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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제18권 제5호
- 발행연도
- 2008.1
- 수록면
- 805 - 814 (10page)
이용수
초록· 키워드
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Liming of acidic soils can prevent aluminum toxicity and
improve crop production. Some maize lines show aluminum
(Al) tolerance, and exudation of organic acids by roots has
been considered to represent an important mechanism
involved in the tolerance. However, there is no information
about the impact of liming on the structures of bacterial
and fungal communities in Cerrado soil, nor if there are
differences between the microbial communities from the
rhizospheres of Al-tolerant and Al-sensitive maize lines.
This study evaluated the effects of liming on the structure
of bacterial and fungal communities in bulk soil and
rhizospheres of Al-sensitive and Al-tolerant maize (Zea
mays L.) lines cultivated in Cerrado soil by PCR-DGGE,
30 and 90 days after sowing. Bacterial fingerprints revealed
that the bacterial communities from rhizospheres were
more affected by aluminum stress in soil than by the maize
line (Al-sensitive or Al-tolerant). Differences in bacterial
communities were also observed over time (30 and 90
days after sowing), and these occurred mainly in the
Actinobacteria. Conversely, fungal communities from the
rhizosphere were weakly affected either by liming or by
the rhizosphere, as observed from the DGGE profiles.
Furthermore, only a few differences were observed in the
DGGE profiles of the fungal populations during plant
development when compared with bacterial communities.
Cloning and sequencing of 16S rRNA gene fragments
obtained from dominant DGGE bands detected in the
bacterial profiles of the Cerrado bulk soil revealed that
Actinomycetales and Rhizobiales were among the dominant
ribotypes.
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참고문헌 (22)
참고문헌 신청
American Association of Cereal Chemists / 1976 / Approved Methods of the American Association of Cereal Chemists
Anderson, I. C. / 2004 / Diversity and ecology of soil fungal communities: Increased understanding through the application of molecular techniques. Environ / Microbiol 6 : 76
Baldani, J. I. / 2005 / History on the biological nitrogen fixation research in graminaceous plants: Special emphasis on the Brazilian experience. An. Acad. Bras / Cienc 77 :
Barelo, J. / 2002 / Fast root growth responses, rootc exudates, and internal detoxification as clues to the mechanisms of aluminum toxicity and resistance: A review. Environ.
Bastian, F. / 1998 / Production of indole-3-acetic acid and gibberellins A1 and A3 by Acetobacter diazotrophicus and Herbaspirillum seropedicae in chemically-defined culture
Anderson, I. C. / 2004 / Diversity and ecology of soil fungal communities: Increased understanding through the application of molecular techniques. Environ / Microbiol 6 : 76
Baldani, J. I. / 2005 / History on the biological nitrogen fixation research in graminaceous plants: Special emphasis on the Brazilian experience. An. Acad. Bras / Cienc 77 :
Barelo, J. / 2002 / Fast root growth responses, rootc exudates, and internal detoxification as clues to the mechanisms of aluminum toxicity and resistance: A review. Environ.
Bastian, F. / 1998 / Production of indole-3-acetic acid and gibberellins A1 and A3 by Acetobacter diazotrophicus and Herbaspirillum seropedicae in chemically-defined culture
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