on the ideXlab platform.
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The Weed Link in Zebra Chip Epidemiology: Suitability of Non-crop Solanaceae and Convolvulaceae to Potato Psyllid and “Candidatus Liberibacter Solanacearum”
American Journal of Potato Research, 2019Co-Authors: W. Rodney Cooper, Carrie H Wohleb, David R Horton, Eugene Miliczky, Timothy D WatersAbstract:Potato psyllid ( Bactericera cockerelli ) is a vector of “ Candidatus Liberibacter solanacearum”, the pathogen associated with potato zebra chip disease. While the psyllid apparently colonizes potato from non-crop Solanaceae or Convolvulaceae, the identity of these weed sources is uncertain. We examined susceptibility of ten non-crop species (one Convolvulaceae and nine Solanaceae) to potato psyllid and Liberibacter, with an emphasis on psyllid populations (northwestern and western haplotypes) and plant species that are present in the Pacific Northwest. Psyllids of the western haplotype survived and developed on all plant species, while psyllids of the northwestern haplotype survived on all species except Solanum physalipholium . All species except Lycium barbarum and Convolvulus arvensis were susceptible to Liberibacter. Results of our study provide the most extensive examination of plant suitability to potato psyllid and Liberibacter and will lead to improved capabilities of predicting which potato fields are at risk to arrival of infective psyllids. El psílido de la papa ( Bactericera cockerelli ) es un vector de “ Candidatus Liberibacter solanacearum ”, el patógeno asociado con la enfermedad de la papa rayada (zebra chip). Mientras que el psílido aparentemente coloniza la papa desde especies no cultivadas de Solanáceae o Convolvulaceae, es incierta la identidad de estas fuentes de malezas. Examinamos la susceptibilidad de diez especies no cultivadas (una Convolvulaceae y nueve Solanaceae) al psílido de la papa y a Liberibacter, con énfasis en las poblaciones del psílido (haplotipos noroccidentales y occidentales) y especies de plantas presentes en el Pacífico Noroccidental. Los psílidos del haplotipo del occidente sobrevivieron y se desarrollaron en todas las especies vegetales, mientras que los del haplotipo del noroccidente sobrevivieron en todas las especies excepto en Solanum physalipholium. Todas las especies, excepto Lycium barbarum y Convolvulus arvensis, fueron susceptibles a Liberibcter . Los resultados de nuestro estudio proporcionan el examen más extensivo de la susceptibilidad de las plantas al psílido de la papa y a Liberibacter y conducirá hacia capacidades mejoradas en la predicción de qué campos de papa estan en riesgo del arribo de psílidos infectivos.
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the weed link in zebra chip epidemiology suitability of non crop solanaceae and Convolvulaceae to potato psyllid and candidatus liberibacter solanacearum
American Journal of Potato Research, 2019Co-Authors: Rodney W Cooper, Carrie H Wohleb, David R Horton, Eugene Miliczky, Timothy D WatersAbstract:Potato psyllid (Bactericera cockerelli) is a vector of “Candidatus Liberibacter solanacearum”, the pathogen associated with potato zebra chip disease. While the psyllid apparently colonizes potato from non-crop Solanaceae or Convolvulaceae, the identity of these weed sources is uncertain. We examined susceptibility of ten non-crop species (one Convolvulaceae and nine Solanaceae) to potato psyllid and Liberibacter, with an emphasis on psyllid populations (northwestern and western haplotypes) and plant species that are present in the Pacific Northwest. Psyllids of the western haplotype survived and developed on all plant species, while psyllids of the northwestern haplotype survived on all species except Solanum physalipholium. All species except Lycium barbarum and Convolvulus arvensis were susceptible to Liberibacter. Results of our study provide the most extensive examination of plant suitability to potato psyllid and Liberibacter and will lead to improved capabilities of predicting which potato fields are at risk to arrival of infective psyllids.
