Journal of Microbiology

Journal Articles

Streptomyces sp. strain SK68, isolated from peanut rhizosphere, promotes growth and alleviates salt stress in tomato (Solanum lycopersicum cv. Micro-Tom): Karthiyaini Damodharan , Sasikumar Arunachalam Palaniyandi , Bao Le , Joo-Won Suh , Seung Hwan Yang; J. Microbiol. 2018;56(10):753-759. Published online September 28, 2018; DOI: https://doi.org/10.1007/s12275-018-8120-5

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A novel actinobacterium, strain SK68, was isolated from the rhizosphere of peanut plant and its salinity stress alleviation ability was studied using tomato (Solanum lycopersicum cv. Micro-Tom) plants. Based on 16S rDNA based phylogenetic analysis, strain SK68 has been identified as a Streptomyces sp. Strain SK68 had branched substrate mycelium bearing smooth surfaced spores and the spore colour is brownish grey on ISP4 medium. It exhibited enzyme activities such as xylanase, cellulase, amylase, and pectinase and degraded hypoxanthine, casein, and L-tyrosine. The strain SK68 differed in its banding pattern in BOX-PCR and RAPD fingerprinting compared to the closely matching type strains Streptomyces erythrochromogenes NBRC 3304T (AB184746), S. flavotricini NBRC 12770T (AB184132), S. racemochromogenes NBRC 12906T (AB184235), and S. polychromogenes NBRC 13072T (NR041109). Strain SK68 was evaluated for its salinity stress-alleviating activity in tomato plants with 180 mmol/L NaCl under gnotobiotic condition. A significant increase in plant biomass was observed in strain SK68-inoculated tomato plants under salt stress compared to control and salt-stressed non-inoculated plants.

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Alleviation of drought stress in tomato by foliar application of seafood waste extract
Imen Ben Sedrine, Sirine Werghi, Afifa Hachef, Ahlem Maalaoui, Rahma Zarkouna, Samah Akriche, Hedia Hannachi, Salwa Zehdi, Hatem Fakhfakh, Faten Gorsane
Scientific Reports.2024;[Epub] CrossRef
Effects of the promoting bacterium on growth of plant under cadmium stress
Deng Yang, Mingbo Zuo, Yueli Chen, Yuan Liu, Yueqing He, Haoming Wang, Xiaoxiao Liu, Jing Xu, Minjuan Zhao, Yuanyuan Shen, Ying Liu, Gao Tianpeng
International Journal of Phytoremediation.2024; 26(3): 339. CrossRef
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Ritika Jain, Meenu Saraf
Biologia.2023; 78(9): 2303. CrossRef
In-silico analysis of atmospheric diffusion, crop planting degrading scheme, and health risk of dioxins from a domestic waste incineration plant
Qing Li, Xixi Li, Zhixing Ren, Meijn Du, Jiawen Yang, Luze Yang, Wei He, Hao Yang, Yuanyuan Zhao, Wenwen Gu, Wei Liu, Wenjin Zhao, Yu Li
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Mateus Torres Nazari, Vera Analise Schommer, Julia Catiane Arenhart Braun, Lara Franco dos Santos, Samuel Teixeira Lopes, Viviane Simon, Bruna Strieder Machado, Valdecir Ferrari, Luciane Maria Colla, Jeferson Steffanello Piccin
Rhizosphere.2023; 27: 100741. CrossRef
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Fatemeh Salimi, Mehdi Khorshidi, Fateme Amirahmadi, Atefe Amirahmadi
Current Microbiology.2023;[Epub] CrossRef
Comprehensive effects of salt stress and peanut cultivars on the rhizosphere bacterial community diversity of peanut
Yang Xu, Zhimeng Zhang, Hong Ding, Saiqun Wen, Guanchu Zhang, Feifei Qin, Liangxiang Dai
Archives of Microbiology.2022;[Epub] CrossRef
The synergy effect of arbuscular mycorrhizal fungi symbiosis and exogenous calcium on bacterial community composition and growth performance of peanut (Arachis hypogaea L.) in saline alkali soil
Dunwei Ci, Zhaohui Tang, Hong Ding, Li Cui, Guanchu Zhang, Shangxia Li, Liangxiang Dai, Feifei Qin, Zhimeng Zhang, Jishun Yang, Yang Xu
Journal of Microbiology.2021; 59(1): 51. CrossRef
The Effects of Salinity on the Anatomy and Gene Expression Patterns in Leaflets of Tomato cv. Micro-Tom
Jonas Hoffmann, Roberto Berni, Flavia Maria Sutera, Annelie Gutsch, Jean-Francois Hausman, Suzanne Saffie-Siebert, Gea Guerriero
Genes.2021; 12(8): 1165. CrossRef
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Lukáš Bystrianský, Martina Hujslová, Milan Gryndler
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Jonas Hoffmann, Roberto Berni, Jean-Francois Hausman, Gea Guerriero
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Influence of salt stress on the rhizosphere soil bacterial community structure and growth performance of groundnut (Arachis hypogaea L.)
Yang Xu, Guanchu Zhang, Hong Ding, Dunwei Ci, Liangxiang Dai, Zhimeng Zhang
International Microbiology.2020; 23(3): 453. CrossRef
Effects of PGPR microbial inoculants on the growth and soil properties of Avena sativa, Medicago sativa, and Cucumis sativus seedlings
Haiyun Li, Yizhi Qiu, Tuo Yao, Yachun Ma, Huirong Zhang, Xiaolei Yang
Soil and Tillage Research.2020; 199: 104577. CrossRef
Enhancement of growth and salt tolerance of tomato seedlings by a natural halotolerant actinobacterium Glutamicibacter halophytocola KLBMP 5180 isolated from a coastal halophyte
You-Wei Xiong, Yuan Gong, Xue-Wei Li, Pan Chen, Xiu-Yun Ju, Chun-Mei Zhang, Bo Yuan, Zuo-Peng Lv, Ke Xing, Sheng Qin
Plant and Soil.2019; 445(1-2): 307. CrossRef

