Next Article in Journal
Quantifying Leaf Trait Covariations and Their Relationships with Plant Adaptation Strategies along an Aridity Gradient
Next Article in Special Issue
Utilization of Microbial Consortia as Biofertilizers and Biopesticides for the Production of Feasible Agricultural Product
Previous Article in Journal
Haematological, Biochemical and Hormonal Biomarkers of Heat Intolerance in Military Personnel
Previous Article in Special Issue
Contrasting Effects of Forest Type and Stand Age on Soil Microbial Activities: An Analysis of Local Scale Variability
Article

Enhancement of the Aroma Compound 2-Acetyl-1-pyrroline in Thai Jasmine Rice (Oryza sativa) by Rhizobacteria under Salt Stress

1
Doctor of Philosophy Program in Environmental Soil Science, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
2
Department of Plant and Soil Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
3
Alliance of Bioversity International and Centre International of Tropical Agriculture (CIAT), Asia Hub, Common Microbial Biotechnology Platform (CMBP), Hanoi 10000, Vietnam
4
School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Melbourne, VIC 3125, Australia
5
Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), UMR Eco&Sols, Hanoi 10000, Vietnam
6
Eco&Sols, Université de Montpellier (UMR), CIRAD, Institut National de la Recherche Agricole, Alimentaire et Environnementale (INRAE), Institut de Recherche pour le Développent (IRD), Montpellier SupAgro, 34060 Montpellier, France
7
Research Center of Microbial Diversity and Sustainable Utilization, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
*
Author to whom correspondence should be addressed.
Academic Editors: Ana Alexandre and Kathrin Wippel
Biology 2021, 10(10), 1065; https://doi.org/10.3390/biology10101065
Received: 27 August 2021 / Revised: 12 October 2021 / Accepted: 13 October 2021 / Published: 19 October 2021
The major aroma compound (2-acetyl-1-pyrroline) of the world-famous Thai jasmine rice, variety KDML105, has declined due to high soil salinity and agrochemical input. In this work, the rhizobacteria from rice were investigated for the aroma compound’s production, as well as their potential for increasing the compound content in Thai jasmine rice seedlings under saline conditions. Our results provide evidence that the addition of aroma compound-producing rhizobacteria increases the aroma content in the rice seedlings under salt stress. Sinomonas sp. strain ORF15-23 which colonize the rice roots, is a promising rhizobacteria in promoting the aroma level of the Thai jasmine rice grown under salt stress and could be developed as a bioinoculant for Thai jasmine rice cultivation in a salt-affected area.
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. View Full-Text
Keywords: 2-acetyl-1-pyrroline; 2AP; aromatic rice; Thai jasmine rice; Oryza sativa; plant growth-promoting rhizobacteria; salinity stress 2-acetyl-1-pyrroline; 2AP; aromatic rice; Thai jasmine rice; Oryza sativa; plant growth-promoting rhizobacteria; salinity stress
Show Figures

Graphical abstract

MDPI and ACS Style

Chinachanta, K.; Shutsrirung, A.; Herrmann, L.; Lesueur, D.; Pathom-aree, W. Enhancement of the Aroma Compound 2-Acetyl-1-pyrroline in Thai Jasmine Rice (Oryza sativa) by Rhizobacteria under Salt Stress. Biology 2021, 10, 1065. https://doi.org/10.3390/biology10101065

AMA Style

Chinachanta K, Shutsrirung A, Herrmann L, Lesueur D, Pathom-aree W. Enhancement of the Aroma Compound 2-Acetyl-1-pyrroline in Thai Jasmine Rice (Oryza sativa) by Rhizobacteria under Salt Stress. Biology. 2021; 10(10):1065. https://doi.org/10.3390/biology10101065

Chicago/Turabian Style

Chinachanta, Kawiporn, Arawan Shutsrirung, Laetitia Herrmann, Didier Lesueur, and Wasu Pathom-aree. 2021. "Enhancement of the Aroma Compound 2-Acetyl-1-pyrroline in Thai Jasmine Rice (Oryza sativa) by Rhizobacteria under Salt Stress" Biology 10, no. 10: 1065. https://doi.org/10.3390/biology10101065

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop