@conference{
author = "Jović, Jelena and Krstić, Oliver and Cvrković, Tatjana and Jakovljević, Miljana and Marinković, Slavica and Mitrović, Milana and Toševski, Ivo",
year = "2024",
abstract = "The planthopper Hyalesthes obsoletus Signoret, 1865 (Hemiptera: Cixiidae) is a major vector and
driver of 'Ca. Phytoplasma solani' epidemiology (Maixner, 1994; Jović & Toševski, 2023) and
associated diseases of cultivated plants, including the grapevine-Bois noir (BN) pathosystem. Because
of its strong association with its host plants as a subterranean nymph and short life span as an adult
(Cargnus et al., 2012), the epidemiological cycle is host plant-specific and is determined by the vector's
host range and the pathogen's reservoir range (Imo et al., 2013; Maixner et al., 2014). Although H.
obsoletus is commonly viewed as a polyphagous insect, there is plenty of proof of host plant adaptation
in its populations, which are referred to as host races, biotypes, or cryptic species (Imo et al., 2013;
Maixner et al., 2014; Kosovac et al., 2016; 2018; 2019). The first described and most prevalent
epidemiological cycles linked with distinct strains of 'Ca. P. solani' are driven by nettle and bindweed
as pathogen reservoir plants and H. obsoletus host plants (Langer & Maixner, 2004). The genetic
distinction between the two pathosystems was initially identified on the tuf gene and then verified by
secY, stamp, and vmp1 gene typing (Langer & Maixner, 2004; Johannesen et al., 2012; Aryan et al.,
2014). In Serbia and the Balkans, nettle-associated 'Ca. P. solani' genotypes are not commonly found
in BN-affected grapevine (Atanasova et al., 2015; Kosovac et al., 2016); hence, research on this
epidemiological pathway is neglected and available data are scarce. During more than a decade of
research on 'Ca. P. solani' epidemiology and H. obsoletus biology, ecology, and genetics in the
Balkans, we have frequently found the presence of "wrong" 'Ca. P. solani' genotypes in vector
specimens obtained from nettles. Here, we assess these findings and call into question the geographic
specificity of nettle-associated epidemiology in southeastern Europe.",
publisher = "UMR-1332 Fruit Biology and Pathology, University of Bordeaux and INRAE",
journal = "Proceedings of the 6th European Bois Noir workshop and 1st International Pro-AECOGY conference 14-16 may, 2024",
title = "Hyalesthes obsoletus and nettle-associated 'Ca. Phytoplasma solani' epidemiological cycle in Serbia and the Balkans: Is it closed and specific?",
pages = "21-20"
}
