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...
