Janani Ragunathan, Krishna Nayana R U, Suhail Ashraf, Sevugapperumal Nakkeeran, Saranya Nallusamy, Kadiri Mahendra, Mohammad Raish
{"title":"Nonanol, an Induced Biomolecule Produced by Bacillus atrophaeus NMB01 During Interaction With Phytophthora infestans Can be Explored as a Novel Formulation for the Management of Late Blight of Potatoes","authors":"Janani Ragunathan, Krishna Nayana R U, Suhail Ashraf, Sevugapperumal Nakkeeran, Saranya Nallusamy, Kadiri Mahendra, Mohammad Raish","doi":"10.1002/jobm.70033","DOIUrl":"10.1002/jobm.70033","url":null,"abstract":"<div>\u0000 \u0000 <p><i>Phytophthora infestans</i>, the pathogen responsible for late blight, continues to pose a significant risk to worldwide potato cultivation, including its historical impact during the Irish Potato Famine. Traditional management relies heavily on synthetic fungicides, but their prolonged use has led to fungicide resistance and environmental concerns. This study examines the potential of the bacterial endophyte <i>Bacillus atrophaeus</i> NMB01 as a biocontrol agent against <i>P. infestans</i>. Six biomolecules produced by <i>B. atrophaeus</i> NMB01 were docked against 15 <i>P. infestans</i> protein targets, with 1-nonanol, glafenine hydrochloride, and mucic acid showing high binding affinity. Wet lab assays confirmed that 1-nonanol inhibited <i>P. infestans</i> mycelial growth by 78% at 2 ppm. Molecular dynamics simulations validated the stability of these interactions. A tri-trophic interaction study identified additional volatile and non-volatile organic compounds (VOCs/NVOCs), with minocycline and doxazosin exhibiting strong binding across all targets. Transcriptome analysis of <i>P. infestans</i> exposed to 1-nonanol revealed differential gene expression, with upregulated genes linked to stress responses and downregulated genes, such as TAR1, cysteine synthase, and glutathione transferase, presenting novel antifungal targets. This study highlights 1-nonanol as a promising eco-friendly alternative to conventional fungicides, offering a sustainable solution for managing late blight and advancing potato cultivation resilience.</p></div>","PeriodicalId":15101,"journal":{"name":"Journal of Basic Microbiology","volume":"65 9","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144006766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohamed A. Hussein, Youssuf A. Gherbawy, Eman G. A. M. El-Dawy
{"title":"Genotypic, Biological and Chemical Control of Fusarium Isolated From Different Crops With Zearalenone Toxin Detection","authors":"Mohamed A. Hussein, Youssuf A. Gherbawy, Eman G. A. M. El-Dawy","doi":"10.1002/jobm.70027","DOIUrl":"10.1002/jobm.70027","url":null,"abstract":"<div>\u0000 \u0000 <p>Cereals and other crops are often heavily laden with <i>Fusarium</i> species and are mostly contaminated with mycotoxins that have a serious effect on public health. Twenty-six strains of <i>Fusarium</i> were collected from different crops in the Qena Governorate. According to phylogenetic analysis of Translation Elongation Factor 1 alpha sequences, the collected strains were identified as <i>F</i>. <i>andiyazi</i>, <i>F</i>. <i>chlamydosporum</i>, <i>F</i>. <i>equiseti</i>, <i>F</i>. <i>incarnatum</i>, <i>F</i>. <i>proliferatum</i>, <i>F</i>. <i>thapsinum</i> and <i>F</i>. <i>verticillioides</i>. Using VICAM fluorometers, 100% of the tested strains were zearalenone (ZEN) producers on rice medium after 4 weeks of incubation at 25°C. The amounts of ZEN ranged from 0.025 to 0.69 ppm, with highest amounts were detected in <i>F</i>. <i>equiseti</i> AEMCF19, followed by <i>F. chlamydosporum</i> AEMCF17 come from barely. Also, the control of <i>Fusarium</i> growth was studied by biological and chemical methods. <i>Fusarium</i> growth was greatly depressed by <i>Macrophomina phaseolina</i> and the maximum suppression (73.7%) was detected against <i>F. verticillioides</i> AEMCF1 which was isolated from maize. The efficacy of zinc sulfate against the growth and conidia production of <i>Fusarium</i> was concentration-dependent. The growth of 34.6% of strains was completely stopped at 10 mM of ZnSO<sub>4</sub>. The conidia production in 23% of strains was promoted by a low dose (1 or 5 mM) of ZnSO<sub>4</sub> and potentially repressed or stopped at the higher dose.