scholarly journals The cell death factor, cell wall elicitor of rice blast fungus (Magnaporthe grisea) causes metabolic alterations including GABA shunt in rice cultured cells

2008 ◽  
Vol 3 (11) ◽  
pp. 945-953 ◽  
Author(s):  
Hideyuki Takahashi ◽  
Hideo Matsumura ◽  
Maki Kawai-Yamada ◽  
Hirofumi Uchimiya
Keyword(s):  
Cell Death ◽  
Cell Wall ◽  
Rice Blast ◽  
Magnaporthe Grisea ◽  
Cultured Cells ◽  
Rice Blast Fungus ◽  
Gaba Shunt ◽  
Metabolic Alterations ◽  
Blast Fungus

scholarly journals Identification of Rice Blast Fungal Elicitor-Responsive Genes by Differential Display Analysis

2000 ◽  
Vol 13 (4) ◽  
pp. 470-474 ◽  
Author(s):  
Cha Young Kim ◽  
Sung-Ho Lee ◽  
Hyeong Cheol Park ◽  
Chang Gyu Bae ◽  
Yong Hwa Cheong ◽  
...  
Keyword(s):  
Differential Display ◽  
Rice Blast ◽  
Magnaporthe Grisea ◽  
Cultured Cells ◽  
Rice Blast Fungus ◽  
Lipid Binding ◽  
Molecular Probes ◽  
Fungal Elicitor ◽  
Cdna Clones ◽  
Blast Fungus

In order to study molecular interactions that occur between rice and rice blast fungus upon infection, we isolated fungal elicitor-responsive genes from rice (Oryza sa-tiva cv. Milyang 117) suspension-cultured cells treated with fungal elicitor prepared from the rice blast fungus (Magnaporthe grisea) employing a method that combined mRNA differential display and cDNA library screening. Data base searches with the isolated cDNA clones revealed that the OsERG1 and OsERG2 cDNAs share significant similarities with the mammalian Ca2+-dependent lipid binding (C2) domains. The OsCPX1 cDNA is highly homologous to peroxidases. The OsHin1 cDNA exhibits homology to the tobacco hin1 gene, whose expression is induced by avirulent pathogens. The OsLPL1 and OsMEK1 cDNAs share homologies with lysophospholipases and serine/threonine mitogen-activated protein (MAP) kinase kinases, respectively. The OsWRKY1 and OsEREBP1 cDNAs are homologous to transcription factors, such as the WRKY protein family and the AP2/EREBP family, respectively. Transcripts of the OsERG1, OsHin1, and OsMEK1 genes were specifically elevated only in response to the avirulent race KJ301 of the rice blast fungus. Our study yielded a number of elicitor-responsive genes that will not only provide molecular probes, but also contribute to our understanding of host defense mechanisms against the rice blast fungus.

Synthesis and Biotransformation of Plausible Biosynthetic Intermediates of Salicylaldehyde-Type Phytotoxins of Rice Blast Fungus, Magnaporthe grisea

2011 ◽  
Vol 2011 (31) ◽  
pp. 6276-6280 ◽  
Author(s):  
Koji Tanaka ◽  
Ayaka Sasaki ◽  
Hai-Qun Cao ◽  
Teiko Yamada ◽  
Masahiro Igarashi ◽  
...  
Keyword(s):  
Rice Blast ◽  
Magnaporthe Grisea ◽  
Rice Blast Fungus ◽  
Blast Fungus

Proteome analysis of rice blast fungus (Magnaporthe grisea) proteome during appressorium formation

PROTEOMICS ◽  
2004 ◽  
Vol 4 (11) ◽  
pp. 3579-3587 ◽  
Author(s):  
Sun Tae Kim ◽  
Seok Yu ◽  
Sang Gon Kim ◽  
Han Ju Kim ◽  
Sun Young Kang ◽  
...  
Keyword(s):  
Rice Blast ◽  
Magnaporthe Grisea ◽  
Proteome Analysis ◽  
Rice Blast Fungus ◽  
Appressorium Formation ◽  
Blast Fungus

scholarly journals The Ambivalence of the Barley Mlo Locus: Mutations Conferring Resistance Against Powdery Mildew (Blumeria graminis f. sp. hordei) Enhance Susceptibility to the Rice Blast Fungus Magnaporthe grisea

1999 ◽  
Vol 12 (6) ◽  
pp. 508-514 ◽  
Author(s):  
Birgit Jarosch ◽  
Karl-Heinz Kogel ◽  
Ulrich Schaffrath
Keyword(s):  
Powdery Mildew ◽  
Rice Blast ◽  
Magnaporthe Grisea ◽  
Durable Resistance ◽  
Rice Blast Fungus ◽  
Blumeria Graminis ◽  
Negative Regulator ◽  
Powdery Mildew Fungus ◽  
Mesophyll Cells ◽  
Blast Fungus

Recessive alleles of the barley Mlo locus confer non-race-specific resistance against the powdery mildew fungus Blumeria graminis f. sp. hordei (Bgh). Recently the Mlo gene has been isolated and it was suggested that the Mlo product is a negative regulator of cell death. Thus, loss of function can precondition cells to a higher responsiveness for the onset of multiple defense functions. Here, we document an enhanced susceptibility of barley mlo mutants to the rice blast fungus Magnaporthe grisea. The disease phenotype is independent of the barley cultivar in which the mlo allele has been introgressed and occurs in equal amounts in barley backcross lines of cv. Ingrid carrying the mlo-1, mlo-3, or mlo-5 allele. Ror genes, which are required for the full expression of mlo resistance in barley against Bgh, do not affect the specific mlo-mediated phenotype observed after M. grisea infection. Formation of an effective papilla restricts blast development in epidermal cells of Mlo plants. In contrast, papillae are mostly penetrated in mlo mutants and, as a consequence, the fungus spreads into adjacent mesophyll cells. Both wild-type plants and mlo mutants did not differ in perception of a purified elicitor derived from M. grisea. Thus, we hypothesize that a functional Mlo protein is a prerequisite for penetration resistance of barley to fungal pathogens like M. grisea. The benefit of mlo alleles for durable resistance in barley and a proposed role of mlo-type-mutations in rice are discussed.

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