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不同松树与松材线虫互作中超氧自由基差异与病变的关系(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2011年02期
Page:
25-30
Column:
研究论文
publishdate:
2011-03-28

Article Info:/Info

Title:
The relationship between difference of superoxide anion and lesion in the interaction of different varieties of pines and Bursaphelenchus xylophilus
Author(s):
HE Longxi WU Xiaoqin* YU Luzhen
Jiangsu Key Laboratory for Pest Prevention and Management of Invasive Specie, Nanjing Forestry University,Nanjing 210037,China
Keywords:
O-·2 SOD Pinus taeda P. massoniana P. thunbergii Bursaphelenchus xylophilus
Classification number :
S763
DOI:
10.3969/j.jssn.1000-2006.2011.02.005
Document Code:
A
Abstract:
To explore the relationship between dynamic changes of superoxide anion (O-·2) in the pine trees infected by Bursaphelenchus xylophilus and the host tissue lesions, O-·2, superoxide dismutase (SOD) and physiological changes in the interaction between Pinus taeda,P. massoniana,P. thunbergii and Bursaphelenchus xylophilus were studied. The results showed that growth rate of O-·2 content and value of SOD activity in three kinds of pine trees was P. taeda> P. massoniana>P.thunbergii. At the early stage of inoculation (after 4 hours of inoculation), it increased fast in the resistant pines. The damage of resistant pines was lighter than that of the susceptible pines; At the late stage of inoculation (after inoculation 72 h to 120 h hours),the content of O-·2 and value of SOD activity in three pines was P. taeda> P. massoniana>P.thunbergii,the development of physiological changes of P. taeda was slower than that of P.thunbergii and P. massoniana (P. massoniana slower than P.thunbergii),and the damage of that of P. taeda was lighter than P.thunbergii and P. massoniana. This indicated that the changes of O-·2 and SOD activity of in different resistance pines infected by Bursaphelenchus xylophilus were closely related to the host tissue lesions, superoxide may be important signal substances which mediated the resistant signal transduction in pines infected by Bursaphelenchus xylophilus.

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Last Update: 2011-04-13