Steady state growth space study of Lactococcus lactis in D-stat cultures

Growth space of Lactococcus lactis subsp. lactis IL1403 was studied at constant growth rate using D-stat cultivation technique. Starting from steady state conditions in a chemostat culture (μ = 0.2 h⁻¹), the pH and/or temperature were continuously changed in the range of 5.4-6.4 and 26-34°C, respect...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Antonie van Leeuwenhoek 2009-11, Vol.96 (4), p.487-496
Hauptverfasser: Lahtvee, Petri-Jaan, Valgepea, Kaspar, Nahku, Ranno, Abner, Kristo, Adamberg, Kaarel, Vilu, Raivo
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 496
container_issue 4
container_start_page 487
container_title Antonie van Leeuwenhoek
container_volume 96
creator Lahtvee, Petri-Jaan
Valgepea, Kaspar
Nahku, Ranno
Abner, Kristo
Adamberg, Kaarel
Vilu, Raivo
description Growth space of Lactococcus lactis subsp. lactis IL1403 was studied at constant growth rate using D-stat cultivation technique. Starting from steady state conditions in a chemostat culture (μ = 0.2 h⁻¹), the pH and/or temperature were continuously changed in the range of 5.4-6.4 and 26-34°C, respectively, followed by the return to the initial environmental conditions. Based on substrate consumption and product formation yields and expression changes of 1,920 genes, it was shown that changes of physiological state were not dependent on the direction of movement (from pH 6.3 to 5.4 or from 5.4 to 6.3), showing that quasi steady state values in D-stat corresponded to the steady state values in chemostats. Relative standard deviation of growth characteristics in triplicate D-stat experiments was below 10%. Continuing the experiment and reestablishing initial growth conditions revealed in average 7% difference (hysteresis) in growth characteristics when comparing chemostat steady state cultures prior and after the change of environmental conditions. Similarly, shifts were also seen at gene expression levels. The large amount of quantitatively reliable data obtained in this study provided a new insight into dynamic properties of bacterial physiology, and can be used for describing the growth space of microorganisms by modeling cell metabolism.
doi_str_mv 10.1007/s10482-009-9363-2
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_734184536</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1884175811</sourcerecordid><originalsourceid>FETCH-LOGICAL-c455t-6bffb0b6c742e6a16a038b1f826aa55737e9168ddefb8858cf1b676ea04077443</originalsourceid><addsrcrecordid>eNp9kUtv1DAUhS0EosPAD2ADERKwMlxfO34sUQu00khdlK4tx2MPqTLxYCdC_ff1KCMqsejKj_udc-1zCXnL4AsDUF8LA6GRAhhquOQUn5EVaxVSI415TlYAwKkEhWfkVSl39WikVi_JGTMSOGqxIpc3U3Db-6ZMbgrNLqe_0--mHJwP9WquhRSbjfNT8sn7uTRD3fel6cfmgh41jZ-Hac6hvCYvohtKeHNa1-T2x_df55d0c_3z6vzbhnrRthOVXYwddNIrgUE6Jh1w3bGoUTrXtoqrYJjU222Indat9pF1UsngQIBSQvA1-bz4HnL6M4cy2X1ffBgGN4Y0F6u4YFq0NY41-fQkiQxRIKoKfvgPvEtzHusvLHJAaJViFWIL5HMqJYdoD7nfu3xvGdjjNOwyDVtDtsdpVO2avDsZz90-bB8Vp_gr8PEEuOLdELMbfV_-cYggTXWtHC5cqaVxF_LjC5_q_n4RRZes2-VqfHuDwDgwaYTSwB8ADaipMw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>230205771</pqid></control><display><type>article</type><title>Steady state growth space study of Lactococcus lactis in D-stat cultures</title><source>MEDLINE</source><source>SpringerLink Journals - AutoHoldings</source><creator>Lahtvee, Petri-Jaan ; Valgepea, Kaspar ; Nahku, Ranno ; Abner, Kristo ; Adamberg, Kaarel ; Vilu, Raivo</creator><creatorcontrib>Lahtvee, Petri-Jaan ; Valgepea, Kaspar ; Nahku, Ranno ; Abner, Kristo ; Adamberg, Kaarel ; Vilu, Raivo</creatorcontrib><description>Growth space of Lactococcus lactis subsp. lactis IL1403 was studied at constant growth rate using D-stat cultivation technique. Starting from steady state conditions in a chemostat culture (μ = 0.2 h⁻¹), the pH and/or temperature were continuously changed in the range of 5.4-6.4 and 26-34°C, respectively, followed by the return to the initial environmental conditions. Based on substrate consumption and product formation yields and expression changes of 1,920 genes, it was shown that changes of physiological state were not dependent on the direction of movement (from pH 6.3 to 5.4 or from 5.4 to 6.3), showing that quasi steady state values in D-stat corresponded to the steady state values in chemostats. Relative standard deviation of growth characteristics in triplicate D-stat experiments was below 10%. Continuing the experiment and reestablishing initial growth conditions revealed in average 7% difference (hysteresis) in growth characteristics when comparing chemostat steady state cultures prior and after the change of environmental conditions. Similarly, shifts were also seen at gene expression levels. The large amount of quantitatively reliable data obtained in this study provided a new insight into dynamic properties of bacterial physiology, and can be used for describing the growth space of microorganisms by modeling cell metabolism.