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Riahi HS, Heidarieh P, Fatahi-Bafghi M. Genus Pseudonocardia: What we know about its biological properties, abilities and current application in biotechnology. J Appl Microbiol 2021; 132:890-906. [PMID: 34469043 DOI: 10.1111/jam.15271] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Revised: 07/08/2021] [Accepted: 08/26/2021] [Indexed: 12/12/2022]
Abstract
The genus Pseudonocardia belongs to a group of Actinomycetes, and is a member of the family Pseudonocardiacea. The members of this genus are aerobic, Gram-positive, non-motile bacteria that are commonly found in soil, plant and environment. Although this genus has a low clinical significance; however, it has an important role in biotechnology due to the production of secondary metabolites, some of which have anti-bacterial, anti-fungal and anti-tumour effects. The use of phenotypic tests, such as gelatinase activity, starch hydrolysis, catalase and oxidase tests, as well as molecular methods, such as polymerase chain reaction, are necessary for Pseudonocardia identification at the genus and species levels.
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Affiliation(s)
- Hanieh Sadat Riahi
- Department of Microbiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Parvin Heidarieh
- Department of Bacteriology and Virology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Mehdi Fatahi-Bafghi
- Department of Microbiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Mo P, Zhao Y, Liu J, Xu Z, Gao J. Pseudonocardia broussonetiae sp. nov., an endophytic actinomycete isolated from the roots of Broussonetia papyrifera. Int J Syst Evol Microbiol 2021; 71. [PMID: 33528351 DOI: 10.1099/ijsem.0.004680] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel endophytic actinomycete, designated strain Gen 01T, was isolated from the roots of Broussonetia papyrifera and characterized by using a polyphasic approach. The predominant cellular fatty acids were iso-C16 : 0, summed feature 3, iso H-C16 : 1, C16 : 0 and iso-C14 : 0. The polar lipid profile consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol mannosides, phospholipids of unknown structure containing glucosamine inositol, phosphatidylinositol and unidentified phospholipids. The major menaquinone was MK-8 (H4). The DNA G+C content of the genome sequence, consisting of 7 177 725 bp, was 74.5 mol%. Phylogenetic analysis of the full-length 16S rRNA gene sequences showed that strain Gen 01T belongs to the genus Pseudonocardia with the highest sequence similarity to Pseudonocardia petroleophila CGMCC 4.1532T (98.9 %) and lower than 98.7 % similarity to other species of the genus Pseudonocardia with validly published names. The average nucleotide identity and digital DNA-DNAhybridization values between strain Gen 01T and P. petroleophila CGMCC 4.1532T were 84.6 and 30.9 %, respectively. Furthermore, the morphological, physiological and biochemical characteristics were sufficient to categorize strain Gen 01T as being distinct from P. petroleophila CGMCC 4.1532T. Consequently, based on phenotypic and genotypic characteristics, strain Gen 01T represents a novel species of the genus Pseudonocardia, for which the name Pseudonocardia broussonetiae sp. nov. is proposed. The type strain is Gen 01T (=CICC 24820T=JCM 33840T).
