Article
Environmental Sciences
S. Y. Lee, Y. -Y. Lee, K. -S. Cho
Summary: In this study, a new heavy metal tolerant PGPR, Sphingomonas sp. PbM2, was isolated from maize rhizosphere. The siderophore production and 1-aminocyclopropane-1-carboxylic acid deaminase activity of PbM2 were superior to Novosphingobium sp. CuT1, while the indole-3-acetic acid productivity of PbM2 was inferior. PGPR inoculation enhanced Cu bioavailability and bioconcentration factor in HM-contaminated soil planted with maize. Soil PGP activity was significantly enhanced by PGPR inoculation, but plant growth improvement was not statistically associated. The dynamics change in bacterial communities during rhizoremediation was similar regardless of PGPR inoculation, and both inoculated PGPR and indigenous rhizobacteria contributed to Cu bioavailability and soil PGP activity.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Microbiology
Muhammad Yahya Khan, Sajid Mahmood Nadeem, Muhammad Sohaib, Muhammad Rashid Waqas, Fahad Alotaibi, Liaqat Ali, Zahir Ahmad Zahir, Fahad N. I. Al-Barakah
Summary: A study found that co-inoculation of multiple bacterial strains is more effective in promoting wheat growth under salinity stress. The multi-strain consortium of PGPR showed positive effects on wheat growth and biochemical traits, such as decreasing electrolyte leakage and increasing chlorophyll contents and K/Na ratio.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Environmental Sciences
Michael O. Eze, Volker Thiel, Grant C. Hose, Simon C. George, Rolf Daniel
Summary: This study isolated a bacterial consortium dominated by Alphaproteobacteria from soil samples at a historic oil-contaminated site in Wietze, Germany, showing potential for enhancing rhizoremediation of petroleum hydrocarbons. Inoculation of Medicago sativa with the consortium resulted in a 66% increase in plant biomass and a 91% reduction in diesel fuel hydrocarbon concentrations in the soil within 60 days. Metagenome analysis revealed the potential biotechnological applications of Acidocella aminolytica and Acidobacterium capsulatum in rhizoremediation of sites contaminated by petroleum-derived organic pollutants.
Article
Agriculture, Multidisciplinary
Chongxi Liu, Lu Bai, Peng Cao, Shanshan Li, Sheng-Xiong Huang, Jidong Wang, Lei Li, Ji Zhang, Junwei Zhao, Jia Song, Peng Sun, Yanyan Zhang, Hui Zhang, Xiaowei Guo, Xilang Yang, Xinqiu Tan, Wende Liu, Xiangjing Wang, Wensheng Xiang
Summary: Food is a basic human right, but global food security is threatened by crop production. A novel plant growth regulator (PGR) called guvermectin (GV) has been discovered, which can promote root and coleoptile growth, tillering, and early maturing in rice. GV is similar to cytokinin (CK) but functions differently. GV also shows different growth-promoting traits compared to auxin, gibberellin (GA), and brassinosteroid (BR) in Arabidopsis and rice.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Agronomy
Nidal Fahsi, Ismail Mandi, Abdelhalem Mesfioui, Latef A. Biskri, Abdelmounaaim Allaoui
Summary: The study evaluated the effects of phosphate-solubilizing bacteria isolated from Ziziphus lotus on wheat seedling growth, with E. hormaechei J146 and P. frederiksbergensis J158 showing significant improvement in nutrient absorption, particularly nitrogen and potassium.
Review
Agronomy
Xixi Ma, Jing Pan, Xian Xue, Jun Zhang, Qi Guo
Summary: Soil salinity, a primary form of land degradation in arid and semi-arid areas, has adverse effects on plant functions. Inoculation of plants with plant growth-promoting rhizobacteria (PGPR) is an environmentally friendly strategy to alleviate salt stress and improve salt tolerance. Asian nations have concentrated research efforts and established collaborative relationships, resulting in significant research outcomes. Current hot topics include halotolerant PGPR, sustainable agriculture, microbial community, and soil salinization.
