Journal of Microbiology

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

The hrp pathogenicity island of Pseudomonas syringae pv. tomato DC3000 is induced by plant phenolic acids: Jun Seung Lee , Hye Ryun Ryu , Ji Young Cha , Hyung Suk Baik; J. Microbiol. 2015;53(10):725-731. Published online October 2, 2015; DOI: https://doi.org/10.1007/s12275-015-5256-4

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Plants produce a wide array of antimicrobial compounds, such as phenolic compounds, to combat microbial pathogens. The hrp PAI is one of the major virulence factors in the plant pathogen, Pseudomonas syringae. A major role of hrp PAI is to disable the plant defense system during bacterial invasion. We examined the influence of phenolic compounds on hrp PAI gene expression at low and high concentrations. There was approximately 2.5 times more hrpA and hrpZ mRNA in PtoDC3000 that was grown in minimal media (MM) supplemented with 10 μM of ortho-coumaric acid than in PtoDC3000 grown in MM alone. On the other hand, a significantly lower amount of hrpA mRNA was observed in bacteria grown in MM supplemented with a high concentration of phenolic compounds. To determine the regulation pathway for hrp PAI gene expression, we performed qRTPCR using gacS, gacA, and hrpS deletion mutants.

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Nathalie Soethe, Michelle T. Hulin, Antje Balasus, Gail Preston, Christoph‐Martin Geilfus
Journal of Plant Nutrition and Soil Science.2024; 187(3): 301. CrossRef
Regulation of the Pseudomonas syringae Type III Secretion System by Host Environment Signals
Megan R. O’Malley, Jeffrey C. Anderson
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Quantification of Viable Cells of Pseudomonas syringae pv. tomato in Tomato Seed Using Propidium Monoazide and a Real-Time PCR Assay
A-li Chai, Hai-yan Ben, Wei-tao Guo, Yan-xia Shi, Xue-wen Xie, Lei Li, Bao-ju Li
Plant Disease.2020; 104(8): 2225. CrossRef
Validation of RT-qPCR Approaches to MonitorPseudomonas syringaeGene Expression During Infection and Exposure to Pattern-Triggered Immunity
Amy Smith, Amelia H. Lovelace, Brian H. Kvitko
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Multidrug Efflux Pumps at the Crossroad between Antibiotic Resistance and Bacterial Virulence
Manuel Alcalde-Rico, Sara Hernando-Amado, Paula Blanco, José L. Martínez
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Global Analysis of Type Three Secretion System and Quorum Sensing Inhibition of Pseudomonas savastanoi by Polyphenols Extracts from Vegetable Residues
Carola Biancalani, Matteo Cerboneschi, Francesco Tadini-Buoninsegni, Margherita Campo, Arianna Scardigli, Annalisa Romani, Stefania Tegli, Boris Alexander Vinatzer
PLOS ONE.2016; 11(9): e0163357. CrossRef

Effect of Fumarate Reducing Bacteria on In Vitro Rumen Fermentation, Methane Mitigation and Microbial Diversity: Lovelia Mamuad , Seon Ho Kim , Chang Dae Jeong , Yeon Jae Choi , Che Ok Jeon , Sang-Suk Lee; J. Microbiol. 2014;52(2):120-128. Published online February 1, 2014; DOI: https://doi.org/10.1007/s12275-014-3518-1

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Abstract

The metabolic pathways involved in hydrogen (H2) production, utilization and the activity of methanogens are the important factors that should be considered in controlling methane (CH4) emissions by ruminants. H2 as one of the major substrate for CH4 production is therefore should be controlled. One of the strategies on reducing CH4 is through the use of hydrogenotrophic microorganisms such as fumarate reducing bacteria. This study determined the effect of fumarate reducing bacteria, Mitsuokella jalaludinii, supplementation on in vitro rumen fermentation, CH4 production, diversity and quantity. M. jalaludinii significantly reduced CH4 at 48 and 72 h of incubation and significantly increased succinate at 24 h. Although not significantly different, propionate was found to be highest in treatment containing M. jalaludinii at 12 and 48 h of incubation. These results suggest that supplementation of fumarate reducing bacteria to ruminal fermentation reduces CH4 production and quantity, increases succinate and changes the rumen microbial diversity.

