Document Detail

The role of the cotyledons in the photocontrol of hypocotyl extension in Cucumis sativus L.
MedLine Citation:
PMID:  24458299     Owner:  NLM     Status:  In-Data-Review    
Extension growth of the hypocotyl of de-etiolated cucumber seedlings is inhibited by blue and red light, the latter operating through the phytochrome system. The major part of the inhibition due to red light is mediated through the cotyledons which transmit the effect to the hypocotyl. On the other hand, blue light acts directly upon the hypocotyl, the cotyledons apparently not being involved. Thus, there is a morphological separation of spectral sensitivity. The role of the cotyledons is evident only in de-etiolated seedlings. Etiolated plants also differ in being sensitive to prolonged far-red light whose effect becomes less apparent as seedlings age. De-etiolation seems to abolish sensitivity to far-red.
M Black; J E Shuttleworth
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Planta     Volume:  117     ISSN:  0032-0935     ISO Abbreviation:  Planta     Publication Date:  1974 Mar 
Date Detail:
Created Date:  2014-01-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1250576     Medline TA:  Planta     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  57-66     Citation Subset:  -    
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