Review
Microbiology
Manon Camaille, Nicolas Fabre, Christophe Clement, Essaid Ait Barka
Summary: In the coming century, agriculture is likely to face multiple challenges due to climate change and increasing human population. Drought, a major abiotic problem, limits crop growth and productivity and affects a significant portion of land. Plants use complex mechanisms to cope with water-deficit conditions and achieve optimal crop yield.
Article
Genetics & Heredity
Oluwatosin Akinola Ajibade, Elijah Kolawole Oladipo, Stanford Kwenda, Zamantungwa Khumalo, Arshad Ismail, Julius Kola Oloke, Olubukola Monisola Oyawoye, Helen Onyeaka
Summary: The full genome of Enterobacter sichuanensis AJI 2411 was sequenced in this study to unravel the molecular mechanisms underlying its plant growth promoting abilities.
Article
Microbiology
Fahad Alotaibi, Marc St-Arnaud, Mohamed Hijri
Summary: This study identified rhizobacteria that promote plant growth and have the ability to degrade hydrocarbons through screening and genetic characterization. These bacteria have the potential for remediation of petroleum hydrocarbon-contaminated soils.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Plant Sciences
Swapnil Sapre, Iti Gontia-Mishra, Sharad Tiwari
Summary: The study demonstrated that plant growth-promoting rhizobacteria (PGPR) improved the growth parameters of pea seedlings under salinity stress, with PGPR strain IG 27 showing better performance. Additionally, PGPR inoculation modulated biochemical parameters and reduced electrolyte leakage and H2O2 content under saline conditions, ultimately enhancing plant growth and yield in field trials with 100 mM NaCl stress.
JOURNAL OF PLANT GROWTH REGULATION
(2022)
Review
Agronomy
Naseer Ullah, Allah Ditta, Muhammad Imtiaz, Xiaomin Li, Amin Ullah Jan, Sajid Mehmood, Muhammad Shahid Rizwan, Muhammad Rizwan
Summary: According to research, compost, biochar, and plant growth-promoting rhizobacteria can collaborate to alleviate drought stress and enhance plant growth and productivity. Compost and biochar improve soil conditions, while plant growth-promoting rhizobacteria help increase plants' resistance to drought.
JOURNAL OF AGRONOMY AND CROP SCIENCE
(2021)
Article
Agriculture, Multidisciplinary
Augustine T. Zvinavashe, Ilham Mardad, Manal Mhada, Lamfeddal Kouisni, Benedetto Marelli
Summary: New technologies are being sought to enhance soil biodiversity and increase crop production while reducing the use of scarce resources to mitigate threats posed by climate change, population growth, and desertification. Challenges still remain in facilitating the delivery of plant-growth-promoting bacteria in the soil, including survival, precise delivery, competition with indigenous soil microorganisms, and soil structure.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Review
Plant Sciences
Kailash Chand Kumawat, Barkha Sharma, Sharon Nagpal, Ajay Kumar, Shalini Tiwari, Ramakrishnan Madhavan Nair
Summary: Soil salinity, caused by the changing climate, has become a serious problem worldwide, resulting in damaged soil quality, reduced agricultural production, and decreasing land areas, which has a negative impact on the national economy. Halo-tolerant plant growth-promoting rhizo-microbiomes (PGPRs) are evaluated as excellent agents in controlling biotic-abiotic stresses and promoting crop productivity in salinity-affected agriculture. PGPR-assisted modern agriculture practices have emerged as a green strategy to ensure sustainable farming and mitigate salinity-related stresses. The regulation of PGPR-induced signaling pathways and the application of gene editing tools like CRISPR can contribute to improved plant resistance and adaptability under climate change conditions. The utilization of omics technologies can also enhance crop yields in a sustainable manner, ultimately leading to improved vitality. However, the challenges of crop specificity, acceptance by farmers, and legal regulations need to be addressed for product commercialization in response to climate change.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agriculture, Multidisciplinary
