CHARACTERIZATION OF ABSORPTION SITES FOR ALUMINUM IN THE ROOTS
スポンサーリンク
概要
- 論文の詳細を見る
Several experiments on the absorption sites for Al in the roots and the changes in the chemical forms of Al absorbed with time were carried out. among plant species the Al content in the roots was positively correlated with the CEC of the dry root powder. Extraction of pectic substances, nucleic acids, cold 10% trichloroacetic acid soluble phosphates (namely inorganic phosphates, ATP, sugar phosphates, etc.) significantly decreased the subsequent absorption of Al. Al content of the dry root power was considerably higher than that of the excised roots which were treated with Al. The time course of Al uptake by the dry root powder was different from that by the excised roots: after approximately 1 hr of Al treatment the Al uptake by the dry root powder increased remarkably and proportionally to the time of Al treatment, while that by the excised roots increased only slightly. These results indicate that most of Al is bound to the pectic substances in the cell walls but a part of Al enters the protoplast and combines with nucleic acids and acid soluble phosphates. It is thus suggested that the destruction of roots and the high concentration of Al in the medium increase the passive movement of Al into the protoplast. Ca in the medium containing Al may be able to suppress Al toxicity only when the concentration of Ca is considerably higher than that of Al. Only a part of the absorbed Al may be transformed into more basic forms with time during approximately 1 day after the Al treatment, but thereafter Al absorbed may hardly show any change of form. In the intact plant since Al saturates most of the absorption sites in the roots within a relatively short period namely 30 hr, it is suggested that investigations on the changes in the metabolic reaction of the absorption sites for Al during this period are essential for the elucidation of the mechanisms of Al toxicity.
- 社団法人日本土壌肥料学会の論文
著者
-
Wagatsuma Tadao
Faculty Of Agriculture Yamagata University
-
Wagatsuma Tadao
Faculty Of Agriculture
-
WAGATSUMA Tadao
Faculty of Agriculture,Yamagata University
関連論文
- Greater contribution of low-nutrient tolerance to sorghum and maize growth under combined stress conditions with high aluminum and low nutrients in solution culture simulating the nutrient status of tropical acid soils(Plant Nutrition)
- Methylene Blue Stainability of Root-Tip Protoplasts as an Indicator of Aluminum Tolerance in a Wide Range of Plant Species, Cultivars and Lines(Plant Nutrition)
- A New and Simple Technique for the Isolation of Plasma Membrane Lipids from Root-Tips(Plant Nutrition)
- Effect of Arbuscular Mycorrhizal Fungi Glomus mosseae, Glomus fasciculatum and Glomus caledonium on Phosphorus Uptake and Growth of Welsh Onion (Allium fistulosum L.) in Andosols
- Plasma Membrane Lipids Are the Powerful Components for Early Stage Aluminum Tolerance in Triticale
- Arbuscular Mycorrhizal Fungal Communities Associated with Some Pioneer Plants in the Lahar Area of Mt. Pinatubo, Philippines(Soil Biology)
- Inhibition of Pre-Symbiotic Hyphal Growth of Arbuscular Mycorrhizal Fungus Gigaspora margarita by Root Exudates of Lupinus spp.
- Semi-Quantitative Analysis of Arbuscular Mycorrhizal Colonization of Onion Roots Inoculated with Single or Mixed Species Based upon PCR-RFLP
- Arbuscular Mycorrhizal Colonization in Lupinus and Related Genera
- Effect of Concentration of Phosphate on Spore Germination and Hyphal Growth of Arbuscular Mycorrhizal Fungus, Gigaspora margarita Becker & Hall
- Effect of Phosphate Application to Arbuscular Mycorrhizal Onion on the Development and Succinate Dehydrogenase Activity of Internal Hyphae
- Formation of appressoria by the arbuscular mycorrhizal fungus Gigaspora margarita on roots of Allium cepa is linked with root age
- 9-5 Specific construction of lipid molecules for the root-tip plasma membrane of aluminum-tolerant rice cultivar : Comparative studies on resistance response to high Al conditions (48)
- P9-2 Connection of lipid composition in root-tip portion with differential aluminum tolerance between cultivars in several plant species : Comparative studies on resistance response to high aluminum conditions (51)
- P9-1 Characterization of the primary strategies for production of sorghum and maize grown in different concentrations of aluminum and nutrients : Comparative studies on resistance response to high aluminum conditions (52)
- P9-8 Characterization of the primary strategies for better sorghum production in high aluminum and low nutrients conditions mimicking typical acid soil : Comparative studies on resistance response to high aluminum conditions (49)
- 9-8 Aluminum tolerance is not the primary strategy to determine long-term growth of rice in low ionic strength medium : Comparative studies on resistance response to high aluminum conditions (47)
- 9-7 Plasma membrane lipids and its associated flavonoids controlling differential early stage aluminum tolerances in pedigree cultivers of aluminum-tolerant Sasanishiki : Comparative studies on resistance response to high aluminum conditions (46)
- DESTRUCTION PROCESS OF PLANT ROOT CELLS BY ALUMINUM
- HIGH TOXICITY OF HYDROXY-ALUMINUM POLYMER IONS TO PLANT ROOTS
- Effect of Phosphorus Application on the Contents of Amino Acids and Reducing Sugars in the Rhizosphere and VA Mycorrhizal Infection of White Clover
- CHARACTERISTICS OF UPWARD TRANSLOCATION OF ALUMINUM IN PLANTS
- EFFECT OF pH ON IONIC SPECIES OF ALUMINUM IN MEDIUM AND ON ALUMINUM TOXICITY UNDER SOLUTION CULTURE
- RELATIONSHIP BETWEEN DIFFERENTIAL ALUMINUM TOLERANCE AND PLANTINDUCED pH CHANGE OF MEDIUM AMONG BARLEY CULTIVARS
- CHARACTERIZATION OF ABSORPTION SITES FOR ALUMINUM IN THE ROOTS
- EFFECT OF NON-METABOLIC CONDITIONS ON THE UPTAKE OF ALUMINUM BY PLANT ROOTS
- Leaf herbivory by Spodoptera litura increases arbuscular mycorrhizal colonization in roots of soybean(Soil biology)
- Leaf herbivory by Spodoptera litura increases arbuscular mycorrhizal colonization in roots of soybean