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Odeku OA, Ogunniyi QA, Ogbole OO, Fettke J. Forgotten Gems: Exploring the Untapped Benefits of Underutilized Legumes in Agriculture, Nutrition, and Environmental Sustainability. PLANTS (BASEL, SWITZERLAND) 2024; 13:1208. [PMID: 38732424 PMCID: PMC11085438 DOI: 10.3390/plants13091208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/16/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024]
Abstract
In an era dominated by conventional agricultural practices, underutilized legumes termed "Forgotten Gems" represent a reservoir of untapped benefits with the unique opportunity to diversify agricultural landscapes and enhance global food systems. Underutilized crops are resistant to abiotic environmental conditions such as drought and adapt better to harsh soil and climatic conditions. Underutilized legumes are high in protein and secondary metabolites, highlighting their role in providing critical nutrients and correcting nutritional inadequacies. Their ability to increase dietary variety and food security emerges as a critical component of their importance. Compared to mainstream crops, underutilized legumes have been shown to reduce the environmental impact of climate change. Their capacity for nitrogen fixation and positive impact on soil health make them sustainable contributors to biodiversity conservation and environmental balance. This paper identifies challenges and proposes strategic solutions, showcasing the transformative impact of underutilized legumes on agriculture, nutrition, and sustainability. These "Forgotten Gems" should be recognized, integrated into mainstream agricultural practices, and celebrated for their potential to revolutionize global food production while promoting environmental sustainability.
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Affiliation(s)
- Oluwatoyin A. Odeku
- Department of Pharmaceutics and Industrial Pharmacy, University of Ibadan, Ibadan 200132, Nigeria;
| | - Queeneth A. Ogunniyi
- Department of Pharmacognosy, University of Ibadan, Ibadan 200132, Nigeria; (Q.A.O.); (O.O.O.)
| | - Omonike O. Ogbole
- Department of Pharmacognosy, University of Ibadan, Ibadan 200132, Nigeria; (Q.A.O.); (O.O.O.)
| | - Joerg Fettke
- Biopolymer Analytics, Institute of Biochemistry and Biology, University of Potsdam, 14476 Potsdam, Germany
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Cao Y, Tie D, Zhao JL, Wang XB, Yi JJ, Chai YF, Wang KF, Wang ET, Yue M. Diversity and distribution of Sophora davidii rhizobia in habitats with different irradiances and soil traits in Loess Plateau area of China. Syst Appl Microbiol 2021; 44:126224. [PMID: 34218028 DOI: 10.1016/j.syapm.2021.126224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 06/01/2021] [Accepted: 06/02/2021] [Indexed: 11/16/2022]
Abstract
To investigate the diversity and distribution of rhizobia associated with Sophora davidii in habitats with different light and soil conditions at the Loess Plateau, we isolated rhizobia from root nodules of this plant grown at 14 sites at forest edge or understory in Shaanxi Province. Based on PCR-RFLP and phylogenies of 16S rRNA gene, housekeeping genes (atpD, dnaK, recA), and symbiosis genes (nodC and nifH), a total of 271 isolates were identified as 16 Mesorhizobium genospecies, belonging to four nodC lineages, and three nifH lineages. The dominance of M. waimense in the forest edge and of M. amorphae/Mesorhizobium sp. X in the understory habitat evidenced the illumination as a possible factor to affect the diversity and biogeographic patterns of rhizobia. However, the results of Canonical Correlation Analysis (CCA) among the environmental factors and distribution of rhizobial genospecies illustrated that soil pH and contents of total phosphorus, total potassium and total organic carbon were the main determinants for the community structure of S. davidii rhizobia, while the illumination conditions and available P presented similar and minor effects. In addition, high similarity of nodC and nifH genes between Mesorhizobium robiniae and some S. davidii rhizobia under the forest of Robinia pseudoacacia might be evidence for symbiotic gene lateral transfer. These findings firstly brought an insight into the diversity and distribution of rhizobia associated with S. davidii, and revealed illumination conditions a possible factor with impacts less than the soil traits to drive the symbiosis association between rhizobia and their host legumes.
