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Response of rice to inoculation with genetic engineered strains of associative diazotrophs

Shen Bingfu, Zhu Hairong, Li Jie

Shanghai Institute of Plant Physiology, Chinese Academy of Sciences. Shanghai 200032

Abstract

The effect of inoculation with Klebsiella oxytoca}** NG1390 and Enterobacter choacae) E2613 on the amount of nitrogen fixed was examinde on the ricebacteria association in pots in a greenhouse. NG 1390 and E2613 were shown to be able to fix N in the presence of ammonium in he medium. Upon inoculation with NG1390 or E2613, plant growth was higher than that of NG13-or E26-inoculated plant The effective nitrogen fixing rate (Nd-fa%) was in the range of 19.0%-21.4%. Assay by ~(15)N-dilution technique indicated that N increment in plant might be due to N fixation. The inoculation with genetically improved Klebsiella) and Enterobacter) enhanced associative nitrogen fixation of rice-bacteria in the rhizosphere.

Key words: Association diazotroph;Nitrogen fixation;Rice

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Citing This Article：

Shen Bingfu, Zhu Hairong, Li Jie. Response of rice to inoculation with genetic engineered strains of associative diazotrophs. Acta Physiol Sin 1995; 47 (3): (in Chinese with English abstract).