Desiccation tolerance in the vegetative tissues of the fern Mohria caffrorum is seasonally regulated

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dc.contributor.authorFarrant, Jill M
dc.contributor.authorLehner, Arnaud
dc.contributor.authorCooper, Keren
dc.contributor.authorWiswedel, Stefan
dc.date.accessioned2016-07-27T11:43:06Z
dc.date.available2016-07-27T11:43:06Z
dc.date.issued2009
dc.date.updated2016-07-12T17:08:42Z
dc.description.abstractAs there is limited information on the mechanisms of vegetative desiccation tolerance in pteridophytes, we undertook a comprehensive anatomical, ultrastructural, physiological and biochemical study on the fern Mohria caffrorum. Our data show that this species is desiccation-tolerant during the dry season, and desiccation-sensitive in the rainy season. This system allows the verification of protection mechanisms by comparison of tolerant and sensitive tissues of the same species at the same developmental age. Tolerant fronds acquire protection mechanisms during drying that are mostly similar to those reported for angiosperms. These include: (i) chlorophyll masking by abaxial scales and frond curling; (ii) increased antioxidant capacity that is maintained in dry tissues; (iii) mechanical stabilization of vacuoles in the dry state; (iv) de novo production of heat stable proteins (at least one identified as a putative chaperonin); (v) accummulation of protective carbohydrates (sucrose, raffinose family oligosaccharides and cyclitols). This study has implications for the biotechnological production of drought-tolerant crops, and allows speculation on the evolution of vegetative desiccation tolerance.en_ZA
dc.identifierhttp://dx.doi.org/10.1111/j.1365-313X.2008.03673.x
dc.identifier.apacitationFarrant, J. M., Lehner, A., Cooper, K., & Wiswedel, S. (2009). Desiccation tolerance in the vegetative tissues of the fern Mohria caffrorum is seasonally regulated. <i>Plant Journal</i>, http://hdl.handle.net/11427/20883en_ZA
dc.identifier.chicagocitationFarrant, Jill M, Arnaud Lehner, Keren Cooper, and Stefan Wiswedel "Desiccation tolerance in the vegetative tissues of the fern Mohria caffrorum is seasonally regulated." <i>Plant Journal</i> (2009) http://hdl.handle.net/11427/20883en_ZA
dc.identifier.citationFarrant, J. M., Lehner, A., Cooper, K., & Wiswedel, S. (2009). Desiccation tolerance in the vegetative tissues of the fern Mohria caffrorum is seasonally regulated. The Plant Journal, 57(1), 65-79.en_ZA
dc.identifier.issn0960-7412en_ZA
dc.identifier.ris TY - Journal Article AU - Farrant, Jill M AU - Lehner, Arnaud AU - Cooper, Keren AU - Wiswedel, Stefan AB - As there is limited information on the mechanisms of vegetative desiccation tolerance in pteridophytes, we undertook a comprehensive anatomical, ultrastructural, physiological and biochemical study on the fern Mohria caffrorum. Our data show that this species is desiccation-tolerant during the dry season, and desiccation-sensitive in the rainy season. This system allows the verification of protection mechanisms by comparison of tolerant and sensitive tissues of the same species at the same developmental age. Tolerant fronds acquire protection mechanisms during drying that are mostly similar to those reported for angiosperms. These include: (i) chlorophyll masking by abaxial scales and frond curling; (ii) increased antioxidant capacity that is maintained in dry tissues; (iii) mechanical stabilization of vacuoles in the dry state; (iv) de novo production of heat stable proteins (at least one identified as a putative chaperonin); (v) accummulation of protective carbohydrates (sucrose, raffinose family oligosaccharides and cyclitols). This study has implications for the biotechnological production of drought-tolerant crops, and allows speculation on the evolution of vegetative desiccation tolerance. DA - 2009 DB - OpenUCT DP - University of Cape Town J1 - Plant Journal LK - https://open.uct.ac.za PB - University of Cape Town PY - 2009 SM - 0960-7412 T1 - Desiccation tolerance in the vegetative tissues of the fern Mohria caffrorum is seasonally regulated TI - Desiccation tolerance in the vegetative tissues of the fern Mohria caffrorum is seasonally regulated UR - http://hdl.handle.net/11427/20883 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/20883
dc.identifier.vancouvercitationFarrant JM, Lehner A, Cooper K, Wiswedel S. Desiccation tolerance in the vegetative tissues of the fern Mohria caffrorum is seasonally regulated. Plant Journal. 2009; http://hdl.handle.net/11427/20883.en_ZA
dc.languageengen_ZA
dc.publisherBlackwell Publishingen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.sourcePlant Journalen_ZA
dc.source.urihttp://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-313X
dc.titleDesiccation tolerance in the vegetative tissues of the fern Mohria caffrorum is seasonally regulateden_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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