Photosynthetic and leaf anatomical characteristics of Castanea sativa: a comparison between in vitro and nursery plants

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dc.contributor.authorSaez, P. L.
dc.contributor.authorBravo, L. A.
dc.contributor.authorSaez, K. L.
dc.contributor.authorSanchez-Olate, M.
dc.contributor.authorLatsague Vidal, Mirtha
dc.contributor.authorRios, D. G.
dc.date2012
dc.date.accessioned2021-04-30T16:43:36Z
dc.date.available2021-04-30T16:43:36Z
dc.description.abstractThe anatomic and functional leaf characteristics related to photosynthetic performance of Castanea sativa growing in vitro and in nursery were compared. The irradiance saturated photosynthesis in in vitro grown plantlets was significantly lower compared to nursery plants (65 vs. 722 mu mol m(-2) s(-1)). The maximum photosynthetic rate (P-Nmax) was 4.0 and 10.0 mu mol(CO2) m(-2) s(-1) in in vitro microshoots and nursery plant leaves, respectively. Carboxylation efficiency (C-E) and electron transport rate (ETR) were three-folds higher in nursery plants than in microshoots. The non-photochemical quenching (NPQ) was saturated at 80 mu mol m(-2) s(-1) in microshoots suggesting limited photoprotection by thermal dissipation. The microshoots had wide open, spherical stomata and higher stomatal density than nursery plants and they had almost no epicuticular wax. Consequently, the microshoots had high stomatal conductance and high transpiration rate. These anatomic and functional leaf characteristics are likely major causes of the low survival rates of plantlets after ex vitro transfer.
dc.identifier.citationBIOLOGIA PLANTARUM,Vol.56,15-24,2012
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/3367
dc.language.isoen
dc.publisherACAD SCIENCES CZECH REPUBLIC. INST EXPERIMENTAL BOTANY
dc.sourceBIOLOGIA PLANTARUM
dc.subject.englishchloroplasts
dc.subject.englishfluorescence
dc.subject.englishmicropropagation
dc.subject.englishnet photosynthetic rate
dc.subject.englishstomata
dc.subject.englishtranspiration rate
dc.titlePhotosynthetic and leaf anatomical characteristics of Castanea sativa: a comparison between in vitro and nursery plants
dc.typeArticle
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