00225573

open access

Version of Record

ショクブツコン ペントース リンサン ケイロ ノ アショウサン ニヨル カッセイカ イネコン ト オオムギコン ノ ヒカク

Nitrite Activation of Pentose Phosphate Pathway in Plant Root : Comparison between Rice Root and Barley Root

Japanese (日本語)

神戸大学農学部研究報告

16(2)

517-521

神戸大学農学部

1985-01-31

2006-09-15

本文ファイルは、国立情報学研究所CiNiiより提供されたものです。

Using rice and barley roots which have different ability to assimilate nitrite, physiological effects of nitrite were investigated at the faces of respiratory metabolism. In both roots, increases of respiratory quotient and CO_2 release and decrease of C_6/C_1 ratio were observed in the presence of nitrite. The addition of nitrite to the culture medium resulted in increases of the activities of glucose-6-phosphate and 6-phosphogluconate dehydrogenases. These data show nitrite activates the pentose phosphate pathway in plant root. Decreased activities of nitrite reductase and glucose-6-phosphate and 6-phosphogluconate dehydrogenases resulted from the prolonged nitrite culture in rice roots but not in barley roots. Nitrite reductase activity of barley roots was higher than that of rice ones. It is suggested that the low capability of rice root to assimilate nitrite is associated with a restricted amount of nitrite reductase.

紀要論文