The Plant Growth-Promoting Bacteria Azospirillum amazonense: Genomic Versatility and Phytohormone Pathway
Joint Authors
Cecagno, Ricardo
Fritsch, Tiago Ebert
Schrank, Irene Silveira
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-19
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The rhizosphere bacterium Azospirillum amazonense associates with plant roots to promote plant growth.
Variation in replicon numbers and rearrangements is common among Azospirillum strains, and characterization of these naturally occurring differences can improve our understanding of genome evolution.
We performed an in silico comparative genomic analysis to understand the genomic plasticity of A.
amazonense.
The number of A.
amazonense-specific coding sequences was similar when compared with the six closely related bacteria regarding belonging or not to the Azospirillum genus.
Our results suggest that the versatile gene repertoire found in A.
amazonense genome could have been acquired from distantly related bacteria from horizontal transfer.
Furthermore, the identification of coding sequence related to phytohormone production, such as flavin-monooxygenase and aldehyde oxidase, is likely to represent the tryptophan-dependent TAM pathway for auxin production in this bacterium.
Moreover, the presence of the coding sequence for nitrilase indicates the presence of the alternative route that uses IAN as an intermediate for auxin synthesis, but it remains to be established whether the IAN pathway is the Trp-independent route.
Future investigations are necessary to support the hypothesis that its genomic structure has evolved to meet the requirement for adaptation to the rhizosphere and interaction with host plants.
American Psychological Association (APA)
Cecagno, Ricardo& Fritsch, Tiago Ebert& Schrank, Irene Silveira. 2015. The Plant Growth-Promoting Bacteria Azospirillum amazonense: Genomic Versatility and Phytohormone Pathway. BioMed Research International،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1057162
Modern Language Association (MLA)
Cecagno, Ricardo…[et al.]. The Plant Growth-Promoting Bacteria Azospirillum amazonense: Genomic Versatility and Phytohormone Pathway. BioMed Research International No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1057162
American Medical Association (AMA)
Cecagno, Ricardo& Fritsch, Tiago Ebert& Schrank, Irene Silveira. The Plant Growth-Promoting Bacteria Azospirillum amazonense: Genomic Versatility and Phytohormone Pathway. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1057162
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1057162