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https://read.qxmd.com/read/38529060/editorial-plant-rhizobia-symbiosis-and-nitrogen-fixation-in-legumes
#1
EDITORIAL
Senjuti Sinharoy, Chang-Fu Tian, Jesús Montiel
No abstract text is available yet for this article.
2024: Frontiers in Plant Science
https://read.qxmd.com/read/38505702/determination-of-abundance-and-symbiotic-effectiveness-of-native-rhizobia-nodulating-soybean-and-other-legumes-in-rwanda
#2
JOURNAL ARTICLE
Felix Nzeyimana, Richard N Onwonga, Fredrick O Ayuke, George N Chemining'wa, Nsharwasi L Nabahungu, Joseph Bigirimana, Umuhoza K Noella Josiane
Rhizobia diversity in the rhizosphere is one of the key promoters of biological nitrogen fixation between host legumes and microsymbionts, although related complex interaction may depend on various factors. This research was intended to assess the abundance of indigenous rhizobia isolates under various soil conditions, as well as their effectiveness to nodulate legumes such as soybeans. Factors such as soil properties and legume species influence the volume and symbiotic effectiveness of native rhizobia to nodulate crop legumes...
April 2024: Plant Environ Interact
https://read.qxmd.com/read/38501779/complete-genome-sequence-of-bradyrhizobium-ottawaense-strain-miae-01942-isolated-from-soybean-nodules-grown-in-antibiotic-amended-soil
#3
JOURNAL ARTICLE
Andrew Scott, Edward Topp, Cécile Revellin, Alain Hartmann, Michael Fruci
Bradyrhizobium ottawaense MIAE 01942 is a symbiotic nitrogen-fixing bacterium isolated from the root nodules of soybeans grown in agricultural soils amended with veterinary antibiotics. The genome consists of a single 8.45 Mb circular chromosome that harbors genes involved in nitrogen fixation, denitrification, and antibiotic and metal resistance.
March 19, 2024: Microbiology Resource Announcements
https://read.qxmd.com/read/38491088/symbiotic-efficiency-of-rhizobium-leguminosarum-sv-trifolii-strains-originating-from-the-subpolar-and-temperate-climate-regions
#4
JOURNAL ARTICLE
Monika Janczarek, Marta Kozieł, Paulina Adamczyk, Katarzyna Buczek, Michał Kalita, Anna Gromada, Aleksandra Mordzińska-Rak, Cezary Polakowski, Andrzej Bieganowski
Red clover (Trifolium pratense L.) is a forage legume cultivated worldwide. This plant is capable of establishing a nitrogen-fixing symbiosis with Rhizobium leguminosarum symbiovar trifolii strains. To date, no comparative analysis of the symbiotic properties and heterogeneity of T. pratense microsymbionts derived from two distinct geographic regions has been performed. In this study, the symbiotic properties of strains originating from the subpolar and temperate climate zones in a wide range of temperatures (10-25 °C) have been characterized...
March 15, 2024: Scientific Reports
https://read.qxmd.com/read/38474164/autophagy-and-symbiosis-membranes-er-and-speculations
#5
REVIEW
Maria G Semenova, Alekandra N Petina, Elena E Fedorova
The interaction of plants and soil bacteria rhizobia leads to the formation of root nodule symbiosis. The intracellular form of rhizobia, the symbiosomes, are able to perform the nitrogen fixation by converting atmospheric dinitrogen into ammonia, which is available for plants. The symbiosis involves the resource sharing between two partners, but this exchange does not include equivalence, which can lead to resource scarcity and stress responses of one of the partners. In this review, we analyze the possible involvement of the autophagy pathway in the process of the maintenance of the nitrogen-fixing bacteria intracellular colony and the changes in the endomembrane system of the host cell...
March 2, 2024: International Journal of Molecular Sciences
https://read.qxmd.com/read/38462552/exploring-the-role-of-symbiotic-modifier-peptidases-in-the-legume%C3%A2-%C3%A2-rhizobium-symbiosis
#6
REVIEW
Prithwi Ghosh, Joydeep Chakraborty
Legumes can establish a mutual association with soil-derived nitrogen-fixing bacteria called 'rhizobia' forming lateral root organs called root nodules. Rhizobia inside the root nodules get transformed into 'bacteroids' that can fix atmospheric nitrogen to ammonia for host plants in return for nutrients and shelter. A substantial 200 million tons of nitrogen is fixed annually through biological nitrogen fixation. Consequently, the symbiotic mechanism of nitrogen fixation is utilized worldwide for sustainable agriculture and plays a crucial role in the Earth's ecosystem...
