Article
Agronomy
Gaber Attia Abo-Zaid, Ahmed Salah Abdullah, Nadia Abdel-Mohsen Soliman, Ebaa Ebrahim El-Sharouny, Abdulaziz A. Al-Askar, Yiming Su, Ahmed Abdelkhalek, Soraya Abdel-Fattah Sabry
Summary: The secretion of siderophores by Pseudomonas aeruginosa F2 and P. fluorescens JY3 was evaluated and found to have an inhibitory effect on Fusarium oxysporum and Rhizoctonia solani. Two optimized media were used to produce siderophores as biocontrol agents, and the cell-free supernatants containing siderophores were used to prepare bio-friendly formulations. These formulations showed significant reduction in damping-off caused by F. oxysporum and R. solani, as well as promoting the growth of wheat plants.
Article
Microbiology
Nadia Riera, Danilo Davyt, Rosario Duran, Gregorio Iraola, Philippe Lemanceau, Natalia Bajsa
Summary: Pseudomonas fluorescens CFBP2392 has been found to have antibacterial and antifungal activities, and can effectively inhibit the growth of various plant pathogens and affect the ultrastructure of fungi. Genomic analysis identified multiple biosynthetic gene clusters involved in specialized metabolite production, providing a basis for further exploration of the potential of specialized metabolites in this strain.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Agriculture, Multidisciplinary
Yi Zhang, Wen-Ying Zhuang
Summary: In this study, the functions of three MAPK genes in Trichoderma brevicrassum strain TC967 were investigated. The Hog1-MAPK was essential for conidiation and tolerance to saline/osmotic stress, while Fus3- and Slt2-MAPK deletion mutants showed increased effectiveness in inhibiting the growth of the plant pathogen Rhizoctonia solani. These findings suggest that MAPKs play a major role in regulating biocontrol-related gene expressions in TC967.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Entomology
Bhupesh Chandra Kabdwal, Roopali Sharma, Arun Kumar, Satya Kumar, K. P. Singh, R. M. Srivastava
Summary: The combination treatment of glyphosate, Pseudomonas fluorescens (Pf27) and Trichoderma harzianum (Th47) was found to be effective in reducing the incidence and severity of sheath blight in rice, as well as promoting rice growth. This study is of great importance for the implementation of sustainable disease management strategies in rice cultivation.
EGYPTIAN JOURNAL OF BIOLOGICAL PEST CONTROL
(2023)
Article
Biotechnology & Applied Microbiology
Qingxia Zhang, Belinda E. Stummer, Qinggang Guo, Wen Zhang, Xinjian Zhang, Liqun Zhang, Paul R. Harvey
Summary: Bacillus subtilis strain NCD-2 and Pseudomonas protegens strain FD6 produce antimicrobial metabolites effective against soil-borne plant pathogens. qPCR assays were used to monitor the populations of these inoculants in soil and rhizosphere, showing significant suppression of Rhizoctonia root rot in wheat seedlings. The study demonstrates the potential applications of these assays in controlling crop diseases.
BIOLOGICAL CONTROL
(2021)
Article
Biology
Alba Pacheco-Moreno, Francesca L. Stefanato, Jonathan J. Ford, Christine Trippel, Simon Uszkoreit, Laura Ferrafiat, Lucia Grenga, Ruth Dickens, Nathan Kelly, Alexander D. H. Kingdon, Liana Ambrosetti, Sergey A. Nepogodiev, Kim C. Findlay, Jitender Cheema, Martin Trick, Govind Chandra, Graham Tomalin, Jacob G. Malone, Andrew W. Truman
Summary: Researchers genetically and phenotypically characterized the Pseudomonas fluorescens population in a commercial potato field, revealing strong correlations between specialized metabolite biosynthesis and antagonism of potato pathogens. They found that specialized metabolites such as hydrogen cyanide and cyclic lipopeptides play key roles in inhibiting the pathogens, and that the population dynamics of Pseudomonas bacteria in the field are influenced by plant colonization and environmental factors.
Article
Agronomy
Zohreh Nassimi, Parissa Taheri, Xi Kong, Wubei Dong, Saeed Tarighi
Summary: The study demonstrates the inhibitory effect of the antimicrobial peptide AsR416 on the growth and sclerotia formation of the rice sheath blight pathogen Rhizoctonia solani AG1-IA, both in vitro and in vivo conditions. Metabolomics tools reveal the mode of action of AsR416 in inhibiting sclerotia formation by inducing O-2(-) formation and cell death in the hyphal cells of the pathogen. AsR416 shows potential as a biocontrol agent to reduce sheath blight disease severity and decrease the need for synthetic fungicides in rice production.
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Fariba Fathi, Roohallah Saberi-Riseh, Pejman Khodaygan
Summary: The microencapsulation technique plays a crucial role in preserving the efficacy of plant probiotic bacteria in soil. Choosing appropriate coating materials, such as Alg-WPC, can enhance the survivability and overall effectiveness of P. fluorescens in plants.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biochemistry & Molecular Biology
Jie Zhong, Wen Wen Sui, Xin Yi Bai, Ze Lan Qiu, Xiao Gang Li, Jun Zi Zhu
Summary: Rhizoctonia solani is a devastating plant pathogenic fungus that infects important crops. Researchers isolated a promising biocontrol strain, ZZ-21, from forest inter-root soil and found that it exhibited a significant inhibitory effect on R. solani and other phytopathogens. The strain ZZ-21 was identified as Streptomyces olivoreticuli and was found to secrete antimicrobial bioactive compounds. This strain has the potential to be developed into a biopesticide against tobacco target spot disease.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Tong-wen Zheng, Lu Liu, Qian-wen Nie, Tom Hsiang, Zheng-xiang Sun, Yi Zhou
Summary: By isolating bacterial endophytes from Fraxinus hupehensis, the study identified Bacillus velezensis D61-A as a potential biocontrol agent against the rice sheath blight pathogen Rhizoctonia solani, showing strong inhibitory activity. This strain exhibited antagonistic mechanisms, producing cell-wall-degrading enzymes, siderophores, and non-volatile metabolites, and demonstrated high control efficacy in greenhouse and field trials.
