Azospirillum sp. Strain B510 Enhances Rice Growth and Yield

Tsuyoshi Isawa; Michiko Yasuda; Hirotoshi Awazaki; Kiwamu Minamisawa; Satoshi Shinozaki; Hideo Nakashita

doi:10.1264/jsme2.ME09174

Short Communications

Azospirillum sp. Strain B510 Enhances Rice Growth and Yield

Tsuyoshi Isawa, Michiko Yasuda, Hirotoshi Awazaki, Kiwamu Minamisawa, Satoshi Shinozaki, Hideo Nakashita

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Keywords: Azospirillum, inoculation, plant-growth promotion, rice

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Supplementary material

2010 Volume 25 Issue 1 Pages 58-61

DOI https://doi.org/10.1264/jsme2.ME09174

View "Advance Publication" version (January 20, 2010).

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Abstract

Inoculation experiments with the endophytic bacterium Azospirillum sp. strain B510, an isolate from surface-sterilized stems of field-grown rice, were conducted in pots in a greenhouse, and in paddy fields in Hokkaido, Japan. B510 significantly enhanced the growth of newly generated leaves and shoot biomass under greenhouse conditions. When rice seedlings were treated with 1×10⁸ CFU ml^-1, then transplanted to paddy fields, tiller numbers and seed yield significantly increased. Azospirillum sp. strain B510 is a promising bacterial inoculant for plant growth promotion and agricultural practices.

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