Leafhoppers (Hemiptera: Auchenorrhyncha: Cicadellidae) account for more than 80% of all "Auchenorrhynchous" vectors that transmit phytoplasmas. The leafhopper populations in two almond witches'-broom phytoplasma (AlmWB) infected sites: Tanboureet (south of Lebanon) and Bourj El Yahoudieh (north of Lebanon) were surveyed using yellow sticky traps. The survey revealed that the most abundant speci...

Phytoplasmas are a group of bacteria that are associated with hundreds of plant diseases. Due to their economical importance and the difficulties involved in the experimental study of these obligate pathogens, genome sequencing and comparative analysis have been utilized as powerful tools to understand phytoplasma biology. To date four complete phytoplasma genome sequences have been published. ...

A molecular tool, focused on the mitochondrial Control Region (CR), was developed to discriminate the two hawthorn-feeding psyllid species, Cacopsylla melanoneura (Förster) and C. affinis (Löw), and to estimate their frequencies in mixed populations. The test was carried out in paired and single-tube amplifications and validated analysing 52 male specimens previously determined by morphological...

Phytoplasmas are plant pathogenic bacteria that are transmitted by insects. We examined several molecular biological findings involved in both plant–phytoplasma interactions and insect–phytoplasma interactions. (i) The complete genomic sequence of the phytoplasma suggested that the genome encodes very few metabolic functions, implying that the consumption of metabolites by phytoplasmas in plant...

BACKGROUND Witches' broom disease of Mexican lime (Citrus aurantifolia L.), which is associated to the phytoplasma 'Candidatus Phytoplasma aurantifolia', is a devastating disease that results in significant economic losses. Plants adapt to biotic stresses by regulating gene expression at the transcriptional and post-transcriptional levels. MicroRNAs (miRNAs) are a recently identified family of ...

Aims: This study was conducted to determine the phytoplasma diseases of pepper plants in Hatay province between 2016 and 2019.Methods Results: Samples (Capsicum annuum), sesame (Sesamum indicum), basil (Ocimum basilicum), tomato (Solanum lycopersicum) bindweed (Convolvulus arvensis) which had typical symptoms insect (Cicadellidae spp.) samples were collected from fields. Empoasca sp., Cicadulin...

Phytoplasmas are cell-wall-less members of the bacterial class Mollicutes that are obligate parasites of plants and insect vectors. Phytoplasmas cause hundreds of plant diseases, several of which have worldwide agricultural significance (17). The plant host range of some phytoplasma strains may be very wide. This is the case for X-disease phytoplasma (Xp). Although X-disease is an economic dise...

Abstract Phytoplasmas are small bacterial parasites that lack cell walls and transmitted in a persistent-propagative manner by insect vectors. However, detailed multiplication patterns movements of phytoplasmas within host plant vector remain elusive. In this study, specific antibody against the immunodominant membrane protein (Imp) rice orange leaf phytoplasma (ROLP) was generated subjected to...