Journal ArticleDOI
Recognition and Response in the Plant Immune System
TLDR
Transduction of recognition probably requires regulated protein degradation and results in massive changes in cellular homeostasis, including a programmed cell death known as the hypersensitive response that indicates a successful, if perhaps over-zealous, disease resistance response.Abstract:
Molecular communication between plants and potential pathogens determines the ultimate outcome of their interaction. The directed delivery of microbial molecules into and around the host cell, and the subsequent perception of these by the invaded plant tissue (or lack thereof), determines the difference between disease and disease resistance. In theory, any foreign molecule produced by an invading pathogen could act as an elicitor of the broad physiological and transcriptional re-programming indicative of a plant defense response. The diversity of elicitors recognized by plants seems to support this hypothesis. Additionally, these elicitors are often virulence factors from the pathogen recognized by the host. This recognition, though genetically as simple as a ligand-receptor interaction, may require additional host proteins that are the nominal targets of virulence factor action. Transduction of recognition probably requires regulated protein degradation and results in massive changes in cellular homeostasis, including a programmed cell death known as the hypersensitive response that indicates a successful, if perhaps over-zealous, disease resistance response.read more
Citations
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Journal ArticleDOI
Contrasting Mechanisms of Defense Against Biotrophic and Necrotrophic Pathogens
TL;DR: This review summarizes results from Arabidopsis-pathogen systems regarding the contributions of various defense responses to resistance to several biotrophic and necrotrophic pathogens.
Journal ArticleDOI
A Renaissance of Elicitors: Perception of Microbe-Associated Molecular Patterns and Danger Signals by Pattern-Recognition Receptors
Thomas Boller,Georg Felix +1 more
TL;DR: Current evidence indicates that MAMPs, DAMPs, and effectors are all perceived as danger signals and induce a stereotypic defense response, and the importance of MAMP/PRR signaling for plant immunity is highlighted.
Journal ArticleDOI
Perception of the bacterial PAMP EF-Tu by the receptor EFR restricts Agrobacterium-mediated transformation.
Cyril Zipfel,Gernot Kunze,Delphine Chinchilla,Anne Caniard,Jonathan D. G. Jones,Thomas Boller,Georg Felix +6 more
TL;DR: It is shown that flagellin and EF-Tu activate a common set of signaling events and defense responses but without clear synergistic effects, and that plant defense responses induced by PAMPs such as EF- Tu reduce transformation by Agrobacterium.
Journal ArticleDOI
Elicitor signal transduction leading to production of plant secondary metabolites.
TL;DR: Progress made on several aspects of elicitor signal transduction leading to production of plant secondary metabolites are summarized, including the integration of multiple signaling pathways into or by transcription factors, as well as the linkage of the above signal components in eliciting network through protein phosphorylation and dephosphorylation.
Journal ArticleDOI
The genome sequence of the rice blast fungus Magnaporthe grisea
Ralph A. Dean,Nicholas J. Talbot,Daniel J. Ebbole,Mark L. Farman,Thomas K. Mitchell,Marc J. Orbach,Michael R. Thon,Resham Kulkarni,Resham Kulkarni,Jin-Rong Xu,Huaqin Pan,Nick D. Read,Yong-Hwan Lee,Ignazio Carbone,Doug Brown,Yeonyee Oh,Nicole M. Donofrio,Jun Seop Jeong,Darren M. Soanes,Slavica Djonovic,Elena A. Kolomiets,Cathryn J. Rehmeyer,Weixi Li,Michael W. Harding,Soonok Kim,Marc-Henri Lebrun,Heidi U. Böhnert,Sean J. Coughlan,Jonathan Butler,Sarah E. Calvo,Li-Jun Ma,Robert Nicol,Seth Purcell,Chad Nusbaum,James E. Galagan,Bruce W. Birren +35 more
TL;DR: The draft sequence of the M. grisea genome is reported, reflecting the clonal nature of this fungus imposed by widespread rice cultivation and analysis of the gene set provides an insight into the adaptations required by a fungus to cause disease.
References
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Journal ArticleDOI
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Stephen A. Goff,Darrell O. Ricke,Tien-Hung Lan,Gernot G. Presting,Ronglin Wang,Molly Dunn,Jane Glazebrook,Allen Sessions,Paul Oeller,Hemant Varma,David Hadley,Don Hutchison,Christopher M. Martin,Fumiaki Katagiri,B. Markus Lange,Todd Moughamer,Yu Xia,Paul Budworth,Jingping Zhong,Trini Miguel,Uta Paszkowski,Shiping Zhang,Michelle Colbert,Wei-lin Sun,Lili Chen,Bret Cooper,Sylvia Park,Todd Charles Wood,Long Mao,Peter H. Quail,Rod A. Wing,Ralph A. Dean,Yeisoo Yu,Andrey Zharkikh,Richard Shen,Sudhir Sahasrabudhe,Alun Thomas,Rob Cannings,Alexander Gutin,Dmitry Pruss,Julia Reid,Sean V. Tavtigian,J.T. Mitchell,Glenn Eldredge,Terri Scholl,Rose Mary Miller,Satish Bhatnagar,Nils Adey,Todd Rubano,Nadeem Tusneem,Rosann Robinson,Jane Feldhaus,Teresita Macalma,Arnold R. Oliphant,Steven P. Briggs +54 more
TL;DR: A draft sequence of the rice genome for the most widely cultivated subspecies in China, Oryza sativa L. ssp.indica, by whole-genome shotgun sequencing is produced, with a large proportion of rice genes with no recognizable homologs due to a gradient in the GC content of rice coding sequences.
Journal ArticleDOI
Plant pathogens and integrated defence responses to infection.
TL;DR: The current knowledge of recognition-dependent disease resistance in plants is reviewed, and a few crucial concepts are included to compare and contrast plant innate immunity with that more commonly associated with animals.
Journal ArticleDOI
H2O2 from the oxidative burst orchestrates the plant hypersensitive disease resistance response
TL;DR: It is reported here that H2O2 from this oxidative burst not only drives the cross-linking of cell wall structural proteins, but also functions as a local trigger of programmed death in challenged cells and as a diffusible signal for the induction in adjacent cells of genes encoding cellular protectants.
Journal ArticleDOI
Arabidopsis transcription factors: genome-wide comparative analysis among eukaryotes.
José Luis Riechmann,Jacqueline E. Heard,George M. Martin,T. Lynne Reuber,Cai-Zhong Jiang,James S. Keddie,Luc Adam,Omaira Pineda,Oliver J. Ratcliffe,Raymond Samaha,Robert A. Creelman,Marsha Pilgrim,Pierre Broun,James Zhang,D. Ghandehari,Bradley K. Sherman,Guo-Liang Yu +16 more
TL;DR: The completion of the Arabidopsis thaliana genome sequence allows a comparative analysis of transcriptional regulators across the three eukaryotic kingdoms and reveals the evolutionary generation of diversity in the regulation of transcription.
Journal ArticleDOI
MAP kinase signalling cascade in Arabidopsis innate immunity
Tsuneaki Asai,Guillaume Tena,Joulia Plotnikova,Matthew R. Willmann,Wan-Ling Chiu,Lourdes Gómez-Gómez,Thomas Boller,Frederick M. Ausubel,Jen Sheen +8 more
TL;DR: An Arabidopsis thaliana leaf cell system based on the induction of early-defence gene transcription by flagellin, a highly conserved component of bacterial flagella that functions as a PAMP in plants and mammals is developed, suggesting that signalling events initiated by diverse pathogens converge into a conserved MAPK cascade.