'Candidatus Phytoplasma mali' is a phytopathogenic bacterium of the family Acholeplasmataceae assigned to the class Mollicutes. This causative agent of the apple proliferation colonizes in Malus domestica the sieve tubes of the plant phloem resulting in a range of symptoms such as witches'--broom formation, reduced vigor and affecting size and quality of the crop. The disease is responsible for...

Walnut trees displaying symptoms similar to those caused by phytoplasmas, including foliar chlorosis, yellowing and shortening of internodes, were found in a fruit orchard the north Fars province, Iran 2020 (Fig. 1). Samples collected analysed PCR detect identify possible phytoplasma(s) associated with diseased plants. Four four asymptomatic walnut sampled for presence phytoplasma. Total DNA wa...

most commercial varieties in the cooler months will fade with In a survey of the South African and Swaziland sugarcane industries in 1997, symptoms of yellow leaf syndrome (YLS) were found in all areas and in a wide range of varieties. As in previous years, symptoms were present from late autumn to early summer. Symptoms were particularly common in the contrasting areas of the Midlands region o...

Background: Alfalfa, Medicago sativa L. is the most important and widely grown leguminous fodder crop in temperate tropical regions of world. The production alfalfa limited by several biotic stresses, among which witches’ broom disease (AWB) was reported to cause significant economic losses. Methods: phytoplasma infected plants were collected from a central research farm, ICAR-IGFRI, Jhansi, U....

This article provides an up-to-date review of disease-causing viruses and phytoplasmas currants including symptoms, transmission, detection, economic impact, control measures. Currants are widely cultivated in more than 30 countries the temperate zones Europe, Asia, South America, Australia, New Zealand. Ribes spp. can be infected by 20 virus species four Candidatus Phytoplasma species, with to...

Acerola bushes were observed showing symptoms of shoot proliferation, generalized stunting, yellowing and decline. Since these are typically induced by phytoplasmas, this survey was carried out with the aim detecting, identifying classifying supposed phytoplasma present in symptomatic bushes. Total DNA extracted from asymptomatic samples used nested PCR conducted primer pairs R16mF2/mR1 followe...