Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/38462
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dc.contributor.authorJou, Y.en_US
dc.contributor.author顏宏真zh_TW
dc.contributor.authorWang, Y.L.en_US
dc.contributor.authorYen, H.C.E.en_US
dc.date2007zh_TW
dc.date.accessioned2014-06-06T08:00:50Z-
dc.date.available2014-06-06T08:00:50Z-
dc.identifier.issn1445-4408zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/38462-
dc.description.abstractThe halophyte Mesembryanthemum crytallinum L. (ice plant) is marked by giant epidermal bladder cells (EBC). The differentiation of pavement cells into EBC occurs at an early developmental stage. EBC occupy most of the surface area in the aerial parts of salt-stressed mature ice plants. A large vacuolar reservoir for ion and water storage plays an important role in salinity adaptation. To monitor the acidity of the vacuole at different developmental stages of EBC, peels from the abaxial surface were stained with a pH-sensitive dye, neutral red (NR). Presence of both NR-stained (acidic) and NR-unstained (neutral) EBC were found at the juvenile stage in ice plants. Continuous exposure to illumination decreased the acidity of the NR-stained cells. The EBC protein profile illustrated the prominent co-existence of highly acidic and basic proteins in these specialised cells. Major proteins that accumulate in EBC are involved in photosynthesis, sodium compartmentalisation, and defence. Numerous raphide crystals were found in well fertilised ice plants. Salt-stressed cells exhibited changes in the surface charge and element composition of raphide crystals. A disappearance of potassium in the high-salt grown crystals suggests that these crystals might serve as a potassium reservoir to maintain the Na+K+ homeostasis in this halophyte.en_US
dc.language.isoen_USzh_TW
dc.relationFunctional Plant Biologyen_US
dc.relation.ispartofseriesFunctional Plant Biology, Volume 34, Issue 4, Page(s) 353-359.en_US
dc.relation.urihttp://dx.doi.org/10.1071/fp06269en_US
dc.subjectcysteine proteinase (EC 3.4.22.-)en_US
dc.subjectmalate accumulationen_US
dc.subjectraphide crystalen_US
dc.subjectsalt stressen_US
dc.subjectcommon ice planten_US
dc.subjectcalcium-oxalateen_US
dc.subjectprocessing enzymeen_US
dc.subjectwater relationsen_US
dc.subjectabscisic-aciden_US
dc.subjecthigh salinityen_US
dc.subjecth+-atpaseen_US
dc.subjectexpressionen_US
dc.subjectstressen_US
dc.subjectaccumulationen_US
dc.titleVacuolar acidity, protein profile, and crystal composition of epidermal bladder cells of the halophyte Mesembryanthemum crystallinumen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1071/fp06269zh_TW
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en_US-
item.fulltextno fulltext-
item.grantfulltextnone-
item.openairetypeJournal Article-
Appears in Collections:生命科學系所
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