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Affiliation(s)
- Ping Mo
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, Changsha 410004 Hunan, PR China
| | - Yunlin Zhao
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, Changsha 410004 Hunan, PR China
| | - Jun Liu
- College of Forestry, Northwest A & F University, Yangling 712100 Shaanxi, PR China
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, Changsha 410004 Hunan, PR China
| | - Zhenggang Xu
- College of Forestry, Northwest A & F University, Yangling 712100 Shaanxi, PR China
- Hunan Research Center of Engineering Technology for Utilization of Environmental and Resources Plant, Central South University of Forestry and Technology, Changsha 410004 Hunan, PR China
| | - Jian Gao
- School of Life Science, Hunan University of Science and Technology, Xiangtan 411201 Hunan, PR China
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Xu JX, Li ZY, Lv X, Yan H, Zhou GY, Cao LX, Yang Q, He YH. Isolation and characterization of Bacillus subtilis strain 1-L-29, an endophytic bacteria from Camellia oleifera with antimicrobial activity and efficient plant-root colonization. PLoS One 2020; 15:e0232096. [PMID: 32339210 PMCID: PMC7185607 DOI: 10.1371/journal.pone.0232096] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 04/07/2020] [Indexed: 11/19/2022] Open
Abstract
Endophytic bacteria, which are common in plant tissues, may help to control plant pathogens and enhance plant growth. Camellia oleifera, an oil-producing plant, is widely grown in warm, subtropical, hilly regions in China. However, C. oleifera is strongly negatively affected by C. oleifera anthracnose, which is caused by Colletetrichum fructicola. To find a suitable biocontrol agent for C. oleifera anthracnose, 41 endophytes were isolated from the stems, leaves, and roots of C. oleifera. Bacterial cultures were identified based on analyses of 16S rDNA sequences; most strains belonged to the genus Bacillus. The antagonistic effects of these strains on C. fructicola were tested in vitro. In total, 16 strains inhibited C. fructicola growth, with B. subtilis strain 1-L-29 being the most efficient. Strain 1-L-29 demonstrated antagonistic activity against C. siamense, C. asianum, Fusarium proliferatum, Agaricodochium camellia, and Pseudomonas syringae. In addition, this strain produced indole acetic acid, solubilized phosphate, grew on N-free media, and produced siderophores. To facilitate further microecological studies of this strain, a rifampicin-resistant, green fluorescent protein (GFP)-labeled strain, 1-L-29gfpr, was created using protoplast transformation. This plasmid had good segregational stability. Strain 1-L-29gfpr was re-introduced into C. oleifera and successfully colonized root, stem, and leaf tissues. This strain remained at a stable concentration in the root more than 20 d after inoculation. Fluorescence microscopic analysis showed that strain 1-L-29gfpr thoroughly colonized the root surfaces of C. fructicola as well as the root vascular tissues of Arabidopsis thaliana.
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Affiliation(s)
- Jin-Xin Xu
- College of Forestry, Central South University of Forestry and Technology, Changsha, China
| | - Zi-Yang Li
- College of Forestry, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory for Non-wood Forest Cultivation and Conservation of Ministry of Education, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
| | - Xing Lv
- College of Forestry, Central South University of Forestry and Technology, Changsha, China
| | - Hua Yan
- College of Forestry, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory for Non-wood Forest Cultivation and Conservation of Ministry of Education, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
| | - Guo-Ying Zhou
- College of Forestry, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory for Non-wood Forest Cultivation and Conservation of Ministry of Education, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
| | - Ling-Xue Cao
- College of Forestry, Central South University of Forestry and Technology, Changsha, China
| | - Qin Yang
- College of Forestry, Central South University of Forestry and Technology, Changsha, China
| | - Yuan-Hao He
- College of Forestry, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory for Non-wood Forest Cultivation and Conservation of Ministry of Education, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- * E-mail:
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Safdarian M, Askari H, Shariati J V, Nematzadeh G. Transcriptional responses of wheat roots inoculated with Arthrobacter nitroguajacolicus to salt stress. Sci Rep 2019; 9:1792. [PMID: 30741989 PMCID: PMC6370872 DOI: 10.1038/s41598-018-38398-2] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 12/21/2018] [Indexed: 11/09/2022] Open
Abstract
It is commonly accepted that bacteria actively interact with plant host and have beneficial effects on growth and adaptation and grant tolerance to various biotic and abiotic stresses. However, the mechanisms of plant growth promoting bacteria to communicate and adapt to the plant environment are not well characterized. Among the examined bacteria isolates from different saline soils, Arthrobacter nitroguajacolicus was selected as the best plant growth-promoting bacteria under salt stress. To study the effect of bacteria on wheat tolerance to salinity stress, bread wheat seeds were inoculated with A. nitroguajacolicus and grown under salt stress condition. Comparative transcriptome analysis of inoculated and un-inoculated wheat roots under salt stress showed up-regulation of 152 genes whereas 5 genes were significantly down-regulated. Many genes from phenylpropanoid, flavonoid and terpenoid porphyrin and chlorophyll metabolism, stilbenoid, diarylheptanoid metabolism pathways were differentially expressed within inoculated roots under salt stress. Also, a considerable number of genes encoding secondary metabolites such as phenylpropanoids was detected. They are known to take part in lignin biosynthesis of the cell wall as well as antioxidants.