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Affiliation(s)
- Ying Cao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China; Department of Life Science, Northwest University, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China.
| | - Dan Tie
- Key Laboratory of Resource Biology and Biotechnology in Western China, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China; Department of Life Science, Northwest University, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China
| | - Jia Le Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China; Department of Life Science, Northwest University, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China
| | - Xu Bo Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China; Department of Life Science, Northwest University, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China
| | - Jun Jie Yi
- Key Laboratory of Resource Biology and Biotechnology in Western China, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China; Department of Life Science, Northwest University, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China
| | - Yong Fu Chai
- Key Laboratory of Resource Biology and Biotechnology in Western China, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China; Department of Life Science, Northwest University, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China
| | - Ke Feng Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China; Department of Life Science, Northwest University, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China
| | - En Tao Wang
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, 11340, Cd. México, Mexico
| | - Ming Yue
- Key Laboratory of Resource Biology and Biotechnology in Western China, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China; Department of Life Science, Northwest University, Taibai North Rd. 229, Xi'an City, Shaanxi Province, China.
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Local genetic structure and worldwide phylogenetic position of symbiotic Rhizobium leguminosarum strains associated with a traditional cultivated crop, Vicia ervilia, from Northern Morocco. Syst Appl Microbiol 2016; 39:409-17. [DOI: 10.1016/j.syapm.2016.06.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 06/03/2016] [Accepted: 06/08/2016] [Indexed: 11/15/2022]
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Li Y, Wang ET, Liu Y, Li X, Yu B, Ren C, Liu W, Li Y, Xie Z. Rhizobium anhuiense as the predominant microsymbionts of Lathyrus maritimus along the Shandong Peninsula seashore line. Syst Appl Microbiol 2016; 39:384-90. [PMID: 27480059 DOI: 10.1016/j.syapm.2016.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 07/06/2016] [Accepted: 07/08/2016] [Indexed: 10/21/2022]
Abstract
Beach pea [Lathyrus maritimus Bigelow, or Lathyrus japonicus subsp. maritimus (L.) P.W. Ball] is a wild legume distributed on the seashore line, and the rhizobia nodulating with this plant have been reported only rarely. In order to reveal the diversity of beach pea rhizobia on the seashore line of Shandong Peninsula, China, a total of 124 bacterial strains were isolated from the root nodules of beach pea plants collected from five sites. All the isolates were divided into five recA types after screening by recA gene sequence analysis and they consisted of Rhizobium anhuiense covering 122 symbiotic isolates in three recA types, as well as two single isolates Rhizobium sp. and Rhizobium lusitanum representing distinct recA types. The recA genotype III of R. anhuiense (103 isolates) represented by strain YIC11270 was dominant at all five sampling sites. Identical symbiotic genes (nodC and nifH) were detected in the three recA genotypes of R. anhuiense isolates that were closely related to those of the pea and faba rhizobia. This study clarified that R. anhuiense was the main symbiont for beach pea rhizobia on the seashore line of Shandong Peninsula. The low level genetic diversity of beach pea rhizobia revealed by both MLSA and the symbiotic genes might be related to the strong selection pressure produced by the saline-alkaline environment and the host plants.
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Affiliation(s)
- Yan Li
- Key Laboratory of Coastal Biology and Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003 Yantai, China
| | - En Tao Wang
- Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, C. P. 11340, Mexico City, Mexico
| | - Yajing Liu
- Key Laboratory of Coastal Biology and Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003 Yantai, China
| | - Xiangyue Li
- Key Laboratory of Coastal Biology and Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003 Yantai, China
| | - Bing Yu
- Key Laboratory of Coastal Biology and Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003 Yantai, China
| | - Chenggang Ren
- Key Laboratory of Coastal Biology and Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003 Yantai, China
| | - Wei Liu
- Key Laboratory of Coastal Biology and Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003 Yantai, China
| | - Yunzhao Li
- Key Laboratory of Coastal Biology and Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003 Yantai, China
| | - Zhihong Xie
- Key Laboratory of Coastal Biology and Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, 264003 Yantai, China.
