Nonhost resistance to Magnaporthe oryzae in Arabidopsis thaliana.
Rice blast, caused by Magnaporthe oryzae, is a devastating disease of rice (Oryza sativa). The mechanisms involved in resistance of rice to blast have been studied extensively and the rice--M. oryzae pathosystem has become a model for plant--microbe interaction studies. However, the mechanisms involved in nonhost resistance (NHR) of other plants to rice blast are still poorly understood. We have recently demonstrated that AGB1 and PMR5 contribute to PEN2-mediated preinvasion resistance to M. oryzae in Arabidopsis thaliana, suggesting a complex genetic network regulating the resistance. To determine whether other defense factors: RAR1, SGT1, and NHO1, affected the A. thaliana-M. oryzae interactions, double mutants were generated between pen2 and these defense-related mutants. All these double mutants exhibited a level of penetration resistance similar to that of the pen2 mutant, suggesting that none of these mutants significantly compromised resistance to M. oryzae in a pen2 background.
Maeda
Kana
K
Department of Bioscience, Fukui Prefectural University, Fukui, Japan.
Houjyou
Yasunari
Y
Komatsu
Takuma
T
Hori
Hiroki
H
Kodaira
Takahiro
T
Ishikawa
Atsushi
A
Mol Plant Microbe Interact. 2005 May;18(5):397-404
15915638
Annu Rev Plant Biol. 2009;60:139-64
19014346
Plant Cell. 2002 May;14(5):993-1003
12034892
Plant Cell. 2002 May;14(5):1005-15
12034893
Proc Natl Acad Sci U S A. 2002 Aug 6;99(16):10865-9
12119413
Mol Plant Microbe Interact. 2009 Nov;22(11):1331-40
19810803
Plant Physiol. 2005 Aug;138(4):2155-64
16040663
Cell. 2006 Feb 24;124(4):803-14
16497589
Science. 2005 Nov 18;310(5751):1180-3
16293760
Nature. 2006 Nov 16;444(7117):323-9
17108957
Proc Natl Acad Sci U S A. 2003 Mar 18;100(6):3519-24
12626746
Plant Cell. 2001 Feb;13(2):437-47
11226196
EMBO J. 2007 Oct 17;26(20):4293-301
17853890
Science. 2002 Mar 15;295(5562):2073-6
11847307
Science. 2005 Aug 5;309(5736):929-32
15976272
Plant Cell. 2007 Dec;19(12):4035-45
18156216
Proc Natl Acad Sci U S A. 2005 Sep 6;102(36):12990-5
16123135