1
|
Basbuga S, Basbuga S, Can C, Yayla F. Phenotypic and genotypic diversity of root nodule bacteria from wild Lathyrus and Vicia species in Gaziantep, Turkey. Folia Microbiol (Praha) 2024; 69:1145-1157. [PMID: 38526677 DOI: 10.1007/s12223-024-01156-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 03/08/2024] [Indexed: 03/27/2024]
Abstract
This study identified the phenotypic and genotypic characteristics of the bacteria that nodulate wild Lathyrus and Vicia species natural distribution in the Gaziantep province of Turkey. Principle component analysis of phenotypic features revealed that rhizobial isolates were highly resistant to stress factors such as high salt, pH and temperature. They were found to be highly sensitive to the concentrations (mg/mL) of the antibiotics neomycin 10, kanamycin, and tetracycline 5, as well as the heavy metals Ni 10, and Cu 10, and 5. As a result of REP-PCR analysis, it was determined that the rhizobial isolates were quite diverse, and 5 main groups and many subgroups being found. All of the isolates nodulating wild Vicia species were found to be related to Rhizobium sp., and these isolates were found to be in Clades II, III, IV, and V of the phylogenetic tree based on 16S rRNA. The isolates that nodulated wild Lathyrus species were in Clades I, II, IV, V, VI, VII, and VIII, and they were closely related to Rhizobium leguminasorum, Rhizobium sp., Phyllobacterium sp., Serratia sp., and Pseudomonas sp. According to the genetic analyses, the isolates could not be classified at the species level, the similarity ratio was low, they formed a distinct group that was supported by strong bootstrap values in the phylogenetic tree, and the differences discovered in the network analysis revealed the diversity among the isolates and gave important findings that these isolates may be new species.
Collapse
Affiliation(s)
- Sevil Basbuga
- Biology Department, Science and Letter Faculty, Gaziantep University, Gaziantep, Turkey.
| | - Selcuk Basbuga
- Biology Department, Science and Letter Faculty, Gaziantep University, Gaziantep, Turkey
| | - Canan Can
- Biology Department, Science and Letter Faculty, Gaziantep University, Gaziantep, Turkey
| | - Fatih Yayla
- Biology Department, Science and Letter Faculty, Gaziantep University, Gaziantep, Turkey
| |
Collapse
|
2
|
Ayangbenro AS, Adem MR, Babalola OO. Bambara Nut Root-Nodules Bacteria from a Semi-Arid Region of South Africa and Their Plant Growth-Promoting Traits. Int J Microbiol 2023; 2023:8218721. [PMID: 37426699 PMCID: PMC10328734 DOI: 10.1155/2023/8218721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/19/2023] [Accepted: 06/26/2023] [Indexed: 07/11/2023] Open
Abstract
Rhizobial nitrogen-fixing bacteria are the main inhabitants of the root nodules of legume plants. Studying the bacterial community of legume nodules is important in understanding plant growth and nutrient requirements. Culture-based technique was used to examine the bacterial community of these underground organs from Vigna subterranea L. Verdc (Bambara nut), an underutilized legume in Africa, for plant growth-promoting traits. In this study, Bambara nuts were planted to trap root-nodule bacteria, and the bacteria were morphologically, biochemically, and molecularly characterized. Five selected isolates were screened in vitro for their plant growth-promoting traits and exhibited differences in their phenotypic traits. The polymerase chain reaction (PCR) products were subjected to partial 16S rRNA gene sequencing for phylogenetic analysis. Based on 16S rRNA gene sequence, the isolates were identified as BA1 (Stenotrophomonas maltophilia), BA2 (Chryseobacterium sp.), BA3 (Pseudomonas alcaligenes), BA4 (Pseudomonas plecoglossicida), and BA5 (Pseudomonas hibiscicola). Results showed that four of the five isolates could produce IAA. The capability to solubilize phosphate in Pikovskaya's agar plates was positively shown by four isolates (BA2, BA3, BA4, and BA5). Three isolates could produce hydrogen cyanide while isolates BA1, BA3, BA4, and BA5 were found to have ammonia-production traits. The results suggest that these plant growth-promoting isolates can be used as inoculants for plant growth and productivity.
Collapse
Affiliation(s)
- Ayansina Segun Ayangbenro
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| | - Mohomud Rashid Adem
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| | - Olubukola Oluranti Babalola
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho 2735, South Africa
| |
Collapse
|
3
|
Tshikhudo PP, Ntushelo K, Mudau FN. Sustainable Applications of Endophytic Bacteria and Their Physiological/Biochemical Roles on Medicinal and Herbal Plants: Review. Microorganisms 2023; 11:microorganisms11020453. [PMID: 36838418 PMCID: PMC9967847 DOI: 10.3390/microorganisms11020453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/02/2023] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
Bacterial endophytes reside within the tissues of living plant species without causing any harm or disease to their hosts. These endophytes can be isolated, identified, characterized, and used as biofertilizers. Moreover, bacterial endophytes increase the plants' resistance against diseases, pests, and parasites, and are a promising source of pharmaceutically important bioactives. For instance, the production of antibiotics, auxins, biosurfactants, cytokinin's, ethylene, enzymes, gibberellins, nitric oxide organic acids, osmolytes, and siderophores is accredited to the existence of various bacterial strains. Thus, this manuscript intends to review the sustainable applications of endophytic bacteria to promote the growth, development, and chemical integrity of medicinal and herbal plants, as well as their role in plant physiology. The study of the importance of bacterial endophytes in the suppression of diseases in medicinal and herbal plants is crucial and a promising area of future investigation.
Collapse
Affiliation(s)
- Phumudzo Patrick Tshikhudo
- Department of Agriculture, Land Reform and Rural Development, Directorate Plant Health, Division Pest Risk Analysis, Arcadia, Pretoria 0001, South Africa
- Correspondence:
| | - Khayalethu Ntushelo
- Department of Agriculture and Animal Health, College of Agriculture and Environmental Sciences, University of South Africa, Private Bag X6, Florida 1710, South Africa
| | - Fhatuwani Nixwell Mudau
- School of Agricultural, Earth and Environmental Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg 3209, South Africa
| |
Collapse
|
4
|
Tang M, Wang H, Qi X, He T, Zhang B, Wang E, Yu M, Wang B, Wang F, Liu Z, Liu X. Diversification of Sinorhizobium populations associated with Medicago polymorpha and Medicago lupulina in purple soil of China. Front Microbiol 2023; 13:1055694. [PMID: 36687603 PMCID: PMC9846747 DOI: 10.3389/fmicb.2022.1055694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/29/2022] [Indexed: 01/06/2023] Open
Abstract
The double selection of environment adaptation and host specificity forced the diversification of rhizobia in nature. In the tropical region of China, Medicago polymorpha and Medicago lupulina are widely distributed, particularly in purple soil. However, the local distribution and diversity of rhizobia associated with these legumes has not been systematically investigated. To this end, root nodules of M. polymorpha and M. lupulina grown in purple soil at seven locations in Yunnan Province of China were collected for rhizobial isolation. The obtained rhizobia were characterized by RFLP of 16S-23S rRNA intergenic spacer, BOXAIR fingerprinting, and phylogeny of housekeeping and symbiosis genes. As result, a total of 91 rhizobial strains were classified into species Sinorhizobium medicae and S. meliloti, while three nodC gene types were identified among them. S. medicae containing nodC of type I was dominant in farmlands associated with M. polymorpha; while S. meliloti harboring nodC of type III was dominant in wild land nodulated by M. lupulina. For both rhizobial species, greater genetic diversity was detected in the populations isolated from their preferred host plant. A high level of genetic differentiation was observed between the two Sinorhizobium species, and gene flow was evident within the populations of the same species derived from different soil types, indicating that rhizobial evolution is likely associated with the soil features. To examine the effects of environmental features on rhizobial distribution, soil physicochemical traits and rhizobial genotypes were applied for constrained analysis of principle coordinates, which demonstrated that soil features like pH, nitrogen and sodium were the principle factors governing the rhizobial geographical distribution. Altogether, both S. medicae and S. meliloti strains could naturally nodulate with M. polymorpha and M. lupulina, but the rhizobium-legume symbiosis compatibility determined by both the host species and soil factors was also highlighted.
