温度对扁桃和李果实溃疡病病原菌生长发育的影响。
Effects of Temperature on Development of Canker-Causing Pathogens in Almond and Prune.
机构信息
Department of Plant Pathology, University of California Davis/Kearney Agricultural Research and Extension Center, Parlier, CA 93648, U.S.A.
College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830052, China.
出版信息
Plant Dis. 2022 Sep;106(9):2424-2432. doi: 10.1094/PDIS-01-22-0048-RE. Epub 2022 Aug 4.
Between 2000 and 2020, canker diseases of nut and stone fruit trees have become very widespread and severe in California. This study determined the effects of temperature on the development of canker-causing pathogens of almond and prune. Five pathogen taxa, , , () , , and , were used. Colony growth on medium and canker lesion development on detached shoots were measured at 10, 15, 20, 25, 30, and 35°C. The effects of temperature on colony growth differed among different pathogen taxa, although 25°C was the optimal temperature for most of the pathogens tested. The patterns of lesion growth as response to temperature were different among the different pathogens and tree crops. On almond, the highest growth rates appeared at 30°C for and , but at 20°C for . The growth rates for were lower than those of the other three pathogen taxa, with the highest rates recorded at 25°C. However, on prune, showed greater lesion growth rates at different temperatures than the other pathogen taxa and maximum growth at 30 to 35°C. Similar trends were observed for The growth rates of and were comparatively lower than those of and
在 2000 年至 2020 年间，加利福尼亚的坚果树和核果树上的溃疡病变得非常普遍和严重。本研究旨在确定温度对导致杏仁和李溃疡病的病原体发育的影响。本研究使用了 5 种病原体分类群，即 、 、 、 （ ）和 。在 10、15、20、25、30 和 35°C 下测量了培养基上的菌落生长和离体嫩枝上的溃疡病斑发展。尽管 25°C 是大多数测试病原体的最佳温度，但不同病原体分类群的菌落生长对温度的影响不同。不同病原体和树种对病斑生长对温度的反应模式不同。在杏仁上， 和 在 30°C 时的生长速度最高，但 在 20°C 时的生长速度最高。 的生长速度低于其他三种病原体分类群，在 25°C 时记录的生长速度最高。然而，在李树上， 比其他病原体分类群在不同温度下表现出更高的病斑生长速度，最高生长速度在 30 至 35°C。 也观察到类似的趋势。 和 的生长速度比 和 低。
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