</description><identifier>ISSN: 0003-6072</identifier><identifier>EISSN: 1572-9699</identifier><identifier>DOI: 10.1007/s10482-009-9363-2</identifier><identifier>PMID: 19603284</identifier><identifier>CODEN: ANLEDR</identifier><language>eng</language><publisher>Dordrecht: Dordrecht : Springer Netherlands</publisher><subject>Bacteria ; Bacterial physiology ; Bacteriology ; Biological and medical sciences ; Biology of microorganisms of confirmed or potential industrial interest ; Biomedical and Life Sciences ; Biotechnology ; Cell culture ; Chemostats ; Continuous culture ; Cultivation techniques ; Data processing ; Environmental changes ; Environmental conditions ; Fundamental and applied biological sciences. Psychology ; Gene Expression Profiling ; Growth conditions ; Growth rate ; Hydrogen-Ion Concentration ; Hysteresis ; Lactococcus lactis ; Lactococcus lactis - growth &amp; development ; Life Sciences ; Medical Microbiology ; Metabolism ; Microbiology ; Microorganisms ; Miscellaneous ; Mission oriented research ; Original Paper ; pH effects ; Physiology ; Physiology and metabolism ; Plant Sciences ; Soil Science &amp; Conservation ; Standard deviation ; Stress, Physiological ; Temperature ; Temperature effects</subject><ispartof>Antonie van Leeuwenhoek, 2009-11, Vol.96 (4), p.487-496</ispartof><rights>Springer Science+Business Media B.V. 2009</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c455t-6bffb0b6c742e6a16a038b1f826aa55737e9168ddefb8858cf1b676ea04077443</citedby><cites>FETCH-LOGICAL-c455t-6bffb0b6c742e6a16a038b1f826aa55737e9168ddefb8858cf1b676ea04077443</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10482-009-9363-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10482-009-9363-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,777,781,27906,27907,41470,42539,51301</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=22069104$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/19603284$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lahtvee, Petri-Jaan</creatorcontrib><creatorcontrib>Valgepea, Kaspar</creatorcontrib><creatorcontrib>Nahku, Ranno</creatorcontrib><creatorcontrib>Abner, Kristo</creatorcontrib><creatorcontrib>Adamberg, Kaarel</creatorcontrib><creatorcontrib>Vilu, Raivo</creatorcontrib><title>Steady state growth space study of Lactococcus lactis in D-stat cultures</title><title>Antonie van Leeuwenhoek</title><addtitle>Antonie van Leeuwenhoek</addtitle><addtitle>Antonie Van Leeuwenhoek</addtitle><description>Growth space of Lactococcus lactis subsp. lactis IL1403 was studied at constant growth rate using D-stat cultivation technique. Starting from steady state conditions in a chemostat culture (μ = 0.2 h⁻¹), the pH and/or temperature were continuously changed in the range of 5.4-6.4 and 26-34°C, respectively, followed by the return to the initial environmental conditions. Based on substrate consumption and product formation yields and expression changes of 1,920 genes, it was shown that changes of physiological state were not dependent on the direction of movement (from pH 6.3 to 5.4 or from 5.4 to 6.3), showing that quasi steady state values in D-stat corresponded to the steady state values in chemostats. Relative standard deviation of growth characteristics in triplicate D-stat experiments was below 10%. Continuing the experiment and reestablishing initial growth conditions revealed in average 7% difference (hysteresis) in growth characteristics when comparing chemostat steady state cultures prior and after the change of environmental conditions. Similarly, shifts were also seen at gene expression levels. The large amount of quantitatively reliable data obtained in this study provided a new insight into dynamic properties of bacterial physiology, and can be used for describing the growth space of microorganisms by modeling cell metabolism.