نتایج جستجو برای: homothallic

تعداد نتایج: 256  

2017
Thomas Jung Marília Horta Jung Santa Olga Cacciola Thomas Cech József Bakonyi Diána Seress Saveria Mosca Leonardo Schena Salvatore Seddaiu Antonella Pane Gaetano Magnano di San Lio Cristiana Maia Alfredo Cravador Antonio Franceschini Bruno Scanu

During surveys of Phytophthora diversity in natural and semi-natural Fagaceae forests in Austria, Italy and Portugal, four new cryptic species were isolated from rhizosphere soil samples. Multigene phylogeny based on nuclear ITS, ß-tubulin and HSP90 and mitochondrial cox1 and NADH1 gene sequences demonstrated that two species, P. tyrrhenica and P. vulcanica spp. nov., belong to phylogenetic Cla...

Journal: :Cell structure and function 1996
H Urushihara

Recognition of mating partners is of central importance in the sexual processes. In consideration that the most important function of sexuality is to shuffle genetic materials to generate wider variation of characters, mating among different genetic backgrounds is preferable. Wild isolates of cellular slime mold Dictyostelium discoideum are predominantly heterothallic, but homothallic ones also...

Journal: :Mycological research 2006
Ryan Donahoo Cheryl L Blomquist Samantha L Thomas John K Moulton David E L Cooke Kurt Haas Lamour

A previously unknown Phytophthora was recovered more than 60 times from evergreen hybrid azalea leaves collected during surveys for the sudden oak death pathogen Phytophthora ramorum in California and Tennessee. The novel Phytophthora was discovered when genomic DNA from this species cross-reacted with the ITS-based diagnostic PCR primers used to screen plants for the presence of P. ramorum. Th...

Journal: :Genetics 1998
K VanWinkle-Swift K Baron A McNamara P Minke C Burrascano J Maddock

Chlamydomonas monoica undergoes homothallic sexual reproduction in response to nitrogen starvation. Mating pairs are established in clonal culture via flagellar agglutination and fuse by way of activated mating structures to form the quadriflagellate zygote. The zygote further matures into a dormant diploid zygospore through a series of events that we collectively refer to as zygosporulation. M...

Journal: :Genetics 2000
M van der Gaag A J Debets J Oosterhof M Slakhorst J A Thijssen R F Hoekstra

In fungi, meiotic drive is observed as spore killing. In the secondarily homothallic ascomycete Podospora anserina it is characterized by the abortion of two of the four spores in the ascus. We have identified seven different types of meiotic drive elements (Spore killers). Among 99 isolates from nature, six of these meiotic drive elements occurred in a local population. Spore killers comprise ...

Journal: :Eukaryotic cell 2006
Nicole Nolting Stefanie Pöggeler

MADS box transcription factors control diverse developmental processes in plants, metazoans, and fungi. To analyze the involvement of MADS box proteins in fruiting body development of filamentous ascomycetes, we isolated the mcm1 gene from the homothallic ascomycete Sordaria macrospora, which encodes a putative homologue of the Saccharomyces cerevisiae MADS box protein Mcm1p. Deletion of the S....

Journal: :International journal of systematic and evolutionary microbiology 2005
Cletus P Kurtzman

The new methanol-assimilating yeast species Komagataella phaffii Kurtzman sp. nov. (type strain NRRL Y-7556(T)=CBS 2612(T)) is described. Of the four known strains of this species, two were isolated from black oak trees in California, USA, one from an Emory oak in Arizona, USA, and one from an unidentified source in Mexico. The species forms hat-shaped ascospores in deliquescent asci and appear...

2014
Sarah G. Swygert Benjamin J. Manning Subhadip Senapati Parminder Kaur Stuart Lindsay Borries Demeler Craig L. Peterson

Heterochromatin is a repressive chromatin compartment essential for maintaining genomic integrity. A hallmark of heterochromatin is the presence of specialized nonhistone proteins that alter chromatin structure to inhibit transcription and recombination. It is generally assumed that heterochromatin is highly condensed. However, surprisingly little is known about the structure of heterochromatin...

2003
SATOSHI HARASHIMA YASUJI OSHIMA D Y. OSHIMA

Two of the three homothallic genes, HMa and HMa, showed direct linkage to the mating-type locus at approximately 73 and 98 stranes (57 and 65 centimorgans [cM]), respectively, whereas, the other, HO, showed no linkage to 25 standard markers distributed over 17 chromosomes including the matingtype locus. To determine whether the HMa and HMa loci located on the left or right side of the mating-ty...

Journal: :Plant physiology 1972
C R Curtis

An action spectrum was determined for the photoinduced formation of perithecia in a homothallic strain of Nectria haematococca Berk. and Br. var. cucurbitae (Snyder and Hansen) Dingley. Dose-response curves for perithecial formation were obtained from 340 to 510 nanometers at 10-nanometer intervals. Radiation longer than 510 nanometers was not effective for inducing perithecial formation. The a...

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