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Teixeira H, Rodríguez-Echeverría S. Identification of symbiotic nitrogen-fixing bacteria from three African leguminous trees in Gorongosa National Park. Syst Appl Microbiol 2016; 39:350-8. [PMID: 27287843 DOI: 10.1016/j.syapm.2016.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 05/10/2016] [Accepted: 05/12/2016] [Indexed: 10/21/2022]
Abstract
The symbiosis between leguminous plants and symbiotic nitrogen-fixing bacteria is a key component of terrestrial ecosystems. Woody legumes are well represented in tropical African forests but despite their ecological and socio-economic importance, they have been little studied for this symbiosis. In this study, we examined the identity and diversity of symbiotic-nitrogen fixing bacteria associated with Acacia xanthophloea, Faidherbia albida and Albizia versicolor in the Gorongosa National Park (GNP) in Mozambique. To the best of our knowledge, this is the first report on the identity of symbiotic-nitrogen fixing bacteria in this region. 166 isolates were obtained and subjected to molecular identification. BOX-A1R PCR was used to discriminate different bacterial isolates and PCR-sequencing of 16S rDNA, and two housekeeping genes, glnII and recA, was used to identify the obtained bacteria. The gene nifH was also analyzed to assess the symbiotic capacity of the obtained bacteria. All isolates from F. albida and Al. versicolor belonged to the Bradyrhizobium genus whereas isolates from Ac. xanthophloea clustered with Mesorhizobium, Rhizobium or Ensifer strains. Soil chemical analysis revealed significant differences between the soils occupied by the three studied species. Thus, we found a clear delimitation in the rhizobial communities and soils associated with Ac. xanthophloea, F. albida and Al. versicolor, and higher rhizobial diversity for Ac. xanthophloea than previously reported.
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Affiliation(s)
- Helena Teixeira
- CFE - Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Susana Rodríguez-Echeverría
- CFE - Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
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Xu KW, Zou L, Penttinen P, Zeng X, Liu M, Zhao K, Chen C, Chen YX, Zhang X. Diversity and phylogeny of rhizobia associated with Desmodium spp. in Panxi, Sichuan, China. Syst Appl Microbiol 2015; 39:33-40. [PMID: 26654528 DOI: 10.1016/j.syapm.2015.10.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 10/24/2015] [Accepted: 10/26/2015] [Indexed: 11/19/2022]
Abstract
Thirty-four rhizobial isolates were obtained from root nodules of four wild Desmodium species growing in Panxi, Sichuan, China. According to the combined ARDRA and IGS-RFLP (CACAI) cluster analysis, Rhizobium, Pararhizobium and Mesorhizobium isolates outnumbered Bradyrhizobium isolates. In general, the isolates representing the same species from the same site clustered together. Furthermore, the four Desmodium species were all nodulated by more than one rhizobial species. AFLP and phenotypic analyses showed that the 34 isolates represented at least 32 distinct strains. None of the strains were found from more than one site or host, indicating a high degree of rhizobial diversity in Panxi. In the multilocus sequence analysis, the isolates were assigned to Pararhizobium giardinii, Bradyrhizobium japonicum, Mesorhizobium septentrionale, and to undescribed species of the genera Rhizobium, Bradyrhizobium and Agrobacterium.
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Affiliation(s)
- Kai Wei Xu
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 625014, China.
| | - Lan Zou
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 625014, China
| | - Petri Penttinen
- Department of Environmental Sciences, University of Helsinki, Helsinki Fin-00014, Finland
| | - Xiangzhong Zeng
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China
| | - Ming Liu
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 625014, China
| | - Ke Zhao
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 625014, China
| | - Cuiping Chen
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 625014, China
| | - Yuan Xue Chen
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 625014, China.
| | - Xiaoping Zhang
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 625014, China.
