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Assessment of the capacity of beneficial bacterial inoculants to enhance canola (Brassica napus L.) growth under low water activity

Premachandra, Dasun, Hudek, Lee, Enez, Aydin, Ballard, Ross, Barnett, Steve, Franco, Christopher MM and Brau, Lambert 2020, Assessment of the capacity of beneficial bacterial inoculants to enhance canola (Brassica napus L.) growth under low water activity, Agronomy, vol. 10, no. 9, pp. 1-25, doi: 10.3390/agronomy10091449.

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Title Assessment of the capacity of beneficial bacterial inoculants to enhance canola (Brassica napus L.) growth under low water activity
Author(s) Premachandra, Dasun
Hudek, LeeORCID iD for Hudek, Lee orcid.org/0000-0002-5722-9346
Enez, Aydin
Ballard, Ross
Barnett, Steve
Franco, Christopher MM
Brau, LambertORCID iD for Brau, Lambert orcid.org/0000-0001-7105-8339
Journal name Agronomy
Volume number 10
Issue number 9
Article ID 1449
Start page 1
End page 25
Total pages 25
Publisher MDPI AG
Place of publication Basel, Switzerland
Publication date 2020-09
ISSN 2073-4395
Keyword(s) Brassica napus L. (canola)
PGPB
water activity
plant growth promoting traits
sustainable agriculture
Summary Canola (Brassica napus L.) is the third largest crop produced in Australia after wheat and barley. For such crops, the variability of water access, reduced long-term annual rainfall and increasing water prices, higher overall production costs, and variability in production quantity and quality are driving the exploration of new tools to maintain production in an economical and environmentally sustainable way. Microorganisms associated with the rhizosphere have been shown to enhance plant growth and offer a potential way to maintain or even increase crop production quality and yield in an environmentally sustainable way. Here, seven bacterial isolates from canola rhizosphere samples are shown to enhance canola growth, particularly in low water activity systems. The seven strains all possessed commonly described plant growth promoting traits, including the ability to produce indole-3-acetic acid and 1-aminocyclopropane-1-carboxylate deaminase, and the capacity to solubilise nutrients (Fe2+/3+ and PO43−). When the isolates were inoculated at the time of sowing in pot-based systems with either sand or clay loam media, and in field trials, a significant increase in dry root and shoot biomass was recorded compared to uninoculated controls. It is likely that the strains’ plant growth promoting capacity under water stress is due to the combined effects of the bacterial phenotypes examined here.
Language eng
DOI 10.3390/agronomy10091449
Indigenous content off
Field of Research 0502 Environmental Science and Management
0703 Crop and Pasture Production
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30143355

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.