Article
Agronomy
Md. Rakibul Islam, Limon Biswas, S. M. Nasim, Md Azizul Islam, Md Anwarul Haque, A. K. M. Nazmul Huda
Summary: Plant scientists are concerned about the toxicity of metals and the strategies to detoxify them due to their accumulation in plants and entry into the food chain. This study investigated the defense mechanism of chickpea against chromium toxicity. The results showed that chickpea roots retained excess chromium through adsorption on the root surface, preventing its translocation to shoots. Functional groups induced by the roots played a role in binding chromium cations. Additionally, antioxidant enzyme activities contributed to the removal of oxidative stress in roots.
Review
Plant Sciences
Justin P. Hawkins, Ivan J. Oresnik
Summary: The interaction between bacteria and plants can be positive, negative, or neutral. The rhizobium-legume interaction is a well-studied positive interaction model. This review discusses how rhizobia tolerate stresses and how these stress tolerance mechanisms play a role in signal exchange between rhizobia and legumes.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Ginaini Grazielli Doin de Moura, Saida Mouffok, Nil Gaudu, Anne-Claire Cazale, Marine Milhes, Tabatha Bulach, Sophie Valiere, David Roche, Jean-Baptiste Ferdy, Catherine Masson-Boivin, Delphine Capela, Philippe Remigi
Summary: During the experimental evolution of a plant pathogenic bacterium into a legume symbiont, improved competitiveness for host entry was the main driver of fast adaptation, outweighing adaptation to within-host proliferation. Continuous accumulation of new mutations and sequential sweeps of mutations were observed, with multiple adaptive mutations co-occurring in the same cohort. Selective bottlenecks before within-host proliferation and after the hypermutagenesis phase were found to alter the relative influence of selective pressures during bacterial adaptation to multistep infection processes.
MOLECULAR BIOLOGY AND EVOLUTION
(2023)
Article
Agronomy
N. J. Barrow, Subhechhya Ali Parvin, Abhijit Debnath
Summary: Chickpea's ability to obtain phosphorus varies with pH levels, and low pH significantly inhibits phosphorus uptake, while having minimal impact on aluminum toxicity.
Article
Multidisciplinary Sciences
Mohammad Imran Mir, B. Kiran Kumar, Subramaniam Gopalakrishnan, Srinivas Vadlamudi, Bee Hameeda
Summary: Six rhizobia-like bacterial strains isolated from the root and stem nodules of leguminous plants were found to promote growth in chickpeas through various mechanisms such as production of beneficial metabolites and nutrient solubilization. Despite variations in in-vitro performance, the strains showed potential for enhancing plant growth and nitrogen fixation, indicating their promising role in improving crop yields.
Article
Microbiology
Carolin C. M. Schulte, Vinoy K. Ramachandran, Antonis Papachristodoulou, Philip S. Poole
Summary: This study reconstructed a genome-scale metabolic model for Rhizobium leguminosarum and integrated various experimental data sets to investigate the metabolic characteristics of rhizosphere bacteria, undifferentiated bacteria inside root nodules, and nitrogen-fixing bacteroids. These findings provide a framework for future experimental studies and help advance efforts to engineer novel symbioses with cereal crops for sustainable agriculture.
Article
Biochemistry & Molecular Biology
Christopher Carlson, Megan E. Frederickson
Summary: Mutualistic relationships can mask underlying conflicts of interest, and it is debated how often symbionts cheat their hosts and hosts control uncooperative symbionts. This antagonistic coevolution should result in selective sweeps or balancing selection in host and symbiont genomes. However, the genomic analyses suggest that there is little ongoing fitness conflict between legumes and rhizobia in this system.
Review
Agronomy
Sara Fahde, Said Boughribil, Badreddine Sijilmassi, Ahmed Amri
Summary: For many years, the scientific community focused on understanding how rhizobia promote the growth of legumes through nitrogen fixation. However, recent research has shown that rhizobia can also stimulate the growth of non-legume plants through various mechanisms such as hormone production, nutrient uptake improvement, pathogen control, and water regulation. This review aims to analyze the existing knowledge on how rhizobia promote the growth of non-legumes and gain new insights into their interactions.
