2015
DOI: 10.1038/ismej.2015.179
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Effects of low temperature on tropical and temperate isolates of marine Synechococcus

Abstract: Temperature is an important factor influencing the distribution of marine picocyanobacteria. However, molecular responses contributing to temperature preferences are poorly understood in these important primary producers. We compared the temperature acclimation of a tropical Synechococcus strain WH8102 with temperate strain BL107 at 18°C relative to 22°C and examined their global protein expression, growth patterns, photosynthetic efficiency and lipid composition.Global protein expression profiles demonstrate … Show more

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Cited by 37 publications
(45 citation statements)
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“…When all these processes are summed, the total cell content of unsaturated acyl chains significantly increases from about 35% at 30°C to 55% at 16°C. These are values comparable to the study of Varkey and colleagues (), who measured the percentage of unsaturated fatty acids in three Synechococcus strains acclimated to two different temperatures. These mechanisms differ from those known in freshwater cyanobacteria since so far there has been no positive evidence for a desaturation activity on DGDG in the latter organisms (Sato and Wada, ).…”
Section: Discussionmentioning
confidence: 97%
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“…When all these processes are summed, the total cell content of unsaturated acyl chains significantly increases from about 35% at 30°C to 55% at 16°C. These are values comparable to the study of Varkey and colleagues (), who measured the percentage of unsaturated fatty acids in three Synechococcus strains acclimated to two different temperatures. These mechanisms differ from those known in freshwater cyanobacteria since so far there has been no positive evidence for a desaturation activity on DGDG in the latter organisms (Sato and Wada, ).…”
Section: Discussionmentioning
confidence: 97%
“…As for DesC4, among the phylogenetic clades whose thermal niche has been studied (Pittera et al ., ; Farrant et al ., ), it is only absent in clades adapted to warm environments (clades II and III). Thus, similarly to DesC2 in freshwater cyanobacteria, DesC4 could well provide additional Δ9 desaturation capacity, which would be induced under cold conditions (Varkey et al ., ). The fact that DesC4 is present in most Synechococcus strains (except clades II and III), including halotolerant members of subcluster 5.2, tends to support the hypothesis that this gene has been lost in the warm‐adapted clades II and III, rather than gained in all other clades.…”
Section: Discussionmentioning
confidence: 97%
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