Isolation of ethylene-insensitive soybean mutants that are altered in pathogen susceptibility and gene-for-gene disease resistance
Reads0
Chats0
TLDR
The results suggest that reduced ethylene sensitivity can be beneficial against some pathogens but deleterious to resistance against other pathogens, and two new genetic loci were identified, Etr1 and Etr2.Abstract:
Plants commonly respond to pathogen infection by increasing ethylene production, but it is not clear if this ethylene does more to promote disease susceptibility or disease resistance. Ethylene production and/or responsiveness can be altered by genetic manipulation. The present study used mutagenesis to identify soybean ( Glycine max L. Merr.) lines with reduced sensitivity to ethylene. Two new genetic loci were identified, Etr1 and Etr2 . Mutants were compared with isogenic wild-type parents for their response to different soybean pathogens. Plant lines with reduced ethylene sensitivity developed similar or less-severe disease symptoms in response to virulent Pseudomonas syringae pv glycinea and Phytophthora sojae , but some of the mutants developed similar or more-severe symptoms in response to Septoria glycines and Rhizoctonia solani . Gene-for-gene resistance against P. syringae expressing avrRpt2 remained effective, but Rps1-k -mediated resistance against P. sojae races 4 and 7 was disrupted in the strong ethylene-insensitive etr1-1 mutant. Rps1-k -mediated resistance against P. sojae race 1 remained effective, suggesting that the Rps1-k locus may encode more than one gene for disease resistance. Overall, our results suggest that reduced ethylene sensitivity can be beneficial against some pathogens but deleterious to resistance against other pathogens.read more
Citations
More filters
Journal ArticleDOI
Ethylene biosynthesis and signaling networks.
TL;DR: The plant hormone ethylene is involved in many aspects of the plant life cycle, including seed germination, root hair development, root nodulation, flower senescence, and more.
Journal ArticleDOI
Cross talk between signaling pathways in pathogen defense
TL;DR: Plant defense in response to microbial attack is regulated through a complex network of signaling pathways that involve three signaling molecules: salicylic acid,jasmonic acid and ethylene.
Journal ArticleDOI
Ethylene: a gaseous signal molecule in plants.
Anthony B. Bleecker,Hans Kende +1 more
TL;DR: Biotechnological modifications of ethylene synthesis and of sensitivity to ethylene are promising methods to prevent spoilage of agricultural products such as fruits, whose ripening is induced by ethylene.
Journal ArticleDOI
ETHYLENE RESPONSE FACTOR1 Integrates Signals from Ethylene and Jasmonate Pathways in Plant Defense
TL;DR: The results suggest that ERF1 acts downstream of the intersection between ethylene and jasmonate pathways and suggest that this transcription factor is a key element in the integration of both signals for the regulation of defense response genes.
Journal ArticleDOI
Bacterial Volatiles Induce Systemic Resistance in Arabidopsis
Choong-Min Ryu,Mohamed A. Farag,Chia Hui Hu,Munagala S. Reddy,Joseph W. Kloepper,Paul W. Paré +5 more
TL;DR: New insight is provided into the role of bacteria VOCs as initiators of defense responses in plants and evidence is provided that the signaling pathway activated by volatiles from GB03 is dependent on ethylene, albeit independent of the salicylic acid or jasmonic acid signaling pathways.
References
More filters
Journal ArticleDOI
Determinations of total carotenoids and chlorophylls a and b of leaf extracts in different solvents
TL;DR: Pfister et al. as mentioned in this paper used a t.1.c. method (Lichtenthaler 8t Pfister, 1978) that permits a distinct separation of the two chlorophylls and also the major carotenoids using light petroleum (b.p. 40-6O0C)/dioxane/propan-2-ol (7 :3 : 1, by vol.) as a developing solvent.
Book
Ethylene in plant biology
TL;DR: This book discusses Ethylene Analysis and Properties of the Gas, the Role of Ethylene in Agriculture, and Roles and Physiological Effects ofEthylene in Plant Physiology: Dormancy, Growth and Development.
Ethylene in Plant Biology
TL;DR: This book discusses Ethylene Analysis and Properties of the Gas, the Role of Ethylene in Agriculture, and Roles and Physiological Effects ofEthylene in Plant Physiology: Dormancy, Growth and Development.
Book
Basic plant pathology methods
TL;DR: Basic plant pathology methods, Basic Plant pathology methods , مرکز فناوری اطلاعات و اصاع رسانی, کδاوρزی
Journal ArticleDOI
A Novel Signaling Pathway Controlling Induced Systemic Resistance in Arabidopsis
Corné M. J. Pieterse,Saskia C. M. Van Wees,Johan A. Van Pelt,M. Knoester,Ramon G.W. Laan,Han Gerrits,Peter Weisbeek,Leendert C. van Loon +7 more
TL;DR: Evidence is provided that the processes downstream of NPR1 in the ISR pathway are divergent from those in the SAR pathway, indicating that NPR1 differentially regulates defense responses, depending on the signals that are elicited during induction of resistance.