Germination and Appressorium Development of Phyllosticta ampelicida Pycnidiospores

Mycologia ◽  
1998 ◽  
Vol 90 (2) ◽  
pp. 258 ◽  
Author(s):  
B. D. Shaw ◽  
KerChung Kuo ◽  
H. C. Hoch
Keyword(s):  
Phyllosticta Ampelicida ◽  
Appressorium Development

Scanning electron and light microscopy of appressorium development in Piptocephalis unispora (Mucorales)

1975 ◽  
Vol 103 (1) ◽  
pp. 293-296 ◽  
Author(s):  
P. Jefries ◽  
T. W. K. Young
Keyword(s):  
Light Microscopy ◽  
Electron And Light Microscopy ◽  
Appressorium Development ◽  
Scanning Electron

scholarly journals Homeobox Transcription Factors Are Required for Conidiation and Appressorium Development in the Rice Blast Fungus Magnaporthe oryzae

PLoS Genetics ◽  
2009 ◽  
Vol 5 (12) ◽  
pp. e1000757 ◽  
Author(s):  
Seryun Kim ◽  
Sook-Young Park ◽  
Kyoung Su Kim ◽  
Hee-Sool Rho ◽  
Myoung-Hwan Chi ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Magnaporthe Oryzae ◽  
Rice Blast ◽  
Rice Blast Fungus ◽  
Blast Fungus ◽  
Appressorium Development ◽  
Homeobox Transcription Factors

scholarly journals Regulation of appressorium development in pathogenic fungi

2015 ◽  
Vol 26 ◽  
pp. 8-13 ◽  
Author(s):  
Lauren S Ryder ◽  
Nicholas J Talbot
Keyword(s):  
Pathogenic Fungi ◽  
Appressorium Development

scholarly journals Sho1 and Msb2-Related Proteins Regulate Appressorium Development in the Smut Fungus Ustilago maydis

2010 ◽  
Vol 22 (6) ◽  
pp. 2085-2101 ◽  
Author(s):  
Daniel Lanver ◽  
Artemio Mendoza-Mendoza ◽  
Andreas Brachmann ◽  
Regine Kahmann
Keyword(s):  
Ustilago Maydis ◽  
Smut Fungus ◽  
Related Proteins ◽  
Appressorium Development

scholarly journals Genome-wide Transcriptional Profiling of Appressorium Development by the Rice Blast Fungus Magnaporthe oryzae

2012 ◽  
Vol 8 (2) ◽  
pp. e1002514 ◽  
Author(s):  
Darren M. Soanes ◽  
Apratim Chakrabarti ◽  
Konrad H. Paszkiewicz ◽  
Angus L. Dawe ◽  
Nicholas J. Talbot
Keyword(s):  
Magnaporthe Oryzae ◽  
Rice Blast ◽  
Transcriptional Profiling ◽  
Rice Blast Fungus ◽  
Blast Fungus ◽  
Genome Wide ◽  
Appressorium Development

scholarly journals Magnaporthe oryzae Auxiliary Activity Protein MoAa91 Functions as Chitin-Binding Protein To Induce Appressorium Formation on Artificial Inductive Surfaces and Suppress Plant Immunity

mBio ◽  
2020 ◽  
Vol 11 (2) ◽  
Author(s):  
Ying Li ◽  
Xinyu Liu ◽  
Muxing Liu ◽  
Yang Wang ◽  
Yibin Zou ◽  
...  
Keyword(s):  
Magnaporthe Oryzae ◽  
Binding Protein ◽  
Plant Immunity ◽  
G Protein Signaling ◽  
Protein Signaling ◽  
Appressorium Formation ◽  
Protein Precursor ◽  
Content Type ◽  
Surface Recognition ◽  
Appressorium Development

ABSTRACT The appressoria that are generated by the rice blast fungus Magnaporthe oryzae in response to surface cues are important for successful colonization. Previous work showed that regulators of G-protein signaling (RGS) and RGS-like proteins play critical roles in appressorium formation. However, the mechanisms by which these proteins orchestrate surface recognition for appressorium induction remain unclear. Here, we performed comparative transcriptomic studies of ΔMorgs mutant and wild-type strains and found that M. oryzae Aa91 (MoAa91), a homolog of the auxiliary activity family 9 protein (Aa9), was required for surface recognition of M. oryzae. We found that MoAA91 was regulated by the MoMsn2 transcription factor and that its disruption resulted in defects in both appressorium formation on the artificial inductive surface and full virulence of the pathogen. We further showed that MoAa91 was secreted into the apoplast space and was capable of competing with the immune receptor chitin elicitor-binding protein precursor (CEBiP) for chitin binding, thereby suppressing chitin-induced plant immune responses. In summary, we have found that MoAa91 is a novel signaling molecule regulated by RGS and RGS-like proteins and that MoAa91 not only governs appressorium development and virulence but also functions as an effector to suppress host immunity. IMPORTANCE The rice blast fungus Magnaporthe oryzae generates infection structure appressoria in response to surface cues largely due to functions of signaling molecules, including G-proteins, regulators of G-protein signaling (RGS), mitogen-activated protein (MAP) kinase pathways, cAMP signaling, and TOR signaling pathways. M. oryzae encodes eight RGS and RGS-like proteins (MoRgs1 to MoRgs8), and MoRgs1, MoRgs3, MoRgs4, and MoRgs7 were found to be particularly important in appressorium development. To explore the mechanisms by which these proteins regulate appressorium development, we have performed a comparative in planta transcriptomic study and identified an auxiliary activity family 9 protein (Aa9) homolog that we named MoAa91. We showed that MoAa91 was secreted from appressoria and that the recombinant MoAa91 could compete with a chitin elicitor-binding protein precursor (CEBiP) for chitin binding, thereby suppressing chitin-induced plant immunity. By identifying MoAa91 as a novel signaling molecule functioning in appressorium development and an effector in suppressing host immunity, our studies revealed a novel mechanism by which RGS and RGS-like proteins regulate pathogen-host interactions.

Structural and Chemical Changes Among the Rust Fungi During Appressorium Development

1987 ◽  
Vol 25 (1) ◽  
pp. 231-247 ◽  
Author(s):  
H C Hoch ◽  
R C Staples
Keyword(s):  
Rust Fungi ◽  
Chemical Changes ◽  
Appressorium Development

Endoplasmic reticulum‐associated degradation mediated by MoHrd1 and MoDer1 is pivotal for appressorium development and pathogenicity of Magnaporthe oryzae

2020 ◽  
Vol 22 (12) ◽  
pp. 4953-4973 ◽  
Author(s):  
Wei Tang ◽  
Haolang Jiang ◽  
Osakina Aron ◽  
Min Wang ◽  
Xueyu Wang ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Magnaporthe Oryzae ◽  
Endoplasmic Reticulum Associated Degradation ◽  
Appressorium Development
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