Odoriferous substances of the mycelial fungus Ashbya gossypii

1991 ◽  
Vol 27 (3) ◽  
pp. 372-372
Author(s):  
P. S. Bugorskii ◽  
E. F. Semenova
Keyword(s):  
Ashbya Gossypii ◽  
Mycelial Fungus ◽  
Odoriferous Substances

scholarly journals A Ras-like GTPase Is Involved in Hyphal Growth Guidance in the Filamentous Fungus Ashbya gossypii

2004 ◽  
Vol 15 (10) ◽  
pp. 4622-4632 ◽  
Author(s):  
Yasmina Bauer ◽  
Philipp Knechtle ◽  
Jürgen Wendland ◽  
Hanspeter Helfer ◽  
Peter Philippsen
Keyword(s):  
Fluorescent Protein ◽  
Hyphal Growth ◽  
Time Lapse ◽  
Growth Direction ◽  
Ashbya Gossypii ◽  
Growth Guidance ◽  
Characteristic Features ◽  
Green Fluorescent ◽  
Hyphal Tip

Characteristic features of morphogenesis in filamentous fungi are sustained polar growth at tips of hyphae and frequent initiation of novel growth sites (branches) along the extending hyphae. We have begun to study regulation of this process on the molecular level by using the model fungus Ashbya gossypii. We found that the A. gossypii Ras-like GTPase Rsr1p/Bud1p localizes to the tip region and that it is involved in apical polarization of the actin cytoskeleton, a determinant of growth direction. In the absence of RSR1/BUD1, hyphal growth was severely slowed down due to frequent phases of pausing of growth at the hyphal tip. During pausing events a hyphal tip marker, encoded by the polarisome component AgSPA2, disappeared from the tip as was shown by in vivo time-lapse fluorescence microscopy of green fluorescent protein-labeled AgSpa2p. Reoccurrence of AgSpa2p was required for the resumption of hyphal growth. In the Agrsr1/bud1Δ deletion mutant, resumption of growth occurred at the hyphal tip in a frequently uncoordinated manner to the previous axis of polarity. Additionally, hyphal filaments in the mutant developed aberrant branching sites by mislocalizing AgSpa2p thus distorting hyphal morphology. These results define AgRsr1p/Bud1p as a key regulator of hyphal growth guidance.

scholarly journals Demand-oriented riboflavin supply of organic broiler using a feed material from fermentation of Ashbya gossypii

animal ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 100003
Author(s):  
C. Lambertz ◽  
J. Leopold ◽  
S. Ammer ◽  
F. Leiber ◽  
B. Thesing ◽  
...  
Keyword(s):  
Ashbya Gossypii ◽  
Feed Material

Effects of sirtuins on the riboflavin production in Ashbya gossypii

2021 ◽  
Author(s):  
Tatsuya Kato ◽  
Junya Azegami ◽  
Mai Kano ◽  
Hesham A. El Enshasy ◽  
Enoch Y. Park
Keyword(s):  
Ashbya Gossypii ◽  
Riboflavin Production

scholarly journals From Function to Shape: A Novel Role of a Formin in Morphogenesis of the Fungus Ashbya gossypii

2006 ◽  
Vol 17 (1) ◽  
pp. 130-145 ◽  
Author(s):  
Hans-Peter Schmitz ◽  
Andreas Kaufmann ◽  
Michael Köhli ◽  
Pierre Philippe Laissue ◽  
Peter Philippsen
Keyword(s):  
Giant Cells ◽  
Polar Growth ◽  
Ashbya Gossypii ◽  
Essential Factor ◽  
Wild Type ◽  
Actin Cable ◽  
Lateral Branches ◽  
Actin Cables ◽  
Two Hybrid

Morphogenesis of filamentous ascomycetes includes continuously elongating hyphae, frequently emerging lateral branches, and, under certain circumstances, symmetrically dividing hyphal tips. We identified the formin AgBni1p of the model fungus Ashbya gossypii as an essential factor in these processes. AgBni1p is an essential protein apparently lacking functional overlaps with the two additional A. gossypii formins that are nonessential. Agbni1 null mutants fail to develop hyphae and instead expand to potato-shaped giant cells, which lack actin cables and thus tip-directed transport of secretory vesicles. Consistent with the essential role in hyphal development, AgBni1p locates to tips, but not to septa. The presence of a diaphanous autoregulatory domain (DAD) indicates that the activation of AgBni1p depends on Rho-type GTPases. Deletion of this domain, which should render AgBni1p constitutively active, completely changes the branching pattern of young hyphae. New axes of polarity are no longer established subapically (lateral branching) but by symmetric divisions of hyphal tips (tip splitting). In wild-type hyphae, tip splitting is induced much later and only at much higher elongation speed. When GTP-locked Rho-type GTPases were tested, only the young hyphae with mutated AgCdc42p split at their tips, similar to the DAD deletion mutant. Two-hybrid experiments confirmed that AgBni1p interacts with GTP-bound AgCdc42p. These data suggest a pathway for transforming one axis into two new axes of polar growth, in which an increased activation of AgBni1p by a pulse of activated AgCdc42p stimulates additional actin cable formation and tip-directed vesicle transport, thus enlarging and ultimately splitting the polarity site.

Insertional Mutagenesis in the Vitamin B2 Producer Fungus Ashbya gossypii

2005 ◽  
pp. 283-300 ◽  
Author(s):  
MarÍa A. Santos ◽  
Laura Mateos ◽  
Karl-Peter Stahmann ◽  
José-Luis Revuelta
Keyword(s):  
Insertional Mutagenesis ◽  
Ashbya Gossypii ◽  
Vitamin B2

Flavin Coenzymes, Flavinogenesis and Reproduction in Ashbya gossypii*

1965 ◽  
Vol 57 (6) ◽  
pp. 773-786 ◽  
Author(s):  
PAOLO CERLETTI ◽  
ROBERTO STROM ◽  
MARIA GRAZIA GIORDANO ◽  
DONATELLA BARRA ◽  
SILVIA GIOVENCO
Keyword(s):  
Ashbya Gossypii

scholarly journals Genomic analysis of a riboflavin-overproducing Ashbya gossypii mutant isolated by disparity mutagenesis

BMC Genomics ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Tatsuya Kato ◽  
Junya Azegami ◽  
Ami Yokomori ◽  
Hideo Dohra ◽  
Hesham A. El Enshasy ◽  
...  
Keyword(s):  
Genomic Analysis ◽  
Ashbya Gossypii

Ashbya Gossypii—Its Significance in Nature and in the Laboratory

Mycologia ◽  
1950 ◽  
Vol 42 (5) ◽  
pp. 603-623
Author(s):  
Thomas G. Pridham ◽  
Kenneth B. Raper
Keyword(s):  
Ashbya Gossypii
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