Ghuffar Salman, Saeed Muhammad Sajjad, Anwaar Sadaf, Anwar Tauseef, Qureshi Huma, Abdelbacki Ashraf M M, Zaman Wajid, Sayed Ali M
Department of Botany, Kohsar University, Murree, 47200, Pakistan.
Vegetable Research Institute, Ayub Agricultural Research Institute, Faisalabad, 38850, Pakistan.
BMC Plant Biol. 2025 Apr 10;25(1):455. doi: 10.1186/s12870-025-06506-w.
Potato (Solanum tuberosum L.) is a crop of global significance, with significant production in Pakistan, Egypt, etc. it is quite vulnerable to Streptomyces scabies, which causes common scab., leading to substantial yield and economic losses. Conventional control methods, including soil pH adjustment and chemical treatments, are often inconsistent and expensive, necessitating the development of resistant cultivars. This study isolated and purified S. scabies from infected tubers using yeast malt extract agar (YMA). The isolates were confirmed as pathogenic through hypersensitivity tests on Nicotiana tabacum. Ten potato cultivars were screened for resistance under greenhouse conditions using soil inoculated with two virulent S. scabies strains (ENC-2 and AQAB-1). Scab incidence and severity were assessed using a standard scab index. The cultivars showed varying susceptibility levels to S. scabies. Cardinal and Sarpomira exhibited the least susceptibility with scab indices of 10.67 and 12.50, respectively, and disease incidences below 60%. In contrast, Bartina and Desiree were highly susceptible, with scab indices of 24.54 and 24.88 and incidences of 86% and 72.72%. Cardinal and Sarpomira demonstrated as potential least susceptible cultivars against common scab, making them suitable for cultivation in scab-prone regions. Further research should focus on breeding resistant cultivars and exploring integrated management strategies to mitigate common scab in diverse potato-growing environments.
马铃薯（Solanum tuberosum L.）是一种具有全球重要性的作物，在巴基斯坦、埃及等地有大量种植。它极易受到引起普通疮痂病的疮痂链霉菌（Streptomyces scabies）的侵害，导致产量和经济损失巨大。包括土壤pH调节和化学处理在内的传统防治方法往往效果不稳定且成本高昂，因此有必要培育抗病品种。本研究使用酵母麦芽提取物琼脂（YMA）从受感染的块茎中分离并纯化了疮痂链霉菌。通过对烟草（Nicotiana tabacum）的过敏试验确认分离株具有致病性。在温室条件下，使用接种了两种强毒疮痂链霉菌菌株（ENC - 2和AQAB - 1）的土壤对10个马铃薯品种进行了抗性筛选。使用标准疮痂指数评估疮痂发病率和严重程度。这些品种对疮痂链霉菌的易感性水平各不相同。Cardinal和Sarpomira表现出最低的易感性，疮痂指数分别为10.67和12.50，病害发病率低于60%。相比之下，Bartina和Desiree高度易感，疮痂指数分别为24.54和24.88，发病率分别为86%和72.72%。Cardinal和Sarpomira被证明是对普通疮痂病潜在的最不易感品种，使其适合在易发生疮痂病的地区种植。进一步的研究应侧重于培育抗病品种，并探索综合管理策略，以减轻不同马铃薯种植环境中的普通疮痂病。