Joanna Swiatczak, Agnieszka Kalwasinska, Anna Wojciechowska, Maria Swiontek Brzezinska
Summary: This study comprehensively characterized Brevibacillus laterosporus K75 and found that it significantly promotes maize growth. This research is important for finding safer alternatives to harmful pesticides.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Agricultural Engineering
Ning Li, Jie Wen, Ruohong Wu, Dongnan Hu, Ling Zhang, Wenyuan Zhang, Manyun Zhang
Summary: Understanding the effects of plant growth-promoting rhizobacteria (PGPR) on Moso bamboo growth, soil nutrient, and microbial community is important for improving Moso bamboo growth. This study established an experiment to quantify the effects of PGPR inoculation on Moso bamboo growth. The results showed that PGPR inoculations significantly increased Moso bamboo biomass, improved soil nutrient content and enzyme activity, increased soil microbial diversity, and stabilized the microbial community. The functional genes related to phosphorus solubilization played a substantial role in activating soil phosphorus. Overall, the applications of PGPR inoculations effectively improved microbial community stability and promoted Moso bamboo growth.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Review
Microbiology
Maximino Manzanera
Summary: The importance of preserving microorganisms has been recognized for decades, with current focus on improving preservation methods to enhance microbial survival rates, to save new taxa, and preserve fragile microbial communities. The effects of drought on microbial diversity shift and molecular responses of microorganisms, as well as their interactions with other organisms are discussed. Additionally, the study emphasizes applying knowledge from desiccation-tolerant microorganisms to enhance preservation techniques.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Editorial Material
Biotechnology & Applied Microbiology
Adoracion Barros-Rodriguez, Maximino Manzanera
MICROBIAL BIOTECHNOLOGY
(2020)
Article
Environmental Sciences
A. Barros-Rodriguez, P. Rangseekaew, K. Lasudee, W. Pathom-aree, M. Manzanera
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Biotechnology & Applied Microbiology
Mercedes Gomez-Samblas, Susana Vilchez, Rocio Ortega-Velazquez, Marius V. Fuentes, Antonio Osuna
Summary: The study focused on detecting Toxoplasma gondii in cured ham from 100% Iberian sows raised on acorn feed in Spain, showing that the specific curing process used in making the ham effectively eliminates the parasite, making it a safe product for consumers.
Article
Water Resources
B. Munoz-Palazon, P. R. Bouzas, J. Gonzalez-Lopez, M. Manzanera
Summary: A epidemiological analysis conducted on 134 wastewater workers in 59 wastewater treatment plants in the province of Granada, Spain, revealed a seroprevalence of 8.95% for SARS-CoV-2 IgG, similar to the incidence rate in the general population of the province (9.6%). The findings suggest that current safety measures are sufficient to protect workers against SARS-CoV-2.
INTERNATIONAL JOURNAL OF WATER RESOURCES DEVELOPMENT
(2022)
Article
Infectious Diseases
Ana K. Ibarrola-Vannucci, Luis M. De Pablos, Lissette Retana-Moreira, Alberto Cornet-Gomez, Teresa Cruz-Bustos, Alejandro G. Schijman, Jose L. Ramirez, Susana Vilchez, Antonio Osuna
Summary: Chagas disease is a neglected tropical disease with no available vaccine and limited treatment options. The study on T. cruzi PHBs reveals their pleiotropic function in different parasite stages and highlights their potential as therapeutic targets. PHB2 deletion has a lethal effect on the parasite, while PHBs play roles in metacyclogenesis and ROS detoxification.
PLOS NEGLECTED TROPICAL DISEASES
(2021)
Article
Environmental Sciences
Miguel Hurtado-Martinez, Barbara Munoz-Palazon, Alejandro Gonzalez-Martinez, Maximino Manzanera, Jesus Gonzalez-Lopez
Summary: Inoculating denitrifying Pseudomonas strains carrying the nosZ gene into granular sequencing batch reactors enables the formation of stable granules, efficient removal of nitrate, and transformation of nitrate into nitrogen gas, which is of significant environmental interest to prevent the generation of nitrous oxide.
