RCH1, a locus in Arabidopsis that confers resistance to the hemibiotrophic fungal pathogen Colletotrichum higginsianum

Molecular Plant-microbe Interactions : MPMI
Yoshihiro NarusakaKazuo Shinozaki

Abstract

When challenged with the crucifer pathogen Colletotrichum higginsianum, Arabidopsis thaliana ecotype Columbia (Col-0) was colonized by the fungus within 2 to 3 days, developing brown necrotic lesions surrounded by a yellow halo. Lesions spread from the inoculation site within 3 to 4 days, and subsequently continued to expand until they covered the entire leaf. Electron microscopy confirmed that C. higginsianum is a hemibiotroph on Arabidopsis, feeding initially on living cells as a biotroph before switching to a necrotrophic mode of growth. A collection of 37 ecotypes of Arabidopsis varied in their responses to infection by C. higginsianum. The ecotype Eil-0 was highly resistant, with symptoms limited to necrotic flecking and with only very limited fungal colonization. Analyses suggested that the hypersensitive response and reactive oxygen species may be important in this defense response. Expression analyses with cDNA microarrays indicated that the defense reaction depends primarily on the jasmonic acid- and ethylene-dependent signaling pathways and, to a lesser extent, on the salicylate-dependent pathway. Crosses between the Eil-0 and Col-0 ecotypes suggested that the resistance in Eil-0 was dominant and was conferred by a si...Continue Reading

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Citations

Jul 5, 2007·Antonie van Leeuwenhoek·E F RakotonirianaA M Corbisier
Nov 30, 2007·Plant & Cell Physiology·Hiroshi AbeMasatomo Kobayashi
Mar 31, 2006·Molecular Plant-microbe Interactions : MPMI·Chiyumi ShimadaYoshitaka Takano
Jan 10, 2009·Molecular Plant-microbe Interactions : MPMI·Aurélie HuserRichard O'Connell
Nov 29, 2007·Proceedings of the National Academy of Sciences of the United States of America·Ayako MiyaNaoto Shibuya
Aug 19, 2009·The Plant Journal : for Cell and Molecular Biology·Doris BirkerRichard O'Connell
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Nov 1, 2005·Molecular Plant Pathology·Yoshihiro NarusakaMasatomo Kobayashi
Jun 13, 2009·The Plant Journal : for Cell and Molecular Biology·Mari NarusakaYoshihiro Narusaka
Apr 28, 2009·The Plant Journal : for Cell and Molecular Biology·Hiroyuki TakaharaRichard O'Connell
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Oct 15, 2009·Plant Signaling & Behavior·Mari NarusakaYoshihiro Narusaka
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Jun 10, 2016·Current Opinion in Microbiology·Philipp H Fesel, Alga Zuccaro
Jun 15, 2016·Annual Review of Phytopathology·Tyr Wiesner-Hanks, Rebecca Nelson

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