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Emerging diseases in horticultural crops

Maria Lodovica Gullino: Agroinnova - University of Torino

<div>During recent years, many new diseases caused by foliar and soilborne pathogens have appeared for the first time worldwide on a number of vegetable crops and some diseases re-emerged as a consequence of globalization and climate change. This review will cover the emergence of new diseases in the vegetable sector and few re-emerged ones such as: <em>Peronospora belbahrii</em> on basil; <em>Fusarium equiseti</em> on lettuce, rocket and radish; <em>Myrothecium verrucaria</em> and <em>M. roridum</em> on lamb’s lettuce, spinach and wild rocket; <em>Allophoma tropica</em> on lettuce, <em>Phytophthora capsici</em> and Fusarium <em>solani</em> f. sp. <em>cucurbitae</em> on zucchini<em>, F. oxysporum</em> f. sp. <em>cucumerinum </em>on cucumber and <em>P. nicotianae</em> on tomato. New species of <em>Pythium </em>(<em>P. aphanidermatum</em>, <em>P. irregulare</em>, <em>P. dissotocum</em>, <em>P. sylvaticum</em>) have frequently been isolated on spinach and swiss chard, lamb’s lettuce, lettuce and bean. Many of the pathogens described are seed transmitted, a biological characteristic that raises the risk of disseminating diseases worldwide.</div>

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