Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam

Dang Thi Ngoc Thanh; Cao Ngoc Diep

doi:doi:10.11648/j.ajls.20140202.18

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Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam

Dang Thi Ngoc Thanh, Cao Ngoc Diep

Published in American Journal of Life Sciences (Volume 2, Issue 2)

Received: 12 March 2014 Accepted: 9 April 2014 Published: 20 April 2014

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Abstract

Rhizobacterial diversity and population dynamics in the Acrisol rhizosphere of maize grown in the eastern of South Vietnam was studied. Soil rhizosphere samples were taken in three provinces of this region. Physical and chemical characteristics of soil samples and total nitrogen-fixing and phosphate-solubilizing bacteria counts were determined by drop plate count method together with 16S rRNA gene fragments amplified from DNA using eubacterial universal primers (8F and 1492R). A total of 149 isolates were isolated on two media (Burk’s N-free and NBRIP) and all of them have ability of nitrogen fixation and phosphate solubilization together with IAA biosynthesis. Population of rhizobacteria correlated with soil pH and organic matter content in soil closely (P<0.05). The sequences from selected rhizobacteria (24 isolates) showed high degrees of similarity to those of the GenBank references strains (between 97% and 99%). From 24 isolates,13 belonged to Beta-Proteobacteria, while 11 were Firimicutes and Actinobacteria. Based on Pi value (nucleotide diversity), rhizobacteria (PGPR) group in Tay Ninh province had higher than rhizobacteria (PGPR) group in Baria-Vungtau province with the highest Theta value (per site). From these results showed that three strains (Burkholderia vietnamiensis VDN6a, VDB6a and VDN7c) revealed promising candidates with multiple beneficial characteristics and they have the potential for application as inoculants adapted to poor soils and local crops because they are not only famous strains but also are safety strains for agricultural sustainable

Published in	American Journal of Life Sciences (Volume 2, Issue 2)
DOI	10.11648/j.ajls.20140202.18
Page(s)	82-89
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Acrisols, 16S rRNA Gene Sequence, Maize, Rhizobacteria, Rhizosphere

References

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APA Style

Dang Thi Ngoc Thanh, Cao Ngoc Diep. (2014). Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam. American Journal of Life Sciences, 2(2), 82-89. https://doi.org/10.11648/j.ajls.20140202.18

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ACS Style

Dang Thi Ngoc Thanh; Cao Ngoc Diep. Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam. Am. J. Life Sci. 2014, 2(2), 82-89. doi: 10.11648/j.ajls.20140202.18

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AMA Style

Dang Thi Ngoc Thanh, Cao Ngoc Diep. Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam. Am J Life Sci. 2014;2(2):82-89. doi: 10.11648/j.ajls.20140202.18

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@article{10.11648/j.ajls.20140202.18,
  author = {Dang Thi Ngoc Thanh and Cao Ngoc Diep},
  title = {Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam},
  journal = {American Journal of Life Sciences},
  volume = {2},
  number = {2},
  pages = {82-89},
  doi = {10.11648/j.ajls.20140202.18},
  url = {https://doi.org/10.11648/j.ajls.20140202.18},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajls.20140202.18},
  abstract = {Rhizobacterial diversity and population dynamics in the Acrisol rhizosphere of maize grown in the eastern of South Vietnam was studied. Soil rhizosphere samples were taken in three provinces of this region. Physical and chemical characteristics of soil samples and total nitrogen-fixing and phosphate-solubilizing bacteria counts were determined by drop plate count method together with 16S rRNA gene fragments amplified from DNA using eubacterial universal primers (8F and 1492R). A total of 149 isolates were isolated on two media (Burk’s N-free and NBRIP) and all of them have ability of nitrogen fixation and phosphate solubilization together with IAA biosynthesis. Population of rhizobacteria correlated with soil pH and organic matter content in soil closely (P<0.05). The sequences from selected rhizobacteria (24 isolates) showed high degrees of similarity to those of the GenBank references strains (between 97% and 99%). From 24 isolates,13 belonged to Beta-Proteobacteria, while 11 were Firimicutes and Actinobacteria. Based on Pi value (nucleotide diversity), rhizobacteria (PGPR) group in Tay Ninh province had higher than rhizobacteria (PGPR) group in Baria-Vungtau province with the highest Theta value (per site). From these results showed that three strains (Burkholderia vietnamiensis VDN6a, VDB6a and VDN7c) revealed promising candidates with multiple beneficial characteristics and they have the potential for application as inoculants adapted to poor soils and local crops because they are not only famous strains but also are safety strains for agricultural sustainable},
 year = {2014}
}