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Affiliation(s)
- Maryam Safdarian
- Department of Plant Molecular Physiology, Genetics and Agricultural Biotechnology Institute of Tabarestan, Sari Agricultural Sciences and Natural Resources University, Sari, Mazandaran, Iran.,Genome Center, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Hossein Askari
- Department of plant sciences and biotechnology, Faculty of life Sciences and Biotechnology, Shahid.Beheshti University, G. C., Tehran, Iran.
| | - Vahid Shariati J
- Genome Center, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran.
| | - Ghorbanali Nematzadeh
- Department of Plant Molecular Physiology, Genetics and Agricultural Biotechnology Institute of Tabarestan, Sari Agricultural Sciences and Natural Resources University, Sari, Mazandaran, Iran
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Song J, Qiu S, Zhao J, Han C, Wang Y, Sun X, Jiang S, Wang X, Xiang W. Pseudonocardia tritici sp. nov., a novel actinomycete isolated from rhizosphere soil of wheat (Triticum aestivum L.). Antonie van Leeuwenhoek 2018; 112:765-773. [PMID: 30536164 DOI: 10.1007/s10482-018-01210-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 12/01/2018] [Indexed: 11/29/2022]
Abstract
An aerobic, non-motile, Gram-stain positive actinomycete, designated strain NEAU-YY211T, was isolated from the rhizosphere soil of wheat (Triticum aestivum L.) collected from Zhumadian, Henan Province, mid-eastern China, and characterised taxonomically using a polyphasic approach. Comparative analysis of the 16S rRNA gene sequence indicated that strain NEAU-YY211T belongs to the genus Pseudonocardia, showing high similarities with respect to Pseudonocardia ammonioxydans H9T (99.1%) and Pseudonocardia antitumoralis SCSIO 01299T (99.0%), respectively. The cell wall was found to contain meso-diaminopimelic acid and the whole cell sugars were identified as arabinose and galactose. The predominant menaquinone of strain NEAU-YY211T was identified as MK-8(H4) and the major fatty acids were identified as iso-C16:0, C17:1ω8c and iso-C16:1. The phospholipid profile was found to consist of diphosphatidylglycerol, phosphatidylmethylethanolamine, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, phosphatidylinositol and an unidentified phospholipid. The G+C content of the genomic DNA was determined to be 72.6 mol%. Levels of DNA-DNA relatedness with P. ammonioxydans JCM 12462T and P. antitumoralis DSM 45322T were 54.5 ± 3.5% and 49.8 ± 2.5% (mean ± SD), respectively. Based on phylogenetic analysis, phenotypic and genotypic data, it is concluded that the isolate can be distinguished from closely related type strains and thus represents a novel species of the genus Pseudonocardia, for which the name Pseudonocardia tritici sp. nov. is proposed. The type strain is NEAU-YY211T (= DSM 106068T = CGMCC 4.7474T).
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Affiliation(s)
- Jia Song
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, People's Republic of China
| | - Shiwen Qiu
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, People's Republic of China
| | - Junwei Zhao
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, People's Republic of China
| | - Chuanyu Han
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, People's Republic of China
| | - Ying Wang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, People's Republic of China
| | - Xiujun Sun
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, People's Republic of China
| | - Shanwen Jiang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, People's Republic of China
| | - Xiangjing Wang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, People's Republic of China.
| | - Wensheng Xiang
- Key Laboratory of Agricultural Microbiology of Heilongjiang Province, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, People's Republic of China. .,State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, People's Republic of China.
