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Epicuticular wax of leaf epidermis:a functional structure for salt excretion in a halophyte Puccinellia tenuiflora
Author(s): 
Pages: 2451-2456
Year: Issue:  11
Journal: ACTA ECOLOGICA SINICA

Keyword:  星星草叶表皮蜡质层泌盐生态适应;
Abstract: 利用扫描电镜和X射线电子探针研究了星星草(Puccinellia tenuiflora)的叶表皮及其与生境高盐的关系.结果表明,叶表皮由表皮细胞和气孔器组成,下表皮气孔器多于上表皮,且常下陷,表皮具表皮毛.表皮细胞外存在丰富的蜡质纹饰和蜡质颗粒,这些蜡质包含盐离子,具有泌盐的功能.这些特征表明星星草受外界生态因素的影响,而演化出具有泌盐功能的蜡质层来适应所生长的高盐生境.
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