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Survival and development of potato psyllid (Hemiptera: Triozidae) on Convolvulaceae: effects of a plant-fungus symbiosis (Periglandula)
PloS one, 2018Co-Authors: Navneet Kaur, W. R. Cooper, Jennifer M. Duringer, Ismael E. Badillo-vargas, Gabriela Esparza-díaz, Arash Rashed, David R HortonAbstract:Plant species in the family Solanaceae are the usual hosts of potato psyllid, Bactericera cockerelli (Sulc) (Hemiptera: Psylloidea: Triozidae). However, the psyllid has also been shown to develop on some species of Convolvulaceae (bindweeds and morning glories). Developmental success on Convolvulaceae is surprising given the rarity of psyllid species worldwide associated with this plant family. We assayed 14 species of Convolvulaceae across four genera (Convolvulus, Calystegia, Ipomoea, Turbina) to identify species that allow development of potato psyllid. Two populations of psyllids were assayed (Texas, Washington). The Texas population overlaps extensively with native Convolvulaceae, whereas Washington State is noticeably lacking in Convolvulaceae. Results of assays were overlain on a phylogenetic analysis of plant species to examine whether Convolvulaceae distantly related to the typical host (potato) were less likely to allow development than species of Convolvulaceae more closely related. Survival was independent of psyllid population and location of the plant species on our phylogenetic tree. We then examined whether presence of a fungal symbiont of Convolvulaceae (Periglandula spp.) affected psyllid survival. These fungi associate with Convolvulaceae and produce a class of mycotoxins (ergot alkaloids) that may confer protection against plant-feeding arthropods. Periglandula was found in 11 of our 14 species, including in two genera (Convolvulus, Calystegia) not previously known to host the symbiont. Of these 11 species, leaf tissues from five contained large quantities of two classes of ergot alkaloids (clavines, amides of lysergic acid) when evaluated by LC-MS/MS. All five species also harbored Periglandula. No ergot alkaloids were detected in species free of the fungal symbiont. Potato psyllid rapidly died on the five species that harbored Periglandula and contained ergot alkaloids, but survived to adulthood on seven of the nine species in which ergot alkaloids were not detected. These results support the hypothesis that a plant-fungus symbiotic relationship affects the suitability of certain Convolvulaceae to potato psyllid.
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Survival and development of potato psyllid (Hemiptera: Triozidae) on Convolvulaceae: effects of a plant-fungus symbiosis (Periglandula)
2018Co-Authors: Navneet Kaur, W. R. Cooper, Jennifer M. Duringer, Ismael E. Badillo-vargas, Gabriela Esparza-díaz, Arash Rashed, David R HortonAbstract:Plant species in the family Solanaceae are the usual hosts of potato psyllid, Bactericera cockerelli (Sulc) (Hemiptera: Psylloidea: Triozidae). However, the psyllid has also been shown to develop on some species of Convolvulaceae (bindweeds and morning glories). Developmental success on Convolvulaceae is surprising given the rarity of psyllid species worldwide associated with this plant family. We assayed 14 species of Convolvulaceae across four genera (Convolvulus, Calystegia, Ipomoea, Turbina) to identify species that allow development of potato psyllid. Two populations of psyllids were assayed (Texas, Washington). The Texas population overlaps extensively with native Convolvulaceae, whereas Washington State is noticeably lacking in Convolvulaceae. Results of assays were overlain on a phylogenetic analysis of plant species to examine whether Convolvulaceae distantly related to the typical host (potato) were less likely to allow development than species of Convolvulaceae more closely related. Survival was independent of psyllid population and location of the plant species on our phylogenetic tree. We then examined whether presence of a fungal symbiont of Convolvulaceae (Periglandula spp.) affected psyllid survival. These fungi associate with Convolvulaceae and produce a class of mycotoxins (ergot alkaloids) that may confer protection against plant-feeding arthropods. Periglandula was found in 11 of our 14 species, including in two genera (Convolvulus, Calystegia) not previously known to host the symbiont. Of these 11 species, leaf tissues from five contained large quantities of two classes of ergot alkaloids (clavines, amides of lysergic acid) when evaluated by LC-MS/MS. All five species also harbored Periglandula. No ergot alkaloids were detected in species free of the fungal symbiont. Potato psyllid rapidly died on species found to harbor Periglandula and fungus-produced alkaloids, but survived on species in which the mutualism was absent. These results support the hypothesis that a plant-fungus symbiotic relationship affects the suitability of certain Convolvulaceae to potato psyllid.
