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Mukherjee P, Dutta J, Roy M, Thakur TK, Mitra A. Plant growth-promoting rhizobacterial secondary metabolites in augmenting heavy metal(loid) phytoremediation: An integrated green in situ ecorestorative technology. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:55851-55894. [PMID: 39251536 DOI: 10.1007/s11356-024-34706-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 11/17/2022] [Indexed: 09/11/2024]
Abstract
In recent times, increased geogenic and human-centric activities have caused significant heavy metal(loid) (HM) contamination of soil, adversely impacting environmental, plant, and human health. Phytoremediation is an evolving, cost-effective, environment-friendly, in situ technology that employs indigenous/exotic plant species as natural purifiers to remove toxic HM(s) from deteriorated ambient soil. Interestingly, the plant's rhizomicrobiome is pivotal in promoting overall plant nutrition, health, and phytoremediation. Certain secondary metabolites produced by plant growth-promoting rhizobacteria (PGPR) directly participate in HM bioremediation through chelation/mobilization/sequestration/bioadsorption/bioaccumulation, thus altering metal(loid) bioavailability for their uptake, accumulation, and translocation by plants. Moreover, the metallotolerance of the PGPR and the host plant is another critical factor for the successful phytoremediation of metal(loid)-polluted soil. Among the phytotechniques available for HM remediation, phytoextraction/phytoaccumulation (HM mobilization, uptake, and accumulation within the different plant tissues) and phytosequestration/phytostabilization (HM immobilization within the soil) have gained momentum in recent years. Natural metal(loid)-hyperaccumulating plants have the potential to assimilate increased levels of metal(loid)s, and several such species have already been identified as potential candidates for HM phytoremediation. Furthermore, the development of transgenic rhizobacterial and/or plant strains with enhanced environmental adaptability and metal(loid) uptake ability using genetic engineering might open new avenues in PGPR-assisted phytoremediation technologies. With the use of the Geographic Information System (GIS) for identifying metal(loid)-impacted lands and an appropriate combination of normal/transgenic (hyper)accumulator plant(s) and rhizobacterial inoculant(s), it is possible to develop efficient integrated phytobial remediation strategies in boosting the clean-up process over vast regions of HM-contaminated sites and eventually restore ecosystem health.
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Affiliation(s)
- Pritam Mukherjee
- Department of Oceanography, Techno India University, West Bengal, EM 4/1 Sector V, Salt Lake, Kolkata, 700091, West Bengal, India.
| | - Joystu Dutta
- Department of Environmental Science, University Teaching Department, Sant Gahira Guru University, Ambikapur, 497001, Chhattisgarh, India
| | - Madhumita Roy
- Department of Microbiology, Bose Institute, P-1/12, CIT Road, Scheme VIIM, Kankurgachi, Kolkata, 700054, West Bengal, India
| | - Tarun Kumar Thakur
- Department of Environmental Science, Indira Gandhi National Tribal University, Amarkantak, 484886, Madhya Pradesh, India
| | - Abhijit Mitra
- Department of Marine Science, University of Calcutta, 35 B. C. Road, Kolkata, 700019, West Bengal, India
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Bekkar AA, Zaim S. Newly isolated Brevundimonas naejangsanensis as a biocontrol agent against Fusarium redolens the causal of Fusarium yellows of chickpea. Folia Microbiol (Praha) 2024; 69:835-846. [PMID: 38175463 DOI: 10.1007/s12223-023-01126-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024]
Abstract
Three endophytic bacteria, namely BvV, BvP and BvL, were newly isolated from the root nodules of bean, pea and lentil plants respectively cultivated in Mascara the northwest of Algeria, and identified by 16S ribosomal RNA gene sequencing as Brevundimonas naejangsanensis. These strains were able to produce hydrolytic enzymes and hydrogen cyanide. All strains produced a growth-promoting hormone, indole acetic acid, varying in concentration from 83.2 to 171.7 µg/mL. The phosphate solubilizing activity of BvV, BvP and BvL varied from 25.5 to 42.02 µg/mL for tricalcium phosphate. The three antagonistic Brevundimonas spp. showed in vitro the most inhibitory effect on mycelial growth of Fusarium redolens FRC (from 78.33 to 85.55%). Strain BvV, BvP and BvL produced also volatile metabolites which inhibited mycelial FRC growth up to 39.2%. All strains showed significant disease reduction in pot experiments. Chickpea Fusarium yellows severity caused by FRC was reduced significantly from 89.3 to 96.6% in the susceptible cultivar ILC 482 treated with antagonistic B. naejangsanensis. The maximum stimulatory effect on chickpea plants growth was observed by inoculation of strain BvV. This treatment resulted in a 7.40-26.21% increase in shoot height as compared to the control plants. It is concluded that the endophytic bacterial strains of B. naejangsanensis having different plant growth promoting (PGP) activities can be considered as beneficial microbes for sustainable agriculture. To our knowledge, this is the first report to use B. naejangsanensis strains as a new biocontrol agent against F. redolens, a new pathogen of chickpea plants causing Fusarium yellows disease in Algeria.
