Phosphate absorption of intact komatsuna plants as influenced by phosphite

Autor:	Hoang Thi Bich Thao, Takeo Yamakawa
Rok vydání:	2010
Předmět:	Absorption (pharmacology) Absorption of water Chemistry Phosphorus food and beverages Soil Science chemistry.chemical_element Plant Science Hydroponics Phosphate Horticulture chemistry.chemical_compound Shoot Botany Brassica rapa Pi
Zdroj:	Soil Science and Plant Nutrition. 56:133-139
ISSN:	1747-0765 0038-0768
DOI:	10.1111/j.1747-0765.2009.00431.x
Popis:	Phosphite (PO4 3-; Pi) uptake in cell suspension culture, information on how Phi affects the Pi uptake of intact plants remains to be determined. The present study was conducted to investigate the effect of Phi on Pi absorption of intact komatsuna plants (Brassica rapa var. peruviridis cv. Ajisai) in hydroponic culture. Phosphite markedly decreased Pi absorption of the intact komatsuna plants under both low (0.05 mmol L−1) and high (0.5 mmol L−1) Pi supply, although the growth (both shoots and roots) and water uptake of the high Pi-supplied plants was not affected by Phi. The inhibiting effect of Phi was small at 0.2 mmol L−1, but became large at 2 mmol L−1. Using relatively large seedlings (28 days old) to better assess the influence of Phi on Pi absorption early in the treatment, the results indicated that there was an immediate decrease in Pi absorption within the first 2-day period of Phi treatment when the water absorption of the plants was not affected. Taken together, the results suggested...
Databáze:	OpenAIRE
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