Results 41 to 50 of about 1,545 (189)

Ultrastructural changes in aster yellows phytoplasma affected Limonium sinuatum Mill. plants II. Pathology of cortex parenchyma cells

open access: yesActa Societatis Botanicorum Poloniae, 2014
In Limonium sinuatum Mill, plants with severe symptoms of aster yellows infection phytoplasmas were present not only in the phloem but also in some cortex parenchymas cells.
Anna Rudzińska-Langwald   +1 more
doaj   +1 more source

Detection and Identification of Aster Yellows Phytoplasma Associated with Lipstick Yellow Frond Disease in Malaysia [PDF]

open access: yesJournal of Phytopathology, 2013
AbstractYellowing symptoms similar to coconut yellow decline phytoplasma disease were observed on lipstick palms (Cyrtostachys renda) in Selangor state, Malaysia. Typical symptoms were yellowing, light green fronds, gradual collapse of older fronds and decline in growth.
Naderali, Neda   +3 more
openaire   +1 more source

Filamentous sieve element proteins are able to limit phloem mass flow, but not phytoplasma spread [PDF]

open access: yes, 2017
In Fabaceae, dispersion of forisomes\u2014highly ordered aggregates of sieve element proteins\u2014in response to phytoplasma infection was proposed to limit phloem mass flow and, hence, prevent pathogen spread.
Buoso, Sara   +8 more
core   +1 more source

Pathogenicity of Aster Yellows Phytoplasma and Spiroplasma citri on Periwinkle [PDF]

open access: yesPhytopathology®, 1998
Using Murashige and Skoog (MS) as a basal medium, the effects of varying levels and combinations of plant growth regulators required for shoot tip and root proliferation in healthy and aster yellows phytoplasma (AYP)- and Spiroplasma citri-infected periwinkle (Catharanthus roseus) shoots were studied. Number of shoots and fresh and dry mass of healthy
openaire   +2 more sources

Ultrastructural changes in aster yellows phytoplasma affected Limonium sinuatum Mill. plants.I Pathology of conducting tissues

open access: yesActa Societatis Botanicorum Poloniae, 2014
Changes in anatomy and cytology of conducting tissues of Limonium sinuatum Mill. plants affected by aster yellows phytoplasma were investigated. In the phloem tissues of affected plants stem necrosis takes place.
Anna Rudzińska-Langwald   +1 more
doaj   +1 more source

First Report of Aster Yellows Phytoplasma in Grapevines in South Africa

open access: yesPlant Disease, 2010
For many years phytoplasma diseases have caused serious losses in most of the major grape-growing regions of the world, except South Africa, where a mixed phytoplasma infection was first reported in 2006 (1). During the early growing season of 2006, symptoms consistent with phytoplasma disease were observed in vineyards in the Olifants River Valley ...
M, Engelbrecht, J, Joubert, J T, Burger
openaire   +2 more sources

Presence of 16SrIV phytoplasmas of subgroups A,D and E in planthopper Haplaxius crudus Van Duzee insects in Yucatan, Mexico [PDF]

open access: yes, 2018
The present study was carried out to determine if group 16SrIV phytoplasmas, causing lethal yellowing (LY) disease, are present in Haplaxius crudus Van Duzee (Hemiptera: Cixiidae) insects associated with palms in Yucatán, Mexico.
Dollet, Michel   +8 more
core   +1 more source

First report of a ‘Candidatus Phytoplasma asteris’‐related strain (16SrI‐B) associated with three Sempervivum cultivars in Hungary

open access: yes, 2023
New Disease Reports, Volume 48, Issue 1, July–September 2023.
O. Viczián   +3 more
wiley   +1 more source

The influence of antibiotics on the appearance of magnolia stunting symptoms

open access: yesActa Agrobotanica, 2013
Treatment of diseased magnolia plants with oxytetracycline, baytril and tylan did not reduce the number of symptomatic plants. However, the sprays with antibiotics promoted the shoot growth, development of symptomless leaves and flower buds.
Maria Kamińska, Hanna Śliwa
doaj   +1 more source

Virus diseases of poppy (Papaver somniferum L.) and some other species of the Papaveraceae family - a review

open access: yesPlant Protection Science, 1999
Opium poppy (Papaver somniferum L.) is described in the literature as a natural host of turnip mosaic virus, bean yellow mosaic virus, beet yellows virus and beet mosaic virus, and experimental host of plum pox virus. P.
Darina Kubelková, Josef Špak
doaj   +1 more source

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