Semi-viviparous Embryo Development and Dehydrin Expression in the Mangrove Rhizophora Mucronata Lam.

Simple item page
dc.contributor.authorTibazarwa, Flora I.
dc.contributor.authorNitsch, L. M. C.
dc.contributor.authorWolters-Arts, M. M. C.
dc.contributor.authorMariani, Celestina
dc.contributor.authorDerksen, J. W. M.
dc.date.accessioned2016-09-21T17:03:38Z
dc.date.available2016-09-21T17:03:38Z
dc.date.issued2010
dc.description.abstractRhizophora mucronata Lam. is a tropical mangrove with semi-viviparous (cotyledon body protrusion before shedding), non-quiescent and non-desiccating (recalcitrant) seeds. As recalcitrance has been thought to relate to the absence of desiccation-related proteins such as dehydrins, we for the first time systematically described and classified embryogenesis in R. mucronata and assessed the presence of dehydrin-like proteins. Embryogenesis largely follows the classic pattern till stage eight, the torpedo stage, with the formation of a cotyledonary body. Ovule and embryo express radical adaptations to semi-vivipary in the saline environment: (1) A large, highly vacuolated and persistent endosperm without noticeable food reserves that envelopes the developing embryo. (2) Absence of vascular tissue connections between embryo and maternal tissue, but, instead, transfer layers in between endosperm and integument and endosperm and embryo. Dehydrin-like proteins (55–65 kDa) were detected by the Western analysis, in the ovules till stage 10 when the integuments are dehisced. An additional 50 kDa band was detected at stages 6–8. Together these results suggest a continuous flow of water with nutrients from the integument via the endosperm to the embryo, circumventing the vascular route and probably suppressing the initially induced dehydrin expression.en_US
dc.identifier.citationIsmail, F.A., Nitsch, L.M., Wolters-Arts, M.M., Mariani, C. and Derksen, J.W., 2010. Semi-viviparous embryo development and dehydrin expression in the mangrove Rhizophora mucronata Lam. Sexual plant reproduction, 23(2), pp.95-103.en_US
dc.identifier.doi10.1007/s00497-009-0127-y
dc.identifier.urihttp://hdl.handle.net/20.500.11810/4102
dc.language.isoenen_US
dc.subjectDehydrinsen_US
dc.subjectEmbryo developmenten_US
dc.subjectRhizophora mucronataen_US
dc.subjectSemi-viviparyen_US
dc.titleSemi-viviparous Embryo Development and Dehydrin Expression in the Mangrove Rhizophora Mucronata Lam.en_US
dc.typeJournal Article, Peer Revieweden_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Semi-viviparous embryo development and dehydrin expression.pdf
Size:
4.34 MB
Format:
Adobe Portable Document Format
Description:
Full text
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Department of Botany