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Masand M, Jose PA, Menghani E, Jebakumar SRD. Continuing hunt for endophytic actinomycetes as a source of novel biologically active metabolites. World J Microbiol Biotechnol 2015; 31:1863-75. [PMID: 26410426 DOI: 10.1007/s11274-015-1950-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 09/15/2015] [Indexed: 10/23/2022]
Abstract
Drug-resistant pathogens and persistent agrochemicals mount the detrimental threats against human health and welfare. Exploitation of beneficial microorganisms and their metabolic inventions is most promising way to tackle these two problems. Since the successive discoveries of penicillin and streptomycin in 1940s, numerous biologically active metabolites have been discovered from different microorganisms, especially actinomycetes. In recent years, actinomycetes that inhabit unexplored environments have received significant attention due to their broad diversity and distinctive metabolic potential with medical, agricultural and industrial importance. In this scenario, endophytic actinomycetes that inhabit living tissues of plants are emerging as a potential source of novel bioactive compounds for the discovery of drug leads. Also, endophytic actinomycetes are considered as bio-inoculants to improve crop performance through organic farming practices. Further efforts on exploring the endophytic actinomycetes associated with the plants warrant the likelihood of discovering new taxa and their metabolites with novel chemical structures and biotechnological importance. This mini-review highlights the recent achievements in isolation of endophytic actinomycetes and an assortment of bioactive compounds.
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Affiliation(s)
- Meeta Masand
- School of Life sciences, Suresh Gyan Vihar University, Jaipur, India
| | - Polpass Arul Jose
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai, India. .,Department of Agricultural Microbiology, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai, India.
| | - Ekta Menghani
- Department of Biotechnology, School of Science, JECRC University, Jaipur, India
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Tanvir R, Sajid I, Hasnain S. Biotechnological potential of endophytic actinomycetes associated with Asteraceae plants: isolation, biodiversity and bioactivities. Biotechnol Lett 2013; 36:767-73. [DOI: 10.1007/s10529-013-1430-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 11/22/2013] [Indexed: 11/30/2022]
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Zhang DF, Jiang Z, Li L, Liu BB, Zhang XM, Tian XP, Zhang S, Li WJ. Pseudonocardia sediminis sp. nov., isolated from marine sediment. Int J Syst Evol Microbiol 2013; 64:745-750. [PMID: 24198055 DOI: 10.1099/ijs.0.057844-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-positive, aerobic actinomycete, designated strain YIM M13141(T), was isolated from a marine sediment sample from the South China Sea, and its taxonomic position was determined using a polyphasic approach. The strain produced branched substrate mycelium and aerial hyphae, but no diffusible pigments were produced on the media tested. At maturity, substrate mycelium was fragmented and spore chains were formed on aerial hyphae and substrate mycelium. Optimum growth occurred at 28 °C, 1-3% (w/v) NaCl and pH 7.0. Comparative analysis of the 16S rRNA gene sequence showed that the isolate belongs to the genus Pseudonocardia, showing highest levels of similarity with respect to Pseudonocardia sichuanensis KLBMP 1115(T) (97.1%), Pseudonocardia tetrahydrofuranoxydans K1(T) (97.1%) and Pseudonocardia kunmingensis YIM 63158(T) (97.0%). Whole-organism hydrolysates of the strain contained meso-diaminopimelic acid and the sugars galactose, glucose, mannose and arabinose. The predominant menaquinone was MK-8(H4). The polar lipids detected were diphosphatidylglycerol, phosphatidylcholine, phosphatidylinositol, phosphatidylmethylethanolamine, phosphatidylethanolamine, two unknown phosphoglycolipids and two glycolipids. The major fatty acid was iso-C16 : 0. The G+C content of the genomic DNA was 73.1 mol%. DNA-DNA relatedness with P. tetrahydrofuranoxydans DSM 44239(T) was 42.8 ± 3.5% (mean±sd). Based on phylogenetic analysis, phenotypic and genotypic data, it is concluded that the isolate represents a novel species of the genus Pseudonocardia, for which the name Pseudonocardia sediminis sp. nov. is proposed. The type strain is YIM M13141(T) ( = DSM 45779(T) = JCM 18540(T)).
