New Zealand Journal of Crop and Horticultural Science abstracts

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Viroid, phytoplasma, and fungal diseases of stone fruit in eastern Anatolia, Turkey

H. M. Sipahioglu¹
S. Demir¹
A. Myrta²
M. Al Rwahnih²
B. Polat¹
L. Schena³
M. Usta¹
A. Akkopru¹
M. Selcuk⁴
A. Ippolito³
A. Minafra^{5 3}

¹Department of Plant Protection
Faculty of Agriculture
Yuzuncu Yil University
65080 Van, Turkey
email: hmsipahi@yyu.edu.tr
²Mediterranean Agronomic Institute of Bari
Via Ceglie Valenzano
70010 Bari, Italy
³Dipartimento di Protezione delle Piante e
Microbiologia Applicata
Università degli Studi di Bari
Via Amendola 165/A
70126 Bari, Italy
⁴Diyarbakir Agricultural Research Institute
Inanoglu Cad.
21100 Diyarbakir, Turkey
⁵Istituto di Virologia Vegetale del CNR
Sezione di Bari Via Amendola 165/A
70126 Bari, Italy

Abstract Stone fruit trees were surveyed from June to October (2003 and 2004) to determine the incidence of viroid, phytoplasma, and fungal diseases in the eastern Anatolia region of Turkey. Molecular hybridisation test (tissue printing and dot-blot) was used to investigate the presence of Peach latent mosaic viroid (PLMVd) and Hop stunt viroid (HSVd). A total of 16 trees out of 491 were positive for viroids. PLMVd was found in 15 peaches (Prunus persica) (3%) and a unique HSVd isolate was found only in an apricot (Prunus armeniaca) tree (0.1%). The average incidence of viroid infection was 3.2%. HSVd was detected for the first time in eastern Anatolia, whereas no PLMVd infection was encountered in the main apricot growing provinces (Malatya, Elazig). PCR analyses of the few symptomatic apricots for the presence of “Candidatus Phytoplasma prunorum” were negative. Isolates of Armillaria mellea, Cytospora spp., Monilinia laxa, Stigmina carpophila, Chondrostereum purpureum, Fusarium spp., Rosellinia spp., and Phytophthora spp. were identified from symptomatic samples collected from the region.

Keywords PLMVd; HSVd; “Candidatus Phytoplasma prunorum”; fungal diseases; apricot; molecular hybridisation

New Zealand Journal of Crop and Horticultural Science, 2006, Vol. 34: 1–6
0014–0671/06/3401–0001      © The Royal Society of New Zealand 2006
H05070; Received 25 February 2005; accepted 16 August 2005; Online publication date 19 January 2006

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