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8. Genome insights into the plant growth-promoting bacterium Saccharibacillus brassicae ATSA2T.

Author

Jiang, Lingmin, Seo, Jiyoon, Peng, Yuxin, Jeon, Doeun, Park, Soon Ju, Kim, Cha Young, Kim, Pyoung Il, Kim, Chul Hong, Lee, Ju Huck, and Lee, Jiyoung

Subjects
*PLANT genomes, *PLASMODIOPHORA brassicae, *INDOLEACETIC acid, *BOK choy, *METABOLITES, *IRON clusters, *PEPPERS, *CABBAGE
Abstract

Endophytes can facilitate the improvement of plant growth and health in agriculturally important crops, yet their genomes and secondary metabolites remain largely unexplored. We previously isolated Saccharibacillus brassicae strain ATSA2T from surface-sterilized seeds of kimchi cabbage and represented a novel species of the genus Saccharibacillus. In this study, we evaluated the plant growth-promoting (PGP) effect of strain ATSA2T in kimchi cabbage, bok choy, and pepper plants grown in soils. We found a significant effect on the shoot and root biomass, and chlorophyll contents following strain ATSA2T treatment. Strain ATSA2T displayed PGP traits such as indole acetic acid (IAA, 62.9 μg/mL) and siderophore production, and phosphate solubilization activity. Furthermore, genome analysis of this strain suggested the presence of gene clusters involved in iron acquisition (fhuABD, afuABC, fbpABC, and fepCDG) and phosphate solubilization (pstABCHS, phoABHLU, and phnCDEP) and other phytohormone biosynthesis genes, including indole-3-acetic acid (trpABCDEFG), in the genome. Interestingly, the secondary metabolites cerecidin, carotenoid, siderophore (staphylobactin), and bacillaene underlying plant growth promotion were found in the whole genome via antiSMASH analysis. Overall, physiological testing and genome analysis data provide comprehensive insights into plant growth-promoting mechanisms, suggesting the relevance of strain ATSA2T in agricultural biotechnology. [ABSTRACT FROM AUTHOR]

Published
2023
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9. Genome insights into the plant growth-promoting bacterium Saccharibacillus brassicae ATSA2T.

Author

Jiang, Lingmin, Seo, Jiyoon, Peng, Yuxin, Jeon, Doeun, Park, Soon Ju, Kim, Cha Young, Kim, Pyoung Il, Kim, Chul Hong, Lee, Ju Huck, and Lee, Jiyoung

Subjects
PLANT genomes, PLASMODIOPHORA brassicae, INDOLEACETIC acid, BOK choy, METABOLITES, IRON clusters, PEPPERS, CABBAGE
Abstract

Endophytes can facilitate the improvement of plant growth and health in agriculturally important crops, yet their genomes and secondary metabolites remain largely unexplored. We previously isolated Saccharibacillus brassicae strain ATSA2T from surface-sterilized seeds of kimchi cabbage and represented a novel species of the genus Saccharibacillus. In this study, we evaluated the plant growth-promoting (PGP) effect of strain ATSA2T in kimchi cabbage, bok choy, and pepper plants grown in soils. We found a significant effect on the shoot and root biomass, and chlorophyll contents following strain ATSA2T treatment. Strain ATSA2T displayed PGP traits such as indole acetic acid (IAA, 62.9 μg/mL) and siderophore production, and phosphate solubilization activity. Furthermore, genome analysis of this strain suggested the presence of gene clusters involved in iron acquisition (fhuABD, afuABC, fbpABC, and fepCDG) and phosphate solubilization (pstABCHS, phoABHLU, and phnCDEP) and other phytohormone biosynthesis genes, including indole-3-acetic acid (trpABCDEFG), in the genome. Interestingly, the secondary metabolites cerecidin, carotenoid, siderophore (staphylobactin), and bacillaene underlying plant growth promotion were found in the whole genome via antiSMASH analysis. Overall, physiological testing and genome analysis data provide comprehensive insights into plant growth-promoting mechanisms, suggesting the relevance of strain ATSA2T in agricultural biotechnology. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

24. Exfoliated metal oxide nanosheets as effective and applicable substrates for atomically dispersed metal nanoparticles with tailorable functionalities

