Document Detail

Pollen tube attraction by the synergid cell.
MedLine Citation:
PMID:  11520985     Owner:  NLM     Status:  MEDLINE    
In flowering plants, guidance of the pollen tube to the embryo sac (the haploid female gametophyte) is critical for successful fertilization. The target embryo sac may attract the pollen tube as the final step of guidance in the pistil. We show by laser cell ablation that two synergid cells adjacent to the egg cell attract the pollen tube. A single synergid cell was sufficient to generate an attraction signal, and two cells enhanced it. After fertilization, the embryo sac no longer attracts the pollen tube, despite the persistence of one synergid cell. This cessation of attraction might be involved in blocking polyspermy.
T Higashiyama; S Yabe; N Sasaki; Y Nishimura; Miyagishima S; H Kuroiwa; T Kuroiwa
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  293     ISSN:  0036-8075     ISO Abbreviation:  Science     Publication Date:  2001 Aug 
Date Detail:
Created Date:  2001-08-24     Completed Date:  2001-09-20     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1480-3     Citation Subset:  IM    
Department of Biological Sciences, Graduate School of Science, University of Tokyo, Hongo, Tokyo 113-0033, Japan.
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MeSH Terms
Angiosperms / cytology,  physiology*
Culture Techniques
Germ Cells / cytology,  physiology
Plant Structures / cytology*,  physiology*
Pollen / physiology*
Seeds / physiology
Ultraviolet Rays
Comment In:
Science. 2001 Aug 24;293(5534):1441-2   [PMID:  11520971 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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