Article
Agronomy
Q. A. Tuan Vo, Ross A. Ballard, Stephen J. Barnett, Christopher M. M. Franco
Summary: Endophytic actinobacteria isolated from chickpea roots, such as Actinomadura sp. CP84B, Microbispora sp. CP56, and Streptomyces spp. CP21A2 and CP200B, have shown potential in promoting the growth and nodulation of chickpea plants.
Review
Biotechnology & Applied Microbiology
W. F. Chen, E. T. Wang, Z. J. Ji, J. J. Zhang
Summary: Symbiotic rhizobia convert dinitrogen gas into ammonia for the host plant. Specificity exists between rhizobia and leguminous species. Nodulation specificity and efficiency are mainly determined by soil conditions and host plants.
JOURNAL OF APPLIED MICROBIOLOGY
(2021)
Review
Plant Sciences
Yanlin Ma, Rujin Chen
Summary: Nitrogen and phosphorus are essential mineral elements for plant growth and development, particularly in the symbiotic N fixation of legumes. Plants have evolved complex signaling networks to respond to phosphates and nitrates, optimizing symbiotic N fixation. Research in model organisms has provided insight into the signaling and transport processes of N and P during symbiosis.
FRONTIERS IN PLANT SCIENCE
(2021)
Review
Biochemistry & Molecular Biology
Irene Jimenez-Guerrero, Carlos Medina, Jose Maria Vinardell, Francisco Javier Ollero, Francisco Javier Lopez-Baena
Summary: Rhizobia establish a symbiotic association with legumes, forming plant nodules where they fix atmospheric nitrogen into ammonia. The type 3 secretion system (T3SS) plays a crucial role in several rhizobium-legume symbioses by injecting effectors into host cells to alter host pathways or suppress host defense responses.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Plant Sciences
Shunxin Zhou, Chanjuan Zhang, Yi Huang, Haifeng Chen, Songli Yuan, Xinan Zhou
Summary: Delaying nodule senescence in legume crops can improve crop yield and reduce nitrogen fertilizer use, but effective measures are currently lacking. The review summarized the characteristics of nodule senescence and key genes involved, as well as factors affecting nodule senescence, providing a foundation for future research.
Review
Microbiology
Albin Teulet, Alicia Camuel, Xavier Perret, Eric Giraud
Summary: The type III secretion systems (T3SSs) used by rhizobia deliver effector proteins (T3Es) inside host cells to suppress plant immunity and promote infection for nitrogen fixation. The immune system of legume hosts and the cocktail of T3Es secreted by rhizobia determine the outcome of their symbiotic interaction. Rhizobial T3Es can either reduce plant immunity and promote infection or trigger defense responses if recognized by plant receptors. Some rhizobial T3Es can also bypass nodulation factors to induce nodule formation.
ANNUAL REVIEW OF MICROBIOLOGY
(2022)
Article
Agronomy
Munazza Rafique, Muhammad Naveed, Adnan Mustafa, Saleem Akhtar, Muneeb Munawar, Sadia Kaukab, Hayssam M. Ali, Manzer H. Siddiqui, Mohamed Z. M. Salem
Summary: The combined application of Rhizobium and GA(3) has synergistic effects on the growth, yield, and nutrient contents of chickpea. Exogenous application of GA(3) (10(-5) M) combined with Rhizobium inoculation significantly enhanced nodulation, dry biomass, plant height, grain and stover yield, and chlorophyll contents in chickpea plants. This combination also led to increased bioaccumulation of macronutrients (N, P and K) in the plants.
Article
Microbiology
Aleksei Zverev, Anastasiia Kimeklis, Arina Kichko, Grigory Gladkov, Evgeny Andronov, Evgeny Abakumov
Summary: Soil restoration in anthropogenically disturbed soils is an urgent topic in ecology and nature management. The microbial community of soil plays a crucial role in this restoration process. Main soil nutrition analysis and 16S amplicon sequencing are effective methods for preliminary analysis in new locations. The analysis of abandoned soils in Northwest Europe (Russia) revealed variations in microbial communities between mature soils and dumps. pH, N, and TOC were found to be strong indicators of microbial composition.