</description><subject>Bacteria</subject><subject>Bacterial physiology</subject><subject>Bacteriology</subject><subject>Biological and medical sciences</subject><subject>Biology of microorganisms of confirmed or potential industrial interest</subject><subject>Biomedical and Life Sciences</subject><subject>Biotechnology</subject><subject>Cell culture</subject><subject>Chemostats</subject><subject>Continuous culture</subject><subject>Cultivation techniques</subject><subject>Data processing</subject><subject>Environmental changes</subject><subject>Environmental conditions</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Gene Expression Profiling</subject><subject>Growth conditions</subject><subject>Growth rate</subject><subject>Hydrogen-Ion Concentration</subject><subject>Hysteresis</subject><subject>Lactococcus lactis</subject><subject>Lactococcus lactis - growth &amp; development</subject><subject>Life Sciences</subject><subject>Medical Microbiology</subject><subject>Metabolism</subject><subject>Microbiology</subject><subject>Microorganisms</subject><subject>Miscellaneous</subject><subject>Mission oriented research</subject><subject>Original Paper</subject><subject>pH effects</subject><subject>Physiology</subject><subject>Physiology and metabolism</subject><subject>Plant Sciences</subject><subject>Soil Science &amp; Conservation</subject><subject>Standard deviation</subject><subject>Stress, Physiological</subject><subject>Temperature</subject><subject>Temperature effects</subject><issn>0003-6072</issn><issn>1572-9699</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp9kUtv1DAUhS0EosPAD2ADERKwMlxfO34sUQu00khdlK4tx2MPqTLxYCdC_ff1KCMqsejKj_udc-1zCXnL4AsDUF8LA6GRAhhquOQUn5EVaxVSI415TlYAwKkEhWfkVSl39WikVi_JGTMSOGqxIpc3U3Db-6ZMbgrNLqe_0--mHJwP9WquhRSbjfNT8sn7uTRD3fel6cfmgh41jZ-Hac6hvCYvohtKeHNa1-T2x_df55d0c_3z6vzbhnrRthOVXYwddNIrgUE6Jh1w3bGoUTrXtoqrYJjU222Indat9pF1UsngQIBSQvA1-bz4HnL6M4cy2X1ffBgGN4Y0F6u4YFq0NY41-fQkiQxRIKoKfvgPvEtzHusvLHJAaJViFWIL5HMqJYdoD7nfu3xvGdjjNOwyDVtDtsdpVO2avDsZz90-bB8Vp_gr8PEEuOLdELMbfV_-cYggTXWtHC5cqaVxF_LjC5_q_n4RRZes2-VqfHuDwDgwaYTSwB8ADaipMw</recordid><startdate>20091101</startdate><enddate>20091101</enddate><creator>Lahtvee, Petri-Jaan</creator><creator>Valgepea, Kaspar</creator><creator>Nahku, Ranno</creator><creator>Abner, Kristo</creator><creator>Adamberg, Kaarel</creator><creator>Vilu, Raivo</creator><general>Dordrecht : Springer Netherlands</general><general>Springer Netherlands</general><general>Springer</general><general>Springer Nature B.V</general><scope>FBQ</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7QL</scope><scope>7T7</scope><scope>7U9</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>88I</scope><scope>8AO</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M2P</scope><scope>M7N</scope><scope>M7P</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><scope>7X8</scope></search><sort><creationdate>20091101</creationdate><title>Steady state growth space study of Lactococcus lactis in D-stat cultures</title><author>Lahtvee, Petri-Jaan ; Valgepea, Kaspar ; Nahku, Ranno ; Abner, Kristo ; Adamberg, Kaarel ; Vilu, Raivo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c455t-6bffb0b6c742e6a16a038b1f826aa55737e9168ddefb8858cf1b676ea04077443</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Bacteria</topic><topic>Bacterial physiology</topic><topic>Bacteriology</topic><topic>Biological and medical sciences</topic><topic>Biology of microorganisms of confirmed or potential industrial interest</topic><topic>Biomedical and Life Sciences</topic><topic>Biotechnology</topic><topic>Cell culture</topic><topic>Chemostats</topic><topic>Continuous culture</topic><topic>Cultivation techniques</topic><topic>Data processing</topic><topic>Environmental changes</topic><topic>Environmental conditions</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Gene Expression Profiling</topic><topic>Growth conditions</topic><topic>Growth rate</topic><topic>Hydrogen-Ion Concentration</topic><topic>Hysteresis</topic><topic>Lactococcus lactis</topic><topic>Lactococcus lactis - growth &amp; development</topic><topic>Life Sciences</topic><topic>Medical Microbiology</topic><topic>Metabolism</topic><topic>Microbiology</topic><topic>Microorganisms</topic><topic>Miscellaneous</topic><topic>Mission oriented research</topic><topic>Original Paper</topic><topic>pH effects</topic><topic>Physiology</topic><topic>Physiology and metabolism</topic><topic>Plant Sciences</topic><topic>Soil Science &amp; Conservation</topic><topic>Standard deviation</topic><topic>Stress, Physiological</topic><topic>Temperature</topic><topic>Temperature