March 11, 2024: Archives of Microbiology
https://read.qxmd.com/read/38457346/the-pathogenesis-related-protein-prp1-negatively-regulates-root-nodule-symbiosis-in-lotus-japonicus
#7
JOURNAL ARTICLE
Hao Li, Yajuan Ou, Kui Huang, Zhongming Zhang, Yangrong Cao, Hui Zhu
The legume-rhizobium symbiosis represents as a unique model within the realm of plant-microbe interactions. Unlike typical cases of pathogenic invasion, the infection of rhizobia and their residence within symbiotic cells do not elicit a noticeable immune response in plants. Nevertheless, there is still much to uncover regarding the mechanisms through which plant immunity influences rhizobia symbiosis. In this study, we identify an important player in this intricate interplay: the Lotus japonicus PRP1, which serves as a positive regulator of plant immunity but also exhibits the capacity to decrease rhizobial colonization and nitrogen fixation within nodules...
March 8, 2024: Journal of Experimental Botany
https://read.qxmd.com/read/38450407/high-frankia-abundance-and-low-diversity-of-microbial-community-are-associated-with-nodulation-specificity-and-stability-of-sea-buckthorn-root-nodule
#8
JOURNAL ARTICLE
Hong Liu, Bingbing Ni, Aiguo Duan, Caiyun He, Jianguo Zhang
INTRODUCTION: Actinorhizal symbioses are gaining attention due to the importance of symbiotic nitrogen fixation in sustainable agriculture. Sea buckthorn ( Hippophae L.) is an important actinorhizal plant, yet research on the microbial community and nitrogen cycling in its nodules is limited. In addition, the influence of environmental differences on the microbial community of sea buckthorn nodules and whether there is a single nitrogen-fixing actinomycete species in the nodules are still unknown...
2024: Frontiers in Plant Science
https://read.qxmd.com/read/38445860/hopanoid-lipids-promote-soybean-bradyrhizobium-symbiosis
#9
JOURNAL ARTICLE
Huiqiao Pan, Ashley Shim, Matthew B Lubin, Brittany J Belin
The symbioses between leguminous plants and nitrogen-fixing bacteria known as rhizobia are well known for promoting plant growth and sustainably increasing soil nitrogen. Recent evidence indicates that hopanoids, a family of steroid-like lipids, promote Bradyrhizobium symbioses with tropical legumes. To characterize hopanoids in Bradyrhizobium symbiosis with soybean, we validated a recently published cumate-inducible hopanoid mutant of Bradyrhizobium diazoefficiens USDA110, Pcu- shc ::∆ shc . GC-MS analysis showed that this strain does not produce hopanoids without cumate induction, and under this condition, is impaired in growth in rich medium and under osmotic, temperature, and pH stress...
March 6, 2024: MBio
https://read.qxmd.com/read/38438136/control-of-root-nodule-formation-ensures-sufficient-shoot-water-availability-in-lotus-japonicus
#10
JOURNAL ARTICLE
Kensuke Kawade, Daisuke Sugiura, Akira Oikawa, Masayoshi Kawaguchi
Leguminous plants provide carbon to symbiotic rhizobia in root nodules to fuel the energy-consuming process of nitrogen fixation. The carbon investment pattern from the acquired sources is crucial for shaping the growth regime of the host plants. The autoregulation of nodulation (AON) signaling pathway tightly regulates the number of nodules that form. AON disruption leads to excessive nodule formation and stunted shoot growth. However, the physiological role of AON in adjusting the carbon investment pattern is unknown...
March 4, 2024: Plant Physiology
https://read.qxmd.com/read/38427093/ciceribacter-sichuanensis-sp-nov-a-plant-growth-promoting-rhizobacterium-isolated-from-root-nodules-of-soybean-in-sichuan-china
#11
JOURNAL ARTICLE
Yanqin Zhang, Yuanxue Chen, Petri Penttinen, Xing Wang, Ying Quan, Licheng Wen, Miao Yang, Xiaoping Zhang, Qiang Chen, Lingzi Zhang, Junjie Zhang, Xiaoxia Zhang, Kaiwei Xu
The fast-growing rhizobia-like strains S101T and S153, isolated from root nodules of soybean (Glycine max) in Sichuan, People's Republic of China, underwent characterization using a polyphasic taxonomy approach. The strains exhibited growth at 20-40 °C (optimum, 28 °C), pH 4.0-10.0 (optimum, pH 7.0) and up to 2.0% (w/v) NaCl (optimum, 0.01%) on Yeast Mannitol Agar plates. The 16S rRNA gene of strain S101T showed 98.4% sequence similarity to the closest type strain, Ciceribacter daejeonense L61T ...