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TY  - JOUR
T1  - Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam
AU  - Dang Thi Ngoc Thanh
AU  - Cao Ngoc Diep
Y1  - 2014/04/20
PY  - 2014
N1  - https://doi.org/10.11648/j.ajls.20140202.18
DO  - 10.11648/j.ajls.20140202.18
T2  - American Journal of Life Sciences
JF  - American Journal of Life Sciences
JO  - American Journal of Life Sciences
SP  - 82
EP  - 89
PB  - Science Publishing Group
SN  - 2328-5737
UR  - https://doi.org/10.11648/j.ajls.20140202.18
AB  - Rhizobacterial diversity and population dynamics in the Acrisol rhizosphere of maize grown in the eastern of South Vietnam was studied. Soil rhizosphere samples were taken in three provinces of this region. Physical and chemical characteristics of soil samples and total nitrogen-fixing and phosphate-solubilizing bacteria counts were determined by drop plate count method together with 16S rRNA gene fragments amplified from DNA using eubacterial universal primers (8F and 1492R). A total of 149 isolates were isolated on two media (Burk’s N-free and NBRIP) and all of them have ability of nitrogen fixation and phosphate solubilization together with IAA biosynthesis. Population of rhizobacteria correlated with soil pH and organic matter content in soil closely (P<0.05). The sequences from selected rhizobacteria (24 isolates) showed high degrees of similarity to those of the GenBank references strains (between 97% and 99%). From 24 isolates,13 belonged to Beta-Proteobacteria, while 11 were Firimicutes and Actinobacteria. Based on Pi value (nucleotide diversity), rhizobacteria (PGPR) group in Tay Ninh province had higher than rhizobacteria (PGPR) group in Baria-Vungtau province with the highest Theta value (per site). From these results showed that three strains (Burkholderia vietnamiensis VDN6a, VDB6a and VDN7c) revealed promising candidates with multiple beneficial characteristics and they have the potential for application as inoculants adapted to poor soils and local crops because they are not only famous strains but also are safety strains for agricultural sustainable
VL  - 2
IS  - 2
ER  -

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Author Information

Dang Thi Ngoc Thanh

Dept. Natural Science Teacher Training, Sai Gon University, HCM City, Vietnam
Cao Ngoc Diep

Dept. Microbiology Biotechnology

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Dang Thi Ngoc Thanh, Cao Ngoc Diep. (2014). Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam. American Journal of Life Sciences, 2(2), 82-89. https://doi.org/10.11648/j.ajls.20140202.18

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ACS Style

Dang Thi Ngoc Thanh; Cao Ngoc Diep. Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam. Am. J. Life Sci. 2014, 2(2), 82-89. doi: 10.11648/j.ajls.20140202.18

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AMA Style

Dang Thi Ngoc Thanh, Cao Ngoc Diep. Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam. Am J Life Sci. 2014;2(2):82-89. doi: 10.11648/j.ajls.20140202.18

