Erratum

Matzke, Bettina; Schwarzmeier, Elisabeth; Loos, Eckhard

doi:10.1007/bf00197127

Planta

1990

DOI: 10.1007/bf00197127

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Erratum

Bettina Matzke¹,

Elisabeth Schwarzmeier²,

Eckhard Loos³

Abstract: Developmentally regulated expression in the bean ]?-phaseolin gene in tobacco seed. Proc. Natl. Acad. Sci. USA 82, 332~3324 Sturm, A., Chrispeels, M.J. (1986) The high mannose oligosaccharide of phytohemagglutinin is attached to Asparagine 12 and the modified oligosaccharide to Asparagine 60. Plant Physiol.

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Responses triggered in chloroplast of Chlorella variabilis NC64A by long-term association with Paramecium bursaria

Minaeva

Ermilova

2017

Protoplasma

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The unicellular green alga Chlorella variabilis NC64A is an endosymbiont of the ciliate Paramecium bursaria. The host's control, including the transfer of biochemical substrates from P. bursaria to C. variabilis, is involved in symbiotic relationships. C. variabilis NC64A that had been re-infected to P. bursaria for more than 1 year and isolated from the host showed higher chlorophyll levels compared to those in free-living cells. Unlike the host, the expression of C. variabilis NC64A heat shock 70 kDa protein was independent of establishment of endosymbiosis. In symbiotic cells, the levels of PII signal transduction protein (CvPII) that coordinate the central C/N anabolic metabolism were slightly higher than those in free-living cells. Furthermore, the environmental cues (light and host food bacteria availability) affected the abundance of CvPII, suggesting that synthesis of the protein was influenced by the host. Moreover, arginine concentrations in the symbiotic algae of P. bursaria were also controlled by the host's nutritional conditions. Together, our results imply that signal substrates and/or products of metabolism in host cells might act as messengers mediating the regulation of key events in symbiont cells.

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Responses triggered in chloroplast of Chlorella variabilis NC64A by long-term association with Paramecium bursaria

Minaeva

Ermilova

2017

Protoplasma

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Comparative genomics, transcriptomics, and physiology distinguish symbiotic from free-living Chlorella strains

et al. 2016

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symbiosomes (perialgal vacuoles) of different protozoans, and transfer a significant amount of their photosynthetically fixed carbon (e.g., maltose, fructose) to their non-photosynthetic partners [7,18,31]. In this context, symbiotic Chlorella spp. still require nutrients such as nitrogen, which they obtain from the host and then assimilate into the algal metabolome [33,50]. The mechanisms involved in these interactions have not been completely elucidated; however, the metabolic pathways involved in nitrogen (N) and carbon (C) utilization could be crucial physiological signatures of the endosymbiotic existence [32]. Therefore, elucidating how such processes work would open new avenues of research in the understanding of the molecular, cellular, and organismal adaptations that allow successful mutualism.

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Erratum

Cited by 2 publications

References 0 publications

Responses triggered in chloroplast of Chlorella variabilis NC64A by long-term association with Paramecium bursaria

Responses triggered in chloroplast of Chlorella variabilis NC64A by long-term association with Paramecium bursaria

Comparative genomics, transcriptomics, and physiology distinguish symbiotic from free-living Chlorella strains

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