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Protein synthesis in geostimulated root capsA study is presented of the processes occurring in the root cap of corn which are requisite for the formation of root cap inhibitor and which can be triggered or modulated by both light and gravity. The results of this study indicate the importance of protein synthesis for light-induced gravitropic bending in roots. Root caps in which protein synthesis is prevented are unable to induce downward bending. This suggests that light acts by stimulating proteins which are necessary for the translation of the gravitropic stimulus into a growth response (downward bending). The turnover of protein with time was also examined in order to determine whether light acts by stimulating the synthesis of unique proteins required for downward growth. It is found that auxin in combination with light allows for the translation of the gravitropic stimulus into a growth response at least in part through the modification of protein synthesis. It is concluded that unique proteins are stimulated by light and are involved in promoting the downward growth in roots which are responding to gravity.
Document ID
19830046596
Document Type
Reprint (Version printed in journal)
Authors
Feldman, L. J.
(California, University Berkeley, CA, United States)
Date Acquired
August 11, 2013
Publication Date
December 1, 1982
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: NAGW-234
Distribution Limits
Public
Copyright
Other
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