March 1, 2024: Antonie Van Leeuwenhoek
https://read.qxmd.com/read/38426790/identification-and-characterization-of-the-tetr-family-transcriptional-regulator-nfft-in-rhizobium-johnstonii
#12
JOURNAL ARTICLE
Xiaofang Li, Zhangqun Li, Yajuan Wei, Zirui Chen, Shijie Xie
Symbiotic nitrogen fixation (SNF) by rhizobia is not only the main natural bionitrogen-source for organisms but also a green process leveraged to increase the fertility of soil for agricultural production. However, an insufficient understanding of the regulatory mechanism of SNF hinders its practical application. During SNF, nifA-fixA signaling is essential for the biosynthesis of nitrogenases and electron transfer chain proteins. In the present study, the TetR regulator NffT, whose mutation increased fixA expression, was discovered through a fixA -promoter-β-glucuronidase fusion assay performed with Rhizobium johnstonii ...
March 1, 2024: Applied and Environmental Microbiology
https://read.qxmd.com/read/38424094/occurrence-and-diversity-of-stem-nodulation-in-aeschynomene-and-sesbania-legumes-from-wetlands-of-madagascar
#13
JOURNAL ARTICLE
Faustin F Manantsoa, Marrino F Rakotoarisoa, Clémence Chaintreuil, Adamson T E Razakatiana, Frédéric Gressent, Marjorie Pervent, Mickaël Bourge, Martial D Andrianandrasana, Nico Nouwen, Herizo Randriambanona, Heriniaina Ramanankierana, Jean-François Arrighi
Legumes have the ability to establish a nitrogen-fixing symbiosis with soil rhizobia that they house in specific organs, the nodules. In most rhizobium-legume interactions, nodulation occurs on the root. However, certain tropical legumes growing in wetlands possess a unique trait: the capacity to form rhizobia-harbouring nodules on the stem. Despite the originality of the stem nodulation process, its occurrence and diversity in waterlogging-tolerant legumes remains underexplored, impeding a comprehensive analysis of its genetics and biology...
February 29, 2024: Scientific Reports
https://read.qxmd.com/read/38402014/energy-sensors-emerging-regulators-of-symbiotic-nitrogen-fixation
#14
JOURNAL ARTICLE
Xiaolong Ke, Xuelu Wang
Legume-rhizobium symbiotic nitrogen fixation is a highly energy-consuming process. Recent studies demonstrate that nodule-specific energy sensors play important roles in modulating nodule nitrogen fixation capacity. This opens a new field in the energy regulation of symbiotic nitrogen fixation that can provide insights into designing leguminous crops with efficient nitrogen fixation.
February 23, 2024: Trends in Plant Science
https://read.qxmd.com/read/38399740/genomic-insights-into-the-symbiotic-and-plant-growth-promoting-traits-of-candidatus-phyllobacterium-onerii-sp-nov-isolated-from-endemic-astragalus-flavescens
#15
JOURNAL ARTICLE
Asiye Esra Eren Eroğlu, Volkan Eroğlu, İhsan Yaşa
A novel strain of Gram-negative, rod-shaped aerobic bacteria, identified as IY22, was isolated from the root nodules of Astragalus flavescens . The analysis of the 16S rDNA and recA (recombinase A) gene sequences indicated that the strain belongs to the genus Phyllobacterium . During the phylogenetic analysis, it was found that strain IY22 is closely related to P. trifolii strain PETP02T and P. bourgognense strain STM 201T . The genome of IY22 was determined to be 6,010,116 base pairs long with a DNA G+C ratio of 56...
February 6, 2024: Microorganisms
https://read.qxmd.com/read/38392314/bacterial-endophytes-from-legumes-native-to-arid-environments-are-promising-tools-to-improve-mesorhizobium-chickpea-symbiosis-under-salinity
#16
JOURNAL ARTICLE
Roukaya Ben Gaied, Imed Sbissi, Mohamed Tarhouni, Clarisse Brígido
Symbiotic nitrogen fixation is a major contributor of N in agricultural ecosystems, but the establishment of legume-rhizobium symbiosis is highly affected by soil salinity. Our interest is focused on the use of non-rhizobial endophytes to assist the symbiosis between chickpea and its microsymbiont under salinity to avoid loss of production and fertility. Our aims were (1) to investigate the impact of salinity on both symbiotic partners; including on early events of the Mesorhizobium -chickpea symbiosis, and (2) to evaluate the potential of four non-rhizobial endophytes isolated from legumes native to arid regions ( Phyllobacterium salinisoli , P...