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Affiliation(s)
- Dao-Feng Zhang
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China.,Key Laboratory of Biogeography and Bioresource in Arid Land, CAS, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China
| | - Zhao Jiang
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
| | - Li Li
- Key Laboratory of Biogeography and Bioresource in Arid Land, CAS, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China
| | - Bing-Bing Liu
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
| | - Xiao-Mei Zhang
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
| | - Xin-Peng Tian
- Key Laboratory of Tropical Marine Bio-resources and Ecology, CAS; RNAM Center for Marine Microbiology, CAS; Guangdong Key Laboratory of Marine Materia Medica; South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China
| | - Si Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, CAS; RNAM Center for Marine Microbiology, CAS; Guangdong Key Laboratory of Marine Materia Medica; South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China
| | - Wen-Jun Li
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China.,Key Laboratory of Biogeography and Bioresource in Arid Land, CAS, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China
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Madhaiyan M, Peng N, Te NS, Hsin I C, Lin C, Lin F, Reddy C, Yan H, Ji L. Improvement of plant growth and seed yield in Jatropha curcas by a novel nitrogen-fixing root associated Enterobacter species. BIOTECHNOLOGY FOR BIOFUELS 2013; 6:140. [PMID: 24083555 PMCID: PMC3879406 DOI: 10.1186/1754-6834-6-140] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 09/26/2013] [Indexed: 05/13/2023]
Abstract
BACKGROUND Jatropha curcas L. is an oil seed producing non-leguminous tropical shrub that has good potential to be a fuel plant that can be cultivated on marginal land. Due to the low nutrient content of the targeted plantation area, the requirement for fertilizer is expected to be higher than other plants. This factor severely affects the commercial viability of J. curcas. RESULTS We explored the feasibility to use endophytic nitrogen-fixing bacteria that are native to J. curcas to improve plant growth, biomass and seed productivity. We demonstrated that a novel N-fixing endophyte, Enterobacter sp. R4-368, was able to colonize in root and stem tissues and significantly promoted early plant growth and seed productivity of J. curcas in sterilized and non-sterilized soil. Inoculation of young seedling led to an approximately 57.2% increase in seedling vigour over a six week period. At 90 days after planting, inoculated plants showed an average increase of 25.3%, 77.7%, 27.5%, 45.8% in plant height, leaf number, chlorophyll content and stem volume, respectively. Notably, inoculation of the strain led to a 49.0% increase in the average seed number per plant and 20% increase in the average single seed weight when plants were maintained for 1.5 years in non-sterilized soil in pots in the open air. Enterobacter sp. R4-368 cells were able to colonize root tissues and moved systemically to stem tissues. However, no bacteria were found in leaves. Promotion of plant growth and leaf nitrogen content by the strain was partially lost in nifH, nifD, nifK knockout mutants, suggesting the presence of other growth promoting factors that are associated with this bacterium strain. CONCLUSION Our results showed that Enterobacter sp. R4-368 significantly promoted growth and seed yield of J. curcas. The application of the strains is likely to significantly improve the commercial viability of J. curcas due to the reduced fertilizer cost and improved oil yield.
