Ethylene-insensitive tobacco lacks nonhost resistance against soil-borne fungi.

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.

[1]  Elliot M. Meyerowitz,et al.  A dominant mutant receptor from Arabidopsis confers ethylene insensitivity in heterologous plants , 1997, Nature Biotechnology.

[2]  T. Bisseling,et al.  Ethylene provides positional information on cortical cell division but is not involved in Nod factor-induced root hair tip growth in Rhizobium-legume interaction. , 1997, Development.

[3]  D. Cook,et al.  A Legume Ethylene-Insensitive Mutant Hyperinfected by Its Rhizobial Symbiont , 1997, Science.

[4]  M. Hansson,et al.  Rhodobacter sphaeroides bchl and bchD encoding two subunits of magnesium chelatase (Accession no. AF017642). , 1997 .

[5]  Jonathan D. G. Jones,et al.  Resistance gene-dependent plant defense responses. , 1996, The Plant cell.

[6]  G. Eric Schaller,et al.  Ethylene-Binding Sites Generated in Yeast Expressing the Arabidopsis ETR1 Gene , 1995, Science.

[7]  E. Meyerowitz,et al.  Ethylene insensitivity conferred by Arabidopsis ERS gene. , 1995, Science.

[8]  E. Meyerowitz,et al.  The ethylene hormone response in Arabidopsis: a eukaryotic two-component signaling system. , 1995, Proceedings of the National Academy of Sciences of the United States of America.

[9]  Ecker.  The ethylene signal transduction pathway in plants , 1995, Science.

[10]  A. Stintzi,et al.  Pathogenesis-Related PR-1 Proteins Are Antifungal (Isolation and Characterization of Three 14-Kilodalton Proteins of Tomato and of a Basic PR-1 of Tobacco with Inhibitory Activity against Phytophthora infestans) , 1995, Plant physiology.

[11]  R. Goodman,et al.  The hypersensitive reaction in plants to pathogens: a resistance phenomenon. , 1994 .

[12]  E. Meyerowitz,et al.  Arabidopsis ethylene-response gene ETR1: similarity of product to two-component regulators. , 1993, Science.

[13]  T. Larue,et al.  Exogenous Ethylene Inhibits Nodulation of Pisum sativum L. cv Sparkle. , 1992, Plant physiology.

[14]  C. M. Karssen,et al.  Progress in Plant Growth Regulation , 1992, Current Plant Science and Biotechnology in Agriculture.

[15]  C. Woloshuk,et al.  Pathogen-induced proteins with inhibitory activity toward Phytophthora infestans. , 1991, The Plant cell.

[16]  R. Meuwissen,et al.  Constitutive expression of pathogenesis-related proteins PR-1, GRP, and PR-S in tobacco has no effect on virus infection. , 1989, The Plant cell.

[17]  M. Estelle,et al.  Insensitivity to Ethylene Conferred by a Dominant Mutation in Arabidopsis thaliana , 1988, Science.

[18]  L. C. Loon,et al.  cDNA cloning of six mRNAs induced by TMV infection of tobacco and a characterization of their translation products , 1986, The EMBO journal.

[19]  L. C. van Loon,et al.  Molecular characterization of messenger RNAs for ‘pathogenesis‐related’ proteins 1a, 1b and 1c, induced by TMV infection of tobacco , 1986, The EMBO journal.

[20]  E. Nester,et al.  Plant-Microbe Interactions: Molecular and Genetic Perspectives , 1984 .

[21]  L. C. Loon,et al.  The relationship between stimulated ethylene production and symptom expression in virus-infected tobacco leaves , 1983 .

[22]  J. A. Bailey,et al.  The Dynamics of host defence , 1983 .

[23]  L. C. Loon,et al.  Regulation of Ethylene Biosynthesis in Virus-Infected Tobacco Leaves : II. TIME COURSE OF LEVELS OF INTERMEDIATES AND IN VIVO CONVERSION RATES. , 1982 .

[24]  L. C. Loon.  Induction by 2-chloroethylphosphonic acid of viral-like lesions, associated proteins, and systemic resistance in tobacco , 1977 .

[25]  F. B. Abeles,et al.  Ethylene in Plant Biology , 2022 .

[26]  F. F. Hendrix,et al.  Pythiums as Plant Pathogens , 1973 .

[27]  V. Georgiev.  Virology , 1955, Nature.

[28]  A. Galston.  Plant Physiology , 1967, Nature.