S. Tomada, E. Staffler, G. Dionis, S. Baric, A. Di Francesco
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引用次数: 0
Abstract
Cadophora luteo-olivacea has been reported as an emerging postharvest pathogen of pome fruit and kiwifruit with the potential to have a significant economic impact. To date, the biology and epidemiology of C. luteo-olivacea has been poorly investigated. Therefore, the present study aims to gain knowledge on C. luteo-olivacea biology, by analyzing the parameters that can influence the fungal growth and virulence and by getting information about the sensitivity to fungicides. A mycelial growth study at different temperatures was conducted with five C. luteo-olivacea isolates belonging to different host plants (apple and kiwifruit). The optimum fungal growth was observed in a temperature range between 20 °C and 25 °C, with C. luteo-olivacea isolates from kiwifruit that resulted in faster growth than apple isolates. The pathogenicity of C. luteo-olivacea isolates was evaluated on detached apple and kiwifruit twigs, on 'Golden Delicious' and 'Fuji' apples, and on 'Hayward' and 'Sungold' kiwifruit, stored both at 0 °C and 20 °C. The pathogenicity on fruit and on woody twigs was variable, depending on the host cultivar, with a minor effect related to the fungal isolate. Moreover, the efficacy of ten different plant protection products (PPPs) against the conidial germination of the isolates was determined. Few PPPs were found to be effective (e.g. fludioxonil, dithianon, and cyprodinil) against C. luteo-olivacea. These results represent a starting point for further research on the biology and epidemiology of C. luteo-olivacea and the development of effective management strategies.
据报道，Cadophora luteo-olivacea 是一种新出现的采后病原菌，可对梨果和猕猴桃产生重大经济影响。迄今为止，对 C. luteo-olivacea 的生物学和流行病学的研究还很少。因此，本研究旨在通过分析可能影响真菌生长和毒力的参数，以及了解真菌对杀菌剂的敏感性，从而了解 C. luteo-olivacea 的生物学特性。在不同温度下，对属于不同寄主植物（苹果和猕猴桃）的五种 C. luteo-olivacea 分离物进行了菌丝生长研究。在 20 °C 至 25 °C 的温度范围内，猕猴桃中的 C. luteo-olivacea 分离物比苹果分离物生长得更快。在 0 ℃ 和 20 ℃ 下保存的苹果和猕猴桃树枝、"金美味 "和 "富士 "苹果以及 "Hayward "和 "Sungold "猕猴桃上，对 C. luteo-olivacea 分离物的致病性进行了评估。果实和木质树枝上的致病性因寄主栽培品种而异，与真菌分离物的关系不大。此外，还测定了 10 种不同植物保护产品（PPPs）对分离菌分生孢子萌发的功效。结果发现，只有少数几种植保产品（如氟虫腈、二噻嘧啶酮和嘧菌酯等）对 C. luteo-olivacea 有效。这些结果为进一步研究 C. luteo-olivacea 的生物学和流行病学以及制定有效的管理策略提供了一个起点。
期刊介绍：
The European Journal of Plant Pathology is an international journal publishing original articles in English dealing with fundamental and applied aspects of plant pathology; considering disease in agricultural and horticultural crops, forestry, and in natural plant populations. The types of articles published are :Original Research at the molecular, physiological, whole-plant and population levels; Mini-reviews on topics which are timely and of global rather than national or regional significance; Short Communications for important research findings that can be presented in an abbreviated format; and Letters-to-the-Editor, where these raise issues related to articles previously published in the journal. Submissions relating to disease vector biology and integrated crop protection are welcome. However, routine screenings of plant protection products, varietal trials for disease resistance, and biological control agents are not published in the journal unless framed in the context of strategic approaches to disease management.
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