Article
Biochemistry & Molecular Biology
Grigory Gladkov, Anastasiia K. Kimeklis, Alexey M. Afonin, Tatiana O. Lisina, Olga Orlova, Tatiana S. Aksenova, Arina A. Kichko, Alexander G. Pinaev, Evgeny E. Andronov
Summary: Recycling plant matter is a challenge that relies on efficient lignocellulose degradation. Using microbial consortia can facilitate rapid and effective decomposition of plant biomass. Different cellulolytic consortia were isolated from enrichment cultures of natural lignocellulosic substrates, and their composition and functions were analyzed. The findings suggest that enrichment cultures can provide reproducible cellulolytic consortia from various lignocellulosic substrates, with stability ensured by tight microbial relations between its components.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Editorial Material
Plant Sciences
Tatiana Matveeva, Evgeny Andronov, Ke Chen
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Vladimir K. Chebotar, Elena P. Chizhevskaya, Maria E. Baganova, Oksana Keleinikova, Oleg S. Yuzikhin, Alexander N. Zaplatkin, Olesya Khonina, Roman D. Kostitsin, Nina G. Lapenko
Summary: The aim of this research was to study the endosphere of four halophytic plants. The majority of the isolated endophytes belonged to the Bacillus sp. genus, with some strains demonstrating the ability to grow in high temperature and salt conditions. These selected strains also showed strong plant growth promoting activity and significant growth suppression of pathogenic fungi. This research suggests that these strains could be promising candidates for the development of beneficial bioinoculants for salt soil phytoremediation and mitigating salt stress in plants.
Article
Biology
Aleksei O. Zverev, Oksana N. Kurchak, Olga V. Orlova, Olga P. Onishchuk, Arina A. Kichko, Aleksander V. Eregin, Aleksey N. Naliukhin, Aleksandr G. Pinaev, Evgeny E. Andronov
Summary: Crop rotation is an effective method for restoring soil fertility. This study aims to assess the microbiological effects of crop rotation and develop long-term crop rotation schemes that consider the microbiological effects. Short-term experiments were conducted with different plant combinations, and it was found that both primary and secondary crops significantly influenced the microbial composition of soil communities.
Article
Soil Science
O. V. Orlova, A. A. Kichko, E. L. Chirak, A. O. Zverev, T. O. Lisina, E. E. Andronov
Summary: The influence of available soil organic matter on the composition and functioning of microbial community during the transformation of barley straw in the soil was studied. It was found that a decrease in the content of available organic matter caused changes in the composition of the microbial community. The taxonomic composition of the soil bacterial community was influenced by the amount of available organic matter in the soil, the addition of straw, and the incubation period.
EURASIAN SOIL SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Anastasiia K. Kimeklis, Grigory V. Gladkov, Olga V. Orlova, Alexey M. Afonin, Emma S. Gribchenko, Tatiana S. Aksenova, Arina A. Kichko, Alexander G. Pinaev, Evgeny E. Andronov
Summary: The process of straw decomposition is dynamic and is accompanied by the succession of the microbial decomposing community. The bacterial succession during straw decomposition occurred in three phases: early, middle, and late phases, each characterized by different microbial activity and diversity. The soil microbial community may act as an efficient source of cellulolytic microorganisms, and the colonization of the cellulolytic substrate occurs in several phases, each with its own taxonomic and functional profile.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Agronomy
Tatiana A. Timofeeva, Vladimir K. Chebotar, Dmitriy V. Demidov, Sofia E. Gaidukova, Irina V. Yakovleva, Anastasia M. Kamionskaya
Summary: Soil microorganisms, especially P-solubilizing microorganisms (PSMs) of the genus Bacillus, can increase the availability of phosphorus for plants. In this two-year study, the ability of PSMs to release soluble P from apatite concentrates was evaluated using ryegrass as a model plant. The combination of specific Bacillus strains and standard grinding apatite concentrate had the greatest effect on plant growth and biomass accumulation.
Article
Microbiology
Aleksei O. Zverev, Grigory V. Gladkov, Anastasiia K. Kimeklis, Arina A. Kichko, Evgeny E. Andronov, Evgeny V. Abakumov
Summary: The restoration of disturbed soils is crucial in modern ecology and soil biology, especially in northern environments where fertile land is limited. The composition and richness of microbial communities in disturbed and undisturbed soils vary, and are influenced by environmental factors and soil properties.
