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dc.contributor.authorEl-Mahrouk, MEen
dc.contributor.authorDewir, YHen
dc.contributor.authorMurthy, HNen
dc.contributor.authorRihan, HZen
dc.contributor.authorAl-Shmgani, HSen
dc.contributor.authorFuller, MPen
dc.date.accessioned2018-01-09T20:50:40Z
dc.date.available2018-01-09T20:50:40Z
dc.date.issued2016-05-01en
dc.identifier.issn0167-6903en
dc.identifier.urihttp://hdl.handle.net/10026.1/10529
dc.description.abstract

© 2015, Springer Science+Business Media Dordrecht. The effects of 35, 70 and 100 µmol m−2 s−1 photosynthetic photon flux density (PPFD) were investigated on ex vitro acclimatization of micropropagated Dieffenbachia plants. Various growth characteristics, photosynthetic parameters and activities of antioxidant enzymes and dehydrins (DHN) were investigated. Fresh and dry plant biomass, plant height and root length were highest under the highest PPFD (100 µmol m−2 s−1), but this treatment was responsible for a reduction in the number of leaves. Chlorophyll and carotenoid contents and net photosynthesis were also optimal in plants grown under the highest irradiance. Stomatal resistance, transpiration rate and Fv/Fm values decreased with the incremental light irradiance. Activities of the antioxidant enzymes superoxide dismutase, catalase and glutathione peroxidase were higher in the plants treated with 70 and 100 µmol m−2 s−1 PPFD. Accumulation of 55 kDa, 40 and 22 kDa DHN was observed in all light treatments. These results depict that lower PPFD (35 µmol m−2 s−1) was suitable for acclimatization of Dieffenbachia plants. High PPFD (>70 µmol m−2 s−1) induced accumulation of antioxidants and accumulation of DHN in the plants which reveals enhanced stress levels.

en
dc.format.extent29 - 37en
dc.language.isoenen
dc.titleEffect of photosynthetic photon flux density on growth, photosynthetic competence and antioxidant enzymes activity during ex vitro acclimatization of Dieffenbachia cultivarsen
dc.typeJournal Article
plymouth.issue1en
plymouth.volume79en
plymouth.publication-statusPublisheden
plymouth.journalPlant Growth Regulationen
dc.identifier.doi10.1007/s10725-015-0106-2en
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/00 Groups by role
plymouth.organisational-group/Plymouth/00 Groups by role/Academics
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA06 Agriculture, Veterinary and Food Science
dc.identifier.eissn1573-5087en
dc.rights.embargoperiodNot knownen
rioxxterms.versionofrecord10.1007/s10725-015-0106-2en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.typeJournal Article/Reviewen


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