Zobrazeno 1 - 10
of 23
pro vyhledávání: '"William J. Buikema"'
Publikováno v:
Journal of Bacteriology. 185:2306-2314
The patB gene product is required for growth and survival of the filamentous cyanobacterium Anabaena sp. strain PCC 7120 in the absence of combined nitrogen. A patB :: gfp fusion demonstrated that this gene is expressed exclusively in heterocysts. pa
Autor:
William J. Buikema, Robert Haselkorn
Publikováno v:
Proceedings of the National Academy of Sciences. 98:2729-2734
Heterocyst differentiation in the filamentous cyanobacterium Anabaena PCC 7120 requires a functional hetR gene. Increased expression of the hetR gene is seen in developing and mature heterocysts in response to fixed nitrogen limitation. We mapped fou
Publikováno v:
University of Helsinki
Cyanobacteria produce toxins that kill animals. The two main classes of cyanobacterial toxins are cyclic peptides that cause liver damage and alkaloids that block nerve transmission. Many toxin-producing strains from Finnish lakes were brought into a
Autor:
Robert Haselkorn, William J. Buikema
Publikováno v:
Annual Review of Plant Physiology and Plant Molecular Biology. 44:33-52
Publikováno v:
Plant Molecular Biology. 20:37-47
Previous studies have indicated that ADP-glucose pyrophosphorylase (ADPGlc PPase) from the cyanobacterium Anabaena sp. strain PCC 7120 is more similar to higher-plant than to enteric bacterial enzymes in antigenicity and allosteric properties. In thi
Autor:
Robert Haselkorn, William J. Buikema
Publikováno v:
Journal of Bacteriology. 173:1879-1885
Approximately 140 mutants of Anabaena sp. strain PCC 7120 unable to grow aerobically on media lacking fixed nitrogen (Fix-) were isolated after mutagenesis with diethyl sulfate and penicillin enrichment. A large cosmid library of wild-type Anabaena s
Autor:
William J. Buikema, Robert Haselkorn
Publikováno v:
Genes & Development. 5:321-330
Anabaena 7120 mutant 216 fails to differentiate heterocyst. We previously identified a 2.4-kb wild-type DNA fragment able to complement this mutant. We show here that the sequence of this fragment contains a single open reading frame (hetR), encoding
Publikováno v:
Molecular and General Genetics MGG. 221:227-234
A 1.8 kb transcript corresponding to a region of the Anabaena 7120 chromosome 4 kb downstream of the nifHDK operon appears 12-18 h after heterocyst induction. The DNA corresponding to this transcript was sequenced and found to contain two open readin
Autor:
William J. Buikema, Robert Haselkorn
Publikováno v:
Associative and Endophytic Nitrogen-fixing Bacteria and Cyanobacterial Associations ISBN: 9781402035418
Biological Fixation of Nitrogen for Ecology and Sustainable Agriculture ISBN: 9783642638558
Biological Fixation of Nitrogen for Ecology and Sustainable Agriculture ISBN: 9783642638558
Cyanobacteria face the difficult problem of fixing nitrogen while generating oxygen. Some solve this problem by storing carbohydrate during the day and using the stored material to fuel nitrogen fixation during the night. Others, notably Trichodesmiu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5bc98bac85ce1a5efdc91e78f1e3cbb
https://doi.org/10.1007/1-4020-3546-2_11
https://doi.org/10.1007/1-4020-3546-2_11
Autor:
Tanja Vakkilainen, Leo Rouhiainen, Robert Haselkorn, William J. Buikema, B. L. Siemer, Kaarina Sivonen
Publikováno v:
Applied and environmental microbiology. 70(2)
The cluster of microcystin synthetase genes from Anabaena strain 90 was sequenced and characterized. The total size of the region is 55.4 kb, and the genes are organized in three putative operons. The first operon ( mcyA - mcyB - mcyC ) is transcribe