</p>\u0000 </div>","PeriodicalId":15101,"journal":{"name":"Journal of Basic Microbiology","volume":"65 6","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144063877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cover: Journal of Basic Microbiology. 4/2025","authors":"","doi":"10.1002/jobm.70032","DOIUrl":"https://doi.org/10.1002/jobm.70032","url":null,"abstract":"<p><b>Cover illustration:</b></p><p>Healthy cells of the ash weevil grub <i>Myllocerus subfasciatus</i> (Curculionidae: Coleoptera) from the control treatment were histologically studied against cells infected with <i>Metarhizium</i> spp. This study established a baseline for evaluating the effects of fungal infections on insect cell morphology and structure. <i>Metarhizium</i> spp.-infected insect cells showed morphological changes, cytoplasmic damage, and indications for fungal proliferation, depicting the mechanism of fungal invasion and the efficacy of <i>Metarhizium</i> as a biological control agent against ash weevils. The image illustrates the healthy cells of the ash weevil grub, offering a detailed view of the gut lumen, with cells examined through histopathological techniques.</p><p>(Figure: Monisha Udyakumar and Shanmugam Pagalahalli Sankaran, Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India)\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":15101,"journal":{"name":"Journal of Basic Microbiology","volume":"65 4","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jobm.70032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluating the Phytohormone Proficiencies of Multifarious Bacillus rugosus for Growth Promotion in Arachis hypogaea (L.)","authors":"Aniruddh Rabari, Janki Ruparelia, Chaitanya Kumar Jha, Kahkashan Perveen, Abhijit Debnath, Maheswari Behera, Andrea Mastinu","doi":"10.1002/jobm.70011","DOIUrl":"10.1002/jobm.70011","url":null,"abstract":"<p>The application of Plant Growth-Promoting Rhizobacteria (PGPR) in agriculture is increasingly emphasized as a sustainable alternative to hazardous agrochemicals. This study aimed to isolate and characterize PGPR strains from the rhizospheric soil of <i>Arachis hypogaea</i> L., hypothesizing that the rhizosphere of a healthy plant harbors beneficial microbes with significant plant growth-promoting (PGP) attributes. The isolate AB1 demonstrated promising PGP traits, including phosphate solubilization (56.44 µg mL⁻¹), zinc solubilization (6.1 µg mL⁻¹), ammonia production (3.8 µM µg mL⁻¹), and the synthesis of hydrogen cyanide (HCN) and phytohormones. Objectives included identifying these traits and evaluating their impact on the growth of <i>Arachis hypogaea</i> L. Phytohormonal profiling of AB1 through Gas Chromatography-Mass Spectrometry (GC-MS) and Fourier Transform Infrared Spectroscopy (FTIR) confirmed indole fractions with characteristic peaks at 3338 cm⁻¹ (N–H stretching), 1641 cm⁻¹ (C–N bond of the indole ring), and 2984 cm⁻¹ (C–H aromatic stretching). Cytokinins and gibberellins were also detected. Molecular, physiological, and biochemical analyses identified the isolate as <i>Bacillus rugosus</i> AB1, with gene sequences deposited under GenBank accession number MZ373174. The present study is the first report of <i>Bacillus rugosus</i> AB1 as a PGPR, showcasing multifaceted PGP traits that significantly enhanced root and shoot growth, biomass, and chlorophyll content in <i>Arachis hypogaea</i> L., demonstrating its potential as a biofertilizer for sustainable agriculture.