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Affiliation(s)
- Ahmed Amine Bekkar
- Laboratory of Research on Biological Systems and Geomatics (L.R.S.B.G), Department of Agronomy, Faculty of Life and Natural Sciences, University Mustapha Stambouli of Mascara, Mascara, Algeria.
| | - Souad Zaim
- Laboratory of Research on Biological Systems and Geomatics (L.R.S.B.G), Department of Agronomy, Faculty of Life and Natural Sciences, University Mustapha Stambouli of Mascara, Mascara, Algeria
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Zhang X, Meng X, Jiao X, Sa R, Wang Z, Li J, Wang B, Liu D, Yang B, Zou C, Zhang Y. Preventive effect of Cleome spinosa against cucumber Fusarium wilt and improvement on cucumber growth and physiology. 3 Biotech 2024; 14:97. [PMID: 38449710 PMCID: PMC10912404 DOI: 10.1007/s13205-024-03945-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 01/28/2024] [Indexed: 03/08/2024] Open
Abstract
Cucumber wilt is an important soil borne disease in cucumber production, which seriously affects the development of the cucumber industry. Cleome spinosa also has pharmacological effects such as antibacterial, analgesic, anti-inflammatory, and insect repellent. To study the control effect and mechanism of Cleome spinosa fumigation on cucumber wilt disease, different concentrations of Cleome spinosa fragments were applied on cucumber plants infected with Fusarium oxysporum. Cleome spinosa fumigation significantly reduced the incidence rate of cucumber Fusarium wilt. Under the fumigation treatment of 7.5 g kg-1 Cleome spinosa fragments, the preventive effects were 74.7%. Cleome spinosa fragments fumigation can promote cucumber growth and synthesis of photosynthetic pigments, thereby improving individual plant yield and fruit quality. At 7.5 g kg-1 Cleome spinosa fragments fumigation treatment, the plant height and individual plant yield of cucumber increased by 20.3% and 34.3%, respectively. Cleome spinosa fumigation can enhance the activity of antioxidant enzymes in cucumber, maintain a balance of reactive oxygen species metabolism, and enhance the plant disease resistance. Moreover, Cleome spinosa can also regulate the activities of Mg2+-ATPase and Ca2+-ATPase, enhancing its resistance to Fusarium oxysporum. Moreover, number of bacteria and fungi significantly decreased under Cleome spinosa fumigation. Those results suggested that Cleome spinosa could effectively restrain cucumber Fusarium wilt. This study will provide a new idea for the further use of biological fumigation to prevent soil-borne diseases.
