{"id":6144,"date":"2026-10-19T09:48:33","date_gmt":"2026-10-19T09:48:33","guid":{"rendered":"https:\/\/phd.hi.is\/doktorsvorn\/doktorsvorn-i-liffraedi-stephen-knobloch\/"},"modified":"2026-10-19T09:48:33","modified_gmt":"2026-10-19T09:48:33","slug":"doktorsvorn-i-liffraedi-stephen-knobloch","status":"publish","type":"phd_defence","link":"https:\/\/phd.hi.is\/en\/doktorsvorn\/doktorsvorn-i-liffraedi-stephen-knobloch\/","title":{"rendered":"Doktorsv\u00f6rn \u00ed l\u00edffr\u00e6\u00f0i – Stephen Knobloch"},"content":{"rendered":"
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Doktorsefni:<\/strong>\u00a0Stephen Knobloch<\/p>\n

Heiti ritger\u00f0ar:<\/strong>\u00a0Saml\u00edfs\u00f6rverur \u00ed sj\u00e1varsvampinum Halichondria panicea (e. Host-microbe symbiosis in the marine sponge Halichondria panicea)<\/p>\n

Andm\u00e6lendur:<\/strong>
<\/strong>Dr. Detmer Sipkema, d\u00f3sent \u00ed vistfr\u00e6\u00f0i sj\u00e1var\u00f6rvera vi\u00f0 h\u00e1sk\u00f3lann \u00ed Wageningen \u00ed Hollandi
Dr. \u00d3lafur Sigmar Andr\u00e9sson, pr\u00f3fessor \u00ed erf\u00f0afr\u00e6\u00f0i vi\u00f0 L\u00edf- og umhverfisv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands.<\/p>\n

Umsj\u00f3narkennari: <\/strong>Dr. Eva Benediktsd\u00f3ttir, d\u00f3sent \u00ed \u00f6rverufr\u00e6\u00f0i vi\u00f0 L\u00edf- og umhverfisv\u00edsindadeild H\u00e1sk\u00f3la \u00cdslands<\/p>\n

Lei\u00f0beinandi:<\/strong>\u00a0Dr. Vigg\u00f3 \u00de\u00f3r Marteinsson, pr\u00f3fessor vi\u00f0 Matv\u00e6la- og n\u00e6ringarfr\u00e6\u00f0ideild H\u00e1sk\u00f3la \u00cdslands og faglegur lei\u00f0togi hj\u00e1 Mat\u00eds.<\/p>\n

Einnig \u00ed doktorsnefnd:<\/strong>
<\/strong>Dr. Ragnar J\u00f3hannsson, svi\u00f0sstj\u00f3ri \u00ed fiskeldi og fiskir\u00e6kt hj\u00e1 Hafranns\u00f3knastofnun<\/p>\n

Doktorsv\u00f6rn st\u00fdrir:<\/strong>\u00a0Dr. Sn\u00e6bj\u00f6rn P\u00e1lsson, pr\u00f3fessor og varadeildarforseti L\u00edf- og umhverfisv\u00edsindadeildar H\u00e1sk\u00f3la \u00cdslands.<\/p>\n

\u00c1grip<\/strong><\/p>\n

Svampar (phylum Porifera) eru taldir ein af elstu n\u00falifandi fylkingum d\u00fdrar\u00edkisins. N\u00e1in tengsl \u00feeirra vi\u00f0 \u00f6rverur gera \u00fe\u00e1 \u00e1hugaver\u00f0a og heppilega til ranns\u00f3kna \u00e1 fyrstu ger\u00f0um saml\u00edfis d\u00fdra og \u00f6rvera og til a\u00f0 auka almennt skilning okkar \u00e1 \u00feessu var\u00f0veitta samspili og virkni \u00feess. A\u00f0 auki framlei\u00f0a margir svampar og saml\u00edfis\u00f6rverur \u00feeirra l\u00edfvirk efnasamb\u00f6nd sem gera \u00fe\u00e1 \u00e1hugaver\u00f0a fyrir l\u00edft\u00e6kni og lyfjai\u00f0na\u00f0inn.\u00a0<\/p>\n