Collapse
Affiliation(s)
- Mingxing Tang
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, College of Life Science, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding City, China
| | - Haoyu Wang
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, College of Life Science, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding City, China
| | - Xin Qi
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, College of Life Science, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding City, China
| | - Teng He
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, College of Life Science, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding City, China
| | - Bin Zhang
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, College of Life Science, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding City, China
| | - Entao Wang
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politecnico Nacional, Mexico City, Mexico
| | - Miao Yu
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, College of Life Science, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding City, China
| | - Beinan Wang
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, College of Life Science, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding City, China
| | - Fang Wang
- Key Laboratory of State Forestry Administration for Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming City, China
| | - Zhongkuan Liu
- Institute of Agricultural Resources and Environment, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, China,*Correspondence: Zhongkuan Liu, ; Xiaoyun Liu,
| | - Xiaoyun Liu
- Key Laboratory of Microbial Diversity Research and Application of Hebei Province, College of Life Science, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding City, China,*Correspondence: Zhongkuan Liu, ; Xiaoyun Liu,
| |
Collapse
|
5
|
Energy Availability Factors Drive the Geographical Pattern of Tenebrionidae (Coleoptera) in the Arid and Semiarid Areas of China. DIVERSITY 2022. [DOI: 10.3390/d15010018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Species richness is regarded as the core index of biogeography. Estimating the correlation between species richness and modern environmental factors will be of great significance for species conservation. The arid and semiarid areas of China present serious desertification, but there are rich biodiversity resources of high value. In this study, we evaluated species diversity, species richness, and the correlation between species richness and modern environmental factors using the species of Tenebrionidae in arid and semiarid areas of China, which will provide basic data for species conservation. The species richness was measured using 1° × 1° grid cells, and its determinants were explored based on generalized linear models (GLMs) and random forest models. A total of 696 species, belonging to 125 genera of 38 tribes and 7 subfamilies, were recorded in the study area. The non-uniform species richness pattern was presented, with more species in Altai, Tianshan, Nyenchen Thanglha and Helan Mountains. The species richness was affected by a variety of environmental factors. The variables representing energy availability and climate stability had stronger explanatory power, especially the annual mean temperature (BIO1) and the mean temperature of warmest quarter (BIO10). In contrast, water availability and habitat heterogeneity have relatively little correlation with species richness.
Collapse
|
6
|
So many rhizobial partners, so little nitrogen fixed: The intriguing symbiotic promiscuity of common bean (Phaseolus vulgaris L.). Symbiosis 2022. [DOI: 10.1007/s13199-022-00831-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
7
|
Etesami H. Root nodules of legumes: A suitable ecological niche for isolating non-rhizobial bacteria with biotechnological potential in agriculture. CURRENT RESEARCH IN BIOTECHNOLOGY 2022. [DOI: 10.1016/j.crbiot.2022.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
|
8
|
Maquia ISA, Fareleira P, Videira e. Castro I, Soares R, Brito DRA, Mbanze AA, Chaúque A, Máguas C, Ezeokoli OT, Ribeiro NS, Marques I, Ribeiro-Barros AI. The Nexus between Fire and Soil Bacterial Diversity in the African Miombo Woodlands of Niassa Special Reserve, Mozambique. Microorganisms 2021; 9:microorganisms9081562. [PMID: 34442641 PMCID: PMC8400031 DOI: 10.3390/microorganisms9081562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/15/2021] [Accepted: 07/19/2021] [Indexed: 12/14/2022] Open
Abstract
(1) Background: the Miombo woodlands comprise the most important vegetation from southern Africa and are dominated by tree legumes with an ecology highly driven by fires. Here, we report on the characterization of bacterial communities from the rhizosphere of Brachystegia boehmii in different soil types from areas subjected to different regimes. (2) Methods: bacterial communities were identified through Illumina MiSeq sequencing (16S rRNA). Vigna unguiculata was used as a trap to capture nitrogen-fixing bacteria and culture-dependent methods in selective media were used to isolate plant growth promoting bacteria (PGPB). PGP traits were analysed and molecular taxonomy of the purified isolates was performed. (3) Results: Bacterial communities in the Miombo rhizosphere are highly diverse and driven by soil type and fire regime. Independent of the soil or fire regime, the functional diversity was high, and the different consortia maintained the general functions. A diverse pool of diazotrophs was isolated, and included symbiotic (e.g., Mesorhizobium sp., Neorhizobium galegae, Rhizobium sp., and Ensifer adhaerens), and non-symbiotic (e.g., Agrobacterium sp., Burkholderia sp., Cohnella sp., Microvirga sp., Pseudomonas sp., and Stenotrophomonas sp.) bacteria. Several isolates presented cumulative PGP traits. (4) Conclusions: Although the dynamics of bacterial communities from the Miombo rhizosphere is driven by fire, the maintenance of high levels of diversity and functions remain unchanged, constituting a source of promising bacteria in terms of plant-beneficial activities such as mobilization and acquisition of nutrients, mitigation of abiotic stress, and modulation of plant hormone levels.
Collapse
Affiliation(s)
- Ivete Sandra Alberto Maquia
- Forest Research Center, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal;
- TropiKMan Doctoral Program, NOVA SBE, 2775-405 Carcavelos, Portugal
- Biotechnology Center, Eduardo Mondlane University, Maputo 3453, Mozambique;
| | - Paula Fareleira
- National Institute of Agricultural and Veterinary Research, I.P. (INIAV, I.P), 2780-157 Oeiras, Portugal; (P.F.); (I.V.e.C.); (R.S.)
| | - Isabel Videira e. Castro
- National Institute of Agricultural and Veterinary Research, I.P. (INIAV, I.P), 2780-157 Oeiras, Portugal; (P.F.); (I.V.e.C.); (R.S.)
| | - Ricardo Soares
- National Institute of Agricultural and Veterinary Research, I.P. (INIAV, I.P), 2780-157 Oeiras, Portugal; (P.F.); (I.V.e.C.); (R.S.)
| | - Denise R. A. Brito
- Biotechnology Center, Eduardo Mondlane University, Maputo 3453, Mozambique;
| | | | - Aniceto Chaúque
- Faculty of Agronomy and Forest Engineering, Eduardo Mondlane University, Maputo 3453, Mozambique; (A.C.); (N.S.R.)
| | - Cristina Máguas
- Centre for Ecology, Evolution and Environmental Changes (cE3c), Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal;
| | - Obinna T. Ezeokoli
- Department of Microbiology and Biochemistry, University of the Free State, Bloemfontein 9300, South Africa;
| | - Natasha Sofia Ribeiro
- Faculty of Agronomy and Forest Engineering, Eduardo Mondlane University, Maputo 3453, Mozambique; (A.C.); (N.S.R.)
| | - Isabel Marques
- Forest Research Center, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal;
- Correspondence: (I.M.); (A.I.R.-B.)
| | - Ana I. Ribeiro-Barros
- Forest Research Center, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal;
- Correspondence: (I.M.); (A.I.R.-B.)
| |
Collapse
|
9
|
Efstathiadou E, Savvas D, Tampakaki AP. Genetic diversity and phylogeny of indigenous rhizobia nodulating faba bean (Vicia faba L.) in Greece. Syst Appl Microbiol 2020; 43:126149. [PMID: 33161357 DOI: 10.1016/j.syapm.2020.126149] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 08/19/2020] [Accepted: 09/19/2020] [Indexed: 12/16/2022]
Abstract
The genetic diversity and phylogeny of fast-growing rhizobia isolated from root nodules of Vicia faba grown in different geographical regions of Greece were assessed. Although Rhizobium leguminosarum sv. viciae is the most common symbiont of Vicia spp. in European soils, there is no available information on native rhizobia nodulating faba bean in Greece. Seventy bacterial strains were isolated and grouped into sixteen distinct profiles based on BOX-PCR fingerprinting. The phylogenetic affiliation was further defined by sequence analysis of the rrs and multilocus sequence analysis (MLSA) of three housekeeping genes (recA, atpD and gyrB). Fifty-eight isolates were affiliated with recently described genospecies gsF-2, represented by R. laguerreae FB206T, whereas six isolates were closely related to gsB and two isolates might belong to gsA. Two isolates assigned to R. hidalgonense and another two non-nodulating strains could not be assigned to any validly defined species and possibly belong to a new rhizobial lineage. Interestingly, R. laguerreae strains were commonly found at all sampling sites, suggesting that they could be the main symbionts of faba beans in Greek soils. According to the phylogenies of two symbiosis-related genes (nodC and nifH), all nodulating isolates belonged to symbiovar (sv.) viciae harboring four distinct nodC gene haplotypes and they were grouped into two clades together with strains assigned to R. laguerreae and genospecies of R. leguminosarum isolated from other countries and continents. This is the first report that R. hidalgonense strains belong to sv. viciae. No correlation was observed between the nodC haplotypes, geographic origin and chromosomal background of the isolates in the study.