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Affiliation(s)
- Xingzhe Zhang
- Mudanjiang Branch, Heilongjiang Academy of Agricultural Science, Mudanjiang, 157000 China
- College of Plant Protection, Northeast Agricultural University, Harbin, 150030 China
| | - Xianghai Meng
- Mudanjiang Branch, Heilongjiang Academy of Agricultural Science, Mudanjiang, 157000 China
| | - Xiaodan Jiao
- Heilongjiang Plant Quarantine and Protection Station, Harbin, 150030 China
| | - Rina Sa
- College of Horticulture and Landscape Architecture, Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Zhen Wang
- Heilongjiang Plant Quarantine and Protection Station, Harbin, 150030 China
| | - Jiwen Li
- Heilongjiang Plant Quarantine and Protection Station, Harbin, 150030 China
| | - Baicheng Wang
- Mudanjiang Branch, Heilongjiang Academy of Agricultural Science, Mudanjiang, 157000 China
| | - Dong Liu
- College of Plant Protection, Northeast Agricultural University, Harbin, 150030 China
| | - Bing Yang
- Mudanjiang Branch, Heilongjiang Academy of Agricultural Science, Mudanjiang, 157000 China
| | - Chunlei Zou
- College of Agronomy, Shanxi Agricultural University, Taigu, 030800 China
| | - Yanju Zhang
- College of Plant Protection, Northeast Agricultural University, Harbin, 150030 China
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Zhan Y, Zhou Y, Wang E, Miao X, Zhou T, Yan N, Chen C, Li Q. Effects of reductive soil disinfestation combined with different types of organic materials on the microbial community and functions. Microbiol Spectr 2024; 12:e0080223. [PMID: 38230941 PMCID: PMC10846035 DOI: 10.1128/spectrum.00802-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 11/23/2023] [Indexed: 01/18/2024] Open
Abstract
Reductive soil disinfestation (RSD) is an effective method to inhibit soilborne pathogens. However, it remains unclear how RSD combined with different types of organic materials affects the soil ecosystems of perennial plants. Pot experiments were conducted to investigate the effects of RSD incorporated with perilla (PF), alfalfa (MS), ethanol, and acetic acid on soil properties, enzyme activities, microbial communities and functions, and seedling growth. Results showed that RSD-related treatments improved soil properties and enzyme activities, changed microbial community composition and structure, enhanced microbial interactions and functions, and facilitated seedling growth. Compared with CK, RSD-related treatments increased soil pH, available nitrogen, and available potassium contents, sucrase and catalase activities, and decreased soil electric conductivity values. Meanwhile, RSD-related treatment also significantly reduced the relative abundance of Fusarium while increasing the relative abundance of Arthrobacter, Terrabacter, and Gemmatimonas. The reduction was more evident in PF and MS treatment, suggesting the potential for RSD combined with solid agricultural wastes to suppress pathogens. Furthermore, the microbial network of RSD-related treatment was more complex and interconnected, and the functions related to carbon, nitrogen, sulfur, and hydrogen cycling were significantly increased, while the functions of bacterial and fungal plant pathogens were decreased. Importantly, RSD-related treatments also significantly promoted seed germination and seedling growth. In summary, RSD combined with solid agricultural wastes is better than liquid easily degradable compounds by regulating the composition and function of microbial communities to improve soil quality and promote plant growth.IMPORTANCEReductive soil disinfestation (RSD) is an effective agricultural practice. We found that RSD combined with solid agricultural wastes is better than that of liquid easily degradable compounds, may improve soil quality and microbial community structure, inhibit the proliferation of pathogenic bacteria, and contribute to the growth of replanted crops. Thus, RSD combined with solid agricultural wastes is more effective than liquid easily degradable compounds.
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Affiliation(s)
- Yu Zhan
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Yi Zhou
- School of Pharmaceutical Sciences, Changchun University of Chinese Medicine, Changchun, China
| | - Ergang Wang
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Xinyue Miao
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Tingting Zhou
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Ning Yan
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Changbao Chen
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
| | - Qiong Li
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
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Khan S, Ambika, Rani K, Sharma S, Kumar A, Singh S, Thapliyal M, Rawat P, Thakur A, Pandey S, Thapliyal A, Pal M, Singh Y. Rhizobacterial mediated interactions in Curcuma longa for plant growth and enhanced crop productivity: a systematic review. FRONTIERS IN PLANT SCIENCE 2023; 14:1231676. [PMID: 37692412 PMCID: PMC10484415 DOI: 10.3389/fpls.2023.1231676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 07/21/2023] [Indexed: 09/12/2023]
Abstract
Turmeric (Curcuma longa L.), a significant commercial crop of the Indian subcontinent is widely used as a condiment, natural dye, and as a cure for different ailments. Various bioactive compounds such as turmerones and curcuminoids have been isolated from C. longa that have shown remarkable medicinal activity against various ailments. However, reduced soil fertility, climatic variations, rapid urbanization, and enhanced food demand, pose a multifaceted challenge to the current agricultural practices of C. longa. Plant growth-promoting microbes play a vital role in plant growth and development by regulating primary and secondary metabolite production. Rhizospheric associations are complex species-specific interconnections of different microbiota with a plant that sustain soil health and promote plant growth through nutrient acquisition, nitrogen fixation, phosphate availability, phytohormone production, and antimicrobial activities. An elaborative study of microbiota associated with the roots of C. longa is essential for rhizospheric engineering as there is a huge potential to develop novel products based on microbial consortium formulations and elicitors to improve plant health, stress tolerance, and the production of secondary metabolites such as curcumin. Primarily, the purpose of this review is to implicate the rhizospheric microbial flora as probiotics influencing overall C. longa health, development, and survival for an increase in biomass, enhanced yield of secondary metabolites, and sustainable crop production.