Article
Ecology
Evgeny Abakumov, Anastasiia Kimeklis, Grigory Gladkov, Evgeny Andronov, Evgeniya Morgun, Timur Nizamutdinov
Summary: Microbial activity plays a crucial role in soil development and formation. Active and abandoned agricultural soils in the Arctic zone are valuable resources that contribute to food security in northern regions. Reusing abandoned land for agriculture reduces environmental risks in a changing climate. Monitoring studies are needed to assess changes in soil parameters after long-term abandonment, including taxonomic diversity and physico-chemical qualities. This study evaluated the taxonomic diversity of microbiomes in abandoned and pristine soils, identifying over 30 different bacterial and archaeal phyla. The formation of a specific microbiome associated with anthropogenic influence was observed in post-agrogenic sites, with Firmicutes, Proteobacteria, and Actinobacteria being the most common types of microorganisms.
CZECH POLAR REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Evgeny Abakumov, Aleksei Zverev, Evgeny Andronov, Timur Nizamutdinov
Summary: Technogenic processes and agrodevelopment cause significant changes in soil properties. Next-generation sequencing allows detailed investigation of soil microbial composition and functions. This study explored the taxonomic diversity of natural and anthropogenically disturbed soils in Russia using next-generation sequencing. It was found that microbial communities in disturbed soils differ from natural and agrogenic soils, indicating the sensitivity of microbial communities as indicators of human impact on soil.
APPLIED SCIENCES-BASEL
(2023)
Article
Agronomy
Vladimir K. K. Chebotar, Elena P. P. Chizhevskaya, Evgeny E. E. Andronov, Nikolai I. I. Vorobyov, Oksana V. V. Keleinikova, Maria E. E. Baganova, Sergey N. N. Konovalov, Polina S. S. Filippova, Veronika N. N. Pishchik
Summary: Biomodified mineral fertilizers (BMFs) improved maize growth and productivity, with significant increases in dry matter, minerals, starch, and protein contents. The rhizosphere bacterial community showed no considerable differences after the use of BMFs compared to conventional fertilizers. However, there were differences in microbiome composition between the experimental variants and bulk soil, with higher abundance of Proteobacteria and Bacteroidetes in bulk soil. Maize was found to be the main factor shaping the microbiome composition in the rhizosphere. Overall, the application of BMFs is a promising strategy for enhancing maize yield and grain quality under field conditions.
Article
Agronomy
Evgeny V. Abakumov, Grigory V. Gladkov, Anastasiia K. Kimeklis, Evgeny E. Andronov
Summary: More than 30 years after the collapse of the Soviet Union, large areas of land have been left fallow. This study investigates the impact of different land use types and agricultural activities on the agrochemical and microbial biodiversity of the soil. The results suggest that the duration and irreversibility of agricultural activities play a key role in shaping the composition of the soil microbiome. Furthermore, the abandoned soils after 30 years of fallow were found to be intermediate between pristine natural soils and intensively cultivated soils in terms of microbial biodiversity.
Article
Multidisciplinary Sciences
A. A. Kichko, N. K. Sergaliev, E. A. Ivanova, T. I. Chernov, A. K. Kimeklis, O. V. Orlova, M. D. Kalmenov, K. M. Akhmedenov, A. G. Pinaev, N. A. Provorov, N. A. Shashkov, E. E. Andronov
Summary: A study on the soil microbiome under a burial mound in Western Kazakhstan dating from 2500 years ago reveals a significant divergence in microbial communities between buried and surface soils, attributed to diagenetic processes and mineralization. The buried microbiome shows a higher occurrence of degradation processes, indicating a deep difference between the original and buried microbiomes.
Article
Microbiology
Vladimir K. Chebotar, Maria S. Gancheva, Elena P. Chizhevskaya, Oksana V. Keleinikova, Maria E. Baganova, Alexander N. Zaplatkin, Kharon A. Husainov
Summary: In this study, we sequenced the genome of Paenibacillus amylolyticus strain W018, which was isolated from winter wheat seeds, using nanopore sequencing. The genome size was 7.07 Mb with a GC content of 45.8%, and it contained 8,190 genes.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2023)