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@article{10.11648/j.ajls.20140202.18,
  author = {Dang Thi Ngoc Thanh and Cao Ngoc Diep},
  title = {Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam},
  journal = {American Journal of Life Sciences},
  volume = {2},
  number = {2},
  pages = {82-89},
  doi = {10.11648/j.ajls.20140202.18},
  url = {https://doi.org/10.11648/j.ajls.20140202.18},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajls.20140202.18},
  abstract = {Rhizobacterial diversity and population dynamics in the Acrisol rhizosphere of maize grown in the eastern of South Vietnam was studied. Soil rhizosphere samples were taken in three provinces of this region. Physical and chemical characteristics of soil samples and total nitrogen-fixing and phosphate-solubilizing bacteria counts were determined by drop plate count method together with 16S rRNA gene fragments amplified from DNA using eubacterial universal primers (8F and 1492R). A total of 149 isolates were isolated on two media (Burk’s N-free and NBRIP) and all of them have ability of nitrogen fixation and phosphate solubilization together with IAA biosynthesis. Population of rhizobacteria correlated with soil pH and organic matter content in soil closely (P<0.05). The sequences from selected rhizobacteria (24 isolates) showed high degrees of similarity to those of the GenBank references strains (between 97% and 99%). From 24 isolates,13 belonged to Beta-Proteobacteria, while 11 were Firimicutes and Actinobacteria. Based on Pi value (nucleotide diversity), rhizobacteria (PGPR) group in Tay Ninh province had higher than rhizobacteria (PGPR) group in Baria-Vungtau province with the highest Theta value (per site). From these results showed that three strains (Burkholderia vietnamiensis VDN6a, VDB6a and VDN7c) revealed promising candidates with multiple beneficial characteristics and they have the potential for application as inoculants adapted to poor soils and local crops because they are not only famous strains but also are safety strains for agricultural sustainable},
 year = {2014}
}

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TY  - JOUR
T1  - Isolation and Identification of Rhizospheric Bacteria in Acrisols of Maize (Zea Mays L.) in the Eastern of South Vietnam
AU  - Dang Thi Ngoc Thanh
AU  - Cao Ngoc Diep
Y1  - 2014/04/20
PY  - 2014
N1  - https://doi.org/10.11648/j.ajls.20140202.18
DO  - 10.11648/j.ajls.20140202.18
T2  - American Journal of Life Sciences
JF  - American Journal of Life Sciences
JO  - American Journal of Life Sciences
SP  - 82
EP  - 89
PB  - Science Publishing Group
SN  - 2328-5737
UR  - https://doi.org/10.11648/j.ajls.20140202.18
AB  - Rhizobacterial diversity and population dynamics in the Acrisol rhizosphere of maize grown in the eastern of South Vietnam was studied. Soil rhizosphere samples were taken in three provinces of this region. Physical and chemical characteristics of soil samples and total nitrogen-fixing and phosphate-solubilizing bacteria counts were determined by drop plate count method together with 16S rRNA gene fragments amplified from DNA using eubacterial universal primers (8F and 1492R). A total of 149 isolates were isolated on two media (Burk’s N-free and NBRIP) and all of them have ability of nitrogen fixation and phosphate solubilization together with IAA biosynthesis. Population of rhizobacteria correlated with soil pH and organic matter content in soil closely (P<0.05). The sequences from selected rhizobacteria (24 isolates) showed high degrees of similarity to those of the GenBank references strains (between 97% and 99%). From 24 isolates,13 belonged to Beta-Proteobacteria, while 11 were Firimicutes and Actinobacteria. Based on Pi value (nucleotide diversity), rhizobacteria (PGPR) group in Tay Ninh province had higher than rhizobacteria (PGPR) group in Baria-Vungtau province with the highest Theta value (per site). From these results showed that three strains (Burkholderia vietnamiensis VDN6a, VDB6a and VDN7c) revealed promising candidates with multiple beneficial characteristics and they have the potential for application as inoculants adapted to poor soils and local crops because they are not only famous strains but also are safety strains for agricultural sustainable
VL  - 2
IS  - 2
ER  -

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