Article
Biochemistry & Molecular Biology
Alberto Fernandez-Fernandez, Antonio Osuna, Susana Vilchez
Summary: A 98.1 Kb genomic region from B. pumilus 15.1, isolated as an entomopathogen towards C. capitata, has been characterized to identify potential virulence factors. This study differentiates two regions responsible for producing a phage-like particle and a novel phage, respectively. The phage-like particle exhibits bacteriocin activity towards other B. pumilus strains, and the impact of both the phage-like particles and the phage on the toxicity towards C. capitata is evaluated.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Biochemistry & Molecular Biology
Rafael J. L. Morcillo, Maximino Manzanera
Summary: Plant growth-promoting rhizobacteria (PGPR) enhance plant tolerance to abiotic stresses by secreting exopolysaccharides (EPS), including salinity, drought, temperature, and heavy metal toxicity. Studying the mechanisms of EPS action and the impact of abiotic stresses on bacterial EPS production can provide a better understanding of the interactions between plants and microbes.
Article
Plant Sciences
Pharada Rangseekaew, Adoracion Barros-Rodriguez, Wasu Pathom-aree, Maximino Manzanera
Summary: The study demonstrates the potential of deep-sea Dermacoccus in promoting plant growth, particularly in mitigating salt stress in tomatoes by reducing oxidative stress caused by hydrogen peroxide. Additionally, the biosafety tests show that Deep-sea Dermacoccus poses no harmful effects, indicating its safety for environmental use.
Review
Plant Sciences
Adoracion Barros-Rodriguez, Pharada Rangseekaew, Krisana Lasudee, Wasu Pathom-aree, Maximino Manzanera
Summary: Agriculture plays a significant role in reducing biodiversity and altering the environment, leading to major environmental threats. In order to mitigate these impacts, the use of microorganisms as biostimulants can help minimize the detrimental effects of agricultural practices on ecosystems.
Article
Biology
Pharada Rangseekaew, Adoracion Barros-Rodriguez, Wasu Pathom-aree, Maximino Manzanera
Summary: In this study, the salt stress mitigation and plant growth promotion potential of a deep-sea actinobacterium, Dermacoccus abyssi MT1.1(T), in tomato seedlings were investigated. The results showed that the inoculation of D. abyssi MT1.1(T) could improve tomato seedlings growth under salt stress by increasing soluble sugars and reducing hydrogen peroxide content. The biosafety testing and genome analysis confirmed the safety of this strain. Overall, these findings suggest that D. abyssi MT1.1(T) has the potential to be used as a safe bio-inoculant for promoting plant growth under salt stress.
Article
Plant Sciences
Ines Rebelo Romao, Ana Sofia Rodrigues dos Santos, Leonardo Velasco, Elsa Martinez-Ferri, Juan Ignacio Vilchez, Maximino Manzanera
Summary: The study analyzes the possibility of using desiccation-tolerant microorganisms in an encapsulated format on seeds to improve crop drought tolerance. The results show significant effects under greenhouse conditions, but not as well in field trials.
Article
Microbiology
Alejandro Ledezma-Villanueva, Tatiana Robledo-Mahon, Cinta Gomez-Silvan, Gabriela Angeles-De Paz, Clementina Pozo, Maximino Manzanera, Concepcion Calvo, Elisabet Aranda
Summary: Emerging and unregulated contaminants in soils can be treated through bioremediation using native microorganisms. Enrichment experiments have shown that certain fungi and bacteria have the capability to degrade pollutants, indicating their potential use in tailored bioremediation techniques.
Article
Immunology
Juan San Francisco, Constanza Astudillo, Jose Luis Vega, Alejandro Catalan, Bessy Gutierrez, Jorge E. Araya, Anibal Zailberger, Anabel Marina, Carlos Garcia, Nuria Sanchez, Antonio Osuna, Susana Vilchez, Marcel Ramirez, Janaina Macedo, Veronica Santiago Feijoli, Giuseppe Palmisano, Jorge Gonzalez
Summary: The study aimed to determine the mechanism underlying the pathogenicity of T. cruzi. The results showed that high-virulence C8C3 hvir was highly infectious in mice and demonstrated higher parasite loads compared to low-virulence C8C3 lvir. Comparative proteomics revealed differential regulation of proteins associated with bioenergetic and biosynthetic pathways in C8C3 hvir. Furthermore, C8C3 hvir expressed higher levels of virulence factors such as Cruzipain, complement regulatory protein, trans-sialidase, Tc-85, and sialylated epitopes.