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Jiao YS, Liu YH, Yan H, Wang ET, Tian CF, Chen WX, Guo BL, Chen WF. Rhizobial Diversity and Nodulation Characteristics of the Extremely Promiscuous Legume Sophora flavescens. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2015; 28:1338-1352. [PMID: 26389798 DOI: 10.1094/mpmi-06-15-0141-r] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In present study, we report our extensive survey on the diversity and biogeography of rhizobia associated with Sophora flavescens, a sophocarpidine (matrine)-containing medicinal legume. We additionally investigated the cross nodulation, infection pattern, light and electron microscopies of root nodule sections of S. flavescens infected by various rhizobia. Seventeen genospecies of rhizobia belonging to five genera with seven types of symbiotic nodC genes were found to nodulate S. flavescens in natural soils. In the cross-nodulation tests, most representative rhizobia in class α-Proteobacteria, whose host plants belong to different cross-nodulation groups, form effective indeterminate nodules, while representative rhizobia in class β-Proteobacteria form ineffective nodules on S. flavescens. Highly host-specific biovars of Rhizobium leguminosarum (bv. trifolii and bv. viciae) and Rhizobium etli bv. phaseoli could establish symbioses with S. flavescens, providing further evidence that S. flavescens is an extremely promiscuous legume and it does not have strict selectivity on either the symbiotic genes or the species-determining housekeeping genes of rhizobia. Root-hair infection is found as the pattern that rhizobia have gained entry into the curled root hairs. Electron microscopies of ultra-thin sections of S. flavescens root nodules formed by different rhizobia show that the bacteroids are regular or irregular rod shape and nonswollen types. Some bacteroids contain poly-β-hydroxybutyrate (PHB), while others do not, indicating the synthesis of PHB in bacteroids is rhizobia-dependent. The extremely promiscuous symbiosis between S. flavescens and different rhizobia provide us a basis for future studies aimed at understanding the molecular interactions of rhizobia and legumes.
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Affiliation(s)
- Yin Shan Jiao
- 1 State Key Laboratory of Agrobiotechnology, Beijing 100193, China; College of Biological Sciences and Rhizobia Research Center, China Agricultural University, Beijing 100193, China
| | - Yuan Hui Liu
- 1 State Key Laboratory of Agrobiotechnology, Beijing 100193, China; College of Biological Sciences and Rhizobia Research Center, China Agricultural University, Beijing 100193, China
| | - Hui Yan
- 1 State Key Laboratory of Agrobiotechnology, Beijing 100193, China; College of Biological Sciences and Rhizobia Research Center, China Agricultural University, Beijing 100193, China
| | - En Tao Wang
- 1 State Key Laboratory of Agrobiotechnology, Beijing 100193, China; College of Biological Sciences and Rhizobia Research Center, China Agricultural University, Beijing 100193, China
- 2 Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México D. F. 11340, México
| | - Chang Fu Tian
- 1 State Key Laboratory of Agrobiotechnology, Beijing 100193, China; College of Biological Sciences and Rhizobia Research Center, China Agricultural University, Beijing 100193, China
| | - Wen Xin Chen
- 1 State Key Laboratory of Agrobiotechnology, Beijing 100193, China; College of Biological Sciences and Rhizobia Research Center, China Agricultural University, Beijing 100193, China
| | - Bao Lin Guo
- 3 Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
| | - Wen Feng Chen
- 1 State Key Laboratory of Agrobiotechnology, Beijing 100193, China; College of Biological Sciences and Rhizobia Research Center, China Agricultural University, Beijing 100193, China
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Xu KW, Zou L, Penttinen P, Wang K, Heng NN, Zhang XP, Chen Q, Zhao K, Chen YX. Symbiotic effectiveness and phylogeny of rhizobia isolated from faba bean (Vicia faba L.) in Sichuan hilly areas, China. Syst Appl Microbiol 2015; 38:515-23. [DOI: 10.1016/j.syapm.2015.06.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 06/19/2015] [Accepted: 06/22/2015] [Indexed: 11/26/2022]
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9
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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]
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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
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Tardiphaga robiniae gen. nov., sp. nov., a new genus in the family Bradyrhizobiaceae isolated from Robinia pseudoacacia in Flanders (Belgium). Syst Appl Microbiol 2012; 35:205-14. [PMID: 22444281 DOI: 10.1016/j.syapm.2012.02.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Revised: 01/24/2012] [Accepted: 02/11/2012] [Indexed: 11/20/2022]
Abstract
Gram-negative, rod-shaped bacteria were isolated from Robinia pseudoacacia root nodules. On the basis of the 16S rRNA gene phylogeny, they are closely related to Bradyrhizobium, Rhodopseudomonas and Nitrobacter species (97% sequence similarity), belonging to the class Alphaproteobacteria and family Bradyrhizobiaceae. The results of physiological and biochemical tests together with sequence analysis of housekeeping genes (atpD, dnaK, gyrB, recA and rpoB) allowed differentiation of this group from other validly published Bradyrhizobiaceae genera. NodA, nodC and nifH genes could not be amplified. On the basis of genotypic and phenotypic data, these organisms represent a novel genus and species for which the name Tardiphaga robiniae gen. nov., sp. nov. (LMG 26467(T)=CCUG 61473(T)), is proposed.