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Affiliation(s)
- Sonam Khan
- Department of Biotechnology, Graphic Era Deemed to be University, Dehradun, India
| | - Ambika
- Forest Pathology Discipline, Forest Protection Division, ICFRE-Forest Research Institute, Dehradun, India
| | - Komal Rani
- Genetics and Tree Improvement Division, ICFRE-Forest Research Institute, Dehradun, India
| | - Sushant Sharma
- Genetics and Tree Improvement Division, ICFRE-Forest Research Institute, Dehradun, India
| | - Abhishek Kumar
- Forest Ecology and Climate Change Division, ICFRE-Forest Research Institute, Dehradun, India
| | - Seema Singh
- Forest Pathology Discipline, Forest Protection Division, ICFRE-Forest Research Institute, Dehradun, India
| | - Madhu Thapliyal
- Department of Zoology, Ram Chandra Uniyal Government Post Graduate College College, Uttarkashi, India
| | - Pramod Rawat
- Department of Biotechnology, Graphic Era Deemed to be University, Dehradun, India
| | - Ajay Thakur
- Genetics and Tree Improvement Division, ICFRE-Forest Research Institute, Dehradun, India
| | - Shailesh Pandey
- Forest Pathology Discipline, Forest Protection Division, ICFRE-Forest Research Institute, Dehradun, India
| | - Ashish Thapliyal
- Department of Microbiology, Graphic Era Deemed to be University, Dehradun, India
| | - Manoj Pal
- Department of Microbiology, Graphic Era Deemed to be University, Dehradun, India
| | - Yashaswi Singh
- Department of Biotechnology, Graphic Era Deemed to be University, Dehradun, India
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Arnold ND, Garbe D, Brück TB. Proteomic and Transcriptomic Analyses to Decipher the Chitinolytic Response of Jeongeupia spp. Mar Drugs 2023; 21:448. [PMID: 37623729 PMCID: PMC10455584 DOI: 10.3390/md21080448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/12/2023] [Accepted: 08/13/2023] [Indexed: 08/26/2023] Open
Abstract
In nature, chitin, the most abundant marine biopolymer, does not accumulate due to the action of chitinolytic organisms, whose saccharification systems provide instructional blueprints for effective chitin conversion. Therefore, discovery and deconstruction of chitinolytic machineries and associated enzyme systems are essential for the advancement of biotechnological chitin valorization. Through combined investigation of the chitin-induced secretome with differential proteomic and transcriptomic analyses, a holistic system biology approach has been applied to unravel the chitin response mechanisms in the Gram-negative Jeongeupia wiesaeckerbachi. Hereby, the majority of the genome-encoded chitinolytic machinery, consisting of various glycoside hydrolases and a lytic polysaccharide monooxygenase, could be detected extracellularly. Intracellular proteomics revealed a distinct translation pattern with significant upregulation of glucosamine transport, metabolism, and chemotaxis-associated proteins. While the differential transcriptomic results suggested the overall recruitment of more genes during chitin metabolism compared to that of glucose, the detected protein-mRNA correlation was low. As one of the first studies of its kind, the involvement of over 350 unique enzymes and 570 unique genes in the catabolic chitin response of a Gram-negative bacterium could be identified through a three-way systems biology approach. Based on the cumulative data, a holistic model for the chitinolytic machinery of Jeongeupia spp. is proposed.
