Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/50439
標題: A single locus leads to resistance of Arabidopsis thaliana to bacterial wilt caused by Ralstonia solanacearum through a hypersensitive-like response
作者: Ho, G.D.
楊長賢
Yang, C.H.
關鍵字: disease resistance;pseudomonas-solanacearum;xanthomonas-campestris;defense responses;plant defense;gene;pathogens;infection;tomato;rps2
Project: Phytopathology
期刊/報告no:: Phytopathology, Volume 89, Issue 8, Page(s) 673-678.
摘要: 
Strains of Ralstonia solanacearum have been shown to cause bacterial wilt in some, but not all, ecotypes of Arabidopsis thaliana. We demonstrate here that after inoculation of the leaves of resistant ecotype S96 with R. solanacearum strain Ps95 necrosis around the inoculation site rapidly appeared and no further symptoms developed in the plant. Leaves of susceptible ecotype N913 completely wilted 7 days after inoculation with Ps95, and symptoms spread systemically throughout the whole plant within 2 weeks after inoculation. These results suggest that the resistance of Arabidopsis S96 to R. solanacearum is due to a response similar to the hypersensitive response (HR) observed in other plant diseases. Northern blot analysis of the expression of defense-related genes, known to be differentially induced during the HR in Arabidopsis, indicated that pathogenesis-related protein PR-1, glutathione S-transferase (GST1), and Cu,Zn superoxide dismutase (SOD) mRNAs increased significantly in S96 leaves between 3 to 12 h after infiltration with Ps95. The induction of these genes in susceptible ecotype N913 by Ps95 was clearly delayed. Genetic analysis of crosses between resistant ecotype S96 and susceptible ecotype N913 indicated that resistance to Ps95 is due to a single dominant locus.
URI: http://hdl.handle.net/11455/50439
ISSN: 0031-949X
DOI: 10.1094/phyto.1999.89.8.673
Appears in Collections:生物科技學研究所

Show full item record
 

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.