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Title: Plant growth promoting abilities of novel Burkholderia-related genera and their interactions with some economically important tree species
Authors: Madhaiyan, Munusamy
Selvakumar, Govindan
Tan, Alex Hian Hwee
Cai, Lin
Ji, Lianghui
Keywords: Science::Biological sciences
Issue Date: 2021
Source: Madhaiyan, M., Selvakumar, G., Tan, A. H. H., Cai, L. & Ji, L. (2021). Plant growth promoting abilities of novel Burkholderia-related genera and their interactions with some economically important tree species. Frontiers in Sustainable Food Systems, 5, 618305-.
Journal: Frontiers in Sustainable Food Systems
Abstract: A survey of bacterial endophytes associated with the leaves of oil palm and acacias resulted in the isolation of 19 bacterial strains belonging to the genera Paraburkholderia, Caballeronia, and Chitinasiproducens, which are now regarded as distinctively different from the parent genus Burkholderia. Most strains possessed one or more plant growth promotion (PGP) traits although nitrogenase activity was present in only a subset of the isolates. The diazotrophic Paraburkholderia tropica strain S39-2 with multiple PGP traits and the non-diazotrophic Chitinasiproducens palmae strain JS23T with a significant level of 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity were selected to investigate the influence of bacterial inoculation on some economically important tree species. Microscopic examination revealed that P. tropica S39-2 was rhizospheric as well as endophytic while C. palmae JS23T was endophytic. P. tropica strain S39-2 significantly promoted the growth of oil palm, eucalyptus, and Jatropha curcas. Interestingly, the non-diazotrophic, non-auxin producing C. palmae JS23T strain also significantly promoted the growth of oil palm and eucalyptus although it showed negligible effect on J. curcas. Our results suggest that strains belonging to the novel Burkholderia-related genera widely promote plant growth via both N-independent and N-dependent mechanisms. Our results also suggest that the induction of defense response may prevent the colonization of an endophyte in plants.
ISSN: 2571-581X
DOI: 10.3389/fsufs.2021.618305
Schools: School of Biological Sciences 
Organisations: Temasek Life Sciences Laboratory
Rights: © 2021 Madhaiyan, Selvakumar, Alex, Cai and Ji. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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