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Affiliation(s)
- Munusamy Madhaiyan
- Biomaterials and Biocatalysts Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Republic of Singapore
| | - Ni Peng
- Biomaterials and Biocatalysts Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Republic of Singapore
| | - Ngoh Si Te
- Biomaterials and Biocatalysts Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Republic of Singapore
| | - Cheng Hsin I
- Biomaterials and Biocatalysts Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Republic of Singapore
| | - Cai Lin
- Biomaterials and Biocatalysts Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Republic of Singapore
| | - Fu Lin
- Biomaterials and Biocatalysts Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Republic of Singapore
| | - Chalapathy Reddy
- Joil Pte Ltd, 1 Research Link National University of Singapore, Singapore 117604, Republic of Singapore
| | - Hong Yan
- Joil Pte Ltd, 1 Research Link National University of Singapore, Singapore 117604, Republic of Singapore
| | - Lianghui Ji
- Biomaterials and Biocatalysts Group, Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore 117604, Republic of Singapore
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List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2012. [DOI: 10.1099/ijs.0.046342-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The purpose of this announcement is to effect the valid publication of the following effectively published new names and new combinations under the procedure described in the Bacteriological Code (1990 Revision). Authors and other individuals wishing to have new names and/or combinations included in future lists should send three copies of the pertinent reprint or photocopies thereof, or an electronic copy of the published paper, to the IJSEM Editorial Office for confirmation that all of the other requirements for valid publication have been met. It is also a requirement of IJSEM and the ICSP that authors of new species, new subspecies and new combinations provide evidence that types are deposited in two recognized culture collections in two different countries. It should be noted that the date of valid publication of these new names and combinations is the date of publication of this list, not the date of the original publication of the names and combinations. The authors of the new names and combinations are as given below, and these authors’ names will be included in the author index of the present issue. Inclusion of a name on these lists validates the publication of the name and thereby makes it available in bacteriological nomenclature. The inclusion of a name on this list is not to be construed as taxonomic acceptance of the taxon to which the name is applied. Indeed, some of these names may, in time, be shown to be synonyms, or the organisms may be transferred to another genus, thus necessitating the creation of a new combination.
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11
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Cuesta G, Soler A, Alonso JL, Ruvira MA, Lucena T, Arahal DR, Goodfellow M. Pseudonocardia hispaniensis sp. nov., a novel actinomycete isolated from industrial wastewater activated sludge. Antonie van Leeuwenhoek 2012; 103:135-42. [PMID: 22899021 DOI: 10.1007/s10482-012-9792-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Accepted: 08/06/2012] [Indexed: 10/28/2022]
Abstract
A novel actinomycete, designated PA3(T), was isolated from an oil refinery wastewater treatment plant, located in Palos de la Frontera, Huelva, Spain, and characterized taxonomically by using a polyphasic approach. Phylogenetic analysis based on 16S rRNA gene sequences showed that the isolate formed a distinct subclade in the Pseudonocardia tree together with Pseudonocardia asaccharolytica DSM 44247(T). The chemotaxonomic properties of the isolate, for example, the presence of MK-8 (H(4)) as the predominant menaquinone and iso-C(16:0) as the major fatty acid, are consistent with its classification in the genus Pseudonocardia. DNA:DNA pairing experiments between the isolate and the type strain of P. asaccharolytica DSM 44247(T) showed that they belonged to separate genomic species. The two strains were readily distinguished using a combination of phenotypic properties. Consequently, it is proposed that isolate PA3(T) represents a novel species for which the name Pseudonocardia hispaniensis sp. nov. is proposed. The type strain is PA3(T) (= CCM 8391(T) = CECT 8030(T)).
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Affiliation(s)
- G Cuesta
- Área de Microbiología, Departamento de Biotecnología, E.T.S.I. Agronómica y Medio Natural, Universitat Politècnica de València, Camino de Vera 14, 46022, Valencia, Spain.
