@article{oai:ir.kagoshima-u.ac.jp:00002070,
 author = {竹本, 雅晴 and Takemoto, Masaharu and 戸田, 直人 and Toda, Naoto and 河野, 裕 and Kono, Hiroshi and 横山, 桂一郎 and Yokoyama, Kei-ichiro and 阿部, 恭久 and Abe, Yasuhisa and 田端, 雅進 and Tabata, Masanobu},
 journal = {鹿児島大学農学部演習林研究報告, Research bulletin of the Kagoshima University forests},
 month = {Mar},
 note = {The incidence of butt rot and the invasion of Perenniporia subacida, the pathogen of butt rot of Chamaecyparis obtusa (Japanese cypress, hinoki in Japanese), were studied at 30-yr-old, 38-yr-old, and 43-yr-old hinoki stands in Kagawa Prefecture, Japan. Butt rot was found in 53%, 28%, and 49% of the trees in the 30-yr-old, 38-yr-old, and 43-yr-old stands. Perenniporia subacida was frequently isolated from the decayed wood of roots and the tissues of white mycelial mats on the bark of roots. A somatic incompatibility test of isolates showed there were at least five genets of P. subacida and the fungus spread to neighboring trees by mycelial growth through root contacts. Wounds which caused decay were classified into the following 6 types: 1) mutual root contacts, 2) stones, 3) root-feeding of larvae of  Mimela costata, 4) small-size forwarder, 5) cracks of swelling, and 6) decayed absorbing root. Most wounds associated with butt rot were formed at the base of the stumps and in roots less than 36cm below ground level. These wounds were caused by the root-feeding of the chafer, root contacts, and stones., 30・38・43年生ヒノキ林内で発生しているヒノキ根株腐朽病について病原菌のジェネット構造や侵入口を調べ, 病原菌の感染と伝染について検討した｡キンイロアナタケによるヒノキ根株腐朽病の被害率は, 30・38・43年生ヒノキ林においてそれぞれ53％, 28％, 49％であった｡キンイロアナタケは根の腐朽部や樹皮上の白色菌糸体から頻繁に分離された｡分離菌株の対峙培養の結果, 38年生ヒノキ林で少なくとも５個のジェネットが見つかり, 病原菌は根系接触によって隣接木に栄養繁殖で広がっていた｡伐根の掘り取り調査の結果, 腐朽が原因となる傷は６つのタイプ(根系接触, 石レキ, 根切虫オオスジコガネの幼虫の食害, 林内作業車, 根の亀裂, 根腐れ) に分類された｡伐根につながる傷はほとんど地下36cm未満で発生し, 根系接触, 石レキ, オオスジコガネ幼虫の食害が関係していた。},
 pages = {71--77},
 title = {Infection and propagation of Perenniporia subacida in stands of Chamaecyparis obtusa (Japanese cypress)},
 volume = {37},
 year = {2010}
}