Although the rice plant rhizosphere isolate of 1 kinds or plural kinds, the plant pathogenic bacteria (the especially rice plant it is and has and the illness) with controlling the infection, it makes the biomass of the plant increase and/or it makes taking in the arsenic decrease by the plant, just the effective quantity, the plant (the especially rice plant), administers to the soil around the seed or the plant of the plant, the method due to this invention. In one aspect, method in order to control the true germ infection of the plant by the plant pathogenic bacteria is offered, this method although the infection by the aforementioned plant pathogenic bacteria the rice plant rhizosphere isolate of 1 kinds or plural kinds, in comparison with the not yet processing plant is controlled just the effective quantity, includes the fact that it administers to the soil around the seed or the aforementioned plant of the aforementioned plant and the aforementioned plant.1種または複数種のイネ根圏分離株を、植物病原菌(特にイネいもち病)による感染を抑制して植物の生物量を増大させかつ/または植物によるヒ素の取り込みを減少させるのに有効な量だけ、植物(特にイネ)、植物の種子、または植物の周囲の土壌に施す、本発明による方法。一局面において、植物病原菌による植物の真菌感染を抑制するための方法が提供され、この方法は、1種または複数種のイネ根圏分離株を、未処理植物と比べて前記植物病原菌による感染を抑制するのに有効な量だけ、前記植物、前記植物の種子、または前記植物の周囲の土壌に施すことを含む。
