Exine Receptors

 

作者: JohnR. Rowley,   JohnJ. Skvarla,  

 

期刊: Grana  (Taylor Available online 1993)
卷期: Volume 32, issue sup2  

页码: 21-25

 

ISSN:0017-3134

 

年代: 1993

 

DOI:10.1080/00173139309428974

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Structures that receive sporopollenin are similar in the pollen grains of a wide variety of angiosperms and in the coniferPinus. These structures are rod-shaped, with a central core that accepts stains strongly and an outer binder zone that only weakly accepts stains. These sporopollenin-accumulating rods are substructures of the exine units we call “tufts”. In many taxa tuft substructures are covered by receptor-independent (extra-tuft) accumulated sporopollenin and surfaces are smooth. We show an example (Quercus coccifera) of the acetolysis resistance of extra-tuft accumulated sporopollenin followed by its removal through oxidation which reveals the tufts.

 

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