Kawaguchi Akira, Inoue Koji, Tanina Koji
Research Institute for Agriculture, Okayama Prefectural Technology Center for Agriculture, Forestry and Fisheries, 1174-1 Koudaoki, Akaiwa City, Okayama 709-0801, Japan.
Plant Dis. 2015 Mar;99(3):409-414. doi: 10.1094/PDIS-06-14-0588-RE.
The nonpathogenic strain of Agrobacterium (=Rhizobium) vitis ARK-1 is a biological agent able to effectively control grapevine crown gall. In this study, treating apple, Japanese pear, peach, rose, and tomato by soaking the roots in a cell suspension of ARK-1 before planting into soil infected with tumorigenic Agrobacterium spp. reduced the number of plants developing crown gall tumors. Meta-analyses of the results from six field trials of apple, four field trials of Japanese pear, and four field trials of peach, from 2010 to 2013, showed integrated risk ratio (IRR) after treatment with ARK-1 to be 0.38 for apple crown gall, 0.16 for Japanese pear crown gall, and 0.20 for peach crown gall, indicating that the disease incidence was significantly reduced by ARK-1 treatment. Meta-analyses of the results from three greenhouse trials of rose and three greenhouse trials of tomato showed IRR after treatment with ARK-1 to be 0.29 for rose crown gall and 0.16 for tomato crown gall, indicating that the disease incidence was significantly reduced by ARK-1 treatment. These results indicated that control by ARK-1 covers five different species of host plants and tumorigenic (Ti) strains of Agrobacterium species.
根癌农杆菌（= 根瘤菌）非致病菌株ARK - 1是一种能够有效防治葡萄根癌病的生物制剂。在本研究中，将苹果、日本梨、桃、玫瑰和番茄在种植到感染致瘤农杆菌属的土壤之前，通过将其根部浸泡在ARK - 1细胞悬浮液中进行处理，减少了出现根癌肿瘤的植株数量。对2010年至2013年苹果的6次田间试验、日本梨的4次田间试验和桃的4次田间试验结果进行的荟萃分析表明，用ARK - 1处理后，苹果根癌病的综合风险比（IRR）为0.38，日本梨根癌病为0.16，桃根癌病为0.20，这表明ARK - 1处理显著降低了发病率。对玫瑰的3次温室试验和番茄的3次温室试验结果进行的荟萃分析表明，用ARK - 1处理后，玫瑰根癌病的IRR为0.29，番茄根癌病为0.16，这表明ARK - 1处理显著降低了发病率。这些结果表明，ARK - 1的防治作用涵盖了5种不同的寄主植物和农杆菌属的致瘤（Ti）菌株。
