Muhammad Rizwan1*, Bilal Atta1, Ana Maria Marino de Remes Lenicov2, Roxana Mariani2, Arshed Makhdoom Sabir1, Muhammad Tahir3, Misbah Rizwan4, Muhammad Sabar1, Ch. Muhammad Rafique1, Muhammad Afzal5
...s Cixiids are vectors of phytoplasmas, mycoplasmas and prokaryotes-like associated to the class Mollicutes. Specimens of planthoppers were collected from the rice fields and surrounding weeds. A list of Fulgoromorpha is provided, with distributional and biological records as well. Records are extracted primarily from field data and specialized reference sources. Seven species from two different families of Fulgoromorpha were related to rice ecosystem (Cixiidae...
Mokbel, Samah A.1,Ahmed K. El Attar1; Azza G.Farag2.
...rnoratesand analyzed for phytoplasma infection.The
collected hibiscus plants showed characteristic symptoms for Phytoplasma associated
witches‟-Broom disease, which is characterized by excessive axillary branching,
abnormally small leaves, and deformed flowers. Dienes‟ stain was used for detection of
witches‟ broom infection midribs of the symptomatichibiscus plant. The p...
Samah A. Mokbel, Ahmed K. El-Attar
...t.
...
M. A. S. El-kady1; A. B. Badr2; Ahmed K. El-Attar1, Hoda M. A. Waziri1 and Kh. E. A. Saker1
Eman A. Ahmed1, Osama Y. Shalaby2, Emad F. Dwidar2, Samah A. Mokbel1, Ahmed K. El-Attar1
...ence and distribution of phytoplasma associated with diseased
tomato plants (Solanum lycopersycum L.), and to identify and classify the phytoplasma
involved. A detection of infected tomato plants, which showed symptoms of big bud,
witches'-broom and phyllody, in all regions of the screened governorates, reacted
positively when assayed by nested polymerase chain reactions (PCR) ...
Eman A. Ahmed1, Osama Y. shalaby2, Emad F. Dwidar2, Samah A. Mokbel1 and Ahmed K. El-Attar1
... of infected tomato with phytoplasma with healthy ones in order to reveal anatomical modifications caused by the infection process. The results obtained showed that infection of tomato plants with phytoplasma led to an increase in stem diameter by 10.23% as well as greatly increase in measurements of the other stem components while the diameter of pith was decreased by 38.46%. This infection was led to an increase in the dia...
Salama M. El-Saghir1, 2
...iv>suspected symptoms of phytoplasma infection were detected. These involved leaf yellowing and
withering, reduction in fruit size, malformation of fruits (where two or three fruits were attached
together), and tree death were observed.
Objective: The objective of this study is to characterize the nature of this disease complex through
examining the incidence of PNRSV and phytoplasma
Rasha M. Mahrous1,4, Ahmed K. El-Attar2, Ahlam A. AlWatban1, Sohair I. EL-Afifi3,
Nagwa M. Aref1,3
... isolated WB
phytoplasma.
Method: Phytoplasma was isolated from lime trees exhibited Witches' broom Symptoms in ALQalyubia
governorate, Egypt by grafting on indicator (Vollka marina ) plants. The Phytoplasma was
transmitted from naturally infected Lemon (Citrus limon) to healthy periwinkle (Catharanthus roseus)
by dodder (Cuscuta ...
Shimaa M. Gad1, Ahmed A. Kheder1, Mohamed A. Awad 2
...ecular identification of phytoplasma infecting
Gazania in Egypt.
Methods: Phytoplasma disease was detected and isolated from naturally infected gazania plants during
surveys in flower nurseries and open filed in Giza governorate, it was transmitted from naturally
infected Gazania to healthy periwinkle and other ornamental plants by dodder (Cuscuta reflexa ), and
the...
Karl Maramorosch
...ow known to be caused by phytoplasmas and spiroplasmas. Earlier attempts to concentrate, purify and visualize by electron microscopy the presumptive viruses have failed. Causative agents of yellows-type plant diseases were classified as viruses because no fungi or bacteria could be detected in diseased plants. The inadequate characterization of viruses delayed the discovery of the pathogens of yellows-type diseases by forty years. In 1967 Japanese plant pathol...
Mohsin Raza1, Zeshan Hussain2, Fazil Abbas2, Muhammad Atiq Ashraf3, Hadj Henni Imene4 and Talha Riaz5
...ses, viroids, fungi, and phytoplasmas. In Pakistan, significant viral infections, particularly PVY, PMTV, PLRV, PVM, PVS, PVA, and PVX, are of serious concern, with alarmingly high prevalence of PLRV, PVX, and PVY in key potato-growing regions. Effective management of these viral threats is challenging due to the lack of direct chemical controls, underscoring the importance of prevention as the primary strategy. Rapid and precise detection methods are essentia...