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Prasanta Kumar Choudhury, Rajashree Jena, Sudhir Kumar Tomar, Anil Kumar Puniya
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Dan Xue, Huai Chen, Xiaolin Luo
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Different milk replacers alter growth performance and rumen bacterial diversity of dairy bull calves
Yangdong Zhang, Jing Cheng, Nan Zheng, Yuanqing Zhang, Di Jin
Livestock Science.2020; 231: 103862. CrossRef
Metabolic Hydrogen Flows in Rumen Fermentation: Principles and Possibilities of Interventions
Emilio M. Ungerfeld
Frontiers in Microbiology.2020;[Epub] CrossRef
Rumen fermentation and microbial community composition influenced by live Enterococcus faecium supplementation
Lovelia L. Mamuad, Seon Ho Kim, Ashraf A. Biswas, Zhongtang Yu, Kwang-Keun Cho, Sang-Bum Kim, Kichoon Lee, Sang Suk Lee
AMB Express.2019;[Epub] CrossRef
Advanced estimation and mitigation strategies: a cumulative approach to enteric methane abatement from ruminants
Mahfuzul Islam, Sang-Suk Lee
Journal of Animal Science and Technology.2019; 61(3): 122. CrossRef
Recent insight and future techniques to enhance rumen fermentation in dairy goats
Lovelia L. Mamuad, Sung Sill Lee, Sang Suk Lee
Asian-Australasian Journal of Animal Sciences.2019; 32(8): 1321. CrossRef
Effects of illite supplementation on in vitro and in vivo rumen fermentation, microbial population and methane emission of Hanwoo steers fed high concentrate diets
Ashraf A. Biswas, Sung‐Sill Lee, Lovelia L. Mamuad, Seon‐Ho Kim, Yeon‐Jae Choi, Chanhee Lee, Kichoon Lee, Gui‐Seck Bae, Sang‐Suk Lee
Animal Science Journal.2018; 89(1): 114. CrossRef
Effect of different concentrate diet levels on rumen fluid inoculum used for determination of in vitro rumen fermentation, methane concentration, and methanogen abundance and diversity
Seon-Ho Kim, Lovelia L. Mamuad, Eun-Joong Kim, Ha-Guyn Sung, Gui-Seck Bae, Kwang-Keun Cho, Chanhee Lee, Sang-Suk Lee
Italian Journal of Animal Science.2018; 17(2): 359. CrossRef
Methanobacterium formicicum as a target rumen methanogen for the development of new methane mitigation interventions: A review
P Chellapandi, M Bharathi, C Sangavai, R Prathiviraj
Veterinary and Animal Science.2018; 6: 86. CrossRef
Rumen prokaryotic communities of ruminants under different feeding paradigms on the Qinghai-Tibetan Plateau
Dan Xue, Huai Chen, Xinquan Zhao, Shixiao Xu, Linyong Hu, Tianwei Xu, Lin Jiang, Wei Zhan
Systematic and Applied Microbiology.2017; 40(4): 227. CrossRef
Increased propionate concentration inLactobacillus mucosae-fermented wet brewers grains and duringin vitrorumen fermentation
L.L. Mamuad, S.H. Kim, Y.J. Choi, A.P. Soriano, K.K. Cho, K. Lee, G.S. Bae, S.S. Lee
Journal of Applied Microbiology.2017; 123(1): 29. CrossRef
Use of Lysozyme as a Feed Additive on In vitro Rumen Fermentation and Methane Emission
Ashraf A. Biswas, Sung Sill Lee, Lovelia L. Mamuad, Seon-Ho Kim, Yeon-Jae Choi, Gui-Seck Bae, Kichoon Lee, Ha-Guyn Sung, Sang-Suk Lee
Asian-Australasian Journal of Animal Sciences.2016; 29(11): 1601. CrossRef
Quantification of organic acids in ruminal in vitro batch culture fermentation supplemented with fumarate using a herb mix as a substrate
J. Pisarčíková, Z. Váradyová, K. Mihaliková, S. Kišidayová, J. Plaizier
Canadian Journal of Animal Science.2016; 96(1): 60. CrossRef
Rumen fermentation and performance of Hanwoo steers fed total mixed ration with Korean rice wine residue
Chang-Dae Jeong, Lovelia L. Mamuad, Jong Youl Ko, Ha Guyn Sung, Keun Kyu Park, Yoo Kyung Lee, Sang-Suk Lee
Journal of Animal Science and Technology.2016;[Epub] CrossRef
Limits to Dihydrogen Incorporation into Electron Sinks Alternative to Methanogenesis in Ruminal Fermentation
Emilio M. Ungerfeld
Frontiers in Microbiology.2015;[Epub] CrossRef
Effect of Soybean Meal and Soluble Starch on Biogenic Amine Production and Microbial Diversity Using In vitro Rumen Fermentation
Chang-Dae Jeong, Lovelia L. Mamuad, Seon-Ho Kim, Yeon Jae Choi, Alvin P. Soriano, Kwang Keun Cho, Che-Ok Jeon, Sung Sil Lee, Sang-Suk Lee
Asian-Australasian Journal of Animal Sciences.2014; 28(1): 50. CrossRef

Research Support, U.S. Gov't, Non-P.H.S.

Transcriptional Control of Genes Involved in Yeast Phospholipid Biosynthesis: Roshini Wimalarathna , Chen-Han Tsai , Chang-Hui Shen; J. Microbiol. 2011;49(2):265-273. Published online May 3, 2011; DOI: https://doi.org/10.1007/s12275-011-1130-1

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Abstract: Phospholipid biosynthetic genes encode enzymes responsible for phospholipid biosynthesis. They are coordinately regulated by the availability of phospholipid precursors through the inositol-sensitive upstream activating sequence (UASINO). However, not all phospholipid genes are UASINO-containing genes and not all UASINO-containing genes have the same response to the phospholipid precursors. Therefore, the transcriptional regulation of phospholipid genes in response to the availability of phospholipid precursors is still unclear. Here, 22 out of 47 phospholipid biosynthetic genes were identified as UASINO-containing genes, including EKI1, EPT1, INM1, IPK2, KCS1, PAH1, and PIK1 which have never been reported before. We also showed, using qRTPCR technique, that 12 UASINO-containing genes are down-regulated by 100 μM inositol in the wild type cells and up-regulated by 100 μM inositol in the ino2Δ cells. Therefore, it is possible that these genes are transcriptionally regulated by the UASINO through the negative response of Ino2p to inositol. One other UASINO-containing gene might be regulated by the positive response of Ino2p to 100 μM inositol. Surprisingly, we found 9 UASINO-containing genes are not dependent on the response of Ino2p to 100 μM inositol, indicating that they may be regulated by other pathway. Furthermore, we identified 9 and 3 non-UASINO-containing genes that are possibly regulated by the negative and positive response of Ino2p to 100 μM inositol, respectively. Therefore, these observations provide insight into the understanding of the co-regulated phospholipid biosynthetic genes expression.

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