Collapse
Affiliation(s)
- Evdoxia Efstathiadou
- Laboratory of General and Agricultural Microbiology, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, Votanikos, 11855 Athens, Greece
| | - Dimitrios Savvas
- Laboratory of Vegetable Production, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, Votanikos, 11855 Athens, Greece
| | - Anastasia P Tampakaki
- Laboratory of General and Agricultural Microbiology, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, Votanikos, 11855 Athens, Greece.
| |
Collapse
|
10
|
Bañuelos-Vazquez LA, Cazares D, Rodríguez S, Cervantes-De la Luz L, Sánchez-López R, Castellani LG, Tejerizo GT, Brom S. Transfer of the Symbiotic Plasmid of Rhizobium etli CFN42 to Endophytic Bacteria Inside Nodules. Front Microbiol 2020; 11:1752. [PMID: 32849381 PMCID: PMC7403402 DOI: 10.3389/fmicb.2020.01752] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 07/06/2020] [Indexed: 12/27/2022] Open
Abstract
Conjugative transfer is one of the mechanisms allowing diversification and evolution of bacteria. Rhizobium etli CFN42 is a bacterial strain whose habitat is the rhizosphere and is able to form nodules as a result of the nitrogen-fixing symbiotic relationship it may establish with the roots of Phaseolus vulgaris. R. etli CFN42 contains one chromosome and six large plasmids (pRet42a - pRet42f). Most of the genetic information involved in the establishment of the symbiosis is localized on plasmid pRet42d, named as the symbiotic plasmid (pSym). This plasmid is able to perform conjugation, using pSym encoded transfer genes controlled by the RctA/RctB system. Another plasmid of CFN42, pRet42a, has been shown to perform conjugative transfer not only in vitro, but also on the surface of roots and inside nodules, using other rhizobia as recipients. In addition to the rhizobia involved in the formation of nodules, these structures have been shown to contain endophytic bacteria from different genera and species. In this work, we have explored the conjugative transfer of the pSym (pRet42d) from R. etli CFN42 to endophytic bacteria as putative recipients, using as donor a CFN42 derivative labeled with GFP in the pRet42d and RFP in the chromosome. We were able to isolate some transconjugants, which inherit the GFP, but not the RFP marker. Some of them were identified, analyzed and evaluated for their ability to nodulate. We found transconjugants from genera such as Stenotrophomonas, Achromobacter, and Bacillus, among others. Although all the transconjugants carried the GFP marker, and nod, fix, and nif genes from pRet42d, not all were able to nodulate. Ultrastructure microscopy analysis showed some differences in the structure of the nodules of one of the transconjugants. A replicon of the size of pRet42d (371 Kb) could not be visualized in the transconjugants, suggesting that the pSym or a segment of the plasmid is integrated in the chromosome of the recipients. These findings strengthen the proposal that nodules constitute a propitious environment for exchange of genetic information among bacteria, in addition to their function as structures where nitrogen fixation and assimilation takes place.
Collapse
Affiliation(s)
- Luis Alfredo Bañuelos-Vazquez
- Programa de Ingeniería Genómica, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Daniel Cazares
- Programa de Ingeniería Genómica, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Susana Rodríguez
- Programa de Biología de Sistemas y Biología Sintética, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Laura Cervantes-De la Luz
- Programa de Ingeniería Genómica, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Rosana Sánchez-López
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Lucas G. Castellani
- Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular (IBBM) – CCT-CONICET-La Plata, Universidad Nacional de La Plata, La Plata, Argentina
| | - Gonzalo Torres Tejerizo
- Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Instituto de Biotecnología y Biología Molecular (IBBM) – CCT-CONICET-La Plata, Universidad Nacional de La Plata, La Plata, Argentina
| | - Susana Brom
- Programa de Ingeniería Genómica, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| |
Collapse
|
11
|
Zhu M, Yang S, Ai S, Ai X, Jiang X, Chen J, Li R, Ai Y. Artificial soil nutrient, aggregate stability and soil quality index of restored cut slopes along altitude gradient in southwest China. CHEMOSPHERE 2020; 246:125687. [PMID: 31918080 DOI: 10.1016/j.chemosphere.2019.125687] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 12/12/2019] [Accepted: 12/16/2019] [Indexed: 06/10/2023]
Abstract
In the subalpine mountainous region of southwest China, the artificial soil properties of restored cut slopes along the altitude gradient were studied, including available nitrogen (AN), available phosphorus (AP), available potassium (AK), urease (UR), sucrase (SC), protease (PR), catalase (CAT), texture, and aggregate stability of soil. Soil aggregatet stability by mean weight diameter (MWD), geometric mean diameter (GMD), structure failure rate (P), index of unstable aggregates (IUA) and area difference of dry and wet sieve cumulative distribution curve (ΔS) were measured and analyzed. It was found that available soil nutrients, UR, and CAT activities increased initially and then decreased, but the texture of soil was finer, and aggregate structure tended to be more stable along with an increase in the altitude gradient. The soil aggregate stability index that MWD, GMD, P, IUA, and ΔS indicated that the higher the altitude, the stability of soil aggregates was better. Principal component analysis (PCA) was used to determine the soil quality index (SQI). The obtained results from this study showed that the artificial soil quality of the cut slopes was better at a higher altitude compared to a lower altitude. These results provide a reference for the improvement of artificial soil properties of cut slopes and their quality in the future. It is necessary to pay attention to the soil quality management at a low-altitude area and reform the soil nutrients, enzyme activities, and soil structure for the restored cut slopes in the mountainous subalpine highway of southwest China.
Collapse
Affiliation(s)
- Mengke Zhu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, PR China; Yangtze River Rare Plant Research Institute, China Three Gorges Corporation, PR China
| | - Siqian Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, PR China
| | - Shenghao Ai
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan, 610066, PR China
| | - Xiaoyan Ai
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, PR China
| | - Xue Jiang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, PR China
| | - Jiao Chen
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, PR China
| | - Ruirui Li
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, PR China
| | - Yingwei Ai
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, Sichuan, 610065, PR China.
| |
Collapse
|
12
|
Soares R, Trejo J, Lorite MJ, Figueira E, Sanjuán J, Videira e Castro I. Diversity, Phylogeny and Plant Growth Promotion Traits of Nodule Associated Bacteria Isolated from Lotus parviflorus. Microorganisms 2020; 8:microorganisms8040499. [PMID: 32244524 PMCID: PMC7232477 DOI: 10.3390/microorganisms8040499] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/18/2020] [Accepted: 03/30/2020] [Indexed: 11/18/2022] Open
Abstract
Lotus spp. are widely used as a forage to improve pastures, and inoculation with elite rhizobial strains is a common practice in many countries. However, only a few Lotus species have been studied in the context of plant-rhizobia interactions. In this study, forty highly diverse bacterial strains were isolated from root nodules of wild Lotus parviflorus plants growing in two field locations in Portugal. However, only 10% of these isolates could nodulate one or more legume hosts tested, whereas 90% were thought to be opportunistic nodule associated bacteria. Phylogenetic studies place the nodulating isolates within the Bradyrhizobium genus, which is closely related to B. canariense and other Bradyrhizobium sp. strains isolated from genistoid legumes and Ornithopus spp. Symbiotic nodC and nifH gene phylogenies were fully consistent with the taxonomic assignment and host range. The non-nodulating bacteria isolated were alpha- (Rhizobium/Agrobacterium), beta- (Massilia) and gamma-proteobacteria (Pseudomonas, Lysobacter, Luteibacter, Stenotrophomonas and Rahnella), as well as some bacteroidetes from genera Sphingobacterium and Mucilaginibacter. Some of these nodule-associated bacteria expressed plant growth promotion (PGP) traits, such as production of lytic enzymes, antagonistic activity against phytopathogens, phosphate solubilization, or siderophore production. This argues for a potential beneficial role of these L. parviflorus nodule-associated bacteria.
