First report of Alternaria leaf spot caused by Alternaria alternata (Fries.) Kiessler on Sonchus oleraceus L. and Convolvulus arvensis L. in Algeria

Autor:	Nadjia Zermane, Nesma Abdessemed, Youssef Anis Bahet, Nacèra Talbi, Ali Kerroum
Přispěvatelé:	Ecole Natl Super Agron, Ex INA, Dept Bot, Algiers, Algeria, Partenaires INRAE, Szent Istvan Univ, Dept Vegetable & Mushroom Growing, Budapest, Hungary, BIOlogie et GEstion des Risques en agriculture (BIOGER), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris Saclay (COmUE), Université d'Alger Benyoucef Benkhedda, General Directorate of Scientific Research and Technological Development (DGRSDT, Algeria) within the MEDILEG Project ARIMNet 2011
Rok vydání:	2019
Předmět:	0106 biological sciences Physiology [SDV]Life Sciences [q-bio] Plant Science 01 natural sciences Alternaria alternata 03 medical and health sciences Genetics Leaf spot 030304 developmental biology 0303 health sciences biology Convolvulus arvensis food and beverages Alternaria biology.organism_classification 3. Good health Sonchus oleraceus Horticulture [SDE]Environmental Sciences leaf spot Agronomy and Crop Science Convolvulus 010606 plant biology & botany
Zdroj:	Journal of Phytopathology Journal of Phytopathology, Wiley, 2019, 167 (6), pp.321-325. ⟨10.1111/jph.12800⟩ file:///C:/Users/cguillard/Documents/PUBLI%202019/Talbi%20N%202019%20-Journal%20of%20Phytopathology.html
ISSN:	1439-0434 0931-1785
DOI:	10.1111/jph.12800
Popis:	International audience; Alternaria leaf spot caused by Alternaria alternata (Fries.) Kiessler was found on sow thistle (Sonchus oleraceus L.) and field bindweed (Convolvulus arvensis L.) in the experimental station of ENSA (Ecole Nationale Superieure d'Agronomie) in Algiers, Algeria, during the winter of 2016. Necrotic spots in the form of concentric circles were observed on the leaves of both weeds with disease incidence of approximately 70% and disease severity ranging from 50% to 70%. Fungi were isolated from the infected leaves and identified as A. alternata, based on morphological and molecular analyses (using genetic marker internal transcribed spacer, ITS of rDNA). Pathogenicity tests confirmed that A. alternata is the causing agent of leaf spot disease of sow thistle and field bindweed in accordance with the original symptoms. To the best of our knowledge, this is the first report of sow thistle and field bindweed naturally infected by A. alternata in Algeria.
Databáze:	OpenAIRE
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