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Inheritance of antagonistic properties and lytic enzyme activities in sexual crosses of Talaromyces flavus
Year:
1992
Source of publication :
Annals of Applied Biology
Authors :
Katan, Talma
;
.
Volume :
121
Co-Authors:

MADI, L., Department of Plant Pathology and Microbiology, Otto Warburg Center for Biotechnology in Agriculture, Hebrew University of Jerusalem, Faculty of Agriculture, P.O.B. 12, Rehovot, 76100, Israel
KATAN, T., Department of Plant Pathology, Agricultural Research Organisation, Volcani Center, P.O.B. 6, Bet Dagan, 50250, Israel
HENIS, Y., Department of Plant Pathology and Microbiology, Otto Warburg Center for Biotechnology in Agriculture, Hebrew University of Jerusalem, Faculty of Agriculture, P.O.B. 12, Rehovot, 76100, Israel

Facilitators :
From page:
565
To page:
576
(
Total pages:
12
)
Abstract:
Two wild‐type strains and three benomyl‐resistant mutants of the antagonistic ascomycete Talaromyces flavus were crossed in six combinations, two of which yielded hybrid cleistothecia. Parental strains and their ascospore progenies varied in several traits considered to play an important role in the capacity to control soilborne fungal pathogens: extracellular activities of glucose oxidase and cell‐wall degrading enzymes, antibiosis towards Verticillium dahliae, and parasitism and biocontrol of Sclerotium rolfsii. A non‐Mendelian quantitative mode of inheritance was found for β‐1, 3‐glucanase and chitinase activities but only the latter exhibited a normal frequency distribution. Some of the progenies exhibited higher glucanase and chitinase activities than those found in the parental strains. Progeny analysis for chitinase, glucanase, cellulase, and glucose oxidase activities revealed no genetic association between any two of these enzymes. Antibiosis was correlated with glucose‐oxidase activity in one cross, but not in the other. The ability to reduce bean root rot caused by S. rolfsii was correlated with mycoparasitic activity against S. rolfsii sclerotia in one cross, but not in the other. One out of the 20 progenies tested was able to reduce bean root rot more effectively than its parent strains, thus demonstrating the feasibility of improving a biocontrol agent by conventional breeding. Copyright © 1992, Wiley Blackwell. All rights reserved
Note:
Related Files :
biological control
cell‐wall degrading enzymes
mycoparasitism
Sclerotium rolfsii
Verticillium
Show More
Related Content
More details
DOI :
10.1111/j.1744-7348.1992.tb03466.x
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19718
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:31
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Scientific Publication
Inheritance of antagonistic properties and lytic enzyme activities in sexual crosses of Talaromyces flavus
121

MADI, L., Department of Plant Pathology and Microbiology, Otto Warburg Center for Biotechnology in Agriculture, Hebrew University of Jerusalem, Faculty of Agriculture, P.O.B. 12, Rehovot, 76100, Israel
KATAN, T., Department of Plant Pathology, Agricultural Research Organisation, Volcani Center, P.O.B. 6, Bet Dagan, 50250, Israel
HENIS, Y., Department of Plant Pathology and Microbiology, Otto Warburg Center for Biotechnology in Agriculture, Hebrew University of Jerusalem, Faculty of Agriculture, P.O.B. 12, Rehovot, 76100, Israel

Inheritance of antagonistic properties and lytic enzyme activities in sexual crosses of Talaromyces flavus
Two wild‐type strains and three benomyl‐resistant mutants of the antagonistic ascomycete Talaromyces flavus were crossed in six combinations, two of which yielded hybrid cleistothecia. Parental strains and their ascospore progenies varied in several traits considered to play an important role in the capacity to control soilborne fungal pathogens: extracellular activities of glucose oxidase and cell‐wall degrading enzymes, antibiosis towards Verticillium dahliae, and parasitism and biocontrol of Sclerotium rolfsii. A non‐Mendelian quantitative mode of inheritance was found for β‐1, 3‐glucanase and chitinase activities but only the latter exhibited a normal frequency distribution. Some of the progenies exhibited higher glucanase and chitinase activities than those found in the parental strains. Progeny analysis for chitinase, glucanase, cellulase, and glucose oxidase activities revealed no genetic association between any two of these enzymes. Antibiosis was correlated with glucose‐oxidase activity in one cross, but not in the other. The ability to reduce bean root rot caused by S. rolfsii was correlated with mycoparasitic activity against S. rolfsii sclerotia in one cross, but not in the other. One out of the 20 progenies tested was able to reduce bean root rot more effectively than its parent strains, thus demonstrating the feasibility of improving a biocontrol agent by conventional breeding. Copyright © 1992, Wiley Blackwell. All rights reserved
Scientific Publication
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