Collapse
Affiliation(s)
- Ricardo Soares
- Laboratório de Microbiologia do Solo, UEISSAFSV, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV, I.P.), 2780-159 Oeiras, Portugal; (R.S.); (J.T.)
- Laboratório de Bioquímica Inorgânica e RMN, Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal
| | - Jesús Trejo
- Laboratório de Microbiologia do Solo, UEISSAFSV, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV, I.P.), 2780-159 Oeiras, Portugal; (R.S.); (J.T.)
| | - Maria J. Lorite
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, CSIC, E-18160 Granada, Spain; (M.L.); (J.S.)
| | - Etelvina Figueira
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal;
| | - Juan Sanjuán
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín, CSIC, E-18160 Granada, Spain; (M.L.); (J.S.)
| | - Isabel Videira e Castro
- Laboratório de Microbiologia do Solo, UEISSAFSV, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV, I.P.), 2780-159 Oeiras, Portugal; (R.S.); (J.T.)
- Correspondence:
| |
Collapse
|
13
|
Abstract
The ability of endophytes to colonize every plant tissue has led to the opportunity of using the microorganism in a lot of biological applications. Endophytes are beneficial to their host cells as such its application is observed in every aspects of life. This study therefore endeavored to give an analysis of endophytes, what they were and what they had been used for till the present time. Sampling of several literature studies in endophytes was done in this study to enable a complete understanding of the mechanism of application of the actions of endophytes, so as to be able to do a thorough assessment of the current state in the knowledge of the microbes. From the complete analysis of the literature on the application and use of endophytes, in nutrient asquition and increase the stress tolerance in plants. This study provided a platform for further research gaps through the presentation of what endophytes were, what they had been used for till date, the mechanism of operation of the micro-organism and the type of interaction between them and their hosts. There are still ways to improve on the methods of application of endophytes as a type of biological organism. This will be done by adjusting to the current trends in biological studies using molecular mechanization, following an intensive further study on endophyte mechanisms.
Collapse
|
14
|
Deng ZS, Kong ZY, Zhang BC, Zhao LF. Insights into non-symbiotic plant growth promotion bacteria associated with nodules of Sphaerophysa salsula growing in northwestern China. Arch Microbiol 2019; 202:399-409. [DOI: 10.1007/s00203-019-01752-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 10/13/2019] [Accepted: 10/16/2019] [Indexed: 11/25/2022]
|
15
|
Zhao L, Xu Y, Lai X. Antagonistic endophytic bacteria associated with nodules of soybean (Glycine max L.) and plant growth-promoting properties. Braz J Microbiol 2018; 49:269-278. [PMID: 29117917 PMCID: PMC5914205 DOI: 10.1016/j.bjm.2017.06.007] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 06/07/2017] [Accepted: 06/19/2017] [Indexed: 11/16/2022] Open
Abstract
A total of 276 endophytic bacteria were isolated from the root nodules of soybean (Glycine max L.) grown in 14 sites in Henan Province, China. The inhibitory activity of these bacteria against pathogenic fungus Phytophthora sojae 01 was screened in vitro. Six strains with more than 63% inhibitory activities were further characterized through optical epifluorescence microscopic observation, sequencing, and phylogenetic analysis of 16S rRNA gene, potential plant growth-promoting properties analysis, and plant inoculation assay. On the basis of the phylogeny of 16S rRNA genes, the six endophytic antagonists were identified as belonging to five genera: Enterobacter, Acinetobacter, Pseudomonas, Ochrobactrum, and Bacillus. The strain Acinetobacter calcoaceticus DD161 had the strongest inhibitory activity (71.14%) against the P. sojae 01, which caused morphological abnormal changes of fungal mycelia; such changes include fracture, lysis, formation of a protoplast ball at the end of hyphae, and split ends. Except for Ochrobactrum haematophilum DD234, other antagonistic strains showed the capacity to produce siderophore, indole acetic acid, and nitrogen fixation activity. Regression analysis suggested a significant positive correlation between siderophore production and inhibition ratio against P. sojae 01. This study demonstrated that nodule endophytic bacteria are important resources for searching for inhibitors specific to the fungi and for promoting effects for soybean seedlings.
Collapse
Affiliation(s)
- LongFei Zhao
- Shangqiu Normal University, College of Life Sciences, Key Laboratory of Plant-Microbe Interactions of Henan, Shangqiu, Henan, PR China.
| | - YaJun Xu
- Shangqiu Normal University, College of Life Sciences, Key Laboratory of Plant-Microbe Interactions of Henan, Shangqiu, Henan, PR China
| | - XinHe Lai
- The First Affiliated Hospital of Wenzhou Medical University, Institute of Inflammation & Diseases, Wenzhou, China
| |
Collapse
|
16
|
Bacterial community structure associated with the rhizosphere soils and roots of Stellera chamaejasme L. along a Tibetan elevation gradient. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1336-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
|
17
|
Molecular and phenotypic characterization of endophytic bacteria isolated from sulla nodules. Microb Pathog 2017; 111:225-231. [DOI: 10.1016/j.micpath.2017.08.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 08/18/2017] [Accepted: 08/30/2017] [Indexed: 11/30/2022]
|
18
|
Bouchiba Z, Boukhatem ZF, Ighilhariz Z, Derkaoui N, Kerdouh B, Abdelmoumen H, Abbas Y, Missbah El Idrissi M, Bekki A. Diversity of nodular bacteria ofScorpiurus muricatusin western Algeria and their impact on plant growth. Can J Microbiol 2017; 63:450-463. [DOI: 10.1139/cjm-2016-0493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A total of 51 bacterial strains were isolated from root nodules of Scorpiurus muricatus sampled from 6 regions of western Algeria. Strain diversity was assessed by rep-PCR amplification fingerprinting, which grouped the isolates into 28 different clusters. Partial nucleotide sequencing of the 16S rRNA gene and BLAST analysis revealed that root nodules of S. muricatus were colonized by different species close to Rhizobium vignae, Rhizobium radiobacter, Rhizobium leguminosarum, Phyllobacterium ifriqiyense, Phyllobacterium endophyticum, Starkeya sp., and Pseudomonas sp. However, none of these strains was able to form nodules on its host plant; even nodC was present in a single strain (SMT8a). The inoculation test showed a great improvement in the growth of inoculated plants compared with noninoculated control plants. A significant amount of indole acetic acid was produced by some strains, but only 2 strains could solubilize phosphate. In this report we described for the first time the diversity of bacteria isolated from root nodules of S. muricatus growing in different regions in western Algeria and demonstrated their potential use in promoting plant growth.
