Histological Observations on the Responses of Pine Species, Pinus strobus and P. taeda, Resistant to Bursaphelenchus xylophilus Infection.
-
- YAMADA Toshihiro
- Forestry and Forest Products Research Institute (FFPRI)
-
- ITO Shin-ichiro
- Kansai Research Center
Bibliographic Information
- Other Title
-
- マツノザイセンチュウ感染に対する材線虫抵抗性マツ,テーダマツおよびストローブマツの反応の組織学的観察
- マツノザイセンチュウ感染に対する材線虫抵抗性マツ,テーダマツおよびストローブマツの反応の組織学的観察〔英文〕
- マツノザイセンチュウ カンセン ニ タイスル ザイセンチュウ テイコウセイ マ
Search this article
Abstract
Bursaphelenchus xylophilus was inoculated into the branches of wilt-resistant Pinus taeda and P. strobus, and wilt-susceptible P. thunbergii. The histology of inoculated pine branches was investigated. Nematode numbers increased in whole inoculated branches of P. thunbergii. Nematode numbers decreased in those of resistant species, except in proximity to the inoculation site of P. taeda. Histological changes were delayed in the cortex and phloem tissue and cambium of P. thunbergii inoculated branches. In resistant species, necrosis and destruction of cortex and phloem tissue and cambium (P. taeda) or occlusion of cortical resin canal (P. strobus) occurred near the inoculation site rapidly after nematode inoculation. Wound periderm was formed within 3 weeks and 5 weeks after inoculation in P. taeda and P. strobus, respectively. Wound periderm formation was observed only around the cortical resin canals in P. thunbergii. Necrosis of xylem parenchyma was conspicuous in P. thunbergii, but not in resistant species. These results suggest that responses of resistant species, wound periderm formation and occlusion of cortical resin canal, trapped the nematode within damaged tissue. It is also suggested that insensitivity of xylem parenchyma to nematode infection acts as a defensive factor.
Journal
-
- Japanese Journal of Phytopathology
-
Japanese Journal of Phytopathology 59 (6), 659-665, 1993
The Phytopathological Society of Japan
- Tweet
Details 詳細情報について
-
- CRID
- 1390001206403696128
-
- NII Article ID
- 110002736650
-
- NII Book ID
- AN0019269X
-
- ISSN
- 18820484
- 00319473
- http://id.crossref.org/issn/00319473
-
- NDL BIB ID
- 3869710
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed