Results 11 to 20 of about 3,112 (203)

Factors Influencing Aster Leafhopper (Hemiptera: Cicadellidae) Abundance and Aster Yellows Phytoplasma Infectivity in Wisconsin Carrot Fields [PDF]

open access: yesEnvironmental Entomology, 2013
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.
K E, Frost   +4 more
openaire   +4 more sources

Genetic Variation Among Geographically Disparate Isolates of Aster Yellows Phytoplasma in the Contiguous United States. [PDF]

open access: yesJ Econ Entomol, 2020
Clements J   +8 more
europepmc   +2 more sources

Evidence on Possible Mycoplasma Etiology of Aster Yellows Disease II. Suppression of Aster Yellows in Insect Vectors [PDF]

open access: yesInfection and Immunity, 1970
Chlortetracycline or chloramphenicol (but not kanamycin, penicillin, or erythromycin), when administered in hydroponic solution to diseased aster, reduced the availability of the aster yellows (AY) agent to nymphs of Macrosteles fascifrons (Stål).
R F, Whitcomb, R E, Davis
openaire   +2 more sources

The Influence of Reflective Mulches and Lettuce Types on the Incidence of Aster Yellows and Abundance of its Vector, \u3ci\u3eMacrosteles Fascifrons\u3c/i\u3e (Homoptera: Cicadelidae), in Minnesota [PDF]

open access: yes, 2017
Five commercial lettuce cultivars representing different genetic types were grown through aluminum-coated paper, through black polyethylene film, and on bare soil. For each variety, the aluminum mulch reduced the numbers of Macrosteles fascifrons (St~l),
Zalom, Frank G
core   +2 more sources

Use of Aluminum-Foil and Oat-Straw Mulches for Controlling Aster Leafhopper, \u3ci\u3eMacrosteles Fascifrons\u3c/i\u3e (Homoptera: Cicadellidae), and Aster Yellows in Carrots. [PDF]

open access: yes, 2017
Aluminum-foil and oat-straw mulches significantly (P \u3c 0.05) reduced aster leafhopper numbers on carrots compared to an untreated control and a malathion spray treatment during the first half of the growing season.
Ragsdale, David W, Setiawan, Dwi P
core   +2 more sources

Weed hosts of phytoplasmas in the Czech Republic

open access: yesPlant Protection Science, 2002
The research was focused on wild plants that represent possible sources of phytoplasma infection. Thirteen species of wild herbaceous plants with symptoms of shoot proliferation, phyllody, virescence, sterility or yellowing have been collected from ...
P. Válová   +5 more
doaj   +1 more source

Development of Aster Yellows on Crop and Noncrop Species from the Canadian Prairies

open access: yesPhytoFrontiers, 2023
Aster yellows phytoplasmas (AYp) are a group of obligate parasites that infect a wide range of plant species, including crops such as canola and cereals and noncrops such as dandelion and wild mustard.
Berenice Romero   +4 more
doaj   +1 more source

Genetic variability among isolates of Coconut lethal yellowing phytoplasmas determined by heteroduplex mobility assay (HMA) [PDF]

open access: yes, 2008
Heteroduplex mobility assay (HMA) was used to determine genomic diversity among African isolates of coconut lethal yellowing phytoplasmas causing Cape St.
Dollet, Michel   +2 more
core   +2 more sources

Molecular characterisation of phytoplasmas infecting roses in Poland

open access: yesActa Agrobotanica, 2013
Symptoms of shoot dieback and leaf yellowing followed by leaf chlorosis were observed in naturally infected roses 'Frisco' and 'Suela', cultivated in a commercial greenhouse in Poland.
Hanna Śliwa   +2 more
doaj   +1 more source

Refinement of the taxonomic structure of 16SrXI and 16SrXIV phytoplasmas of gramineous plants using multilocus sequence typing [PDF]

open access: yes, 2016
Phytoplasmas that infect gramineous plants, including Napier grass stunt, sugarcane whiteleaf, sugarcane grassy shoot, and Bermuda grass whiteleaf, have been classified into two closely related groups, 16SrXI and 16SrXIV, based on the 16S ribosomal RNA ...
Chamini Kanatiwela-de Silva   +10 more
core   +2 more sources

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