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Morphological, physiological and oxidative stress markers during acclimatization and field transfer of micropropagated Tuberaria major plants

2013Journal article Restricted access
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dc.contributor.authorOsório, Maria Leonor
dc.contributor.authorGonçalves, Sandra
dc.contributor.authorCoelho, N.
dc.contributor.authorOsório, Júlio
dc.contributor.authorRomano, Anabela
dc.date.accessioned2015-06-18T10:12:33Z
dc.date.available2015-06-18T10:12:33Z
dc.date.issued2013
dc.description.abstractTuberaria major (Willk.) P. Silva and Rozeira is a critically-endangered rock rose species endemic to Portugal. Because the species needs to be preserved, this study evaluated the morphological and physiological traits of micropropagated T. major plants during acclimatization and field transfer. There were no significant differences between wild and micropropagated plants in the field, although the latter underwent significant changes during acclimatization. Leaf pubescence and leaf mass per area increased during acclimatization whereas the chlorophyll content and chlorophyll/carotenoid ratio declined to eventually match those of wild plants. Stomatal conductance (g(s)) and transpiration rates (E) also declined substantially during acclimatization, thus preventing uncontrolled wilting. Photosynthetic rate (P-N) was initially negative but increased during the later stages of acclimatization. Maximum quantum yield of PSII (F-v/F-m) remained constant at 0.78-0.85, showing that the plants were healthy and unstressed. PSII quantum efficiency (I center dot(PSII)) was initially low but increased during acclimatization along with photosynthetic performance as the energy partitioning in PSII was adjusted. This was balanced by the decline in non-regulated energy dissipation (I center dot(NO)) from an initially high value. Electrolyte leakage and malondialdehyde content remained constant at similar levels in both groups of plants, but H2O2 levels were higher in the field, perhaps indicating the early induction of antioxidant defense systems. The present study shows that T. major has enough phenotypic plasticity to adapt to changing environments and that the procedure described herein can be used for the restoration and preservation of this species.
dc.identifier.doihttps://dx.doi.org/10.1007/s11240-013-0343-x
dc.identifier.issn0167-6857
dc.identifier.otherAUT: ARO01015; JOS01477;
dc.identifier.urihttp://hdl.handle.net/10400.1/6393
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer
dc.relation.isbasedonP-006-75K
dc.titleMorphological, physiological and oxidative stress markers during acclimatization and field transfer of micropropagated Tuberaria major plants
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage97
oaire.citation.startPage85
oaire.citation.titlePlant Cell, Tissue and Organ Culture
oaire.citation.volume115
person.familyNameOsório
person.familyNameGonçalves
person.familyNameCoelho
person.familyNameOsório
person.familyNameRomano
person.givenNameMaria Leonor
person.givenNameSandra
person.givenNameNatacha
person.givenNameJúlio
person.givenNameAnabela
person.identifier.ciencia-id9F19-E3AE-2C59
person.identifier.ciencia-idC518-BDB3-E127
person.identifier.ciencia-id8A18-7E9A-3B0E
person.identifier.orcid0000-0002-7713-6497
person.identifier.orcid0000-0002-3038-4434
person.identifier.orcid0000-0003-4265-5622
person.identifier.orcid0000-0002-4054-4091
person.identifier.orcid0000-0002-7204-7428
person.identifier.ridM-6988-2017
person.identifier.scopus-author-id7006394339
person.identifier.scopus-author-id8583003200
person.identifier.scopus-author-id9938818600
person.identifier.scopus-author-id56249997600
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication796eec66-f451-4ebf-938a-866b703df3ea
relation.isAuthorOfPublicationa8b335b2-45cc-4578-89b0-153273014280
relation.isAuthorOfPublication43b2d7ec-049a-412b-ad22-c9db64cc572c
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relation.isAuthorOfPublicatione3343b60-17d3-4f5e-a2bf-06f26da69206
relation.isAuthorOfPublication.latestForDiscoverye3343b60-17d3-4f5e-a2bf-06f26da69206

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