Collapse
Affiliation(s)
- Zoulikha Bouchiba
- Laboratoire de Biotechnologie des Rhizobiums et Amélioration des Plantes, Université d’Oran1 Ahmed Ben Bella, Oran, Algérie
| | - Zineb Faiza Boukhatem
- Laboratoire de Biotechnologie des Rhizobiums et Amélioration des Plantes, Université d’Oran1 Ahmed Ben Bella, Oran, Algérie
| | - Zohra Ighilhariz
- Laboratoire de Biotechnologie des Rhizobiums et Amélioration des Plantes, Université d’Oran1 Ahmed Ben Bella, Oran, Algérie
| | - Nouria Derkaoui
- Laboratoire de Biotechnologie des Rhizobiums et Amélioration des Plantes, Université d’Oran1 Ahmed Ben Bella, Oran, Algérie
| | | | - Hanaa Abdelmoumen
- Laboratoire de Microbiologie et Biologie Moléculaire, Faculté des sciences, Université Mohammed V, Rabat, Maroc
| | - Younes Abbas
- Faculté Polydisciplinaire de Béni Mellal, Mghila B.P. 592, Université Sultan Moulay Slimane, Béni Mellal – Maroc
| | - Mustapha Missbah El Idrissi
- Laboratoire de Microbiologie et Biologie Moléculaire, Faculté des sciences, Université Mohammed V, Rabat, Maroc
| | - Abdelkader Bekki
- Laboratoire de Biotechnologie des Rhizobiums et Amélioration des Plantes, Université d’Oran1 Ahmed Ben Bella, Oran, Algérie
| |
Collapse
|
19
|
Andrews M, Andrews ME. Specificity in Legume-Rhizobia Symbioses. Int J Mol Sci 2017; 18:E705. [PMID: 28346361 PMCID: PMC5412291 DOI: 10.3390/ijms18040705] [Citation(s) in RCA: 136] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/19/2017] [Accepted: 03/21/2017] [Indexed: 11/24/2022] Open
Abstract
Most species in the Leguminosae (legume family) can fix atmospheric nitrogen (N₂) via symbiotic bacteria (rhizobia) in root nodules. Here, the literature on legume-rhizobia symbioses in field soils was reviewed and genotypically characterised rhizobia related to the taxonomy of the legumes from which they were isolated. The Leguminosae was divided into three sub-families, the Caesalpinioideae, Mimosoideae and Papilionoideae. Bradyrhizobium spp. were the exclusive rhizobial symbionts of species in the Caesalpinioideae, but data are limited. Generally, a range of rhizobia genera nodulated legume species across the two Mimosoideae tribes Ingeae and Mimoseae, but Mimosa spp. show specificity towards Burkholderia in central and southern Brazil, Rhizobium/Ensifer in central Mexico and Cupriavidus in southern Uruguay. These specific symbioses are likely to be at least in part related to the relative occurrence of the potential symbionts in soils of the different regions. Generally, Papilionoideae species were promiscuous in relation to rhizobial symbionts, but specificity for rhizobial genus appears to hold at the tribe level for the Fabeae (Rhizobium), the genus level for Cytisus (Bradyrhizobium), Lupinus (Bradyrhizobium) and the New Zealand native Sophora spp. (Mesorhizobium) and species level for Cicer arietinum (Mesorhizobium), Listia bainesii (Methylobacterium) and Listia angolensis (Microvirga). Specificity for rhizobial species/symbiovar appears to hold for Galega officinalis (Neorhizobium galegeae sv. officinalis), Galega orientalis (Neorhizobium galegeae sv. orientalis), Hedysarum coronarium (Rhizobium sullae), Medicago laciniata (Ensifer meliloti sv. medicaginis), Medicago rigiduloides (Ensifer meliloti sv. rigiduloides) and Trifolium ambiguum (Rhizobium leguminosarum sv. trifolii). Lateral gene transfer of specific symbiosis genes within rhizobial genera is an important mechanism allowing legumes to form symbioses with rhizobia adapted to particular soils. Strain-specific legume rhizobia symbioses can develop in particular habitats.
Collapse
Affiliation(s)
- Mitchell Andrews
- Faculty of Agriculture and Life Sciences, Lincoln University, PO Box 84, Lincoln 7647, New Zealand.
| | - Morag E Andrews
- Faculty of Agriculture and Life Sciences, Lincoln University, PO Box 84, Lincoln 7647, New Zealand.
| |
Collapse
|
20
|
Korir H, Mungai NW, Thuita M, Hamba Y, Masso C. Co-inoculation Effect of Rhizobia and Plant Growth Promoting Rhizobacteria on Common Bean Growth in a Low Phosphorus Soil. FRONTIERS IN PLANT SCIENCE 2017; 8:141. [PMID: 28224000 PMCID: PMC5293795 DOI: 10.3389/fpls.2017.00141] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 01/23/2017] [Indexed: 05/22/2023]
Abstract
Nitrogen (N) fixation through legume-Rhizobium symbiosis is important for enhancing agricultural productivity and is therefore of great economic interest. Growing evidence indicates that other soil beneficial bacteria can positively affect symbiotic performance of rhizobia. Nodule endophytic plant growth promoting rhizobacteria (PGPR) were isolated from common bean nodules from Nakuru County in Kenya and characterized 16S rDNA partial gene sequencing. The effect of co-inoculation of rhizobium and PGPR, on nodulation and growth of common bean (Phaseolus vulgaris L.) was also investigated using a low phosphorous soil under greenhouse conditions. Gram-positive nodule endophytic PGPR belonging to the genus Bacillus were successfully isolated and characterized. Two PGPR strains (Paenibacillus polymyxa and Bacillus megaterium), two rhizobia strains (IITA-PAU 987 and IITA-PAU 983) and one reference rhizobia strain (CIAT 899) were used in the co-inoculation study. Two common bean varieties were inoculated with Rhizobium strains singly or in a combination with PGPR to evaluate the effect on nodulation and growth parameters. Co-inoculation of IITA-PAU 987 + B. megaterium recorded the highest nodule weight (405.2 mg) compared to IITA-PAU 987 alone (324.8 mg), while CIAT 899 + B. megaterium (401.2 mg) compared to CIAT 899 alone (337.2 mg). CIAT 899 + B. megaterium recorded a significantly higher shoot dry weight (7.23 g) compared to CIAT 899 alone (5.80 g). However, there was no significant difference between CIAT 899 + P. polymyxa and CIAT 899 alone. Combination of IITA-PAU 987 and B. megaterium led to significantly higher shoot dry weight (6.84 g) compared to IITA-PAU 987 alone (5.32 g) but no significant difference was observed when co-inoculated with P. polymyxa. IITA-PAU 983 in combination with P. polymyxa led to significantly higher shoot dry weight (7.15 g) compared to IITA-PAU 983 alone (5.14 g). Plants inoculated with IITA-PAU 987 and B. megaterium received 24.0 % of their nitrogen demand from atmosphere, which showed a 31.1% increase compared to rhizobium alone. Contrast analysis confirmed the difference between the co-inoculation of rhizobia strains and PGPR compared to single rhizobia inoculation on the root dry weight. These results show that co-inoculation of PGPR and Rhizobia has a synergistic effect on bean growth. Use of PGPR may improve effectiveness of Rhizobium biofertilizers for common bean production. Testing of PGPR under field conditions will further elucidate their effectiveness on grain yields of common bean.
Collapse
Affiliation(s)
- Hezekiah Korir
- Department of Crops, Horticulture and Soils, Egerton UniversityNjoro, Kenya
| | - Nancy W. Mungai
- Department of Crops, Horticulture and Soils, Egerton UniversityNjoro, Kenya
| | - Moses Thuita
- International Institute of Tropical AgricultureNairobi, Kenya
| | - Yosef Hamba
- Department of Molecular Biology and Biotechnology, Pan African University Institute of Basic Science, Technology and Innovation, Jomo Kenyatta University of Agriculture and TechnologyNairobi, Kenya
| | - Cargele Masso
- International Institute of Tropical AgricultureNairobi, Kenya
| |
Collapse
|
21
|
Genetic diversity and functional characterization of endophytic Bacillus thuringiensis isolates from the North Western Indian Himalayas. ANN MICROBIOL 2016. [DOI: 10.1007/s13213-016-1244-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
22
|
Genetic diversity of rhizobia nodulating native Vicia spp. in Sweden. Syst Appl Microbiol 2016; 39:203-210. [DOI: 10.1016/j.syapm.2016.02.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 02/08/2016] [Accepted: 02/09/2016] [Indexed: 11/23/2022]
|
23
|
Chihaoui SA, Trabelsi D, Jdey A, Mhadhbi H, Mhamdi R. Inoculation of Phaseolus vulgaris with the nodule-endophyte Agrobacterium sp. 10C2 affects richness and structure of rhizosphere bacterial communities and enhances nodulation and growth. Arch Microbiol 2015; 197:805-13. [PMID: 25967041 DOI: 10.1007/s00203-015-1118-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 04/28/2015] [Accepted: 05/05/2015] [Indexed: 11/25/2022]
Abstract
Agrobacterium sp. 10C2 is a nonpathogenic and non-symbiotic nodule-endophyte strain isolated from root nodules of Phaseolus vulgaris. The effect of this strain on nodulation, plant growth and rhizosphere bacterial communities of P. vulgaris is investigated under seminatural conditions. Inoculation with strain 10C2 induced an increase in nodule number (+54 %) and plant biomass (+16 %). Grains also showed a significant increase in phosphorus (+53 %), polyphenols (+217 %), flavonoids (+62 %) and total antioxidant capacity (+82 %). The effect of strain 10C2 on bacterial communities was monitored using terminal restriction fragment length polymorphism of PCR-amplified 16S rRNA genes. When the initial soil was inoculated with strain 10C2 and left 15 days, the Agrobacterium strain did not affect TRF richness but changed structure. When common bean was sown in these soils and cultivated during 75 days, both TRF richness and structure were affected by strain 10C2. TRF richness increased in the rhizosphere soil, while it decreased in the bulk soil (root free). The taxonomic assignation of TRFs induced by strain 10C2 in the bean rhizosphere revealed the presence of four phyla (Firmicutes, Actinobacteria, Bacteroidetes and Proteobacteria) with a relative preponderance of Firmicutes, represented mainly by Bacillus species. Some of these taxa (i.e., Bacillus licheniformis, Bacillus pumilus, Bacillus senegalensis, Bacillus subtilis, Bacillus firmus and Paenibacillus koreensis) are particularly known for their plant growth-promoting potentialities. These results suggest that the beneficial effects of strain 10C2 observed on plant growth and grain quality are explained at least in part by the indirect effect through the promotion of beneficial microorganisms.