</p>","PeriodicalId":15101,"journal":{"name":"Journal of Basic Microbiology","volume":"65 6","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jobm.70011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143772407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Actinobacteria as Proficient Biocontrol Agents for Combating Fungal Diseases in Forest Plant Species","authors":"Pooja Kapoor, Pooja Joshi, Manoj Pal, Vipin Parkash","doi":"10.1002/jobm.70030","DOIUrl":"10.1002/jobm.70030","url":null,"abstract":"<div>\u0000 \u0000 <p>Treating fungal pathogens with biocontrol agents and their bio-products is a cost effective, environmental friendly and suitable alternative strategy for managing fungal phytopathogens, minimizing the need for synthetic chemical fungicides. Actinomycetota/Actinobacteria are globally accepted as a major contributor and potent biological control agents in controlling fungal plant diseases. The objective of this review is to evaluate the promising biocontrol efficacy of Actinomycetota in managing fungal pathogens causing diseases in forest plant species, an area that has received less attention compared to crops. It aims to highlight the importance of Actinomycetota, mechanisms of the biocontrol process against phytopathogens, the commercial applications of <i>Streptomyces</i> spp. as effective biocontrol agents and research trends, emphasizing their role as an environmentally sustainable alternative to synthetic fungicides. Additionally, the study identifies possibilities and provides recommendations for future research on Actinomycetota's potential as proficient biocontrol agents against fungal pathogens in forestry.</p></div>","PeriodicalId":15101,"journal":{"name":"Journal of Basic Microbiology","volume":"65 9","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143772404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mohammad Danish, Mohammad Shahid, Sobhy M. Ibrahim, Lukman Ahamad
{"title":"Enhancing Pea Plant Growth, Nutrient Acquisition, and Symbiosis in Cobalt-Stressed Soil Using Metal-Tolerant Klebsiella sp.","authors":"Mohammad Danish, Mohammad Shahid, Sobhy M. Ibrahim, Lukman Ahamad","doi":"10.1002/jobm.70025","DOIUrl":"10.1002/jobm.70025","url":null,"abstract":"<div>\u0000 \u0000 <p>Excessive cobalt (Co) levels in agricultural soil cause significant toxicity, reducing crop growth and yield. This study aimed to assess the potential of <i>Klebsiella</i> sp. SRB-5 (Accession no. OR715782), in mitigating cobalt toxicity and enhancing the growth of garden peas under cobalt stress. Strain SRB-5, tolerant to 4000 ppm of Co(II), was evaluated for producing growth-regulating substances, including indole-3-acetic acid (IAA), ammonia, siderophore, ACC deaminase, and solubilized phosphate, under cobalt stress. The optimal conditions for Co-(II) biosorption by SRB-5 were determined to be 25°C, pH 6.0, and an incubation time of 72 h. The strain's ability to mitigate Co-(II) toxicity was tested by inoculating peas grown in soil treated with 1000, 2000, and 3000 ppm Co-(II). Inoculation with Co-tolerant SRB-5 alleviated cobalt toxicity and significantly enhanced the physiological and biochemical properties of plants. Notably, SRB-5 increased root length (19.2%), root biomass (29%), seedling vigor index (18.4%), total chlorophyll (52%), nodule biomass (41%), leghaemoglobin content (38%), root nitrogen (27%), and phosphorous content (19.3%) in 1000 ppm Co-stressed peas. Additionally, bacterial inoculation reduced proline, malondialdehyde (MDA), hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), and membrane injury by 85%, 57.3%, 90%, and 75%, respectively, in 1000 ppm Co-exposed plants. Priming with SRB-5 also reduced cobalt uptake in roots (88%), shoots (53.7%), and grains (79.6%) compared to uninoculated treatments. Metal-tolerant beneficial soil bacteria, such as <i>Klebsiella</i> sp. strain SRB-5, could serve as an effective alternative for enhancing pea production in metal-contaminated soils. The use of Co-tolerant PGPR strains holds potential for development as biofertilizers in future agricultural practices.