Effects of sulfur nutrition on the growth and photosynthesis of rice

Adoracion P. Resurreccion, Amane Makino, John Bennett, Tadahiko Mae

研究成果: Article査読

22 被引用数 (Scopus)

抄録

Rice plants (Oryza sativa L. cv. IR72) were grown hydroponically in 1.0 mM SO4 2- for one week and transferred to 0, 0.01, 0.03, 0.1, 0.3, or 3 mM SO4 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 SO4 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-bisphosphate carboxylase/oxygenase (Rubisco) below 0.1 mM SO4 2- in the growth solution.

本文言語English
ページ(範囲)611-620
ページ数10
ジャーナルSoil Science and Plant Nutrition
47
3
DOI
出版ステータスPublished - 2001

ASJC Scopus subject areas

  • 土壌科学
  • 植物科学

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