Effects of Sulfur Nutrition on the Growth and Photosynthesis of Rice
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概要
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Rice plants (Oryza sativa L. cv. IR72) were grown hydroponically in 1.0 mM SO_4^<2-> for one week and transferred to 0,0.01,0.03,0.1,0.3,or 3 mM SO_4^<2->. An increase in the sulfate concentration in the medium up to 0.03 mM resulted in a significant increase in the relative growth rate (RGR) due to the increase in the net assimilation rate (NAR). The leaf blade and leaf sheath showed a linear increase in the total S content at 0 to 0.1 mM SO_4^<2-> in the growth solution. Total S content in the roots continued to increase with increased S supply. Changes in the soluble S content followed the same pattern as the total S content but increased proportionally in the leaf sheath and roots. Total N content and N allocation to the leaves also decreased below 0.1 mM S. However, the decrease in the N content was not appreciable, compared with that of the S content. S-deficiency strongly decreased the leaf photosynthesis, which was caused by large decreases in the contents of chlorophyll and ribulose-1,5-bis-phosphate carboxylase/oxygenase (Rubisco) below 0.1 mw SO_4^<2-> in the growth solution.
- 社団法人日本土壌肥料学会の論文
著者
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Bennett John
International Rice Research Institute
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John Bennett
International Rice Research Institute
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Adoracion P.Resurreccion
International Rice Research Institute
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Amane Makino
Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University
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Tadahiko Mae
Department of Applied Plant Science, Graduate School of Agricultural Sciences, Tohoku University
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MAKINO Amane
Department of Applied Biological Chemistry, Faculty of Agriculture, Tohoku University
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Resurreccion Adoracion
International Rice Research Institute
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Adoracion P.resurreccion
International Rice Research Institute:department Of Applied Plant Science Graduate School Of Agricul
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Amane Makino
Department Of Applied Plant Science Graduate School Of Agricultural Sciences Tohoku University
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Tadahiko Mae
Department Of Applied Plant Science Graduate School Of Agricultural Sciences Tohoku University
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MAKINO Amane
Department of Agriculture, Graduate School of Agricultural Science, Tohoku University:CREST, JST
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MAKINO Amane
Department of Agriculture, Graduate School of Agricultural Science, Tohoku University
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