Immunogold localization of callose and other cell wall components in pea nodule transfer cells

被引：38

作者：

Dahiya, P ^{[1
]}

Brewin, NJ ^{[1
]}

机构：

[1] John Innes Ctr Plant Sci Res, Dept Genet, Norwich NR4 7UH, Norfolk, England

来源：

PROTOPLASMA | 2000年 / 214卷 / 3-4期

关键词：

nodule lectin; Rhizobium; legume; symbiosis; pericycle; peribacteroid membrane; symbiosome;

D O I：

10.1007/BF01279065

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Transfer cells are located adjacent to xylem and phloem elements in pea nodule vascular tissues. The composition of the labyrinthine wall intrusions was investigated by immunogold labeling using specific antibody probes. Callose antigen was found at the base of newly formed cell wall intrusions and also in adjacent plasmodesmata. Sections through developed labyrinthine intrusions revealed that wall ingrowths had an internal structure with small domains of callose suggesting the presence of channels or vents. Xyloglucan and pectin antigens were uniformly distributed within the waif, but the distribution of extensin antigens was variable, with different antigens being detected in different regions of the wall ingrowth. A lectinlike glycoprotein, PsNLEC-1, was localized in intercellular spaces associated with nodule transfer cells. Previously, expression of this component was observed in other types of cells showing complex involution of the plasma membrane, namely root cortical cells harboring arbuscular mycorrhizae and nodule cells harboring nitrogen-fixing rhizobia.

引用

页码：210 / 218

页数：9

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