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new geographic records for the nearctic psyllid bactericera maculipennis crawford with biological notes and descriptions of the egg and fifth instar nymph hemiptera psylloidea triozidae
Proceedings of the Entomological Society of Washington, 2017Co-Authors: David R Horton, Tamera M Lewis, Rodney W Cooper, Tariq Mustafa, Jenita Thinakaran, Carrie H Wohleb, Timothy D Waters, Joseph E. Munyaneza, Eugene Miliczky, Andrew S JensenAbstract:The Nearctic psyllid Bactericera maculipennis (Crawford) (Hemiptera: Psylloidea: Triozidae) is one of only five known species of Psylloidea worldwide whose host plants include species of Convolvulaceae (Solanales). Current checklists of North American Psylloidea report B. maculipennis only from California and Utah. Our surveys of field bindweed, Convolvulus arvensis L. (Convolvulaceae), an Old World plant introduced into North America, show that B. maculipennis is considerably more widespread than indicated by historical accounts. We update the psyllid's geographic range to include four states (Washington, Idaho, Oregon, Montana) not previously included in contemporary checklists. The egg and fifth instar nymph are described. We provide characters of the egg and nymph that distinguish this species from a congeneric species, Bactericera cockerelli (Sulc), occasionally found on field bindweed. Photographs of the male and female terminalia are provided. Bactericera maculipennis developed successfully on field bindweed and on several species of Ipomoea (Convolvulaceae) in laboratory assays. Overwintering females collected from leaf litter and dead or dormant stems of C. arvensis at locations in Central Washington mated and began to oviposit within 7 days of removal from the field, suggesting that B. maculipennis overwinters in a temperature-controlled quiescence rather than in a true reproductive diapause. Eggs and nymphs of B. maculipennis were found on stems of C. arvensis well into November in Central Washington, suggesting that this psyllid also may overwinter in pre-adult stages, as indicated by literature accounts from the 1940s and 1950s. Lastly, we propose that successful colonization of the invasive and exotic weed C. arvensis by B. maculipennis has allowed the psyllid to expand its geographic range well beyond historical boundaries. This conclusion is based upon the scarcity of native Convolvulaceae within regions in which the psyllid is newly recorded, combined with the now extensive distribution of the invasive C. arvensis in North America.
Nina M Barcenas - One of the best experts on this subject based on the ideXlab platform.
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horizontal transmission of candidatus liberibacter solanacearum by bactericera cockerelli hemiptera triozidae on convolvulus and ipomoea solanales Convolvulaceae
PLOS ONE, 2015Co-Authors: Glenda L Torres, Rodney W Cooper, Joseph E. Munyaneza, David R Horton, Kylie D Swisher, Stephen F Garczynski, Nina M BarcenasAbstract:“Candidatus Liberibacter solanacearum” (Proteobacteria) is an important pathogen of solanaceous crops (Solanales: Solanaceae) in North America and New Zealand, and is the putative causal agent of zebra chip disease of potato. This phloem-limited pathogen is transmitted to potato and other solanaceous plants by the potato psyllid, Bactericera cockerelli (Hemiptera: Triozidae). While some plants in the Convolvulaceae (Solanales) are also known hosts for B. cockerelli, previous efforts to detect Liberibacter in Convolvulaceae have been unsuccessful. Moreover, studies to determine whether Liberibacter can be acquired from these plants by B. cockerelli are lacking. The goal of this study was to determine whether horizontal transmission of Liberibacter occurs among potato psyllids on two species of Convolvulaceae, sweet potato (Ipomoea batatas) and field bindweed (Convolvulus arvensis), which grows abundantly in potato growing regions of the United States. Results indicated that uninfected psyllids acquired Liberibacter from both I. batatas and C. arvensis if infected psyllids were present on plants concurrently with the uninfected psyllids. Uninfected psyllids did not acquire Liberibacter from plants if the infected psyllids were removed from the plants before the uninfected psyllids were allowed access. In contrast with previous reports, PCR did detect the presence of Liberibacter DNA in some plants. However, visible amplicons were faint and did not correspond with acquisition of the pathogen by uninfected psyllids. None of the plants exhibited disease symptoms. Results indicate that horizontal transmission of Liberibacter among potato psyllids can occur on Convolvulaceae, and that the association between Liberibacter and Convolvulaceae merits additional attention.
