THE PATH OF CARBON IN PHOTOSYNTHESIS. XXVII. SUGAR-CONJUGATED PLANT GROWTH REGULATORS ENHANCE GENERAL PRODUCTIVITY |
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| Authors: | Arthur M. Nonomura Andrew A. Benson Karl Y. Biel |
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| Affiliation: | 1. Scripps Institution of Oceanography , University of California , San Diego, California, USA;2. Department of Organismic and Evolutionary Biology , Harvard University Herbaria, Farlow Herbarium 1, Harvard University , Cambridge, Massachusetts, USA;3. Scripps Institution of Oceanography , University of California , San Diego, California, USA;4. Institute of Basic Biological Problems , Russian Academy of Sciences , Pushchino, Russia;5. Biosphere Systems International Foundation , Oro Valley, Arizona, USA |
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| Abstract: | We have found that applications of sugar-conjugated plant growth regulators (SPGRs) by exposures of roots or shoots to millimolar (mM) SPGRs are key to their uptake and transport for enhancement of vegetative productivity of the entire plant as compared to control populations. Initial surveys utilizing foliar applications of identically nutrient-supplemented 0.3 mM cytokinin glycosides, N6-benzyladenine glycosides, kinetin glycosides; and a 0.3 mM auxin glycoside, indoxyl-β-D-glucopyranoside (IG) resulted in significant shoot enhancements over controls. Foliar application of 0.3 mM kinetin glucoside resulted in significant root increase above the control. Foliar application of 3 mM to 6 mM IG resulted in enhanced root and shoot growths over controls. Similarly, increases of root and shoot yields over controls were observed as a result of foliar application of 3 mM indoxyl-β-D-glucuronide. Foliar application of 1 mM trans-zeatin-β-D-glucoside was particularly effective, resulting in significant enhancement of root and shoot growth with no phytotoxicity. |
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| Keywords: | carbon brassicas manganese |
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