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Statements

Subject Item
n2:RIV%2F60076658%3A12310%2F11%3A43880521%21RIV12-GA0-12310___
rdf:type
skos:Concept n9:Vysledek
dcterms:description
The present study focuses on a description of the biodiversity of subaerial phototrophic biofilms occurring on archaeological surfaces in Maltese hypogean environments, namely St Paul's, St Agatha's and Abbatija tad-Dejr Catacombs, all situated in Rabat and the ancient Hal Saflieni Hypogeum at Paola, Malta. Direct observation of the biofilms, carried out using light (LM), epifluorescent and confocal laser scanning microscopy (CLSM), allowed the description of the major cyanobacterial and microalgal taxa, and also the associated heterotrophic microorganisms, mainly actinobacteria. Some biofilm microorganisms were able to grow in culture and this allowed the isolation of cyanobacterial, microalgal and chemoorganotrophic bacterial strains. Thylakoid arrangement and cell division were examined using transmission electron microscopy (TEM). The cytomorphology of isolated microorganisms was described. The undisputed phototrophic protagonists in these subaerial biofilms of Maltese hypogean environments were the non heterocytous (Oscillatorialean) cyanobacteria. In order to increase the limited data available for Leptolyngbya spp. from aerophytic epilithic biofilms in catacombs, the 16S rRNA genes of isolated Leptolyngbya strains were sequenced and compared with those obtained for related strains. Phylogenetic trees of cyanobacterial 16S rRNA sequences were constructed using parsimony and Bayesian analyses. Microorganisms forming biofilms in Maltese hypogea were found to be similar, both cytomorphologically and genetically, to those colonising lithic surfaces of caves and catacombs in other Mediterranean countries. The present study focuses on a description of the biodiversity of subaerial phototrophic biofilms occurring on archaeological surfaces in Maltese hypogean environments, namely St Paul's, St Agatha's and Abbatija tad-Dejr Catacombs, all situated in Rabat and the ancient Hal Saflieni Hypogeum at Paola, Malta. Direct observation of the biofilms, carried out using light (LM), epifluorescent and confocal laser scanning microscopy (CLSM), allowed the description of the major cyanobacterial and microalgal taxa, and also the associated heterotrophic microorganisms, mainly actinobacteria. Some biofilm microorganisms were able to grow in culture and this allowed the isolation of cyanobacterial, microalgal and chemoorganotrophic bacterial strains. Thylakoid arrangement and cell division were examined using transmission electron microscopy (TEM). The cytomorphology of isolated microorganisms was described. The undisputed phototrophic protagonists in these subaerial biofilms of Maltese hypogean environments were the non heterocytous (Oscillatorialean) cyanobacteria. In order to increase the limited data available for Leptolyngbya spp. from aerophytic epilithic biofilms in catacombs, the 16S rRNA genes of isolated Leptolyngbya strains were sequenced and compared with those obtained for related strains. Phylogenetic trees of cyanobacterial 16S rRNA sequences were constructed using parsimony and Bayesian analyses. Microorganisms forming biofilms in Maltese hypogea were found to be similar, both cytomorphologically and genetically, to those colonising lithic surfaces of caves and catacombs in other Mediterranean countries.
dcterms:title
The biodiversity of subaerophytic phototrophic biofilms from Maltese hypogea The biodiversity of subaerophytic phototrophic biofilms from Maltese hypogea
skos:prefLabel
The biodiversity of subaerophytic phototrophic biofilms from Maltese hypogea The biodiversity of subaerophytic phototrophic biofilms from Maltese hypogea
skos:notation
RIV/60076658:12310/11:43880521!RIV12-GA0-12310___
n9:predkladatel
n10:orjk%3A12310
n3:aktivita
n4:Z n4:P
n3:aktivity
P(GA206/08/0318), Z(MSM6007665801)
n3:cisloPeriodika
1
n3:dodaniDat
n18:2012
n3:domaciTvurceVysledku
n14:6996566
n3:druhVysledku
n7:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n20:predkladatel
n3:idSjednocenehoVysledku
188286
n3:idVysledku
RIV/60076658:12310/11:43880521
n3:jazykVysledku
n12:eng
n3:klicovaSlova
subaerophytic; Stigonematales; phototrophic biofilms; Oscillatoriales; microalgae; Leptolyngbya; hypogea; cyanoprokaryotes; cyanobacteria; catacombs
n3:klicoveSlovo
n6:catacombs n6:cyanoprokaryotes n6:Oscillatoriales n6:cyanobacteria n6:Leptolyngbya n6:hypogea n6:microalgae n6:subaerophytic n6:Stigonematales n6:phototrophic%20biofilms
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[12C1ED4A7D07]
n3:nazevZdroje
Fottea
n3:obor
n19:EF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
5
n3:projekt
n15:GA206%2F08%2F0318
n3:rokUplatneniVysledku
n18:2011
n3:svazekPeriodika
11
n3:tvurceVysledku
Shubert, Elliot Albertano, Patrizia Kaštovský, Jan Zammit, Gabrielle Billi, Daniela
n3:wos
000291511200018
n3:zamer
n16:MSM6007665801
s:issn
1802-5439
s:numberOfPages
15
n13:organizacniJednotka
12310