BIOLOGICAL CONTROL
(2021)
Article
Microbiology
Manoj Kumar Solanki, Anjali Chandrol Solanki, Shalini Rai, Supriya Srivastava, Brijendra Kumar Kashyap, Praveen Kumar Divvela, Sudheer Kumar, Mahesh S. Yandigeri, Prem Lal Kashyap, Alok Kumar Shrivastava, Baber Ali, Shahid Khan, Mariusz Jaremko, Kamal Ahmad Qureshi
Summary: Microbial interactions with plant roots play an important role in tomato plant growth and defense against Rhizoctonia solani. This study investigated the effects of two antagonistic bacteria on tomato rhizosphere soil and found that certain soil indicators and microbial functions were crucial for disease suppression. Metabolic profiling showed that carbon sources were essential in the interaction between plants, pathogens, and antagonists.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Agriculture, Multidisciplinary
Qingqing Yang, Qing Yan, Bo Zhang, Li-qun Zhang, Xiaogang Wu
Summary: Carbon metabolism plays a critical role in the production of the bacterial secondary metabolite 2,4-diacetylphloroglucinol (2,4-DAPG) and the biocontrol capacity of Pseudomonas fluorescens 2P24. The citrate synthase gene gltA regulates the expression of 2,4-DAPG biosynthesis genes and is essential for biocontrol activity. Mutation of gltA decreases 2,4-DAPG synthesis and impairs biocontrol capacity against bacterial wilt disease, while citrate addition enhances 2,4-DAPG production.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Agronomy
Meysam Soltani Nejad, Neda Samandari Najafabadi, Sonia Aghighi, Amir Hashem Shahidi Bonjar, Kheda Magomed-Salihovna Murtazova, Magomed Ramzanovich Nakhaev, Meisam Zargar
Summary: A study conducted in the Guilan Province of Iran identified a Streptomyces strain with antifungal capabilities that can be used as a biocontrol agent to reduce rice sheath blight disease, highlighting its potential for Integrated Disease Management (IDM).
Article
Microbiology
Kiran Paliwal, Anjana Jajoo, Rupal Singh Tomar, Anil Prakash, Asad Syed, Jeberlin Prabina Bright, R. Z. Sayyed
Summary: The combination of biocontrol agent Pseudomonas fluorescence and chemical fungicide carbendazim effectively inhibited the growth of Rhizoctonia solani, resulting in a significant reduction in disease incidence and severity in soybean. This integrated approach also improved plant growth and photosynthetic efficiency, reducing the negative impact of chemical fungicides on the environment and human health.
CURRENT MICROBIOLOGY
(2023)
Article
Virology
Meiling Zhang, Zhenrui He, Xiaotong Huang, Canwei Shu, Erxun Zhou
Summary: A novel mycovirus, RsRV5, was identified in strain D122 of Rhizoctonia solani AG-1 IA, causing rice sheath blight. Removal of RsRV5 from D122 led to the development of isogenic strain D122-P with enhanced growth rate, sclerotia production, and pathogenicity. Transcriptome analysis revealed differential gene expression between D122 and D122-P, shedding light on the molecular mechanisms of the interaction between RsRV5 and its host.
Review
Food Science & Technology
Asmita Rajwar, Pragati Srivastava, Manvika Sahgal
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2016)
Article
Biotechnology & Applied Microbiology
Asmita Rajwar, Manvika Sahgal
Article
Biotechnology & Applied Microbiology
Asmita Rajwar, Manvika Sahgal
Article
Multidisciplinary Sciences
Neha Arya, Anjul Rana, Asmita Rajwar, Manvika Sahgal, A. K. Sharma
NATIONAL ACADEMY SCIENCE LETTERS-INDIA
(2018)
Article
Multidisciplinary Sciences
Govind Kumar, Manvika Sahgal, Mahesh Kumar Bharti, Atindra K. Pandey, Anupama Singh
NATIONAL ACADEMY SCIENCE LETTERS-INDIA
(2014)
Article
Agronomy
Shyam Kanwar, Govind Kumar, Manvika Sahgal, Anupama Singh
Article
Agronomy
Samiksha Joshi, Vandana Jaggi, Saurabh Gangola, Arjun Singh, V. K. Sah, Manvika Sahgal
Summary: This study compared the bacterial communities of Dalbergia sissoo trees in forests with healthy trees versus forests with wilted trees. The results showed variations in microbial communities and functional diversity based on the health status of the plants. Wilted trees had lower presence of beneficial phyla and higher abundance of pathogenic bacterial genera in the soil, indicating the need for biological control strategies and identification of bioinoculant microbes for sustainable productivity of Dalbergia trees.
Article
Microbiology
Alok Sharma, Ashutosh Pathak, Manvika Sahgal, Jean-Marie Meyer, Victor Wray, Bhavdish N. Johri
ARCHIVES OF MICROBIOLOGY
(2007)
Editorial Material
Multidisciplinary Sciences
M Sahgal, BN Johri
Article
Multidisciplinary Sciences
P Pandey, M Sahgal, DK Maheswari, BN Johri
Review
Multidisciplinary Sciences
A Sharma, M Sahgal, BN Johri
Article
Multidisciplinary Sciences
M Sahgal, BN Johri
Article
Microbiology
M Sahgal, A Sharma, BN Johri, A Prakash