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- Title
Draft genome sequencing of halotolerant bacterium Salinicola sp. DM10 unravels plant growth-promoting potentials.
- Authors
Nguyen, Ngoc-Lan; Van Dung, Vu; Van Tung, Nguyen; Nguyen, Thi Kim Lien; Quan, Nguyen Duc; Giang, Tran Thi Huong; Ngan, Nguyen Thi Thanh; Hien, Nguyen Thanh; Nguyen, Huy-Hoang
- Abstract
In this study, strain DM10 was isolated from mangrove roots and characterized as a halotolerant plant growth-promoting bacterium. Strain DM10 exhibited the ability to solubilize phosphate, produce siderophore, show 1-aminocyclopropane-1-carboxylic acid deaminase activity, and hydrolyze starch. The rice plants subjected to a treatment of NaCl (200 mM) and inoculated with strain DM10 showed an improvement in the shoot length, root length, and dried weight, when compared to those exposed solely to saline treatment. The comprehensive genome sequencing of strain DM10 revealed a genome spanning of 4,171,745 bp, harboring 3626 protein coding sequences. Within its genome, strain DM10 possesses genes responsible for both salt-in and salt-out strategies, indicative of a robust genetic adaptation aimed at fostering salt tolerance. Additionally, the genome encodes genes involved in phosphate solubilization, such as the synthesis of gluconic acid, high-affinity phosphate transport systems, and alkaline phosphatase. In the genome of DM10, we identified the acdS gene, responsible for encoding 1-aminocyclopropane-1-carboxylate deaminase, as well as the amy1A gene, which encodes α-amylase. Furthermore, the genome of DM10 contains sequences associated with the iron (3+)-hydroxamate and iron uptake clusters, responsible for siderophore production. Such data provide a deep understanding of the mechanism employed by strain DM10 to combat osmotic and salinity stress, facilitate plant growth, and elucidate its molecular-level behaviors.
- Subjects
PLANT growth; NUCLEOTIDE sequencing; IRON clusters; MANGROVE plants; GLUCONIC acid; ALKALINE phosphatase; AMINO acid sequence
- Publication
3 Biotech, 2023, Vol 13, p1
- ISSN
2190-572X
- Publication type
Article
- DOI
10.1007/s13205-023-03833-3