Two species of phyllosticta with a common ascigerous stage on Sapindus

1968 ◽  
Vol 35 (2) ◽  
pp. 121-128
Author(s):  
H. Surendranath Pai
Keyword(s):  
Ascigerous Stage

The Ascigerous Stage of Colletotrichum Lagenarium Induced by Ultra-Violet Irradiation

Mycologia ◽  
1931 ◽  
Vol 23 (2) ◽  
pp. 134-139 ◽  
Author(s):  
F. L. Stevens
Keyword(s):  
Ultra Violet ◽  
Colletotrichum Lagenarium ◽  
Ascigerous Stage

The Ascigerous Stage of Septoria Querceti Thuem

Mycologia ◽  
1952 ◽  
Vol 44 (2) ◽  
pp. 216-220 ◽  
Author(s):  
Joseph C. Gilman ◽  
Bryce N. Wadley
Keyword(s):  
Ascigerous Stage

scholarly journals On the Occurrence in Britain of the Ascigerous Stage of a ‘Brown Rot’ Fungus

1921 ◽  
Vol os-35 (1) ◽  
pp. 125-135 ◽  
Author(s):  
H. WORMALD
Keyword(s):  
Brown Rot ◽  
Brown Rot Fungus ◽  
Ascigerous Stage

CYTOLOGY OF HELMINTHOSPORIUM TURCICUM AND ITS ASCIGEROUS STAGE, TRICHOMETASPHAERIA TURCICA

1960 ◽  
Vol 47 (5) ◽  
pp. 328-339 ◽  
Author(s):  
P. S. Knox-Davies ◽  
J. G. Dickson
Keyword(s):  
Ascigerous Stage ◽  
Helminthosporium Turcicum

ON DEMATIUM PULLULANS De B. AND ITS ASCIGEROUS STAGE

1928 ◽  
Vol 15 (3) ◽  
pp. 371-391 ◽  
Author(s):  
F. T. BENNETT
Keyword(s):  
Ascigerous Stage

scholarly journals PRODUCTION OF THE ASCIGEROUS STAGE IN CULTURE OF HELMINTHOSPORIUM ORYZAE

1927 ◽  
Vol 2 (1) ◽  
pp. 1-8_3 ◽  
Author(s):  
Seiya ITO ◽  
Kazue KURIBAYASHI
Keyword(s):  
Ascigerous Stage ◽  
Helminthosporium Oryzae

Eutypa armeniacae Hansf. & Carter, sp. nov., an airborne vascular pathogen of Prunus armeniaca L. in southern Australia

1957 ◽  
Vol 5 (1) ◽  
pp. 21 ◽  
Author(s):  
MV Carter
Keyword(s):  
Experimental Evidence ◽  
Prunus Armeniaca ◽  
Causal Organism ◽  
Prunus Armeniaca L ◽  
Ascigerous Stage

A newly described Ascomycete, Eutypa armeniacae Hansf. & Carter, is shown to give the symptoms associated with "gummosis" disease of Prunus armeniaca L. (common apricot) in southern Australia. Experimental evidence is produced to substantiate the hypothesis that E. armeniacae is the ascigerous stage of an imperfect Cytosporina sp, which has long been recognized as the causal organism of "gummosis", and that airborne ascospores of E. armeniacae are the only source of inoculum. Ascospores of this species are shown to be well suited to aerial dissemination over long distances.

A new species of septoria and its associated ascigerous stage

1959 ◽  
Vol 10 (3) ◽  
pp. 216-218 ◽  
Author(s):  
S. T. Tilak
Keyword(s):  
New Species ◽  
Ascigerous Stage ◽  
A New Species

scholarly journals Effects of Prior Vegetative Growth, Inoculum Density, Light, and Mating on Conidiation of Erysiphe necator

2012 ◽  
Vol 102 (1) ◽  
pp. 65-72 ◽  
Author(s):  
David M. Gadoury ◽  
Laura M. Wakefield ◽  
Lance Cadle-Davidson ◽  
Ian B. Dry ◽  
Robert C. Seem
Keyword(s):  
Quorum Sensing ◽  
Latent Period ◽  
Vegetative Growth ◽  
Inoculum Density ◽  
Mating Types ◽  
Erysiphe Necator ◽  
Asexual Sporulation ◽  
Powdery Mildews ◽  
Ascigerous Stage

Initiation of asexual sporulation in powdery mildews is preceded by a period of superficial vegetative growth of mildew colonies. We found evidence of a quorum-sensing signal in Erysiphe necator that was promulgated at the colony center and stimulated conidiation throughout the colony. Removal of the colony center after putative signal promulgation had no impact upon timing of sporulation by 48-h-old hyphae at the colony margin. However, removal of the colony center before signaling nearly doubled the latent period. A relationship between inoculum density and latent period was also observed, with latent period decreasing as the number of conidia deposited per square millimeter was increased. The effect was most pronounced at the lowest inoculum densities, with little decrease of the latent period as the density of inoculation increased above 10 spores/mm. Furthermore, light was shown to be necessary to initiate conidiation of sporulation-competent colonies. When plants were inoculated and maintained in a day-and-night cycle for 36 h but subjected to darkness after 36 h, colonies kept in darkness failed to sporulate for several days after plants kept in light had sporulated. Once returned to light, the dark-suppression was immediately reversed, and sporulation commenced within 12 h. Merging of colonies of compatible mating types resulted in near-cessation of sporulation, both in the region of merging and in more distant parts of the colonies. Colonies continued to expand but stopped producing new conidiophores once pairing of compatible mating types had occurred, and extant conidiophores stopped producing new conidia. Therefore, in addition to a quorum-sensing signal to initiate conidiation, there appears to be either signal repression or another signal that causes conidiation to cease once pairing has occurred and the pathogen has initiated the ascigerous stage for overwintering.

The Ascigerous Stage of Blastomyces dermatitidis

Mycologia ◽  
1968 ◽  
Vol 60 (1) ◽  
pp. 76 ◽  
Author(s):  
E. S. McDonough ◽  
Ann L. Lewis
Keyword(s):  
Blastomyces Dermatitidis ◽  
Ascigerous Stage
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