February 3, 2024: Biology
https://read.qxmd.com/read/38380096/-pseudomonas-chlororaphis-irhb3-assemblies-beneficial-microbes-and-activates-ja-mediated-resistance-to-promote-nutrient-utilization-and-inhibit-pathogen-attack
#17
JOURNAL ARTICLE
Dengqin Wei, Dan Zhu, Yunfeng Zhang, Zheng Yang, Yu Hu, Chun Song, Wenyu Yang, Xiaoli Chang
INTRODUCTION: The rhizosphere microbiome is critical to plant health and resistance. PGPR are well known as plant-beneficial bacteria and generally regulate nutrient utilization as well as plant responses to environmental stimuli. In our previous work, one typical PGPR strain, Pseudomonas chlororaphis IRHB3, isolated from the soybean rhizosphere, had positive impacts on soil-borne disease suppression and growth promotion in the greenhouse, but its biocontrol mechanism and application in the field are not unclear...
2024: Frontiers in Microbiology
https://read.qxmd.com/read/38365913/vapc10-toxin-of-the-legume-symbiont-sinorhizobium-meliloti-targets-trnaser-and-controls-intracellular-lifestyle
#18
JOURNAL ARTICLE
Camille Syska, Aurélie Kiers, Corinne Rancurel, Marc Bailly-Bechet, Justine Lipuma, Geneviève Alloing, Isabelle Garcia, Laurence Dupont
The soil bacterium Sinorhizobium meliloti can establish a nitrogen fixing symbiosis with the model legume Medicago truncatula. The rhizobia induce the formation of a specialized root organ called nodule, where they differentiate into bacteroids and reduce atmospheric nitrogen into ammonia. Little is known on the mechanisms involved in nodule senescence onset and in bacteroid survival inside the infected plant cells. Whereas Toxin-Antitoxin (TA) systems have been shown to promote intracellular survival within host cells in human pathogenic bacteria, their role in symbiotic bacteria was rarely investigated...
January 29, 2024: ISME Journal
https://read.qxmd.com/read/38365250/dynamic-nitrogen-fixation-in-an-aerobic-endophyte-of-populus
#19
JOURNAL ARTICLE
Andrew W Sher, Jayde A Aufrecht, Daisy Herrera, Amy E Zimmerman, Young-Mo Kim, Nathalie Munoz, Jesse B Trejo, Vanessa L Paurus, John B Cliff, Dehong Hu, William B Chrisler, Robert J Tournay, Emma Gomez-Rivas, Galya Orr, Amir H Ahkami, Sharon L Doty
Biological nitrogen fixation by microbial diazotrophs can contribute significantly to nitrogen availability in non-nodulating plant species. In this study of molecular mechanisms and gene expression relating to biological nitrogen fixation, the aerobic nitrogen-fixing endophyte Burkholderia vietnamiensis, strain WPB, isolated from Populus trichocarpa served as a model for endophyte-poplar interactions. Nitrogen-fixing activity was observed to be dynamic on nitrogen-free medium with a subset of colonies growing to form robust, raised globular like structures...
January 8, 2024: ISME Journal
https://read.qxmd.com/read/38362593/natural-variability-and-heritability-of-root-nodulation-traits-in-chickpea-cicer-arietinum-l-minicore
#20
JOURNAL ARTICLE
Renu Verma, P S Shanmugavadivel, Naveen Kumar Arora, Murugesan Senthilkumar
UNLABELLED: The existence of large variations for nodulation traits in chickpea minicore was revealed and genetic materials for beneficial biological nitrogen fixation (BNF) traits like early nodulation, high nodulation, and delayed nodule senescence were identified. Early-nodulating genotypes viz. ICC12968, ICC7867, ICC13816, ICC867, ICC15264, ICC15510, and ICC283 produced > 10 nodule number per plant (NNPP) at 15 as well as 30 days after sowing (DAS). Maximum of 36 NNPP at stage 3 i...
March 2024: 3 Biotech
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