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Enhancement of the aroma compound 2-acetyl-1-pyrroline in thai jasmine rice (Oryza sativa) by rhizobacteria under salt stress

Chinachanta, K, Shutsrirung, A, Herrmann, Laetitia, Lesueur, Didier and Pathom-Aree, W 2021, Enhancement of the aroma compound 2-acetyl-1-pyrroline in thai jasmine rice (Oryza sativa) by rhizobacteria under salt stress, Biology, vol. 10, no. 1065, pp. 1-16, doi: 10.3390/biology10101065.

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Title Enhancement of the aroma compound 2-acetyl-1-pyrroline in thai jasmine rice (Oryza sativa) by rhizobacteria under salt stress
Author(s) Chinachanta, K
Shutsrirung, A
Herrmann, Laetitia
Lesueur, Didier
Pathom-Aree, W
Journal name Biology
Volume number 10
Issue number 1065
Start page 1
End page 16
Total pages 16
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2021
ISSN 2079-7737
2079-7737
Keyword(s) 2-acetyl-1-pyrroline
2AP
aromatic rice
Oryza sativa
plant growth-promoting rhizobacteria
salinity stress
Thai jasmine rice
Summary Thai jasmine rice (Oryza sativa L. KDML105), particularly from inland salt-affected areas in Thailand, is both domestically and globally valued for its unique aroma and high grain quality. The key aroma compound, 2-acetyl-1-pyrroline (2AP), has undergone a gradual degradation due to anthropogenic soil salinization driven by excessive chemical input and climate change. Here, we propose a cheaper and an ecofriendly solution to improve the 2AP levels, based on the application of plant growth-promoting rhizobacteria (PGPR). In the present study, nine PGPR isolates from rice rhizosphere were investigated for the 2AP production in liquid culture and the promotion potential for 2AP content in KDML105 rice seedlings under four NaCl concentrations (0, 50, 100, and 150 mM NaCl). The inoculation of 2AP-producing rhizobacteria resulted in an increase in 2AP content in rice seedling leaves with the maximum enhancement from Sinomonas sp. ORF15-23 at 50 mM NaCl (19.6 µg·kg−1), corresponding to a 90.2% increase as compared to the control. Scanning electron microscopy confirmed the colonization of Sinomonas sp. ORF15-23 in the roots of salinity-stressed KDML105 seedlings. Our results provide evidence that Sinomonas sp. ORF15-23 could be a promising PGPR isolate in promoting aroma level of Thai jasmine rice KDML105 under salt stress.
Language eng
DOI 10.3390/biology10101065
Indigenous content off
Field of Research 06 Biological Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30158587

Document type: Journal Article
Collections: Faculty of Science, Engineering and Built Environment
Open Access Collection
Centre for Regional and Rural Futures
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Created: Thu, 18 Nov 2021, 15:36:27 EST

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.