First report of lettuce yellowing disease caused by a ‘Candidatus Phytoplasma asteris’‐related strain in Lactuca sativa in Turkey

Abstract

Lettuce (Lactuca sativa) is grown in greenhouse or field conditions in most parts of Turkey. It is generally cultivated as a winter crop in southern regions of Turkey where the climatic conditions are suitable.Commercially grown lettuce showing typical phytoplasma symptoms of yellowing, malformation, little leaf, shoot tip necrosis, stunting and aThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

‘Candidatus Phytoplasma asteris’ (16SrI-B alt grup) ile infekteli marul (Lactuca sativa L.)’da biyokimyasal değişimler

“…Previously reported causal agent including symptoms such as yellowing, small leaf, necrosis, stunting, and a general decline in lettuce plants had been related to Ca. Phytoplasma asteris through PCR tests (Akkurak et al, 2021). In this study, healthy control (n=6) and symptomatic (n=8) leaves of L. sativa were collected for DNA extraction to confirm our previous findings if the symptomatic lettuce plants still possess the confirmed phytoplasma agent.…”

“…In addition to these factors, phytoplasmas, could also be counted as bacterial agents, leading to symptoms such as yellowing, wilting, chlorotic local lesion, deformity, witches' broom formation and stunting in lettuce plants (Akkurak et al, 2021). Phytoplasmas are located in the Mollicute class of the Prokaryotae kingdom.…”

“…P. trifolii in tomatoes and potatoes, Ca. P. asteris in lettuce are the important phytoplasmas that have been transferred via insects (Çağlar et al, 2010;Yılmaz et al, 2019;Ulubaş Serçe and Yılmaz, 2019;Güller and Usta, 2020;Akkurak et al, 2021).…”

“…We then stated that the component producing these symptoms was discovered to be associated to the Candidatus Phytoplasma asteris (16SrI-B) subgroup as a consequence of the analysis. (Akkurak et al, 2021). In this study, we aimed to examine the biochemical changes in antioxidant enzymes (POD and CAT) along with chlorophyll, protein, malondialdehyde (MDA) and proline contents in lettuce plant infected by Ca.…”

A new disease of spring onion associated with a ‘Candidatus Phytoplasma asteris’‐related strain in Turkey

“…Recently, Akkurak et al. (2021) reported that a phytoplasma causing yellowing symptoms in lettuce in the Turkish province of Sanliurfa belonged to the 16SrI‐B subgroup. Caglayan et al.…”