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Xing K, Qin S, Bian GK, Zhang YJ, Zhang WD, Dai CC, Liu CH, Li WJ, Jiang JH. Pseudonocardia nantongensis sp. nov., a novel endophytic actinomycete isolated from the coastal halophyte Tamarix chinensis Lour. Antonie van Leeuwenhoek 2012; 102:659-67. [DOI: 10.1007/s10482-012-9764-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 06/13/2012] [Indexed: 11/30/2022]
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Nie GX, Ming H, Wei DQ, Zhou EM, Tang X, Cheng J, Tang SK, Li WJ. Pseudonocardia yuanmoensis sp. nov., a novel actinobacterium isolated from soil in Yunnan, south-west China. Antonie van Leeuwenhoek 2011; 101:753-60. [DOI: 10.1007/s10482-011-9689-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2011] [Accepted: 12/13/2011] [Indexed: 10/14/2022]
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Pseudonocardia serianimatus sp. nov., a novel actinomycete isolated from the surface-sterilized leaves of Artemisia annua L. Antonie van Leeuwenhoek 2011; 100:521-8. [DOI: 10.1007/s10482-011-9607-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Accepted: 06/06/2011] [Indexed: 11/26/2022]
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Pseudonocardia bannaensis sp. nov., a novel actinomycete isolated from the surface-sterilized roots of Artemisia annua L. Antonie van Leeuwenhoek 2011; 100:35-42. [DOI: 10.1007/s10482-011-9562-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 02/04/2011] [Indexed: 10/18/2022]
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Zhao GZ, Li J, Huang HY, Zhu WY, Park DJ, Kim CJ, Xu LH, Li WJ. Pseudonocardia kunmingensis sp. nov., an actinobacterium isolated from surface-sterilized roots of Artemisia annua L. Int J Syst Evol Microbiol 2010; 61:2292-2297. [PMID: 20971834 DOI: 10.1099/ijs.0.027607-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-positive, aerobic, actinobacterial strain with rod-shaped spores, designated YIM 63158(T), was isolated from the surface-sterilized roots of Artemisia annua L. collected from Yunnan province, south-west China. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YIM 63158(T) belonged to the genus Pseudonocardia. The closest neighbours were 'Pseudonocardia sichuanensis' KLBMP 1115 (99.9 % 16S rRNA gene sequence similarity), Pseudonocardia adelaidensis EUM 221(T) (99.1 %) and Pseudonocardia zijingensis DSM 44774(T) (98.8 %); sequence similarities to other members of the genus Pseudonocardia ranged from 98.6 to 94.4 %. The chemotaxonomic characteristics, such as the cell-wall diaminopimelic acid, whole-cell sugars, fatty acid components and major menaquinones, suggested that the isolate belonged to the genus Pseudonocardia. The G+C content of the genomic DNA was 73.3 mol%. On the basis of physiological, biochemical and chemotaxonomic data, including low DNA-DNA relatedness between the isolate and other members of the genus Pseudonocardia, it is proposed that strain YIM 63158(T) represents a novel species in this genus, with the name Pseudonocardia kunmingensis sp. nov. The type strain is YIM 63158(T) ( = DSM 45301(T) = CCTCC AA 208078(T)). [corrected].
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Affiliation(s)
- Guo-Zhen Zhao
- The Key Laboratory for Microbial Resources of the Ministry of Education, PR China and Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
| | - Jie Li
- Key Laboratory of Marine Bio-resources Sustainable Utilization/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, PR China.,The Key Laboratory for Microbial Resources of the Ministry of Education, PR China and Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
| | - Hai-Yu Huang
- The Key Laboratory for Microbial Resources of the Ministry of Education, PR China and Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
| | - Wen-Yong Zhu
- The Key Laboratory for Microbial Resources of the Ministry of Education, PR China and Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
| | - Dong-Jin Park
- Korea Research Institutes of Biosciences and Biotechnology 52, Eoeun-dong, Yuseong gu, Daejeon, 305-333, Republic of Korea
| | - Chang-Jin Kim
- Korea Research Institutes of Biosciences and Biotechnology 52, Eoeun-dong, Yuseong gu, Daejeon, 305-333, Republic of Korea
| | - Li-Hua Xu
- The Key Laboratory for Microbial Resources of the Ministry of Education, PR China and Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
| | - Wen-Jun Li
- Key Laboratory of Marine Bio-resources Sustainable Utilization/Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, PR China.,The Key Laboratory for Microbial Resources of the Ministry of Education, PR China and Laboratory for Conservation and Utilization of Bio-resources, Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
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Biodiversity, bioactive natural products and biotechnological potential of plant-associated endophytic actinobacteria. Appl Microbiol Biotechnol 2010; 89:457-73. [DOI: 10.1007/s00253-010-2923-6] [Citation(s) in RCA: 197] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 09/24/2010] [Accepted: 09/26/2010] [Indexed: 01/23/2023]
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