Collapse
Affiliation(s)
- Saif-Allah Chihaoui
- Laboratory of Legumes, Centre of Biotechnology of Borj-Cédria, BP 901, 2050, Hammam-Lif, Tunisia
| | | | | | | | | |
Collapse
|
24
|
Ezzakkioui F, El Mourabit N, Chahboune R, Castellano-Hinojosa A, Bedmar EJ, Barrijal S. Phenotypic and genetic characterization of rhizobia isolated from Hedysarum flexuosum in Northwest region of Morocco. J Basic Microbiol 2015; 55:830-7. [PMID: 25721451 DOI: 10.1002/jobm.201400790] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 01/22/2015] [Indexed: 11/11/2022]
Abstract
Seventy bacterial strains were isolated from root nodules of the legume Hedysarum flexuosum grown wild in soils from Northwest Morocco. Repetitive extragenic palindromic (REP)-polymerase chain reaction (PCR) clustered the strains into 30 REP-PCR groups. The nearly complete sequence of the 16S rRNA gene from a representative strain of each REP-PCR pattern showed that 17 strains were closely related to members of the genus Rhizobium of the family Rhizobiaceae of the Alphaproteobacteria. Pairwise alignments between globally aligned sequences of the 16S rRNA gene indicated that the strains from H. flexuosum had 99.75-100% identity with Rhizobium sullae type strain IS123(T). The phenotypic characteristics analyzed allowed description of a wide physiological diversity among the isolates, where the carbohydrate assimilation test was the most discriminating. Analysis of the 16S rRNA gene of a representative strains from the remaining 13 REP-PCR groups showed they belong to a wide variety of phylogenetic groups being closely related to species of genera Stenotrophomonas, Serratia, Massilia, Acinetobacter, Achromobacter, and Pseudomonas from the Beta- and Gammaproteobacteria. The R. sullae strains identified in this study produced effective symbiosis with their original host plant. None of the other bacterial strains could form nodules on H. flexuosum.
Collapse
Affiliation(s)
- Fatima Ezzakkioui
- Lab. Valorisation Biotechnologique des Microorganismes, Faculty of Sciences and Techniques, University Abdelmalek Essaadi, Tanger, Morocco
| | | | - Rajaa Chahboune
- Lab. Valorisation Biotechnologique des Microorganismes, Faculty of Sciences and Techniques, University Abdelmalek Essaadi, Tanger, Morocco.,Faculté Polydisciplinaire de Nador, Morocco
| | - Antonio Castellano-Hinojosa
- Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín, Agencia CSIC, Granada, Spain
| | - Eulogio J Bedmar
- Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín, Agencia CSIC, Granada, Spain
| | - Said Barrijal
- Lab. Valorisation Biotechnologique des Microorganismes, Faculty of Sciences and Techniques, University Abdelmalek Essaadi, Tanger, Morocco
| |
Collapse
|
25
|
Pandya M, Rajput M, Rajkumar S. Exploring plant growth promoting potential of non rhizobial root nodules endophytes of Vigna radiata. Microbiology (Reading) 2015. [DOI: 10.1134/s0026261715010105] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
26
|
Adegoke AA, Okoh AI. Antibiogram of Stenotrophomonas maltophilia Isolated From Nkonkobe Municipality, Eastern Cape Province, South Africa. Jundishapur J Microbiol 2014; 8:e13975. [PMID: 25789125 PMCID: PMC4350050 DOI: 10.5812/jjm.13975] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 06/16/2014] [Accepted: 06/20/2014] [Indexed: 11/17/2022] Open
Abstract
Background: Assessment of resistance genes is imperative, as they become disseminated to bacterial flora in plants and to the indigenous bacterial community, and thus ultimately contributes to the clinical problems of antibiotic resistant pathogens. Objectives: The research was to assess the antibiotic characteristics and incidence of sul3 genes of Stenotrophomonas maltophilia isolates recovered from rhizospheres plant in Nkonkobe Municipality. Materials and Methods: Identification and assessment of resistance genes (sul2 and sul3 genes) were carried out using polymerase chain reaction (PCR). Analytical profile index (API) was used for biochemical characterization for identification before the PCR. Antibiotic susceptibility test was carried out using the approved guidelines and standards of Clinical Laboratory Standard Institute (CLSI). Results: A total of 125 isolates were identified, composed of 120 (96%) from grass root rhizosphere and 5 (4%) from soil butternut root rhizosphere. In vitro antibiotic susceptibility tests showed varying resistances to meropenem (8.9%), cefuroxime (95.6 %), ampicillin-sulbactam (53.9%), ceftazidime (10.7%), cefepime (29.3 %), minocycline (2.2%), kanamycin (56.9%), ofloxacin (2.9%), levofloxacin (1.3%), moxifloxacin (2.8%), ciprofloxacin (24.3%), gatifloxacin (1.3%), polymyxin B (2.9 %), cotrimoxazole (26.1%), trimethoprim (98.6%) and aztreonam (58%). The isolates were susceptible to the fluoroquinolones (74.3-94.7%), polymycin (97.1%) and meropenem (88.1%). The newest sulphonamide resistance gene, sul3, was detected among the trimethoprim-sulfamethoxazole (cotrimoxazole)-resistant isolates, while the most frequent sulphonamide-resistant gene in animal source isolates, sul2, was not. Conclusions: The commensal S. maltophilia isolates in the Nkonkobe Municipality environment harbored the resistant gene sul3 as clinical counterparts, especially from the perspective of reservoirs of antibiotic resistance determinants.
