Interaction between nitrogen nutrients acquisition function and distribution of photosynthetic products
窒素栄養の獲得能と光合成産物分配能の相互関係に関する研究
大山 卓爾*; 末吉 邦*; 大竹 憲邦*; 伊藤 小百合*; 石橋 弘規*; Hara, T.*; Kimura, T.*; 松橋 信平; 藤巻 秀; 鈴井 伸郎; 石井 里美; 石岡 典子; 渡辺 智; 河地 有木; 塚本 崇志
Oyama, Takuji*; Sueyoshi, Kuni*; Otake, Norikuni*; Ito, Sayuri*; Ishibashi, H.*; Hara, T.*; Kimura, T.*; Matsuhashi, Shimpei; Fujimaki, Shu; Suzui, Nobuo; Ishii, Satomi; Ishioka, Noriko; Watanabe, Satoshi; Kawachi, Naoki; Tsukamoto, Takashi
As nodulated leguminous crops grow, they assimilate both gaseous nitrogen and combined nitrogen. Combined N especially the NO![$$_{3}$$](/search/images/ERPXWM13EQ.gif)
form inhibits all phases of nodulation and N
fixation process, although the mechanism have not been fully elucidated. Tungstate is a non-essential element for plant growth, which exerts harmaful effects on plants. When tungstate is applied to the plant medium, it competes with molybdate and inhibits some enzymes, which have a Mo cofactor in the active site such as nitrate reductase and nitrogenase. Application WO![$$_{4}$$](/search/images/ERPXWND3EQ.gif)
to the culuture medium diturbed nitrate transport to the shoot. In this report, WO![$$_{4}$$](/search/images/ERPXWND3EQ.gif)
was introduced into cut end of petiole of primary leaf and investigated that
NO![$$_{3}$$](/search/images/ERPXWM13EQ.gif)
transport from root to shoot was inhibited or not.