Differences in parasitism of Meloidogyne incognita and two genotypes of M. arenaria on Solanum torvum in Japan,
Differences in parasitism of Meloidogyne incognita and two genotypes of M. arenaria on Solanum torvum in Japan,
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日本根结线虫和两种基因型沙星根结线虫在托鲁巴姆上寄生的差异，
DOI：
10.1111/jph.12594
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发表时间：
2017
影响因子：
1.5
通讯作者：
Iwahori H,
中科院分区：
文献类型：
--
作者：
Uehara T;Tateishi Y;Kadota Y;Iwahori H,
日本根结线虫有A2-O和A2-J两种根结线虫基因型。根据线粒体DNA序列将它们区分开来。引物SET(C2F3/1108)从A2-J扩增出1.7kb的片段，而从A2-O扩增出1.1kb的片段。在日本南部的部分地区检测到花生支原体(A2-O)，而花生支原体(A2-J)从九州地区到东北地区普遍存在。茄子根结线虫A2-J的分布与茄子栽培面积重叠，龙葵在世界范围内被用作茄子栽培的砧木，对根结线虫具有抗性。特别是，据报道，在日本以外的地方，这是一种具有抗药性的细菌。在本研究中，我们用黑星根结线虫(A_2-J)、黑星根结线虫(A_2-O)和南方根结线虫种群接种南方根瘤菌品种。虽然隐名斑潜蝇和斑潜蝇(A2-O)只产生少量卵块，从而证实了其抗性，但斑潜蝇(A2-J)的四个地理种群在斑潜蝇上产生了大量卵块。本研究证实，在日本茄子产区，番茄白粉病抗性种群为隐名白僵菌和白粉菌(A2-O)种群，但对白粉病种群为敏感种群。
Two genotypes of root‐knot nematode,Meloidogyne arenaria(A2‐O and A2‐J), are found in Japan. They were distinguished from each other based on mitochondrial DNA sequences. The primer set (C2F3/1108) amplified a 1.7‐kb fragment from A2‐J, whereas a 1.1‐kb fragment was amplified from A2‐O.M.arenaria(A2‐O) was detected in local regions of southern Japan, whereasM. arenaria(A2‐J) was widespread from the Kyushu region to the Tohoku region. The distribution ofM. arenaria(A2‐J) overlaps with the cultivation area of eggplant.Solanum torvumis used worldwide as a rootstock for eggplant cultivation, and it is resistant toMeloidogynespp. In particular, it is reported thatS. torvumis resistant toM. arenariaoutside Japan. In this study, we inoculatedS. torvumrootstock cultivars withM. arenaria(A2‐J),M. arenaria(A2‐O) andMeloidogyne incognitapopulations. AlthoughM. incognitaandM. arenaria(A2‐O) produced only a few egg masses onS. torvum, thereby confirming its resistance, the four geographical populations ofM. arenaria(A2‐J) produced large numbers of egg masses onS. torvum. This study confirmed thatS. torvumis resistant toM. incognitaandM. arenaria(A2‐O) populations, but susceptible to populations ofM. arenaria(A2‐J) in the eggplant production area of Japan.