Collapse
Affiliation(s)
- Anthony Ayodeji Adegoke
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
- Corresponding author: Anthony Ayodeji Adegoke, Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa. Tel: +27-732387411, E-mail:
| | - Anthony I. Okoh
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Alice, South Africa
| |
Collapse
|
27
|
Diversity of endophytic bacteria associated with nodules of two indigenous legumes at different altitudes of the Qilian Mountains in China. Syst Appl Microbiol 2014; 37:457-65. [DOI: 10.1016/j.syapm.2014.05.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 05/05/2014] [Accepted: 05/07/2014] [Indexed: 11/22/2022]
|
28
|
Zhao LF, Xu YJ, Ma ZQ, Deng ZS, Shan CJ, Wei GH. Colonization and plant growth promoting characterization of endophytic Pseudomonas chlororaphis strain Zong1 isolated from Sophora alopecuroides root nodules. Braz J Microbiol 2013; 44:623-31. [PMID: 24294262 PMCID: PMC3833168 DOI: 10.1590/s1517-83822013000200043] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Accepted: 07/23/2012] [Indexed: 11/29/2022] Open
Abstract
The endophytic strain Zong1 isolated from root nodules of the legume Sophora alopecuroides was characterized by conducting physiological and biochemical tests employing gfp-marking, observing their plant growth promoting characteristics (PGPC) and detecting plant growth parameters of inoculation assays under greenhouse conditions. Results showed that strain Zong1 had an effective growth at 28 ºC after placed at 4–60 ºC for 15 min, had a wide range pH tolerance of 6.0–11.0 and salt tolerance up to 5% of NaCl. Zong1 was resistant to the following antibiotics (μg/mL): Phosphonomycin (100), Penicillin (100) and Ampicillin (100). It could grow in the medium supplemented with 1.2 mmol/L Cu, 0.1% (w/v) methylene blue and 0.1–0.2% (w/v) methyl red, respectively. Zong1 is closely related to Pseudomonas chlororaphis based on analysis the sequence of 16S rRNA gene. Its expression of the gfp gene indicated that strain Zong1 may colonize in root or root nodules and verified by microscopic observation. Furthermore, co-inoculation with Zong1 and SQ1 (Mesorhizobium sp.) showed significant effects compared to single inoculation for the following PGPC parameters: siderophore production, phosphate solubilization, organic acid production, IAA production and antifungal activity in vitro. These results suggest strains P. chlororaphi Zong1 and Mesorhizobium sp. SQ1 have better synergistic or addictive effect. It was noteworthy that each growth index of co-inoculated Zong1+SQ1 in growth assays under greenhouse conditions is higher than those of single inoculation, and showed a significant difference (p < 0.05) when compared to a negative control. Therefore, as an endophyte P. chlororaphis Zong1 may play important roles as a potential plant-growth promoting agent.
Collapse
Affiliation(s)
- Long Fei Zhao
- College of Life Sciences, Shangqiu Normal University, Shangqiu, Henan, China. ; College of Life Sciences, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A & F University, Yangling, Shaanxi, China
| | | | | | | | | | | |
Collapse
|
29
|
Gurkanli CT, Ozkoc I, Gunduz I. Genetic diversity of Vicia faba L. and Pisum sativum L. nodulating rhizobia in the central Black Sea region of Turkey. ANN MICROBIOL 2013. [DOI: 10.1007/s13213-013-0638-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
30
|
Characterization of root-nodule bacteria isolated from Vicia faba and selection of plant growth promoting isolates. World J Microbiol Biotechnol 2013; 29:1099-106. [PMID: 23397108 DOI: 10.1007/s11274-013-1278-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 01/30/2013] [Indexed: 10/27/2022]
Abstract
A collection of 104 isolates from root-nodules of Vicia faba was submitted to 16S rRNA PCR-RFLP typing. A representative sample was further submitted to sequence analysis of 16S rRNA. Isolates were assigned to 12 genera. All the nodulating isolates (45 %) were closely related to Rhizobium leguminosarum USDA2370(T) (99.34 %). The remaining isolates, including potential human pathogens, failed to nodulate their original host. They were checked for presence of symbiotic genes, P-solubilization, phytohormone and siderophore production, and then tested for their growth promoting abilities. Results indicated that 9 strains could induce significant increase (41-71 %) in shoot dry yield of faba bean. A Pseudomonas strain was further assessed in on-farm trial in combination with a selected rhizobial strain. This work indicated that nodule-associated bacteria could be a valuable pool for selection of effective plant growth promoting isolates. Nevertheless, the possible involvement of nodules in increasing risks related to pathogenic bacteria should not be neglected and needs to be investigated further.
Collapse
|
31
|
Guefrachi I, Rejili M, Mahdhi M, Mars M. Assessing genotypic diversity and symbiotic efficiency of five rhizobial legume interactions under cadmium stress for soil phytoremediation. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2013; 15:938-951. [PMID: 23819287 DOI: 10.1080/15226514.2012.751350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In the framework of soil phytoremediation using local legume plants coupled with their native root-nodulating bacteria to increase forage yields and preserve contaminated soils in arid regions of Tunisia, we investigated the diversity of bacteria from root nodules of Lathyrus sativus, Lens culinaris, Medicago marina, M. truncatula, and M. minima and the symbiotic efficiency of these five legume symbiosis under Cadmium stress. Fifty bacterial strains were characterized using physiological and biochemical features such heavy metals resistant, and PCR-RFLP of 16S rDNA. Taxonomically, the isolates nodulating L. sativus, and L. culinaris are species within the genera Rhizobium and the ones associated to Medicago sp, within the genera Sinorhizobium. The results revealed also that the cadmium tolerance of the different legumes-rhizobia interaction was as follows: M. minima < M. truncatula < M. marina < L. sativus < L. culinaris indicating that the effect of Cadmium on root nodulation and biomass production is more deleterious on M. minima-S. meliloti and M. truncatula-S. meliloti than in other symbiosis. Knowledge on genetic and functional diversity of M. marina, L. sativus and L. culinaris microsymbiotes is very useful for inoculant strain selection and can be selected to develop inoculants for soil phytoremediation.
Collapse
Affiliation(s)
- I Guefrachi
- Research Unit Biodiversity & Valorization of Arid Areas Bioressources (BVBAA) - Faculty of Sciences of Gabès Erriadh-Zrig, Tunisia
| | | | | | | |
Collapse
|
32
|
Ramírez-Bahena MH, Tejedor C, Martín I, Velázquez E, Peix A. Endobacter medicaginis gen. nov., sp. nov., isolated from alfalfa nodules in an acidic soil. Int J Syst Evol Microbiol 2012; 63:1760-1765. [PMID: 23002052 DOI: 10.1099/ijs.0.041368-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A bacterial strain designated M1MS02(T) was isolated from a surface-sterilized nodule of Medicago sativa in Zamora (Spain). The 16S rRNA gene sequence of this strain showed 96.5 and 96.2 % similarity, respectively, with respect to Gluconacetobacter liquefaciens IFO 12388(T) and Granulibacter bethesdensis CGDNIH1(T) from the family Acetobacteraceae. The novel isolate was a Gram-stain-negative, non-sporulating, aerobic coccoid to rod-shaped bacterium that was motile by a subpolar flagellum. The major fatty acid was C18 : 1ω7c and the major ubiquinone was Q-10. The lipid profile consisted of diphosphatidylglycerol, phosphatidylethanolamine, two aminophospholipids, three aminolipids, four glycolipids, two phospholipids and one lipid. Strain M1MS02(T) was catalase-positive and oxidase- and urease-negative. Acetate and lactate were not oxidized. Acetic acid was produced from ethanol in culture media supplemented with 2 % CaCO3. Ammonium sulphate was assimilated in glucose medium. The strain produced dihydroxyacetone from glycerol. Phylogenetic and phenotypic analyses commonly used to differentiate genera within the family Acetobacteraceae showed that strain M1MS02(T) should be classified as representing a novel species of a new genus within this family, for which the name Endobacter medicaginis gen. nov., sp. nov. is proposed. The type strain of the type species is M1MS02(T) ( = LMG 26838(T) = CECT 8088(T)). To our knowledge, this is the first report of a member of the Acetobacteraceae occurring as a legume nodule endophyte.