</p>\u0000 </div>","PeriodicalId":15101,"journal":{"name":"Journal of Basic Microbiology","volume":"65 6","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143730256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pseudomonas From Extreme Environments: Physiological and Molecular Adaptations","authors":"Leandro Pio de Sousa","doi":"10.1002/jobm.70028","DOIUrl":"10.1002/jobm.70028","url":null,"abstract":"<div>\u0000 \u0000 <p>Extremophiles are defined as organisms that grow under environmental conditions considered extreme by human standards, such as high/low pH, high/low temperature, high radiation, high salinity, high pressures, high desiccation etc. Research on extremophiles has led to several advances in molecular biology and bioengineering, providing new insights about the origin of life on Earth and the possibility of interplanetary life. Although most <i>Pseudomonas</i> are mesophilic, some species can grow in extreme environments. Even so, <i>Pseudomonas</i> with these characteristics still receive little attention. This review seeks precisely to help raise interest in the topic by compiling part of the information about extremophile/tolerant <i>Pseudomonas</i>. Resistance to cold, heat, extreme pH, UV, salinity and desiccation were evaluated.</p>\u0000 </div>","PeriodicalId":15101,"journal":{"name":"Journal of Basic Microbiology","volume":"65 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143730265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Molecular Characterization of Bacterial Cellulose Producing Bacillus Strains Isolated From Soil","authors":"Idris Bektas, Nazli Betul Yildirim","doi":"10.1002/jobm.70026","DOIUrl":"10.1002/jobm.70026","url":null,"abstract":"<p>Bacterial cellulose (BC) a remarkable natural biopolymer, offering diverse applications across various industries. This study aimed to identify bacteria that are capable of producing bacterial cellulose through the utilization of various carbon sources isolated from soil. BC producing strains were identified as <i>Bacillus amyloliquefaciens</i> B1, <i>Bacillus subtilis</i> B2, <i>Bacillus velezensis</i> B3, <i>Bacillus siamensis</i> B4, and <i>B. amyloliquefaciens</i> B5 by 16 s rDNA sequencing analysis. The highest amount of BC production observed was when Sucrose was used as the carbon source, the trend <i>B. siamensis</i> B4 (3.0 ± 0.35 g L<sup>−1</sup>) > <i>B. subtilis</i> B2 (2.8 ± 0.57 g L<sup>−1</sup>) > <i>B. velezensis</i> B3 (2.5 ± 0.85 g L<sup>−1</sup>) > <i>B. amyloliquefaciens</i> B1 (2.3 ± 0.68 g L<sup>−1</sup>) > <i>B. amyloliquefaciens</i> B5 (2 ± 0.71 g L<sup>−1</sup>). The antibacterial activity of BCs was examined against <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. The BC produced by <i>B. amyloliquefaciens</i> B5 showed the highest antibacterial activity against <i>S. aureus</i> and and <i>E. coli</i> by producing a clear inhibition zone of 11 and 9 mm, respectively. The water retention capability (WRC %) of the BCs demonstrated a notable range, measuring between 177.7% and 150%. Additionally, the moisture content (MC %) of these samples varied, falling within a range of 64%–60%. The formation of BCs was detected by FTIR analysis. The BC membrane were exhibited definitive characteristics, including a robust nanodimensional network and microfibrils, as evidenced by scanning electron microscopy (SEM). Furthermore, investigation molecular basis of cellulose synthesis of <i>Bacillus</i> strains during cellulose synthesis could offer valuable insights for optimizing production processes.</p>","PeriodicalId":15101,"journal":{"name":"Journal of Basic Microbiology","volume":"65 6","pages":""},"PeriodicalIF":3.5,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jobm.70026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143730261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}