Author

Seong Ju Hwang, Xiaoyan Jin, Sandipan Bera, Minho Kim, In Young Kim, Wan In Lee, Hyungjun Kim, Nam-Suk Lee, Yun Kyung Jo, Jiyoon Seo, Seo, Jiyoon, Jin, Xiaoyan, Kim, Minho, Kim, In Young, Jo, Yun Kyung, Bera, Sandipan, Lee, Nam-Suk, Lee, Wan In, Kim, Hyungjun, and Hwang, Seong-Ju

Subjects
Materials science, Oxide, Nanoparticle, Nanotechnology, Crystal growth, 02 engineering and technology, Crystal structure, 010402 general chemistry, 01 natural sciences, surface structure, Crystal, symbols.namesake, chemistry.chemical_compound, functionality, Mechanical Engineering, controlled crystal growth, 021001 nanoscience & nanotechnology, Titanate, 0104 chemical sciences, chemistry, Mechanics of Materials, Titanate nanosheet, inorganic nanosheet, symbols, 0210 nano-technology, Raman spectroscopy, atomically dispersed metal nanoparticles
Abstract

An effective methodology to stabilize highly dispersed metal nanoparticles is developed by employing the exfoliated 2D metal oxide nanosheets with variable surface structures as substrates. The selection of appropriate crystal structure of titanate nanosheet is very crucial in stabilizing atomically dispersed Pt nanoparticles through the tuning of chemical interaction between Pt and titanate substrate. A theoretical study using density functional theory calculations confirms the significant influence of the crystal structure of layered titanate nanosheet on the crystal growth behavior of immobilized metal nanoparticle. As a consequence of the good dispersion of Pt nanoparticles, the Pt–trititanate nanohybrids with stronger interaction show much higher content of atomically dispersed Pt and better catalyst performances than do the Pt–lepidocrocite titanate ones. The applicability of the present method for other metal species is evidenced by the successful tuning of the crystal size and functionality of Au nanoparticles via immobilization on layered titanate nanosheets. The functionality of Au for surface-enhanced Raman spectroscopy becomes improved by the anchoring on the lepidocrocite-type titanate nanosheet. The present study underscores that the use of the metal oxide 2D nanosheets with appropriate surface structure as substrates is effective in tailoring the crystal growth and the functionalities of immobilized metal nanoparticles. Refereed/Peer-reviewed

Published
2016

25. In situ formation of conductive metal sulfide domain in metal oxide matrix: an efficient way to improve the electrochemical activity of semiconducting metal oxide

Author

Seung Mi Oh, Seong Ju Hwang, Jiyoon Seo, Sharad B. Patil, In Young Kim, Kim, In Young, Seo, Jiyoon, Oh, Seung Mi, Patil, Sharad B, and Hwang, Seong-Ju

Subjects
metal sulfide, Materials science, Sulfide, batteries, Chemistry, Multidisciplinary, Inorganic chemistry, Materials Science, composite materials, Oxide, chemistry.chemical_element, Materials Science, Multidisciplinary, Electrochemistry, Physics, Applied, Biomaterials, Metal, chemistry.chemical_compound, in situ formation, Nanoscience & Nanotechnology, Lithium titanate, chemistry.chemical_classification, Nanocomposite, Chemistry, Physical, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, electrodes, Chemistry, chemistry, Chemical engineering, Physics, Condensed Matter, visual_art, Electrode, visual_art.visual_art_medium, Science & Technology - Other Topics, Lithium
Abstract

A new effective way to improve the electrochemical activity of semiconducting metal oxide is developed by the in situ formation of conductive metal sulfide domain in the metal oxide matrix. The Li0.96Ti1.08S2-Li4Ti5O12 nanocomposites with tunable compositions and electrical properties are synthesized by the reaction of Li4Ti5O12 with CS2 at elevated temperature. The resulting incorporation of conductive Li0.96Ti1.08S2 domain in the Li4Ti5O12 matrix is effective in enhancing the electrical conductivity and electrode activity of semiconducting lithium titanate. As anode materials for lithium ion batteries, the obtained Li0.96Ti1.08S2-Li4Ti5O12 nanocomposites show much greater discharge capacity and better rate characteristics than does the pristine Li4Ti5O12. The usefulness of the present method is further evidenced from the improvement of the electrochemical activity of semiconducting CsTi2NbO7 after the reaction with CS2. The present study clearly demonstrates the in situ formation of conductive metal sulfide domain using CS2 liquid can provide an efficient and universal way to improve the electrode functionality of semiconducting metal oxide. Refereed/Peer-reviewed

Published
2015

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