Comparative analysis of bacterial diversity in the rhizosphere of tomato by culture-dependent and -independent approaches: Shin Ae Lee , Jiyoung Park , Bora Chu , Jeong Myeong Kim , Jae-Ho Joa , Mee Kyung Sang , Jaekyeong Song , Hang-Yeon Weon; J. Microbiol. 2016;54(12):823-831. Published online November 26, 2016; DOI: https://doi.org/10.1007/s12275-016-6410-3

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Abstract

The microbiome in the rhizosphere–the region surrounding plant roots–plays a key role in plant growth and health, enhancing nutrient availability and protecting plants from biotic and abiotic stresses. To assess bacterial diversity in the tomato rhizosphere, we performed two contrasting approaches: culture-dependent and -independent. In the culturedependent approach, two culture media (Reasoner’s 2A agar and soil extract agar) were supplemented with 12 antibiotics for isolating diverse bacteria from the tomato rhizosphere by inhibiting predominant bacteria. A total of 689 bacterial isolates were clustered into 164 operational taxonomic units (OTUs) at 97% sequence similarity, and these were found to belong to five bacterial phyla (Proteobacteria, Actinobacteria, Bacteroidetes, Acidobacteria, and Firmicutes). Of these, 122 OTUs were retrieved from the antibiotic-containing media, and 80 OTUs were recovered by one specific antibiotic-containing medium. In the culture-independent approach, we conducted Illumina MiSeq amplicon sequencing of the 16S rRNA gene and obtained 19,215 high-quality sequences, which clustered into 478 OTUs belonging to 16 phyla. Among the total OTUs from the MiSeq dataset, 22% were recovered in the culture collection, whereas 41% of OTUs in the culture collection were not captured by MiSeq sequencing. These
results
showed that antibiotics were effective in isolating various taxa that were not readily isolated on antibiotic-free media, and that both contrasting approaches provided complementary information to characterize bacterial diversity in the tomato rhizosphere.