\u00cd \u00feessari ranns\u00f3kn var fj\u00f6lbreytileiki saml\u00edfis\u00f6rvera H. panicea svamps, sem tekin var \u00far \u00edslensku sj\u00e1varumhverfi, sko\u00f0a\u00f0ur me\u00f0 merkigenara\u00f0greiningu, auk ra\u00f0greiningar genamengja (metagenome) og erf\u00f0amengja (genome) r\u00e6kta\u00f0ra bakter\u00eda. S\u00fdnt er fram \u00e1 a\u00f0 H. Panicea, \u00far \u00edslensku umhverfi, h\u00fdsir eina r\u00edkjandi bakter\u00edutegund. Tegundin sem f\u00e9kk heiti\u00f0 \u201cCandidatus Halicondribacter symbioticus\u201d, er einnig til sta\u00f0ar \u00ed \u00f6\u00f0rum H. panicea sv\u00f6mpum sem rannsaka\u00f0ir hafa veri\u00f0 fr\u00e1 mismunandi st\u00f6\u00f0um og \u00f3h\u00e1\u00f0 \u00e1rst\u00ed\u00f0um. Hins vegar eru a\u00f0rar samb\u00fdlis\u00f6rverur \u00f3skilyrtar og meira bundnar vi\u00f0 sta\u00f0 og t\u00edma. Greining \u00e1 genamengi r\u00edkjandi skilyrtu bakter\u00edunnar s\u00fdnir fram \u00e1 a\u00f0 algeng st\u00fdrigen vantar \u00ed erf\u00f0amengi hennar. \u00dea\u00f0 er \u00ed samr\u00e6mi vi\u00f0 hi\u00f0 skilyrta saml\u00edfisform en skortur \u00e1 st\u00fdrigenum er algengur \u00ed \u00e1kve\u00f0num genafj\u00f6lskyldum tengdum saml\u00edfisforminu og v\u00f6rnum \u00feess. Jafnvel \u00fe\u00f3 a\u00f0 genaklasi fyrir sm\u00ed\u00f0i \u00e1 l\u00edfvirka efninu bacteriocin s\u00e9 til sta\u00f0ar \u00ed \u201cCandidatus Halichondribacter symbioticus\u201d vir\u00f0ist sem \u00fea\u00f0 komi ekki vi\u00f0 s\u00f6gu vi\u00f0 framlei\u00f0slu l\u00edfvirkra efna e\u00f0a \u201esecondary metabolites\u201d.
Saml\u00edfis\u00f6rveran „Ca. H. symbioticus“ \u00ed sj\u00e1varsvampinum H. panicea er heppilegt m\u00f3del til ranns\u00f3kna \u00e1 samspili saml\u00edfis\u00f6rvera og d\u00fdra. Ni\u00f0urst\u00f6\u00f0urnar \u00far \u00feessari ranns\u00f3kn leggja \u00fev\u00ed grunninn a\u00f0 framt\u00ed\u00f0arranns\u00f3knum \u00e1 sl\u00edku samspili.<\/p>\n

Um doktorsefni\u00f0<\/strong><\/p>\n

Stephen Knobloch f\u00e6ddist \u00e1ri\u00f0 1987 \u00ed Toronto \u00ed Kanada. Hann lauk n\u00e1mi \u00ed \u201eApplied Sciences \u201c fr\u00e1 H\u00e1sk\u00f3lanum \u00ed Bremerhaven \u00ed \u00de\u00fdskalandi og hlaut BSc gr\u00e1\u00f0u \u00ed sj\u00e1vart\u00e6kni (Maritime Technologies), me\u00f0 \u00e1herslu \u00ed sj\u00e1varl\u00edft\u00e6kni. Hann stunda\u00f0i framhaldsn\u00e1m vi\u00f0 H\u00e1sk\u00f3lann \u00ed Rostock \u00ed \u00de\u00fdskalandi og \u00fatskrifa\u00f0ist \u00fea\u00f0an me\u00f0 meistaragr\u00e1\u00f0u (MSc) \u00ed fiskeldi \u00e1ri\u00f0 2013.\u00a0
\u00c1ri\u00f0 2014 h\u00f3f hann doktorsn\u00e1m vi\u00f0 H\u00e1sk\u00f3la \u00cdslands sem styrk\u00feegi \u00ed Evr\u00f3puverkefninu \u201eBluePharmTrain\u201c \u00e1 vegum Marie Curie ITN (Innovative Training Networks). Stephen hefur kennt \u00ed haustn\u00e1mskei\u00f0um \u00ed meistaran\u00e1mi vi\u00f0 Matv\u00e6la- og n\u00e6ringarfr\u00e6\u00f0ideild H\u00cd fr\u00e1 2016 til 2018 og er verkefnastj\u00f3ri AVS-verkefnisins \u201eFishGutHealth\u201c fr\u00e1 \u00e1rinu 2017.\u00a0<\/p>\n

Stephen b\u00fdr \u00ed Reykjav\u00edk me\u00f0 konu sinni Rebeccu og tveimur b\u00f6rnum, sem eru Sascha f\u00e6ddur 2014 og Nora f\u00e6dd 2017, b\u00e6\u00f0i \u00e1 \u00cdslandi.<\/p>\n

Vi\u00f0bur\u00f0ur \u00e1 facebook<\/a><\/strong><\/p>\n<\/div><\/div>","protected":false},"featured_media":2059,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_phd_date_start":"2019-05-27T13:00:00+00:00","_phd_date_end":"2019-05-27T15:00:00+00:00","_phd_location":"Askja Stofa 132","_phd_admission":"Allir velkomnir","_phd_thesis_title":"Saml\u00edfs\u00f6rverur \u00ed sj\u00e1varsvampinum Halichondria panicea (e. Host-microbe symbiosis in the marine sponge Halichondria panicea)","_phd_source_url":"https:\/\/gamli.hi.is\/vidburdir\/doktorsvorn_i_liffraedi_stephen_knobloch","_phd_source_node_id":"317021","_phd_source_type":"vidburdir","_phd_member_id":632,"footnotes":""},"phd_school":[96,93],"phd_discipline":[97],"class_list":["post-6144","phd_defence","type-phd_defence","status-publish","has-post-thumbnail","hentry","phd_school-lif-og-umhverfisvisindadeild","phd_school-verkfraedi-og-natturuvisindasvid","phd_discipline-phd-i-liffraedi"],"_links":{"self":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6144","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence"}],"about":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/types\/phd_defence"}],"version-history":[{"count":0,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_defence\/6144\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media\/2059"}],"wp:attachment":[{"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/media?parent=6144"}],"wp:term":[{"taxonomy":"phd_school","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_school?post=6144"},{"taxonomy":"phd_discipline","embeddable":true,"href":"https:\/\/phd.hi.is\/en\/wp-json\/wp\/v2\/phd_discipline?post=6144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}