effects</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lahtvee, Petri-Jaan</creatorcontrib><creatorcontrib>Valgepea, Kaspar</creatorcontrib><creatorcontrib>Nahku, Ranno</creatorcontrib><creatorcontrib>Abner, Kristo</creatorcontrib><creatorcontrib>Adamberg, Kaarel</creatorcontrib><creatorcontrib>Vilu, Raivo</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Virology and AIDS Abstracts</collection><collection>Health &amp; Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health &amp; Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health &amp; Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Science Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><collection>MEDLINE - Academic</collection><jtitle>Antonie van Leeuwenhoek</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lahtvee, Petri-Jaan</au><au>Valgepea, Kaspar</au><au>Nahku, Ranno</au><au>Abner, Kristo</au><au>Adamberg, Kaarel</au><au>Vilu, Raivo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Steady state growth space study of Lactococcus lactis in D-stat cultures</atitle><jtitle>Antonie van Leeuwenhoek</jtitle><stitle>Antonie van Leeuwenhoek</stitle><addtitle>Antonie Van Leeuwenhoek</addtitle><date>2009-11-01</date><risdate>2009</risdate><volume>96</volume><issue>4</issue><spage>487</spage><epage>496</epage><pages>487-496</pages><issn>0003-6072</issn><eissn>1572-9699</eissn><coden>ANLEDR</coden><abstract>Growth space of Lactococcus lactis subsp. lactis IL1403 was studied at constant growth rate using D-stat cultivation technique. Starting from steady state conditions in a chemostat culture (μ = 0.2 h⁻¹), the pH and/or temperature were continuously changed in the range of 5.4-6.4 and 26-34°C, respectively, followed by the return to the initial environmental conditions. Based on substrate consumption and product formation yields and expression changes of 1,920 genes, it was shown that changes of physiological state were not dependent on the direction of movement (from pH 6.3 to 5.4 or from 5.4 to 6.3), showing that quasi steady state values in D-stat corresponded to the steady state values in chemostats. Relative standard deviation of growth characteristics in triplicate D-stat experiments was below 10%. Continuing the experiment and reestablishing initial growth conditions revealed in average 7% difference (hysteresis) in growth characteristics when comparing chemostat steady state cultures prior and after the change of environmental conditions. Similarly, shifts were also seen at gene expression levels. The large amount of quantitatively reliable data obtained in this study provided a new insight into dynamic properties of bacterial physiology, and can be used for describing the growth space of microorganisms by modeling cell metabolism.</abstract><cop>Dordrecht</cop><pub>Dordrecht : Springer Netherlands</pub><pmid>19603284</pmid><doi>10.1007/s10482-009-9363-2</doi><tpages>10</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0003-6072
ispartof Antonie van Leeuwenhoek, 2009-11, Vol.96 (4), p.487-496
issn 0003-6072
1572-9699
language eng
recordid cdi_proquest_miscellaneous_734184536
source MEDLINE; SpringerLink Journals - AutoHoldings
subjects Bacteria
Bacterial physiology
Bacteriology
Biological and medical sciences
Biology of microorganisms of confirmed or potential industrial interest
Biomedical and Life Sciences
Biotechnology
Cell culture
Chemostats
Continuous culture
Cultivation techniques
Data processing
Environmental changes
Environmental conditions
Fundamental and applied biological sciences. Psychology
Gene Expression Profiling
Growth conditions
Growth rate
Hydrogen-Ion Concentration
Hysteresis
Lactococcus lactis
Lactococcus lactis - growth & development
Life Sciences
Medical Microbiology
Metabolism
Microbiology
Microorganisms
Miscellaneous
Mission oriented research
Original Paper
pH effects
Physiology
Physiology and metabolism
Plant Sciences
Soil Science & Conservation
Standard deviation
Stress, Physiological
Temperature
Temperature effects
title Steady state growth space study of Lactococcus lactis in D-stat cultures
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-17T10%3A15%3A52IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Steady%20state%20growth%20space%20study%20of%20Lactococcus%20lactis%20in%20D-stat%20cultures&rft.jtitle=Antonie%20van%20Leeuwenhoek&rft.au=Lahtvee,%20Petri-Jaan&rft.date=2009-11-01&rft.volume=96&rft.issue=4&rft.spage=487&rft.epage=496&rft.pages=487-496&rft.issn=0003-6072&rft.eissn=1572-9699&rft.coden=ANLEDR&rft_id=info:doi/10.1007/s10482-009-9363-2&rft_dat=%3Cproquest_cross%3E1884175811%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=230205771&rft_id=info:pmid/19603284&rfr_iscdi=true