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Research Support, Non-U.S. Gov'ts

A Quantitative and Direct PCR Assay for the Subspecies-Specific Detection of Clavibacter michiganensis subsp. michiganensis Based on a Ferredoxin Reductase Gene: Min Seok Cho , Jang Ha Lee , Nam Han Her , ChangKug Kim , Young-Joo Seol , Jang Ho Hahn , Ji Hyoun Baeg , Hong Gi Kim , Dong Suk Park; J. Microbiol. 2012;50(3):496-501. Published online June 30, 2012; DOI: https://doi.org/10.1007/s12275-012-1611-x

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Abstract: The Gram-positive bacterium Clavibacter michiganensis subsp. michiganensis is the causal agent of canker disease in tomato. Because it is very important to control newly introduced inoculum sources from commercial materials, the specific detection of this pathogen in seeds and seedlings is essential for effective disease control. In this study, a novel and efficient assay for the detection and quantitation of C. michiganensis subsp. michiganensis in symptomless tomato and red pepper seeds was developed. A pair of polymerase chain reaction (PCR) primers (Cmm141F/R) was designed to amplify a specific 141 bp fragment on the basis of a ferredoxin reductase gene of C. michiganensis subsp. michiganensis NCPPB 382. The specificity of the primer set was evaluated using purified DNA from 16 isolates of five C. michiganensis subspecies, one other Clavibacter species, and 17 other reference bacteria. The primer set amplified a single band of expected size from the genomic DNA obtained from the C. michiganensis subsp. michiganensis strains but not from the other C. michiganensis subspecies or from other Clavibacter species. The detection limit was a single cloned copy of the ferredoxin reductase gene of C. michiganensis subsp. michiganensis. In conclusion, this quantitative direct PCR assay can be applied as a practical diagnostic method for epidemiological research and the sanitary management of seeds and seedlings with a low level or latent infection of C. michiganensis subsp. michiganensis.

Enhancement of Growth and Yield of Tomato by Rhodopseudomonas sp. under Greenhouse Conditions: Kang-Hyeong Lee , Rae-Hyun Koh , Hong-Gyu Song; J. Microbiol. 2008;46(6):641-646. Published online December 24, 2008; DOI: https://doi.org/10.1007/s12275-008-0159-2

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Abstract: A greenhouse test was carried out to examine the effects on tomato growth of application of purple nonsulfur bacterium Rhodopseudomonas sp. which had enhanced germination and growth of tomato seed under axenic conditions. The shoot length of tomato plant inoculated by Rhodopseudomonas sp. KL9 increased by 34.6% compared to that of control in 8 weeks of cultivation. During the same period, this strain increased 120.6 and 78.6% of dry weight of shoot and root of tomato plants, respectively. The formation ratio of tomato fruit from flower was also raised by inoculation of KL9. In addition, Rhodopseudomonas sp. KL9 treatment enhanced the fresh weight and lycopene content in the harvested tomato fruits by 98.3 and 48.3%, respectively compared to those of the uninoculated control. When the effect on the indigenous bacterial community and fate of the inoculated Rhodopseudomonas sp. KL9 were monitored by denaturing gradient gel electrophoresis analysis, its application did not affect the native bacterial community in tomato rhizosphere soil, but should be repeated to maintain its population size. This bacterial capability may be applied as an environment-friendly biofertilizer to cultivation of high quality tomato and other crops including lycopene-containing vegetables and fruits.

Probiotication of Tomato Juice by Lactic Acid Bacteria: Kyung Young Yoon , Edward E. Woodams , Yong D Hang; J. Microbiol. 2004;42(4):315-318.; DOI: https://doi.org/2105 [pii]

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Abstract: This study was undertaken to determine the suitability of tomato juice as a raw material for production of probiotic juice by four lactic acid bacteria (Latobacillus acidophilus LA39, Lactobacillus plantarum C3, Lactobacillus casei A4, and Lactobacillus delbrueckii D7). Tomato juice was inoculated with a 24-h-old culture and incubated at 30oC. Changes in pH, acidity, sugar content, and viable cell counts during fermentation under controlled conditions were measured. The lactic acid cultures reduced the pH to 4.1 or below and increased the acidity to 0.65% or higher, and the viable cell counts (CFU) reached nearly 1.0 to 9.0x10^9/ml after 72 h fermentation. The viable cell counts of the four lactic acid bacteria in the fermented tomato juice ranged from 10^6 to 10^8 CFU/ml after 4 weeks of cold storage at 4oC. Probiotic tomato juice could serve as a health beverage for vegetarians or consumers who are allergic to dairy products.

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