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Affiliation(s)
| | | | - Thomas B. Brück
- TUM School of Natural Sciences, Department of Chemistry, Technical University of Munich, Werner-Siemens Chair for Synthetic Biotechnology (WSSB), Lichtenbergstr. 4, 85748 Garching, Germany; (N.D.A.); (D.G.)
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Arnold ND, Garbe D, Brück TB. Isolation, biochemical characterization, and genome sequencing of two high-quality genomes of a novel chitinolytic Jeongeupia species. Microbiologyopen 2023; 12:e1372. [PMID: 37642486 PMCID: PMC10404844 DOI: 10.1002/mbo3.1372] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/19/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023] Open
Abstract
Chitin is the second most abundant polysaccharide worldwide as part of arthropods' exoskeletons and fungal cell walls. Low concentrations in soils and sediments indicate rapid decomposition through chitinolytic organisms in terrestrial and aquatic ecosystems. The enacting enzymes, so-called chitinases, and their products, chitooligosaccharides, exhibit promising characteristics with applications ranging from crop protection to cosmetics, medical, textile, and wastewater industries. Exploring novel chitinolytic organisms is crucial to expand the enzymatical toolkit for biotechnological chitin utilization and to deepen our understanding of diverse catalytic mechanisms. In this study, we present two long-read sequencing-based genomes of highly similar Jeongeupia species, which have been screened, isolated, and biochemically characterized from chitin-amended soil samples. Through metabolic characterization, whole-genome alignments, and phylogenetic analysis, we could demonstrate how the investigated strains differ from the taxonomically closest strain Jeongeupia naejangsanensis BIO-TAS4-2T (DSM 24253). In silico analysis and sequence alignment revealed a multitude of highly conserved chitinolytic enzymes in the investigated Jeongeupia genomes. Based on these results, we suggest that the two strains represent a novel species within the genus of Jeongeupia, which may be useful for environmentally friendly N-acetylglucosamine production from crustacean shell or fungal biomass waste or as a crop protection agent.
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Affiliation(s)
- Nathanael D. Arnold
- Department of ChemistryWerner‐Siemens Chair for Synthetic Biotechnology (WSSB), TUM School of Natural Sciences, Technical University of MunichGarchingGermany
| | - Daniel Garbe
- Department of ChemistryWerner‐Siemens Chair for Synthetic Biotechnology (WSSB), TUM School of Natural Sciences, Technical University of MunichGarchingGermany
| | - Thomas B. Brück
- Department of ChemistryWerner‐Siemens Chair for Synthetic Biotechnology (WSSB), TUM School of Natural Sciences, Technical University of MunichGarchingGermany
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Asif R, Siddique MH, Hayat S, Rasul I, Nadeem H, Faisal M, Waseem M, Zakki SA, Zitouni A, Muzammil S. Efficacy of Saccharothrix algeriensis NRRL B-24137 to suppress Fusarium oxysporum f.sp. vasinfectum induced wilt disease in cotton. PeerJ 2023; 11:e14754. [PMID: 36778156 PMCID: PMC9910192 DOI: 10.7717/peerj.14754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 12/27/2022] [Indexed: 02/08/2023] Open
Abstract
Fusarium cotton wilt is a devastating disease of the cotton crop throughout the world, caused by Fusarium oxysporum f.sp. vasinfectum (FOV). Chemical control has many side effects, so, biological controls have been widely used for the management of Fusarium wilt. This study aimed to investigate the possible use of an actinomycetes Saccharothrix algeriensis (SA) NRRL B-24137 to control FOV. To access in-vitro anti-Fusarium ability of SA NRRL B-24137, dual culture assay, spore germination and seed germination tests were carried out. Following in-vitro investigations, several pot tests in a greenhouse environment were used to evaluate the biological control potential of SA NRRL B-24137 against FOV. Dual culture assay and spore germination revealed that SA NRRL B-24137 showed significant anti-Fusarium activity.During spore germination 87.77% inhibition of spore germination were observed. In pot experiments, SA NRRL B-24137 primed cotton seeds resulted in a 74.0% reduction in disease incidence. In soil there was a significant reduction in FOV spores in the presence of SA NRRL B-24137. Positive correlation was also observed on different concentrations of SA NRRL B-24137 towards FOV reduction. The results of this study showed that SA NRRL B-24137 has the potential to be employed as a biocontrol agent against Fusarium cotton wilt, improving cotton growth characteristics and yield.
