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한국생태학회 / v.6, no.4, 1983년, pp.243-249 
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벼의 무기양분 흡수에 미치는 pH 의 영향
( The Effect of pH on the Mineral Nutrient Uptake in the Rice Seedlings ) |
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| Absorption pattern of potassium, calcium, phosphate and nitrate ions, and the pH change during ion-absorption at pH 3.0-11.0 by Oryza sativa L. were studied to investigate indirectly the evidence of H^+-efflux by ATPase. The rice seedlings which were grown either in $L^{circ} -dark or in L^+-sunlight$, were used both in each ion-absorption to compare with one another. The uptake rate of these ions appeared to favor more in $L^+than in L^{circ}$, over all range in pH, nearly with the same pattern. The absorption of potassium resulted in bell shape and that of calcium increased linearly to the alkali range. The shape of phosphate-absorption showed nearly the t-distribution curve with high value in acid range and the uptake of nitrate resulted in the dual peaks, but higher in acid range. The pH of the external solution changed from the range of 3.5-11.0 to 3.5-7.0 after lhr-absorptioin, and further acidified after 3hr-absorption. It is suggested that the pH change of the external solution be affected by $ H^+-efflux$ which may be caused by the ATP-hydrolysis. |
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The Korean Journal of Ecology / v.6, no.4, 1983년, pp.243-249
한국생태학회
ISSN : 1225-0317
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198311919964399)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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