SUBCELLULAR-DISTRIBUTION OF NITROGEN-COMPOUNDS IN AZOLLA AND ANABAENA BY ESI AND EELS ANALYSIS

被引：6

作者：

ALBERTANO, P

CANINI, A

CAIOLA, MG

机构：

[1] Department of Biology, University of Rome 'Tor Vergata', Rome, I-00133, via della Ricerca Scientifica

来源：

PROTOPLASMA | 1993年 / 173卷 / 3-4期

关键词：

AZOLLA-ANABAENA SYMBIOSIS; ULTRASTRUCTURE; NITROGEN DISTRIBUTION; ELECTRON SPECTROSCOPIC IMAGING; ELECTRON ENERGY LOSS SPECTROSCOPY;

D O I：

10.1007/BF01379004

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The sub-cellular localization of some nitrogen compounds within the leaf cavities of Azolla filiculoides Lam. was obtained by means of electron spectroscopic imaging (ESI) and electron energy loss spectroscopy (EELS). The analyses were performed on ultrathin unstained sections of different Azolla leaf cavities which contain epidermal hairs, Anabaena azollae Strasb. and bacteria. Net nitrogen distributions were visualized by image analysis, and nitrogen peaks were evidenced in spectra recorded in the same areas. Different distributions of nitrogen compounds were observed within the leaf cavities along the stem, in particular inside the epidermal hairs of Azolla and the vegetative cells and heterocysts of A. azollae.

引用

页码：158 / 169

页数：12

共 23 条

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[2]

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[3]

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