Rapid changes in protein phosphorylation associated with light-induced gravity perception in corn roots

McFadden, J. J.; Poovaiah, B. W.

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NASA NTRS · 20040090135

Rapid changes in protein phosphorylation associated with light-induced gravity perception in corn roots

McFadden, J. J.·Poovaiah, B. W.

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Abstract

The effect of light and calcium depletion on in vivo protein phosphorylation was tested using dark-grown roots of Merit corn. Light caused rapid and specific promotion of phosphorylation of three polypeptides. Pretreatment of roots with ethylene glycol bis N,N,N',N' tetraacetic acid and A23187 prevented light-induced changes in protein phosphorylation. We postulate that these changes in protein phosphorylation are involved in the light-induced gravity response.

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NASA Program Space Biology Non-NASA Center NASA Discipline Number 40-30 NASA Discipline Plant Biology Gravity Perception/physiology Light Phosphorylation/drug effects/radiation effects Zea mays/physiology Plant Roots/physiology Support, U.S. Gov't, P.H.S Calcium/metabolism Phosphoproteins/isolation & purification Plant Proteins/metabolism Calcimycin/pharmacology Egtazic Acid/pharmacology Signal Transduction/physiology Gravitropism Support, U.S. Gov't, Non-P.H.S

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McFadden, J. J., Poovaiah, B. W.. 1988-01-01. Rapid changes in protein phosphorylation associated with light-induced gravity perception in corn roots. https://ntrs.nasa.gov/citations/20040090135

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