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Qin W, Deng ZS, Xu L, Wang NN, Wei GH. Rhizobium helanshanense sp. nov., a bacterium that nodulates Sphaerophysa salsula (Pall.) DC. in China. Arch Microbiol 2011; 194:371-8. [DOI: 10.1007/s00203-011-0766-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 10/21/2011] [Accepted: 10/24/2011] [Indexed: 11/29/2022]
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Symbiotic effectiveness of rhizobial mutualists varies in interactions with native Australian legume genera. PLoS One 2011; 6:e23545. [PMID: 21887270 PMCID: PMC3162553 DOI: 10.1371/journal.pone.0023545] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Accepted: 07/19/2011] [Indexed: 11/30/2022] Open
Abstract
Background and Objectives Interactions between plants and beneficial soil organisms (e.g. rhizobial bacteria, mycorrhizal fungi) are models for investigating the ecological impacts of such associations in plant communities, and the evolution and maintenance of variation in mutualisms (e.g. host specificity and the level of benefits provided). With relatively few exceptions, variation in symbiotic effectiveness across wild host species is largely unexplored. Methods We evaluated these associations using representatives of several legume genera which commonly co-occur in natural ecosystems in south-eastern Australia and an extensive set of rhizobial strains isolated from these hosts. These strains had been previously assigned to specific phylotypes on the basis of molecular analyses. In the first of two inoculation experiments, the growth responses of each host species was evaluated with rhizobial strains isolated from that species. The second experiment assessed performance across genera and the extent of host specificity using a subset of these strains. Results While host growth responses to their own (sympatric) isolates varied considerably, rhizobial phylotype was a significant predictor of symbiotic performance, indicating that bacterial species designations on the basis of molecular markers have ecological importance. Hosts responded in qualitatively different ways to sympatric and allopatric strains of rhizobia, ranging from species with a clear preference for their own strains, to those that were broad generalists, through to species that grew significantly better with allopatric strains. Conclusion Theory has focused on trade-offs between the provision of benefits and symbiont competitive ability that might explain the persistence of less beneficial strains. However, differences in performance among co-occurring host species could also drive such patterns. Our results thus highlight the likely importance of plant community structure in maintaining variation in symbiotic effectiveness.
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Genetic diversity of root nodule bacteria nodulating Lotus corniculatus and Anthyllis vulneraria in Sweden. Syst Appl Microbiol 2011; 34:267-75. [DOI: 10.1016/j.syapm.2011.01.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 01/20/2011] [Accepted: 01/24/2011] [Indexed: 11/24/2022]
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Wu LJ, Wang HQ, Wang ET, Chen WX, Tian CF. Genetic diversity of nodulating and non-nodulating rhizobia associated with wild soybean (Glycine soja Sieb. & Zucc.) in different ecoregions of China. FEMS Microbiol Ecol 2011; 76:439-50. [PMID: 21303397 DOI: 10.1111/j.1574-6941.2011.01064.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
A total of 99 bacterial isolates that originated from root nodules of Glycine soja were characterized with restriction analyses of amplified 16S ribosomal DNA and 16S-23S rDNA intergenic spacers (ITS), and sequence analyses of 16S rRNA, rpoB, atpD, recA and nodC genes. When tested for nodulation of G. soja, 72 of the isolates were effective symbionts, and these belonged to five species: Bradyrhizobium japonicum, Bradyrhizobium elkanii, Bradyrhizobium yuanmingense, Bradyrhizobium liaoningense and Sinorhizobium fredii. All of these, except some B. yuanmingense strains, also formed effective nodules on the domesticated soybean Glycine max. The remaining 27 isolates did not nodulate either host, but were identified as Rhizobium. Phylogeny nodC in the G. soja symbionts suggested that this symbiosis gene was mainly maintained by vertical gene transfer. Different nodC sublineages and rrs-ITS clusters reflected the geographic origins of isolates in this study.