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Affiliation(s)
- Rizwan Asif
- Department of Microbiology, Government College University, Faisalabad, Pakistan,Department of Eastern Medicine and Surgery, Qarshi University Lahore, Lahore, Pakistan
| | | | - Sumreen Hayat
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | - Ijaz Rasul
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Habibullah Nadeem
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Muhammad Faisal
- Institute of Plant Breeding and Biotechnology, MNS-University of Agriculture, Multan, Pakistan
| | - Muhammad Waseem
- Department of Environmental Science, Government College University, Faisalabad, Pakistan
| | - Shahbaz Ahmad Zakki
- Department of Public Health and Nutrition, The University of Haripur, Haripur, Pakistan
| | - Abdelghani Zitouni
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - Saima Muzammil
- Department of Microbiology, Government College University, Faisalabad, Pakistan
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Yun T, Jing T, Zhou D, Zhang M, Zhao Y, Li K, Zang X, Zhang L, Xie J, Wang W. Potential Biological Control of Endophytic Streptomyces sp. 5-4 Against Fusarium Wilt of Banana Caused by Fusarium oxysporum f. sp. cubense Tropical Race 4. PHYTOPATHOLOGY 2022; 112:1877-1885. [PMID: 35471064 DOI: 10.1094/phyto-11-21-0464-r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Fusarium wilt of banana caused by Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4) is one of the most disastrous fungal diseases. Biological control is a promising strategy for controlling Fusarium wilt of banana. To explore endophytic actinomycetes as biocontrol resources against Foc TR4, antagonistic strains were isolated from different tissues of medicinal plants. Here, a total of 144 actinomycetes were isolated and belonged to Nonomuraea, Kitasatospora, and Streptomyces. Forty-three isolates exhibited antifungal activities against Foc TR4. The strain labeled with 5-4 isolated from roots of Piper austrosinense had a broad-spectrum antifungal activity by the production of chitinase and β-1,3-glucanase and was identified as Streptomyces hygroscopicus subsp. hygroscopicus 5-4. Furthermore, disease index of banana wilt was significantly reduced by application of strain 5-4 in comparison with application of Foc TR4 alone. Exogenous application of strain 5-4 increased the expression levels of defense genes such as (PAL), peroxidase (POD), pathogenesis-related protein 1 (PR-1), hydrolytic enzymes (β-1,3-glucanase), lysin motif receptor kinase 1 (LYK-1), and mitogen-activated protein kinase 1 (MPK-1). The antifungal mechanism assay demonstrated that extracts of strain 5-4 inhibited spore gemination and hyphal growth of Foc TR4, and caused abnormally swollen, deformity, and rupture of Foc TR4 hypha. Thus, S. hygroscopicus subsp. hygroscopicus 5-4 could be used as a potential biological agent for controlling Fusarium wilt of banana.
