Cyclic AMP Restores Appressorium Formation Inhibited by Polyamines in Magnaporthe grisea
نویسندگان
چکیده
منابع مشابه
cDNA Subtractive Cloning of Genes Expressed during Early Stage of Appressorium Formation by Magnaporthe grisea.
The conidial germ tube of the fungus Magnaporthe grisea differentiates an infection-specific structure, an appressorium, for penetration into the host plant. Formation of the appressorium is also observed on synthetic solid substrata such as polycarbonate. We found that a plant lectin, concanavalin A, specifically suppressed the appressorium formation without affecting the germling adhesion if ...
متن کاملEarly expression of the calmodulin gene, which precedes appressorium formation in Magnaporthe grisea, is inhibited by self-inhibitors and requires surface attachment.
Fungal conidia contain chemicals that inhibit germination and appressorium formation until they are well dispersed in a favorable environment. Recently, such self-inhibitors were found to be present on the conidia of Magnaporthe grisea, and plant surface waxes were found to relieve this self-inhibition. To determine whether the self-inhibitors suppress the expression of early genes involved in ...
متن کاملThe molecular biology of appressorium turgor generation by the rice blast fungus Magnaporthe grisea.
The rice blast fungus Magnaporthe grisea develops specialized infection structures known as appressoria, which develop enormous turgor pressure to bring about plant infection. Turgor is generated by accumulation of compatible solutes, including glycerol, which is synthesized in large quantities in the appressorium. Glycogen, trehalose and lipids represent the most abundant storage products in M...
متن کاملMstu1, an APSES transcription factor, is required for appressorium-mediated infection in Magnaporthe grisea.
The APSES protein family includes important transcriptional regulators of morphological processes in ascomycetes. We identified a deletion mutant of the APSES protein Mstu1 in Magnaporthe grisea that showed reduced conidiation and mycelial growth. Mstu1 formed a number of appressoria comparable to the wild type, although appressorium formation was delayed. In M. grisea, rapid transfer of conidi...
متن کاملThe Adenylate Cyclase Gene MACI of Magnaporthe grisea Controls Appressorium Formation and Other Aspects of Growth and Development
Magnaporthe grisea, the causal agent of rice blast disease, differentiates a specialized infection structure called an appressorium that is crucial for host plant penetration. Previously, it was found that cAMP regulates appressorium formation. To further understand the cellular mechanisms involved in appressorium formation, we have cloned a gene (MACl) encoding adenylate cyclase, a membrane-bo...
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ژورنال
عنوان ژورنال: Phytopathology®
سال: 1998
ISSN: 0031-949X,1943-7684
DOI: 10.1094/phyto.1998.88.1.58