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Affiliation(s)
- Li Juan Wu
- State Key Laboratory of Agro-Biotechnology, Department of Microbiology and Immunology, College of Biological Sciences, China Agricultural University, Beijing, China
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Li QQ, Wang ET, Zhang YZ, Zhang YM, Tian CF, Sui XH, Chen WF, Chen WX. Diversity and biogeography of rhizobia isolated from root nodules of Glycine max grown in Hebei Province, China. MICROBIAL ECOLOGY 2011; 61:917-31. [PMID: 21340735 DOI: 10.1007/s00248-011-9820-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Accepted: 02/03/2011] [Indexed: 05/30/2023]
Abstract
A total of 215 rhizobial strains were isolated and analyzed with 16S rRNA gene, 16S-23S intergenic spacer, housekeeping genes atpD, recA, and glnII, and symbiotic genes nifH and nodC to understand the genetic diversity of soybean rhizobia in Hebei province, China. All the strains except one were symbiotic bacteria classified into nine genospecies in the genera of Bradyrhizobium and Sinorhizobium. Surveys on the distribution of these rhizobia in different regions showed that Bradyrhizobium japonicum and Bradyrhizobium elkanii strains were found only in neutral to slightly alkaline soils whereas Bradyrhizobium yuanmingense, Bradyrhizobium liaoningense-related strains and strains of five Sinorhizobium genospecies were found in alkaline-saline soils. Correspondence and canonical correspondence analyses on the relationship of rhizobial distribution and their soil characteristics reveal that high soil pH, electrical conductivity, and potassium content favor distribution of the B. yuanmingense and the five Sinorhizobium species but inhibit B. japonicum and B. elkanii. High contents of available phosphorus and organic matters benefit Sinorhizobium fredii and B. liaoningense-related strains and inhibit the others groups mentioned above. The symbiotic gene (nifH and nodC) lineages among B. elkanii, B. japonicum, B. yuanmingense, and Sinorhizobium spp. were observed in the strains, signifying that vertical gene transfer was the main mechanism to maintain these genes in the soybean rhizobia. However, lateral transfer of symbiotic genes commonly in Sinorhizobium spp. and rarely in Bradyrhizobium spp. was also detected. These results showed the genetic diversity, the biogeography, and the soil determinant factors of soybean rhizobia in Hebei province of China.
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Affiliation(s)
- Qin Qin Li
- State Key Laboratory of Agrobiotechnology/College of Biological Sciences, China Agricultural University, Beijing 100193, China
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Chang YL, Wang ET, Sui XH, Zhang XX, Chen WX. Molecular diversity and phylogeny of rhizobia associated with Lablab purpureus (Linn.) grown in Southern China. Syst Appl Microbiol 2011; 34:276-84. [PMID: 21498018 DOI: 10.1016/j.syapm.2010.12.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 12/17/2010] [Accepted: 12/20/2010] [Indexed: 11/26/2022]
Abstract
As an introduced plant, Lablab purpureus serves as a vegetable, herbal medicine, forage and green manure in China. In order to investigate the diversity of rhizobia associated with this plant, a total of 49 rhizobial strains isolated from ten provinces of Southern China were analyzed in the present study with restriction fragment length polymorphism and/or sequence analyses of housekeeping genes (16S rRNA, IGS, atpD, glnII and recA) and symbiotic genes (nifH and nodC). The results defined the L. purpureus rhizobia as 24 IGS-types within 15 rrs-IGS clusters or genomic species belonging to Bradyrhizobium, Rhizobium, Ensifer (synonym of Sinorhizobium) and Mesorhizobium. Bradyrhizobium spp. (81.6%) were the most abundant isolates, half of which were B. elkanii. Most of these rhizobia induced nodules on L. purpureus, but symbiotic genes were only amplified from the Bradyrhizobium and Rhizobium leguminosarum strains. The nodC and nifH phylogenetic trees defined five lineages corresponding to B. yuanmingense, B. japonicum, B. elkanii, B. jicamae and R. leguminosarum. The coherence of housekeeping and symbiotic gene phylogenies demonstrated that the symbiotic genes of the Lablab rhizobia were maintained mainly through vertical transfer. However, a putative lateral transfer of symbiotic genes was found in the B. liaoningense strain. The results in the present study clearly revealed that L. purpureus was a promiscuous host that formed nodules with diverse rhizobia, mainly Bradyrhizobium species, harboring different symbiotic genes.
