By Esther Lubzens, Joan Cerda, Melody Clark
Many organisms have advanced the power to go into into and revive from a dormant nation. they could live to tell the tale for lengthy classes during this country (often even months to years), but can turn into responsive back inside of mins or hours. this can be, yet no longer inevitably, linked to desiccation. maintaining one’s physique and reviving it in destiny generations is a dream of mankind. up to now, despite the fact that, we now have did not find out how cells, tissues or whole organisms could be made dormant or be successfully revived at ambient temperatures. during this publication reviews on organisms, starting from aquatic cyanobacteria that produce akinetes to hibernating mammals, are offered, and demonstrate universal but in addition divergent physiological and molecular pathways for surviving in a dormant shape or for tolerating harsh environments. trying to examine the services linked to dormancy and the way they're regulated is likely one of the nice destiny demanding situations. Its relevance to the protection of cells and tissues is likely one of the key issues of this book.
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Additional info for Dormancy and Resistance in Harsh Environments
Kaplan-Levy et al. Sequencing of the N. punctiforme genome allowed the production of an open reading frame (ORF) microarray. This was then used to compare the global gene expression of N. punctiforme cultures with heterocyst and during the differentiation of hormogonia and zwf akinetes (Campbell et al. 2007). In that study, a single time point, 3 days into the akinete differentiation process was tested. During that time window, 255 genes were up-regulated, 41% of which encoded for characterized proteins.
Microbiol (Reading) 144: 1799–1805 Li R, Watanabe M, Watanabe MM (1997) Akinete formation in planktonic Anabaena spp (Cyanobacteria) by treatment with low temperature. J Phycol 33:576–584 2 Akinetes: Dormant Cells of Cyanobacteria 25 Livingstone D, Jaworski GHM (1980) The viability of akinetes of blue-green algae recovered from the sediments of Rostherne Mere. Br Phycol J 15:357–364 McBride MJ, Ensign JC (1987) Effects of intracellular trehalose content of Streptomyces griseus spores. J Bacteriol 169:4995–5001 Meeks JC, Campbell EL, Summers ML, Wong FCY (2002) Cellular differentiation in the cyanobacterium Nostoc punctiforme.
C) hap (Npun_R4070) a hormogonium/akinete-expressed protease homologous to the b-subunit group of the M16 zinc-dependent proteases complex. N. Kaplan-Levy et al. Sequencing of the N. punctiforme genome allowed the production of an open reading frame (ORF) microarray. This was then used to compare the global gene expression of N. punctiforme cultures with heterocyst and during the differentiation of hormogonia and zwf akinetes (Campbell et al. 2007). In that study, a single time point, 3 days into the akinete differentiation process was tested.
Dormancy and Resistance in Harsh Environments by Esther Lubzens, Joan Cerda, Melody Clark