The Effect of Raffaelea quercus-mongolicae Inoculations on the Formation of Non-conductive Sapwood of Quercus mongolica.
The Effect of Raffaelea quercus-mongolicae Inoculations on the Formation of Non-conductive Sapwood of Quercus mongolica.
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DOI：
10.5941/myco.2014.42.2.210
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发表时间：
2014-06
期刊：
影响因子：
1.9
通讯作者：
Yamada T
中科院分区：
文献类型：
--
作者：
Torii M;Matsuda Y;Seo ST;Kim KH;Ito S;Moon MJ;Kim SH;Yamada T
在韩国，蒙古栎树的大规模死亡自2004年以来变得明显。蒙古栎属（Raffaelea quercus-mongolicae）被认为是导致死亡的致病真菌。为了评价该真菌对树木的致病性，将该真菌分别多次接种和单次接种于成年树木的幼苗和枝条。在这两种接种中，真菌从50%以上的接种枝条和幼苗中重新分离。在单次接种中，接种点处非导电边材的横向面积和从接种点扩展的变色的垂直长度的比例在接种处理和对照之间存在显著差异。在多次接种中，在检查的幼苗中未确认死亡。这些结果表明，R.蒙古栎能在边材上定殖，导致边材变色，并破坏接种点附近的液流。mongolica，虽然该真菌的致病性尚未得到证实。
In Korea, mass mortality of Quercus mongolica trees has become obvious since 2004. Raffaelea quercus-mongolicae is believed to be a causal fungus contributing the mortality. To evaluate the pathogenicity of the fungus to the trees, the fungus was multiple- and single-inoculated to the seedlings and twigs of the mature trees, respectively. In both the inoculations, the fungus was reisolated from more than 50% of inoculated twigs and seedlings. In the single inoculations, proportions of the transverse area of non-conductive sapwood at inoculation points and vertical lengths of discoloration expanded from the points were significantly different between the inoculation treatment and the control. In the multiple inoculations, no mortality was confirmed among the seedlings examined. These results showed that R. quercus-mongolicae can colonize sapwood, contribute to sapwood discoloration and disrupt sap flows around inoculation sites of Q. mongolica, although the pathogenicity of the fungus was not proven.