Assessment of pine stands subjected to industrial pollution using ceratocystis laricicola

Nam Seok Cho, Natasha V. Pashenova, Tae Ho Choi, Shoji Ohga

研究成果: ジャーナルへの寄稿記事

抄録

A method for estimation of tree's condition on activity of defence response in phloem was checked in Pinus sylvestris L. stands located near Krasnoyarsk (Siberia, Russia). The length of necrosis caused by inoculation of phloem of living tree by Ceratocystis laricicola Redf. et Minter was used as the parameter being measured. The field experiments were carried out in two even-aged (about 60 years) pine stands that were approximately equal on structure, productivity, density and recreation loading, but differentiated on degree of industrial pollution. The two permanent sample plots (SP) were founded in the severely polluted stand. The other two SP were placed in the unpolluted pine forest. The amount of pine trees within each SP varied from 200 to 250. From 22 up to 37 pine-trees selected randomly within every SP were inoculated with C. laricicola mycelium (test 1) and its extract (test 2). One inoculation hole per one tree (diameter 7 mm) was made in stem at a height of 1.3 m. Application of the both agents caused necrosis in phloem around the place of inoculation. In the case of fungal inoculation (test 1), the average length of necrosis in the unpolluted forest exceeded significantly the same parameter in the polluted stand: 51.7-79.4mm and 39.4-41.3mm, correspondingly. The action of the fungal metabolites caused the opposite results: in the unpolluted stand the average size of necroses was smaller in comparison with this parameter in the polluted stands 44.5-15.3 mm and 57.9-61.8 mm. The reasons of this difference are discussed. The both agents (C. laricicola mycelium and its extract) were suitable to reveal the difference of tree's condition in polluted and unpolluted pine stands. The application of fungal extract is more preferable in comparison with fungal mycelium because of smaller variability of necrosis size. Besides, the application of extract allows controlling inoculum dose and excludes the dangerous of spreading infection in forests.

元の言語英語
ページ(範囲)395-398
ページ数4
ジャーナルJournal of the Faculty of Agriculture, Kyushu University
53
発行部数2
出版物ステータス出版済み - 10 1 2008

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Ceratocystis
necrosis
Necrosis
Phloem
Pinus
pollution
Mycelium
phloem
mycelium
extracts
Pinus sylvestris
Siberia
sampling
Recreation
Russia
testing
recreation
tree and stand measurements
coniferous forests
inoculum

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Agronomy and Crop Science

これを引用

Assessment of pine stands subjected to industrial pollution using ceratocystis laricicola. / Cho, Nam Seok; Pashenova, Natasha V.; Choi, Tae Ho; Ohga, Shoji.

:: Journal of the Faculty of Agriculture, Kyushu University, 巻 53, 番号 2, 01.10.2008, p. 395-398.

研究成果: ジャーナルへの寄稿記事

Cho, Nam Seok ; Pashenova, Natasha V. ; Choi, Tae Ho ; Ohga, Shoji. / Assessment of pine stands subjected to industrial pollution using ceratocystis laricicola. :: Journal of the Faculty of Agriculture, Kyushu University. 2008 ; 巻 53, 番号 2. pp. 395-398.
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