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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.6
- 수록면
- 135 - 149 (15page)
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초록· 키워드
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In order to obtain promising rice growth-promoting microbial strains that can be used as substitutes for chemical fertilizers, 172 bacterial strains were isolated from rice roots grown in Korean and Russian soils. Out of them, the strains KR076, KR083, KR181 and RRj228 showed plant growth-promoting activities on maize seedlings. Bacillus megaterium KR076 and Bacillus sp. KR083 showed both nitrogen-fixing and plant growth-promoting activities, while Rhizobium sp. KR181 and Pseudomonas sp. RRj228 appeared to support only plant growth-promotion, but not N2 fixation. Especially, RRj228 showed high growth promoting activity at low concentrations. Inoculation studies with KR083 and RRj228 revealed a high affinity to the Japonica rice variety such as Junambyeo than the Korean Tongil type variety such as Arumbyeo. Both KR083 and RRj228 strains showed rhizoplane and/or endophytic colonization in Japonica and Tongil types rice when soaked with the bacterial suspension of 1.1 × 10<SUP>5</SUP> cfu ml<SUP>-1</SUP> for six and twelve hours. However, the total bacterial cell numbers were higher in the roots of Japonica variety than in the Tongil type. In inoculation trials with Daesanbyeo rice variety, the seedlings inoculated with KR181 and RRj228 at the rate of 2.0 × 10<SUP>6</SUP> cfu ml-1 showed yield increment of 35% and 33% (p < 0.01), respectively, so that they contributed to the replacement of chemical fertilizer at half doses of N, P₂O<SUP>5</SUP>, and K2O in pots. In Junambyeo rice seedlings, the strain RRj228, when inoculated with a cell suspension of 1.8 × 10<SUP>6</SUP> cfu ml<SUP>-1</SUP>, promoted 3.4% higher yield at 70% dose than at a full dose level of N 110 kg ha<SUP>-1</SUP> in field. These results suggest that the rhizobacteria KR181 and RRj228 are prospective strains for enhancing rice performance.
목차
ABSTRACT
Introduction
Materials and Methods
Results
Discussion
References
참고문헌 (55)
참고문헌 신청
Backman, P.A., P.M. Brannen, and W.F. Mahaffee. 1994. Plant responses and discase control following seed inoculation with Bacillus subtilis. p. 3-9. In M. Ryder. P.M. Stephens and C.D. Bowen (ed.) Improving plant productivity with rhizosphere bacteria. CSIRO Division of Soil, Adelaide, Australia.
Baldani, J.I., B. Pot, G. Kirchhof, E. Falsen, V.L.D. Baldani, F.L. Olivares, B. Hoste, K. Kersters, A. Hartmann, M. Gillis, and J. Dobereiner. 1996. Emended description of Herbaspirillum; inclusion of [Pseudomonas] rubrisubalbicans, a mild plant pathogen, as Herbaspirillum rubrisubalbicans comb. nov.; and classification of a group of clinical isolates (EF group 1) as Herbaspirillum species 3. Int. J. Syst. Bacteriol. 46:802-810.
Baldani, V.L.D., J.I. Baldani, and J. Dobereiner. 2001. Inoculation of rice plants with the endophytic diazatrophs Herbaspirillum seropedicae and Burkholderia spp. Biol. Fertil. Soils 30:485-491.
Barazani, O. and J. Friedman. 1999. Is IAA the major root growth factor secreted form plant-growth-mediating bacteria? J. Chem. Ecol. 25:2397-2406.
Barber, S.A. and M. Silverbush. 1984. Plant root morphology and nutrient uptake. p. 65-88. In S.A. Barber, D.R. Bouldin, D.M. Kral, and S.L. Hawkins (ed.) Roots, Nutrient and Water Influx, and Plant Growth. ASA Special Publication Number 49. Am. Soc. Agro. Madison, WI.
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UCI(KEPA) : I410-ECN-0101-2018-523-000984099