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Literature DB >> 11536594

Modulation of chloroplast movement in the green alga Mougeotia by the Ca2+ ionophore A23187 and by calmodulin antagonists.

Abstract

The Ca2+ ionophore A23187 can induce chloroplast rotation within a single nonirradiated Mougeotia cell. The induced turning was dependent on the position of ionophore application and Ca2+ in the external medium. The role of calmodulin in mediating light-induced chloroplast rotation in the alga Mougeotia was investigated by using the paired calmodulin-antagonist drugs W5-W7 and W12-W13. In each pair, the antagonist with the greater affinity for calmodulin had the greater inhibitor effect on the phytochrome-controlled light response. These results support the hypothesis that calcium functions as a chemical messenger to couple the stimulus of phytochrome photoactivation with physiological responses in plants.

Entities: Chemical Disease Gene

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Year: 1984 PMID： 11536594 PMCID： PMC391925 DOI： 10.1073/pnas.81.20.6368

Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205

10 in total

9. Inhibition of the acrosome reaction of sea urchin spermatozoa by a calmodulin antagonist, N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide (W-7).

Authors: K Sano
Journal: J Exp Zool Date: 1983-06

10. Purification of calmodulin from Chlamydomonas: calmodulin occurs in cell bodies and flagella.

Authors: S E Gitelman; G B Witman
Journal: J Cell Biol Date: 1980-12 Impact factor: 10.539

10 in total

21 in total

6. Characterization of the isolated calcium-binding vesicles from the green alga Mougeotia scalaris, and their relevance to chloroplast movement.

Authors: F Grolig; G Wagner
Journal: Planta Date: 1989-02 Impact factor: 4.116

7. Detection of a calcium-activated protein kinase in mougeotia by using synthetic Peptide substrates.

Authors: D M Roberts
Journal: Plant Physiol Date: 1989-12 Impact factor: 8.340

8. Calcium requirement of phytochrome-mediated fern-spore germination: No direct phytochrome-calcium interaction in the phytochrome-initiated transduction chain.

Authors: R Scheuerlein; R Wayne; S J Roux
Journal: Planta Date: 1989-05 Impact factor: 4.116

9. Calmodulin and wound healing in the coenocytic green alga Ernodesmis verticillata (Kützing) Børgesen : Immunofluorescence and effects of antagonists.

Authors: R H Goddard; J W La Claire
Journal: Planta Date: 1991-01 Impact factor: 4.116

10. Characterization of a calcium/calmodulin-dependent protein kinase homolog from maize roots showing light-regulated gravitropism.

Authors: Y T Lu; H Hidaka; L J Feldman
Journal: Planta Date: 1996 Impact factor: 4.116

Modulation of chloroplast movement in the green alga Mougeotia by the Ca2+ ionophore A23187 and by calmodulin antagonists.

1. Calcium-dependent regulation of NAD kinase.

2. Phytochrome induces photoreversible calcium fluxes in a purified mitochondrial fraction from oats.

3. Characterization of oat calmodulin and radioimmunoassay of its subcellular distribution.

4. Reversible inhibition of chloroplast movement by cytochalasin B in the green alga mougeofia.

5. Effect of the intracellular Ca+2 antagonist TMB-8 on serum-stimulated Na+ influx in human fibroblasts.

6. Reconstitution of Ca2+-sensitive gelation of actin filaments with filamin, caldesmon and calmodulin.

7. Activity-structure relationship of calmodulin antagonists, Naphthalenesulfonamide derivatives.

8. Calmodulin and the cell cycle: involvement in regulation of cell-cycle progression.

9. Inhibition of the acrosome reaction of sea urchin spermatozoa by a calmodulin antagonist, N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide (W-7).

10. Purification of calmodulin from Chlamydomonas: calmodulin occurs in cell bodies and flagella.

1. External Ca(2+) is essential for chloroplast movement induced by mechanical stimulation but not by light stimulation.

2. Light-affected ca fluxes in protoplasts from vallisneria mesophyll cells.

3. Phytochrome activation of k channels and chloroplast rotation in mougeotia: action spectra.

4. Microtubule Binding Proteins Are Not Necessarily Microtubule-Associated Proteins.

5. Distribution of calmodulin in pea seedlings: Immunocytochemical localization in plumules and root apices.

6. Characterization of the isolated calcium-binding vesicles from the green alga Mougeotia scalaris, and their relevance to chloroplast movement.

7. Detection of a calcium-activated protein kinase in mougeotia by using synthetic Peptide substrates.

8. Calcium requirement of phytochrome-mediated fern-spore germination: No direct phytochrome-calcium interaction in the phytochrome-initiated transduction chain.

9. Calmodulin and wound healing in the coenocytic green alga Ernodesmis verticillata (Kützing) Børgesen : Immunofluorescence and effects of antagonists.

10. Characterization of a calcium/calmodulin-dependent protein kinase homolog from maize roots showing light-regulated gravitropism.