Navneet Kaur - One of the best experts on this subject based on the ideXlab platform.
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Survival and development of potato psyllid (Hemiptera: Triozidae) on Convolvulaceae: effects of a plant-fungus symbiosis (Periglandula)
PloS one, 2018Co-Authors: Navneet Kaur, W. R. Cooper, Jennifer M. Duringer, Ismael E. Badillo-vargas, Gabriela Esparza-díaz, Arash Rashed, David R HortonAbstract:Plant species in the family Solanaceae are the usual hosts of potato psyllid, Bactericera cockerelli (Sulc) (Hemiptera: Psylloidea: Triozidae). However, the psyllid has also been shown to develop on some species of Convolvulaceae (bindweeds and morning glories). Developmental success on Convolvulaceae is surprising given the rarity of psyllid species worldwide associated with this plant family. We assayed 14 species of Convolvulaceae across four genera (Convolvulus, Calystegia, Ipomoea, Turbina) to identify species that allow development of potato psyllid. Two populations of psyllids were assayed (Texas, Washington). The Texas population overlaps extensively with native Convolvulaceae, whereas Washington State is noticeably lacking in Convolvulaceae. Results of assays were overlain on a phylogenetic analysis of plant species to examine whether Convolvulaceae distantly related to the typical host (potato) were less likely to allow development than species of Convolvulaceae more closely related. Survival was independent of psyllid population and location of the plant species on our phylogenetic tree. We then examined whether presence of a fungal symbiont of Convolvulaceae (Periglandula spp.) affected psyllid survival. These fungi associate with Convolvulaceae and produce a class of mycotoxins (ergot alkaloids) that may confer protection against plant-feeding arthropods. Periglandula was found in 11 of our 14 species, including in two genera (Convolvulus, Calystegia) not previously known to host the symbiont. Of these 11 species, leaf tissues from five contained large quantities of two classes of ergot alkaloids (clavines, amides of lysergic acid) when evaluated by LC-MS/MS. All five species also harbored Periglandula. No ergot alkaloids were detected in species free of the fungal symbiont. Potato psyllid rapidly died on the five species that harbored Periglandula and contained ergot alkaloids, but survived to adulthood on seven of the nine species in which ergot alkaloids were not detected. These results support the hypothesis that a plant-fungus symbiotic relationship affects the suitability of certain Convolvulaceae to potato psyllid.
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Survival and development of potato psyllid (Hemiptera: Triozidae) on Convolvulaceae: effects of a plant-fungus symbiosis (Periglandula)
2018Co-Authors: Navneet Kaur, W. R. Cooper, Jennifer M. Duringer, Ismael E. Badillo-vargas, Gabriela Esparza-díaz, Arash Rashed, David R HortonAbstract:Plant species in the family Solanaceae are the usual hosts of potato psyllid, Bactericera cockerelli (Sulc) (Hemiptera: Psylloidea: Triozidae). However, the psyllid has also been shown to develop on some species of Convolvulaceae (bindweeds and morning glories). Developmental success on Convolvulaceae is surprising given the rarity of psyllid species worldwide associated with this plant family. We assayed 14 species of Convolvulaceae across four genera (Convolvulus, Calystegia, Ipomoea, Turbina) to identify species that allow development of potato psyllid. Two populations of psyllids were assayed (Texas, Washington). The Texas population overlaps extensively with native Convolvulaceae, whereas Washington State is noticeably lacking in Convolvulaceae. Results of assays were overlain on a phylogenetic analysis of plant species to examine whether Convolvulaceae distantly related to the typical host (potato) were less likely to allow development than species of Convolvulaceae more closely related. Survival was independent of psyllid population and location of the plant species on our phylogenetic tree. We then examined whether presence of a fungal symbiont of Convolvulaceae (Periglandula spp.) affected psyllid survival. These fungi associate with Convolvulaceae and produce a class of mycotoxins (ergot alkaloids) that may confer protection against plant-feeding arthropods. Periglandula was found in 11 of our 14 species, including in two genera (Convolvulus, Calystegia) not previously known to host the symbiont. Of these 11 species, leaf tissues from five contained large quantities of two classes of ergot alkaloids (clavines, amides of lysergic acid) when evaluated by LC-MS/MS. All five species also harbored Periglandula. No ergot alkaloids were detected in species free of the fungal symbiont. Potato psyllid rapidly died on species found to harbor Periglandula and fungus-produced alkaloids, but survived on species in which the mutualism was absent. These results support the hypothesis that a plant-fungus symbiotic relationship affects the suitability of certain Convolvulaceae to potato psyllid.
