Differential effect of NaCl and polyethylene glycol on the ultrastructure of chloroplasts in rice seedlings.
Differential effect of NaCl and polyethylene glycol on the ultrastructure of chloroplasts in rice seedlings.
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DOI：
10.1078/0176-1617-00948
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发表时间：
2003
影响因子：
4.3
通讯作者：
K. Yamane;M. Kawasaki;M. Taniguchi;H. Miyake
中科院分区：
文献类型：
--
作者：
K. Yamane;M. Kawasaki;M. Taniguchi;H. Miyake
研究了盐度对盐处理稻苗叶绿体超微结构的离子和渗透影响。水培水稻秧苗三周后，用氯化钠和聚乙二醇（PEG）4000在-1.0兆帕的水势下处理三天。 NaCl 和 PEG 处理之间超微结构变化最显着的差异是叶绿体膜的损伤。氯化钠引起类囊体肿胀，仅对叶绿体包膜造成轻微破坏。与 NaCl 相比，PEG 会严重破坏叶绿体包膜，但类囊体不会膨胀。我们的观察表明，在盐处理的水稻植物中，离子效应引起类囊体肿胀，渗透效应导致叶绿体包膜破坏。
Ionic and osmotic effects of salinity on the ultrastructure of chloroplasts in salt-treated rice seedlings were investigated. After rice seedlings were grown in hydroponic culture for three weeks, they were treated with NaCl and polyethylene glycol (PEG) 4000 both at a water potential of -1.0 MPa for 3 days. The most notable difference in ultrastructural change between NaCl and PEG treatment was observed in the damage in chloroplast membranes. NaCl induced swelling of thylakoids and caused only a slight destruction of the chloroplast envelope. PEG caused severe destruction of the chloroplast envelope compared with NaCl, however thylakoids did not swell. Our observations suggested that in salt-treated rice plants, the ionic effects induced swelling of thylakoids and the osmotic effects caused the destruction of chloroplast envelope.