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Affiliation(s)
- Yue Li Chang
- State Key Laboratory for Agro-Biotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
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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.
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Affiliation(s)
- Zhen Shan Deng
- College of Life Sciences, Shaanxi Key Laboratory of Molecular Biology for Agriculture, Northwest A & F University, Yangling, Shaanxi, China
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Diverse rhizobia associated with Sophora alopecuroides grown in different regions of Loess Plateau in China. Syst Appl Microbiol 2010; 33:468-77. [DOI: 10.1016/j.syapm.2010.08.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2010] [Revised: 07/29/2010] [Accepted: 08/02/2010] [Indexed: 11/22/2022]
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Aoki S, Kondo T, Prévost D, Nakata S, Kajita T, Ito M. Genotypic and phenotypic diversity of rhizobia isolated from Lathyrus japonicus indigenous to Japan. Syst Appl Microbiol 2010; 33:383-97. [DOI: 10.1016/j.syapm.2010.07.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Revised: 07/08/2010] [Accepted: 07/12/2010] [Indexed: 11/30/2022]
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Mierzwa B, Wdowiak-Wróbel S, Kalita M, Gnat S, Małek W. Insight into the evolutionary history of symbiotic genes of Robinia pseudoacacia rhizobia deriving from Poland and Japan. Arch Microbiol 2010; 192:341-50. [DOI: 10.1007/s00203-010-0561-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 01/25/2010] [Accepted: 03/02/2010] [Indexed: 11/29/2022]
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Han TX, Tian CF, Wang ET, Chen WX. Associations among rhizobial chromosomal background, nod genes, and host plants based on the analysis of symbiosis of indigenous rhizobia and wild legumes native to Xinjiang. MICROBIAL ECOLOGY 2010; 59:311-323. [PMID: 19730765 DOI: 10.1007/s00248-009-9577-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Accepted: 08/07/2009] [Indexed: 05/28/2023]
Abstract
The associations among rhizobia chromosomal background, nodulation genes, legume plants, and geographical regions are very attractive but still unclear. To address this question, we analyzed the interactions among rhizobia rDNA genotypes, nodC genotypes, legume genera, as well as geographical regions in the present study. Complex relationships were observed among them, which may be the genuine nature of their associations. The statistical analyses indicate that legume plant is the key factor shaping both rhizobia genetic and symbiotic diversity. In the most cases of our results, the nodC lineages are clearly associated with rhizobial genomic species, demonstrating that nodulation genes have co-evolved with chromosomal background, though the lateral transfer of nodulation genes occurred in some cases in a minority. Our results also support the hypothesis that the endemic rhizobial populations to a certain geographical area prefer to have a wide spectrum of hosts, which might be an important event for the success of both legumes and rhizobia in an isolated region.
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Affiliation(s)
- Tian Xu Han
- State Key Laboratory of Agrobiotechnology, Key laboratory of Agro-Microbial Resource and Application, Ministry of Agriculture, College of Biological Sciences, China Agricultural University, Beijing 100094, China
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Mierzwa B, Wdowiak-Wróbel S, Małek W. Robinia pseudoacacia in Poland and Japan is nodulated by Mesorhizobium amorphae strains. Antonie Van Leeuwenhoek 2010; 97:351-61. [DOI: 10.1007/s10482-010-9414-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Accepted: 01/08/2010] [Indexed: 11/30/2022]
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Lu YL, Chen WF, Wang ET, Guan SH, Yan XR, Chen WX. Genetic diversity and biogeography of rhizobia associated with Caragana species in three ecological regions of China. Syst Appl Microbiol 2009; 32:351-61. [DOI: 10.1016/j.syapm.2008.10.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 10/03/2008] [Accepted: 10/09/2008] [Indexed: 11/17/2022]
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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]
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Wei G, Chen W, Zhu W, Chen C, Young JPW, Bontemps C. Invasive Robinia pseudoacacia in China is nodulated by Mesorhizobium and Sinorhizobium species that share similar nodulation genes with native American symbionts. FEMS Microbiol Ecol 2009; 68:320-8. [DOI: 10.1111/j.1574-6941.2009.00673.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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