Elvira M.s.m. Gaspar - One of the best experts on this subject based on the ideXlab platform.
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soldanelline b the first acylated nonlinear tetrasaccharide macrolactone from the european Convolvulaceae calystegia soldanella
European Journal of Organic Chemistry, 2001Co-Authors: Elvira M.s.m. GasparAbstract:The first acylated nonlinear tetrasaccharide resin glycoside, soldanelline B (1), and its fatty acid derivative soldanellic acid B (2), have been isolated from a Portuguese Convolvulaceae Calystegia soldanella. The structures were elucidated using high-field NMR spectroscopy, FAB mass spectrometry and chemical studies.
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NEW PENTASACCHARIDE MACROLACTONE FROM THE EUROPEAN Convolvulaceae CALYSTEGIA SOLDANELLA
Tetrahedron Letters, 1999Co-Authors: Elvira M.s.m. GasparAbstract:Abstract A new nonlinear pentasaccharide resin glycoside Soldanelline A ( 1 ) has been isolated from a Portuguese Convolvulaceae Calystegia soldanella . The structure of compound 1 was elucidated using high-field NMR spectroscopy, mass spectrometry and chemical studies.
Eckart Eich - One of the best experts on this subject based on the ideXlab platform.
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comprar solanaceae and Convolvulaceae secondary metabolites biosynthesis chemotaxonomy biological and economic significance a handbook eich eckart 9783540745402 springer
2008Co-Authors: Eckart EichAbstract:Tienda online donde Comprar Solanaceae and Convolvulaceae: Secondary Metabolites · Biosynthesis, Chemotaxonomy, Biological and Economic Significance (A Handbook) al precio 273,10 € de Eich, Eckart, tienda de Libros de Medicina, Libros de Biologia - Zoologia
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solanaceae and Convolvulaceae secondary metabolites
2008Co-Authors: Eckart EichAbstract:Solanaceae and Convolvulaceae- secondary metabolites , Solanaceae and Convolvulaceae- secondary metabolites , کتابخانه دیجیتالی دانشگاه علوم پزشکی و خدمات درمانی شهید بهشتی
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N1,N10-ditigloylspermidine, a novel alkaloid from the seeds of Ipomoea nil.
Die Pharmazie, 2005Co-Authors: Thomas Schimming, Kristina Jenett-siems, Karsten Siems, L. Witte, Eckart EichAbstract:A novel spermidine alkaloid, N1,N10-ditigloylspermidine (1), has been isolated from the seeds of Ipomoea nil (L.) Roth (Convolvulaceae). Structural elucidation was achieved by EIMS, HRMS, 1H NMR, and 13C NMR spectroscopy.
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DISTRIBUTION AND TAXONOMIC SIGNIFICANCE OF CALYSTEGINES IN THE Convolvulaceae
Phytochemistry, 1998Co-Authors: Thomas Schimming, Kristina Jenett-siems, Britta Tofern, Petra Mann, Anuschka Richter, Birgit Dräger, Naoki Asano, Mahabir P. Gupta, Mireya Correa, Eckart EichAbstract:Abstract The GC-MS analysis of 65 convolvulaceous species from many, predominantly tropical provenances, belonging to 22 genera (9 tribes), revealed the occurrence of one to five calystegines in 30 species belonging to 15 genera (8 tribes). This indicates the chemotaxonomic significance of these glycosidase inhibiting polyhydroxy-nortropanes for the Convolvulaceae.
