Linked Life Data

20156472

Source:http://linkedlifedata.com/resource/pubmed/id/20156472

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2010-5-3
pubmed:abstractText
Recent researches indicated that microgravity can increase pathogenic bacteria virulence. We presumed that microgravity might affect the toxin production of toxic cyanobacteria too. Microcystis aeruginosa PCC7806 was chosen as the model organism to investigate the effects of simulated microgravity (SMG) on the growth and toxin production of toxic cyanobacteria. SMG could inhibit the growth of M. aeruginosa, which resulted in decreased cell number and lower specific growth rate after 20-day treatment. M. aeruginosa sensed the reduced gravity very quickly and immediately up-regulated its microcystin (MC) synthesis and exudation in 2 days. Subsequently, the intracellular MC content fell back since the 8(th) day and was stable around the initial level in the following days, suggesting a quick adaptation to the reduced gravity. SMG had negative effects on the photochemical system and the absorption of phosphorus in most time. However, the photosynthetic pigment concentrations and nitrogen absorption used to be transitorily stimulated upwards by SMG. It was assumed that SMG inhibited cell growth by interfering its photosynthesis and phosphorus uptake, while the enhanced MC production was related with pigment and nitrogen metabolisms. This study reveals that SMG is a novel environmental signal which inhibits growth and enhances MC production of M. aeruginosa.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
http://linkedlifedata.com/resource/pubmed/chemical/Bacterial Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Bacterial Toxins, http://linkedlifedata.com/resource/pubmed/chemical/Carotenoids, http://linkedlifedata.com/resource/pubmed/chemical/Chlorophyll, http://linkedlifedata.com/resource/pubmed/chemical/Marine Toxins, http://linkedlifedata.com/resource/pubmed/chemical/Microcystins, http://linkedlifedata.com/resource/pubmed/chemical/Nitrates, http://linkedlifedata.com/resource/pubmed/chemical/Phosphates, http://linkedlifedata.com/resource/pubmed/chemical/Photosystem II Protein Complex, http://linkedlifedata.com/resource/pubmed/chemical/Phycocyanin, http://linkedlifedata.com/resource/pubmed/chemical/chlorophyll a, http://linkedlifedata.com/resource/pubmed/chemical/cyanobacterial toxin, http://linkedlifedata.com/resource/pubmed/chemical/cyanoginosin LR
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1879-3150
pubmed:author
pubmed:copyrightInfo
Copyright 2010 Elsevier Ltd. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
56
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1-7
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Simulated microgravity alters growth and microcystin production in Microcystis aeruginosa (cyanophyta).
pubmed:affiliation
State Key Laboratory of Fresh water Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, Hubei Province, PR China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't