Several downy mildew resistance genes in Arabidopsis require signaling via a homologue of yeast SGT1

M. Tör, P. Gordon, A. Cuzick, A. Yemm and E.B. Holub
Additional contact information
M. Tör: Species Level Resistance Group, Horticulture Research International, Wellesbourne, Warwick, CV35 9EF, United Kingdom *
P. Gordon: Species Level Resistance Group, Horticulture Research International, Wellesbourne, Warwick, CV35 9EF, United Kingdom *
A. Cuzick: Species Level Resistance Group, Horticulture Research International, Wellesbourne, Warwick, CV35 9EF, United Kingdom *
A. Yemm: Species Level Resistance Group, Horticulture Research International, Wellesbourne, Warwick, CV35 9EF, United Kingdom *
E.B. Holub: Species Level Resistance Group, Horticulture Research International, Wellesbourne, Warwick, CV35 9EF, United Kingdom *

Plant Protection Science, 2002, vol. 38, issue SI2-6thConfEFPP, 510-512

Abstract: A fast neutron mutant in Arabidopsis (Columbia) was identified that exhibits enhanced downy mildew (edm1) susceptibility to several Peronospora parasitica isolates, including the RPP7-diagnostic isolate Hiks1. The mutation was mapped to chr.4 and physically characterised as a 35kb deletion spanning seven genes. One of these genes restored wild-type resistance to all of the P. parasitica isolates. This gene (AtSGT1b) encodes a predicted protein that is orthologous to yeast SGT1, originally described as a key regulatory protein in centromere function and ubiquitin-mediated proteolysis. AtSGT1b contains three tatratrico-peptide repeats at the N terminus followed by a bipartite "CS" (CHORD containing Sgt) domain and an SGT specific (SGTS) domain at the carboxyl terminus. Altered expression of this gene is being investigated in Arabidopsis and Brassica olarecea to determine its potential use for crop improvement.

Keywords: Brassica; downy mildew resistance; defence signalling; SGT1 (search for similar items in EconPapers)
Date: 2002
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://pps.agriculturejournals.cz/doi/10.17221/10540-PPS.html (text/html)
http://pps.agriculturejournals.cz/doi/10.17221/10540-PPS.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:38:y:2002:i:si2-6thconfefpp:id:10540-pps

DOI: 10.17221/10540-PPS

Access Statistics for this article

Plant Protection Science is currently edited by Ing. Eva Karská, (Executive Editor PPS)

More articles in Plant Protection Science from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().