Ethylene-insensitive tobacco lacks nonhost resistance against soil-borne fungi
AUTOR(ES)
Knoester, Marga
FONTE
The National Academy of Sciences
RESUMO
Enhanced ethylene production is an early response of plants to pathogen attack and has been associated with both resistance and susceptibility to disease. Tobacco plants were transformed with the mutant etr1–1 gene from Arabidopsis, conferring dominant ethylene insensitivity. Besides lacking known ethylene responses, these transformants (Tetr) did not slow growth when contacting neighboring plants, hardly expressed defense-related basic pathogenesis-related proteins, and developed spontaneous stem browning. Whereas hypersensitive resistance to tobacco mosaic virus was unimpaired, Tetr plants had lost nonhost resistance against normally nonpathogenic soil-borne fungi.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=19216Documentos Relacionados
- Root Formation in Ethylene-Insensitive Plants1
- Selection of ornamental peppers elite lines for ethylene-insensitive
- Requirement of Functional Ethylene-Insensitive 2 Gene for Efficient Resistance of Arabidopsis to Infection by Botrytis cinerea1
- Isolation of Ethylene-Insensitive Soybean Mutants That Are Altered in Pathogen Susceptibility and Gene-for-Gene Disease Resistance1
- Five components of the ethylene-response pathway identified in a screen for weak ethylene-insensitive mutants in Arabidopsis