pubmed-article:9701582 | rdf:type | pubmed:Citation | lld:pubmed |
pubmed-article:9701582 | lifeskim:mentions | umls-concept:C0162741 | lld:lifeskim |
pubmed-article:9701582 | lifeskim:mentions | umls-concept:C0242766 | lld:lifeskim |
pubmed-article:9701582 | lifeskim:mentions | umls-concept:C0033731 | lld:lifeskim |
pubmed-article:9701582 | lifeskim:mentions | umls-concept:C0022023 | lld:lifeskim |
pubmed-article:9701582 | lifeskim:mentions | umls-concept:C0031857 | lld:lifeskim |
pubmed-article:9701582 | lifeskim:mentions | umls-concept:C1704675 | lld:lifeskim |
pubmed-article:9701582 | lifeskim:mentions | umls-concept:C0288450 | lld:lifeskim |
pubmed-article:9701582 | lifeskim:mentions | umls-concept:C2348693 | lld:lifeskim |
pubmed-article:9701582 | pubmed:issue | 4 | lld:pubmed |
pubmed-article:9701582 | pubmed:dateCreated | 1998-9-21 | lld:pubmed |
pubmed-article:9701582 | pubmed:abstractText | Protoplasts isolated from red-light-adapted Arabidopsis hypocotyls and incubated under red light exhibited rapid and transient shrinking within a period of 20 min in response to a blue-light pulse and following the onset of continuous blue light. Long-persisting shrinkage was also observed during continuous stimulation. Protoplasts from a hy4 mutant and the phytochrome-deficient phyA/phyB double mutant of Arabidopsis showed little response, whereas those from phyA and phyB mutants showed a partial response. It is concluded that the shrinking response itself is mediated by the HY4 gene product, cryptochrome 1, whereas the blue-light responsiveness is strictly controlled by phytochromes A and B, with a greater contribution by phytochrome B. It is shown further that the far-red-absorbing form of phytochrome (Pfr) was not required during or after, but was required before blue-light perception. Furthermore, a component that directly determines the blue-light responsiveness was generated by Pfr after a lag of 15 min over a 15-min period and decayed with similar kinetics after removal of Pfr by far-red light. The anion-channel blocker 5-nitro-2-(3-phenylpropylamino)-benzoic acid prevented the shrinking response. This result, together with those in the literature and the kinetic features of shrinking, suggests that anion channels are activated first, and outward-rectifying cation channels are subsequently activated, resulting in continued net effluxes of Cl- and K+. The postshrinking volume recovery is achieved by K+ and Cl- influxes, with contribution by the proton motive force. External Ca2+ has no role in shrinking and the recovery. The gradual swelling of protoplasts that prevails under background red light is shown to be a phytochrome-mediated response in which phytochrome A contributes more than phytochrome B. | lld:pubmed |
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pubmed-article:9701582 | pubmed:language | eng | lld:pubmed |
pubmed-article:9701582 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:9701582 | pubmed:citationSubset | IM | lld:pubmed |
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pubmed-article:9701582 | pubmed:status | MEDLINE | lld:pubmed |
pubmed-article:9701582 | pubmed:month | Aug | lld:pubmed |
pubmed-article:9701582 | pubmed:issn | 0032-0889 | lld:pubmed |
pubmed-article:9701582 | pubmed:author | pubmed-author:IinoMM | lld:pubmed |
pubmed-article:9701582 | pubmed:author | pubmed-author:WangXX | lld:pubmed |
pubmed-article:9701582 | pubmed:issnType | Print | lld:pubmed |
pubmed-article:9701582 | pubmed:volume | 117 | lld:pubmed |
pubmed-article:9701582 | pubmed:owner | NLM | lld:pubmed |
pubmed-article:9701582 | pubmed:authorsComplete | Y | lld:pubmed |
pubmed-article:9701582 | pubmed:pagination | 1265-79 | lld:pubmed |
pubmed-article:9701582 | pubmed:dateRevised | 2010-9-10 | lld:pubmed |
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pubmed-article:9701582 | pubmed:year | 1998 | lld:pubmed |
pubmed-article:9701582 | pubmed:articleTitle | Interaction of cryptochrome 1, phytochrome, and ion fluxes in blue-light-induced shrinking of Arabidopsis hypocotyl protoplasts. | lld:pubmed |
pubmed-article:9701582 | pubmed:affiliation | Botanical Gardens, Faculty of Science, Osaka City University, Kisaichi, Katano-shi, Osaka 576, Japan. | lld:pubmed |
pubmed-article:9701582 | pubmed:publicationType | Journal Article | lld:pubmed |
pubmed-article:9701582 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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