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Gravitational Biology I : Gravity Sensing and Graviorientation in Microorganisms and Plants (2018)

Braun, Markus. ; Böhmer, Maik. ; Häder, Donat-Peter. ; [et al.]

Cham : : Springer International Publishing, | Cham : : Springer International Publishing :

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In: Springer eBooks

Type of Medium: Online Resource

Pages: XVII, 122 p. 36 illus., 24 illus. in color. , online resource.

ISBN: 9783319938943

Series Statement: SpringerBriefs in Space Life Sciences,

URL: http://dx.doi.org/10.1007/978-3-319-93894-3

DOI: 10.1007/978-3-319-93894-3

Language: English

Note: Chapter 1: Gravity Sensing, Graviorientation and Microgravity -- Chapter 2: Methods for Gravitational Biology Research -- Chapter 3: Gravitaxis in Flagellates and Ciliates -- Chapter 4: Gravitropism in Tip-Growing Rhizoids and Protonemata of Characean Algae -- Chapter 5: Gravitropism in Fungi, Mosses and Ferns -- Chapter 6: Gravitropism in Higher Plants: Cellular Aspects -- Chapter 7: Gravitropism in Higher Plants: Molecular Aspects -- Chapter 8: Bioregenerative Life Support Systems in Space Research.

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Structural and Functional Heat Stress Responses of Chloroplasts of Arabidopsis thaliana (2020)

Paul, Puneet ; Mesihovic, Anida ; Chaturvedi, Palak ; [et al.]

Molecular Diversity Preservation International (MDPI)

In: Genes. 2020; 11(6): 650. Published 2020 Jun 12. doi: 10.3390/genes11060650.

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Publication Date: 2020-06-12

Description: Temperature elevations constitute a major threat to plant performance. In recent years, much was learned about the general molecular mode of heat stress reaction of plants. The current research focuses on the integration of the knowledge into more global networks, including the reactions of cellular compartments. For instance, chloroplast function is central for plant growth and survival, and the performance of chloroplasts is tightly linked to the general status of the cell and vice versa. We examined the changes in photosynthesis, chloroplast morphology and proteomic composition posed in Arabidopsis thaliana chloroplasts after a single or repetitive heat stress treatment over a period of two weeks. We observed that the acclimation is potent in the case of repetitive application of heat stress, while a single stress results in lasting alterations. Moreover, the physiological capacity and its adjustment are dependent on the efficiency of the protein translocation process as judged from the analysis of mutants of the two receptor units of the chloroplast translocon, TOC64, and TOC33. In response to repetitive heat stress, plants without TOC33 accumulate Hsp70 proteins and plants without TOC64 have a higher content of proteins involved in thylakoid structure determination when compared to wild-type plants.

Electronic ISSN: 2073-4425

Topics: Biology

Published by Molecular Diversity Preservation International (MDPI)

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