The effect of external Ca~(2+) and Ca~(2+)-channel modulators on red-light-induced swelling of protoplasts of Phaseolus radiatus L.

LONG CHENG; XIAO JING WANG; RUI CHI PAN

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The effect of external Ca~(2+) and Ca~(2+)-channel modulators on red-light-induced swelling of protoplasts of Phaseolus radiatus L.

机译：The effect of external Ca~(2+) and Ca~(2+)-channel modulators on red-light-induced swelling of protoplasts of Phaseolus radiatus L.

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摘要

Red-light-induced swelling of the protoplasts isolated from hypocotyl of etiolated mung bean (Phaseolus radiatus L.) was observed only when Ca~(2+) ions were present in the medium. The optimal CaCl_2 concentration was 250 #mu#M. Swelling response declined when Ca~(2+) was supplied into the medium after red light irradiation. The Ca~(2+)-chelator EGTA eliminated the red-light-induced swelling and ~(45)Ca~(2+) accumulation in the protoplasts. In contrast, A_(23187), a Ca~(2+)-ionophore, could mimic the effect of red light in darkness. These results indicate that Ca~(2+) may play a role in light signal transduction. In addition, swelling response was prevented by TFP and CPZ (both are CaM antagonists), implying the involvement of CaM in red-light-induced and Ca~(2+)-dependent protoplast swelling.

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来源
《Cell research》 |1998年第1期|41-50|共10页
作者
LONG CHENG; XIAO JING WANG; RUI CHI PAN;
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作者单位

Department of Biology, South China Normal University, Guangzhou 510631, China;

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收录信息美国《科学引文索引》(SCI);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类细胞生物学;
关键词
calcium ions; red light; protoplast swelling; ~(45)Ca~(2+) accumulation; phaseolus radiatus;

The effect of external Ca~(2+) and Ca~(2+)-channel modulators on red-light-induced swelling of protoplasts of Phaseolus radiatus L.

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