Collapse
Affiliation(s)
- Martha Helena Ramírez-Bahena
- Unidad Asociada Grupo de Interacciones planta-microorganismo, Universidad de Salamanca-IRNASA (CSIC), Salamanca, Spain
- Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), Salamanca, Spain
| | - Carmen Tejedor
- Departamento de Microbiología y Genética, Universidad de Salamanca, Salamanca, Spain
| | - Isidro Martín
- Departamento de Microbiología y Genética, Universidad de Salamanca, Salamanca, Spain
| | - Encarna Velázquez
- Departamento de Microbiología y Genética, Universidad de Salamanca, Salamanca, Spain
- Unidad Asociada Grupo de Interacciones planta-microorganismo, Universidad de Salamanca-IRNASA (CSIC), Salamanca, Spain
| | - Alvaro Peix
- Unidad Asociada Grupo de Interacciones planta-microorganismo, Universidad de Salamanca-IRNASA (CSIC), Salamanca, Spain
- Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), Salamanca, Spain
| |
Collapse
|
33
|
Chihaoui SA, Mhadhbi H, Mhamdi R. The antibiosis of nodule-endophytic agrobacteria and its potential effect on nodule functioning of Phaseolus vulgaris. Arch Microbiol 2012; 194:1013-21. [DOI: 10.1007/s00203-012-0837-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 07/04/2012] [Accepted: 07/30/2012] [Indexed: 10/28/2022]
|
34
|
Salem S, Saidi S, Chihaoui SA, Mhamdi R. Inoculation of Phaseolus vulgaris, Medicago laciniata and Medicago polymorpha with Agrobacterium sp. strain 10C2 may enhance nodulation and shoot dry weight but does not affect host range specificity. ANN MICROBIOL 2012. [DOI: 10.1007/s13213-012-0439-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
35
|
Dudeja SS, Giri R, Saini R, Suneja-Madan P, Kothe E. Interaction of endophytic microbes with legumes. J Basic Microbiol 2011; 52:248-60. [DOI: 10.1002/jobm.201100063] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 04/27/2011] [Indexed: 11/11/2022]
|
36
|
Deng ZS, Zhao LF, Kong ZY, Yang WQ, Lindström K, Wang ET, Wei GH. Diversity of endophytic bacteria within nodules of the Sphaerophysa salsula in different regions of Loess Plateau in China. FEMS Microbiol Ecol 2011; 76:463-75. [PMID: 21303396 DOI: 10.1111/j.1574-6941.2011.01063.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
A total of 115 endophytic bacteria were isolated from root nodules of the wild legume Sphaerophysa salsula grown in two ecological regions of Loess Plateau in China. The genetic diversity and phylogeny of the strains were revealed by restriction fragment length polymorphism and sequencing of 16S rRNA gene and enterobacterial repetitive intergenic consensus-PCR. Their symbiotic capacity was checked by nodulation tests and analysis of nifH gene sequence. This is the first systematic study on endophytic bacteria associated with S. salsula root nodules. Fifty of the strains found were symbiotic bacteria belonging to eight putative species in the genera Mesorhizobium, Rhizobium and Sinorhizobium, harboring similar nifH genes; Mesorhizobium gobiense was the main group and 65 strains were nonsymbiotic bacteria related to 17 species in the genera Paracoccus, Sphingomonas, Inquilinus, Pseudomonas, Serratia, Mycobacterium, Nocardia, Streptomyces, Paenibacillus, Brevibacillus, Staphylococcus, Lysinibacillus and Bacillus, which were universally coexistent with symbiotic bacteria in the nodules. Differing from other similar studies, the present study is the first time that symbiotic and nonsymbiotic bacteria have been simultaneously isolated from the same root nodules, offering the possibility to accurately reveal the correlation between these two kinds of bacteria. These results provide valuable information about the interactions among the symbiotic bacteria, nonsymbiotic bacteria and their habitats.
Collapse
Affiliation(s)
- Zhen Shan Deng
- College of Life Sciences, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A & F University, Yangling, Shaanxi, China
| | | | | | | | | | | | | |
Collapse
|
37
|
Choudhury B, Azad P, Kalita MC. Variability in Symbiotic Effectiveness of Native Rhizobia in Acid Stress. Curr Microbiol 2010; 61:85-91. [DOI: 10.1007/s00284-009-9579-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2009] [Accepted: 12/23/2009] [Indexed: 10/20/2022]
|
38
|
Berg G, Egamberdieva D, Lugtenberg B, Hagemann M. Symbiotic Plant–Microbe Interactions: Stress Protection, Plant Growth Promotion, and Biocontrol by Stenotrophomonas. CELLULAR ORIGIN, LIFE IN EXTREME HABITATS AND ASTROBIOLOGY 2010. [DOI: 10.1007/978-90-481-9449-0_22] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
39
|
Li Q, Zhang X, Zou L, Chen Q, Fewer DP, Lindström K. Horizontal gene transfer and recombination shape mesorhizobial populations in the gene center of the host plantsAstragalus luteolusandAstragalus ernestiiin Sichuan, China. FEMS Microbiol Ecol 2009; 70:71-9. [DOI: 10.1111/j.1574-6941.2009.00776.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
40
|
Grube M, Berg G. Microbial consortia of bacteria and fungi with focus on the lichen symbiosis. FUNGAL BIOL REV 2009. [DOI: 10.1016/j.fbr.2009.10.001] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
41
|
Álvarez-Martínez ER, Valverde Á, Ramírez-Bahena MH, García-Fraile P, Tejedor C, Mateos PF, Santillana N, Zúñiga D, Peix A, Velázquez E. The analysis of core and symbiotic genes of rhizobia nodulating Vicia from different continents reveals their common phylogenetic origin and suggests the distribution of Rhizobium leguminosarum strains together with Vicia seeds. Arch Microbiol 2009; 191:659-68. [DOI: 10.1007/s00203-009-0495-6] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2009] [Revised: 05/31/2009] [Accepted: 07/02/2009] [Indexed: 11/30/2022]
|
42
|
Novel associations between rhizobial populations and legume species within the genera Lathyrus and O xytropis grown in the temperate region of China. ACTA ACUST UNITED AC 2009; 52:182-92. [PMID: 19277530 DOI: 10.1007/s11427-008-0132-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2008] [Accepted: 09/17/2008] [Indexed: 10/21/2022]
Abstract
Fifty rhizobial isolates of Lathyrus and Oxytropis collected from northern regions of China were studied in their genotypic characterization based upon analyses of ARDRA, 16S-23S IGS PCR-RFLP, TP-RAPD, MLEE, sequences of 16S rDNA gene and housekeeping genes of atpD, recA and glnII. The results demonstrated that most of the Lathyrus rhizobia belonged to Rhizobium and most of the Oxytropis rhizobia belonged to Sinorhizobium. A novel group of Rhizobium sp. I and S. meliloti were identified as the main microsymbionts respectively associated with Lathyrus and Oxytropis species in the collection area, which were new associations between rhizobia and the mentioned hosts. This study also provides new evidence for biogeography of rhizobia.
Collapse
|
43
|
Hou BC, Wang ET, Li Y, Jia RZ, Chen WF, Man CX, Sui XH, Chen WX. Rhizobial resource associated with epidemic legumes in Tibet. MICROBIAL ECOLOGY 2009; 57:69-81. [PMID: 18568286 DOI: 10.1007/s00248-008-9397-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2007] [Revised: 04/20/2008] [Accepted: 04/22/2008] [Indexed: 05/26/2023]
Abstract
A total of 128 bacterial test strains originated from Astragalus, Caragana, Gueldenstaedtia, Medicago, Melilotus, Oxytropis, Trifolium, and Vicia grown in Tibet were characterized phenotypically and genomically. Based upon the consensus of grouping results, they were identified as 16 putative species. Twenty-five test strains belonging to seven putative species of Agrobacterium, Bradyrhizobium, and Rhizobium might be nonsymbiotic bacteria and the remaining 103 test strains were symbiotic bacteria belonging to Mesorhizobium, Rhizobium, and Sinorhizobium meliloti. Although no novel taxon was detected in the symbiotic bacteria, several characters including the alkaliphilic psychrotolerance revealed that the Tibetan rhizobia could be ecotypes adapted to the local conditions. The results also demonstrated that frequent lateral transfer of symbiotic genes might have happened in the Tibetan rhizobia since nodC genes similar to that of S. meliloti were found in several Rhizobium test strains and all the Mesorhizobium species had very similar nodC genes despite their genomic background. All of these findings demonstrated that the Tibetan rhizobia were an important resource for further studies on rhizobial ecology and application.
Collapse
Affiliation(s)
- Bao Chao Hou
- Key Laboratory of Agro-Microbial Resource and Application, Ministry of Agriculture/College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Screening of high effective alfalfa rhizobial strains with a comprehensive protocol. ANN MICROBIOL 2008. [DOI: 10.1007/bf03175583] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
45
|
Lei X, Wang ET, Chen WF, Sui XH, Chen WX. Diverse bacteria isolated from root nodules of wild Vicia species grown in temperate region of China. Arch Microbiol 2008; 190:657-71. [DOI: 10.1007/s00203-008-0418-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2007] [Revised: 07/10/2008] [Accepted: 07/14/2008] [Indexed: 11/24/2022]
|