DC Field | Value | Language |
---|---|---|
dc.contributor.author | Suh, S | - |
dc.contributor.author | Moran, N | - |
dc.contributor.author | Lee, Y | - |
dc.date.accessioned | 2016-03-31T13:29:03Z | - |
dc.date.available | 2016-03-31T13:29:03Z | - |
dc.date.created | 2009-08-18 | - |
dc.date.issued | 2000-07 | - |
dc.identifier.issn | 0032-0889 | - |
dc.identifier.other | 2000-OAK-0000001437 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/19928 | - |
dc.description.abstract | Light induced leaflet movement of Samanea saman depends on the regulation of membrane transporters in motor cells. Blue light (BL) stimulates leaflet opening by inducing K+ release from the flexor motor cells. To elucidate the mechanism of K+-efflux (K-D)-channel regulation by light, flexor motor cell protoplasts were patch-clamped in a cell-attached configuration during varying illumination. Depolarization elicited outward currents through single open K-D channels. Changes in cell membrane potential (E-M) were estimated by applying voltage ramps and tracking the change of the apparent reversal potential of K-D-channel current. BL shifted E-M in a positive direction (i.e. depolarized the cell) by about 10 mV. Subsequent red light pulse followed by darkness shifted E-M oppositely (i.e. hyperpolarized the cell). The BL-induced shifts of E-M were not observed in cells pretreated with a hydrogen-pump inhibitor, suggesting a contribution by hydrogen-pump to the shift. BL also increased K-D-channel activity in a voltage-independent manner as reflected in the increase of the mean net steady-state patch conductance at a depolarization of 40 mV relative to the apparent reversal potential (G(@40)). G(@40) increased by approximately 12 pS without a change of the single-channel conductance, possibly by increasing the probability of channel opening. Subsequent red-light and darkness reversed the change in G(@40). Thus, K+ efflux, a determining factor for the cell-volume decrease of flexor cells, is regulated by BL in a dual manner via membrane potential and by an independent signaling pathway. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | AMER SOC PLANT PHYSIOLOGISTS | - |
dc.relation.isPartOf | PLANT PHYSIOLOGY | - |
dc.subject | PLASMA-MEMBRANE | - |
dc.subject | GUARD-CELLS | - |
dc.subject | K+ CHANNELS | - |
dc.subject | PATCH-CLAMP | - |
dc.subject | SIGNAL-TRANSDUCTION | - |
dc.subject | ION CHANNELS | - |
dc.subject | VICIA-FABA | - |
dc.subject | H+-ATPASE | - |
dc.subject | RED-LIGHT | - |
dc.subject | PROTOPLASTS | - |
dc.title | Blue light activates potassium-efflux channels in flexor cells from Samanea saman motor organs via two mechanisms | - |
dc.type | Article | - |
dc.contributor.college | 생명과학과 | - |
dc.identifier.doi | 10.1104/pp.123.3.833 | - |
dc.author.google | Suh, S | - |
dc.author.google | Moran, N | - |
dc.author.google | Lee, Y | - |
dc.relation.volume | 123 | - |
dc.relation.issue | 3 | - |
dc.relation.startpage | 833 | - |
dc.relation.lastpage | 843 | - |
dc.contributor.id | 10175128 | - |
dc.relation.journal | PLANT PHYSIOLOGY | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | PLANT PHYSIOLOGY, v.123, no.3, pp.833 - 843 | - |
dc.identifier.wosid | 000088213300007 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 843 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 833 | - |
dc.citation.title | PLANT PHYSIOLOGY | - |
dc.citation.volume | 123 | - |
dc.contributor.affiliatedAuthor | Lee, Y | - |
dc.identifier.scopusid | 2-s2.0-0033942378 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 34 | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | PLASMA-MEMBRANE | - |
dc.subject.keywordPlus | GUARD-CELLS | - |
dc.subject.keywordPlus | K+ CHANNELS | - |
dc.subject.keywordPlus | PATCH-CLAMP | - |
dc.subject.keywordPlus | SIGNAL-TRANSDUCTION | - |
dc.subject.keywordPlus | ION CHANNELS | - |
dc.subject.keywordPlus | VICIA-FABA | - |
dc.subject.keywordPlus | H+-ATPASE | - |
dc.subject.keywordPlus | RED-LIGHT | - |
dc.subject.keywordPlus | PROTOPLASTS | - |
dc.relation.journalWebOfScienceCategory | Plant Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Plant Sciences | - |
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