@article{fdi:010048227, title = {{E}ffect of {O}-2 concentrations on {S}ulfolobus solfataricus {P}2}, author = {{S}imon, {G}w{\'e}nola and {W}alther, {J}. and {Z}abeti, {N}athalie and {C}ombet-{B}lanc, {Y}annick and {A}uria, {R}ichard and van der {O}ost, {J}. and {C}asalot, {L}aurence}, editor = {}, language = {{ENG}}, abstract = {{S}ulfolobus solfataricus {P}2 was grown aerobically at various {O}-2 concentrations. {B}ased on growth parameters in microcosms, four types of behavior could be distinguished. {A}t 35% {O}-2 (v/v; gas phase), the cultures did not grow, indicating a lethal dose of oxygen. {F}or 26-32% {O}-2, the growth was significantly affected compared with the reference (21%), suggesting a moderate toxicity by {O}-2. {F}or 16-24% {O}-2, standard growth was observed. {F}or 1.5-15% {O}-2, growth was comparable with the reference, but the yield on {O}-2 indicated a more efficient use of oxygen. {T}hese results indicate that {S}. solfataricus {P}2 grows optimally in the range of 1.5-24% {O}-2, most likely by adjusting its energy-transducing machinery. {T}o gain some insight into control of the respiratory system, transcriptomes of the strain cultivated at different {O}-2 concentrations, corresponding to each behavior (1.5%, 21% and 26%), were compared using a {DNA} microarray approach. {I}t showed differential expression of several genes encoding terminal oxidases, indicating an adaptation of the strain's respiratory system in response to fluctuating oxygen concentrations.}, keywords = {archaea ; {S}ulfolobus solfataricus ; oxygen ; physiology ; regulation of ; transcription}, booktitle = {}, journal = {{F}ems {M}icrobiology {L}etters}, volume = {299}, numero = {2}, pages = {255--260}, ISSN = {0378-1097}, year = {2009}, DOI = {10.1111/j.1574-6968.2009.01759.x}, URL = {https://www.documentation.ird.fr/hor/fdi:010048227}, }