EFS12- Book of abstracts - Contact
EFS12- Book of abstracts - Contact
EFS12- Book of abstracts - Contact
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SESSION 3: PATHOGENESIS – EPIDEMIOLOGY AND POPULATION<br />
GENETICS<br />
Comparisons <strong>of</strong> Fusarium species obtained from<br />
healthy and diseased wheat plants in three agroecological<br />
regions <strong>of</strong> Turkey<br />
B. Tunali, B. Kansu, D. Demir, F. Kılınç<br />
Ondokuz Mayis University, Agricultural Faculty Department <strong>of</strong> Plant Protection, 55139 Atakum<br />
Samsun, Turkey<br />
E-mail: btunali@omu.edu.tr<br />
This study was focused on Fusarium species in wheat plants were healthy (no<br />
symptoms) and symptomatic with crown rot, or/and head blight (diseased) and<br />
determine <strong>of</strong> frequency <strong>of</strong> these species on crowns and ears. In total 304 wheat<br />
fields were surveyed in 2009, 2010 and 2012 years. Collected wheat plants were<br />
healthy and diseased from 20 provinces <strong>of</strong> 3 agro-ecological regions in Turkey.<br />
Fusarium species were isolated from crowns and ears <strong>of</strong> wheat and were<br />
identified morphologically. As a result <strong>of</strong> this study, among Fusarium species, F.<br />
oxysporum was the most frequently detected one in the endophytic species from<br />
healthy plants; F. equiseti was the most frequently detected one from diseased<br />
plants. There were significantly differences on number <strong>of</strong> Fusarium isolates and<br />
distribution <strong>of</strong> Fusarium species between crowns and ears <strong>of</strong> wheat. While F.<br />
acuminatum, F. verticillioides, F. semitectum were the most frequent species in<br />
ears <strong>of</strong> healthy plants, F. oxysporum, F. solani and F. subglutinans were the most<br />
frequent in crowns <strong>of</strong> healthy plants, respectively. While, F. poae, F. avenaceum<br />
and F. graminearum were the most frequent species in ears <strong>of</strong> diseased plants, F.<br />
equiseti, F. acuminatum, F. oxysporum and F. semitectum were most frequent in<br />
crowns <strong>of</strong> diseased plants respectively. F. culmorum was found quite numbers in<br />
crowns <strong>of</strong> diseased plants; but only one healthy plant was infected with F.<br />
culmorum. After pathogenecity test none <strong>of</strong> endophytic Fusarium species shown<br />
disease symptoms in greenhouse conditions. In 3 agro-ecologic regions <strong>of</strong><br />
Turkey, northwest and northern Anatolia regions have head blight disease<br />
symptoms, but none <strong>of</strong> plants have had head blight symptoms in dryland plateau<br />
<strong>of</strong> Central Anatolia region. We are also continuing to study on antibiosis effect on<br />
Fusarium crown rot agents, enzyme activity and affection <strong>of</strong> plant growing ratio <strong>of</strong><br />
endophytic Fusarium isolates.<br />
Key words: Endophyte, Fusarium, crown rot, head blight, agro-ecological<br />
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