Inheritance of chromosome-length polymorphisms in Ophiostoma ulmi (sensu lato)

1995 ◽  
Vol 27 (6) ◽  
pp. 541-549 ◽  
Author(s):  
K. Dewar ◽  
L. Bernier
Keyword(s):  
Chromosome Length ◽  
Ophiostoma Ulmi ◽  
Length Polymorphisms ◽  
Chromosome Length Polymorphisms

scholarly journals Pulsed field gel electrophoresis reveals chromosome length and number differences in Brazilian strains of Metarhizium Anisopliae

2005 ◽  
Vol 48 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Vanessa Kava-Cordeiro ◽  
Marisa Vieira de Queiroz ◽  
Aline Aparecida Pizzirani-Kleiner ◽  
João Lúcio Azevedo
Keyword(s):  
Metarhizium Anisopliae ◽  
Gel Electrophoresis ◽  
Chromosome Length ◽  
Pulsed Field Gel Electrophoresis ◽  
Chromosomal Dna ◽  
Parasexual Cycle ◽  
Pulsed Field ◽  
Length Polymorphisms ◽  
Chromosome Length Polymorphisms ◽  
Type Strains

Electrophoretic karyotypes of eight wild-type strains of Metarhizium anisopliae var. anisopliae were obtained by pulsed-field gel electrophoresis. These strains were isolated from insects of six different Brazilian states. The chromosomal DNA molecules of three strains were separated into seven bands and of five strains into eight bands. Chromosome length polymorphisms were also observed. The size of the chromosomal DNA of all strains varied between 7.7 and 0.9 Mb using the Aspergillus nidulans chromosomes as size standards. The total genome size of these strains was estimated in at least 29.7 Mb. Some correlations between differences in karyotype and occurrence of parasexual cycle likewise the host specificity were discussed.

Inheritance of chromosome-length polymorphisms in the phytopathogenic ascomycete Botryotinia fuckeliana (anam. Botrytis cinerea)

2002 ◽  
Vol 106 (9) ◽  
pp. 1075-1085 ◽  
Author(s):  
Inmaculada Vallejo ◽  
María Carbú ◽  
Francisco Muñoz ◽  
Laureana Rebordinos ◽  
Jesús M. Cantoral
Keyword(s):  
Botrytis Cinerea ◽  
Chromosome Length ◽  
Length Polymorphisms ◽  
Chromosome Length Polymorphisms ◽  
Botryotinia Fuckeliana

scholarly journals Inheritance of chromosome-length polymorphisms in Coprinus cinereus.

Genetics ◽  
1994 ◽  
Vol 137 (1) ◽  
pp. 87-94 ◽  
Author(s):  
M E Zolan ◽  
N K Heyler ◽  
N Y Stassen
Keyword(s):  
Marker Chromosome ◽  
Mutant Gene ◽  
Chromosome Length ◽  
Coprinus Cinereus ◽  
Wild Type ◽  
Marker Chromosomes ◽  
Length Polymorphisms ◽  
Chromosome Length Polymorphisms ◽  
Wild Type Parent ◽  
Mutant Chromosome

Abstract We have investigated the inheritance of chromosome-length polymorphisms in the basidiomycete Coprinus cinereus. The electrophoretic karyotypes of interfertile strains of C. cinereus are strikingly different, and crosses between strains with different karyotypes yield progeny with chromosomes of new sizes. Repeated backcrossing of a mutant to one parent often stabilizes the mutant chromosome at a unique size; this then becomes a chromosome-length polymorphism marker for that mutant gene. A comparison of mutant strains, their wild-type progenitor, and backcrossed strains revealed that these marker chromosomes are not caused by the initial mutagenic treatment and are found only in progeny of crosses between strains with polymorphic chromosomes. Thus, they are most likely formed by meiotic recombination. For the rad12 gene, the marker chromosome can further recombine to become the size of the homolog of the backcross parent. For the rad3 gene, both ectopic and homologous recombination events are likely involved in the generation of the marker chromosomes. As predicted by a recombination model, a cross to a new wild-type parent can change the size of a mutant marker chromosome. Therefore, changes in chromosome length are a common and prominent feature of the genome of this sexual fungus, and a variety of karyotypes is tolerated by the organism.

Sign in / Sign up

Export Citation Format

Share Document