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Affiliation(s)
- Tianyan Yun
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, 571101, China
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Tao Jing
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Dengbo Zhou
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, 571101, China
| | - Miaoyi Zhang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, 571101, China
| | - Yankun Zhao
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, 571101, China
| | - Kai Li
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, 571101, China
| | - Xiaoping Zang
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Lu Zhang
- Ministry of Education Key Laboratory for Ecology of Tropical Islands, Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province, College of Life Sciences, Hainan Normal University, Haikou 571158, China
| | - Jianghui Xie
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, 571101, China
| | - Wei Wang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, 571101, China
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Alwahshi KJ, Purayil GP, Saeed EE, Abufarajallah HA, Aldhaheri SJ, AbuQamar SF, El-Tarabily KA. The 1-aminocyclopropane-1-carboxylic acid deaminase-producing Streptomyces violaceoruber UAE1 can provide protection from sudden decline syndrome on date palm. FRONTIERS IN PLANT SCIENCE 2022; 13:904166. [PMID: 35968092 PMCID: PMC9373858 DOI: 10.3389/fpls.2022.904166] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/27/2022] [Indexed: 05/27/2023]
Abstract
In the United Arab Emirates (UAE), sudden decline syndrome (SDS) is one of the major fungal diseases caused by Fusarium solani affecting date palm plantations. To minimize the impact of the causal agent of SDS on date palm, native actinobacterial strains isolated from rhizosphere soils of healthy date palm plants were characterized according to their antifungal activities against F. solani DSM 106836 (Fs). Based on their in vitro abilities, two promising biocontrol agents (BCAs), namely Streptomyces tendae UAE1 (St) andStreptomyces violaceoruber UAE1 (Sv), were selected for the production of antifungal compounds and cell wall degrading enzymes (CWDEs), albeit their variations in synthesizing 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase (ACCD). Although both isolates showed antagonism when applied 7 days before the pathogen in the greenhouse experiments, the ACCD-producing Sv was relatively superior in its efficacy against SDS over the non-ACCD-producing St. This was evident from the symptoms of SDS in diseased date palm seedlings which were greatly reduced by Sv compared to St. On a scale of 5.0, the estimated disease severity indices in Fs-diseased seedlings were significantly (P < 0.05) reduced from 4.8 to 1.5 and 0.5 by St and Sv, respectively. Thus, the number of conidia of Fs recovered from plants pre-treated with both BCAs was comparable, but significantly (P < 0.05) reduced compared to plants without any BCA treatment. In addition, a significant (P < 0.05) decrease in ACC levels of both the root and shoot tissues was detected inSv + Fs seedlings to almost similar levels of healthy seedlings. However, in planta ACC levels highly increased in seedlings grown in soils infested with the pathogen alone or amended with St prior to F. solani infestation (St + Fs). This suggests a major role of ACCD production in relieving the stress of date palm seedlings infected with F. solani, thus supporting the integrated preventive disease management programs against this pathogen. This is the first report of effective rhizosphere actinobacterial BCAs to provide protection against SDS on date palm, and to help increase agricultural productivity in a more sustainable manner in the UAE and the other arid regions.
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Affiliation(s)
- Khawla J. Alwahshi
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
- Research Station Section, Abu Dhabi Agriculture and Food Safety Authority, Abu Dhabi, United Arab Emirates
| | - Gouthaman P. Purayil
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Esam Eldin Saeed
- Khalifa Center for Genetic Engineering and Biotechnology, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Haneen A. Abufarajallah
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Shama J. Aldhaheri
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Synan F. AbuQamar
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Khaled A. El-Tarabily
- Department of Biology, College of Science, United Arab Emirates University, Al-Ain, United Arab Emirates
- Khalifa Center for Genetic Engineering and Biotechnology, United Arab Emirates University, Al-Ain, United Arab Emirates
- Harry Butler Institute, Murdoch University, Murdoch, WA, Australia
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11
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Ellatif SA, Abdel Razik ES, AL-surhanee AA, Al-Sarraj F, Daigham GE, Mahfouz AY. Enhanced Production, Cloning, and Expression of a Xylanase Gene from Endophytic Fungal Strain Trichoderma harzianum kj831197.1: Unveiling the In Vitro Anti-Fungal Activity against Phytopathogenic Fungi. J Fungi (Basel) 2022; 8:jof8050447. [PMID: 35628703 PMCID: PMC9144407 DOI: 10.3390/jof8050447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/14/2022] [Accepted: 04/23/2022] [Indexed: 11/25/2022] Open
Abstract
Trichoderma sp. is extensively applied as a beneficial fungus for the management of plant diseases, plant growth promotion, induced resistance, and plays an important role in global sustainable agriculture. This study aimed to enhance the production of microbial xylanase in high titer from the endophytic fungus Trichoderma harzianum kj831197.1, and the cloning of xylanase genes in E. coli DH5α using a pUC19 vector. A combination of glucose, 0.1 mM, Tween 80 with lactose, and 2 mM galactose combined with malt extract boostedthe enzyme production. Xylanase production was maximized at a pH of 5.0, temp. of 30 °C, and agitation of 150 rpm in the presence of malt extract and bagasse as the best nitrogen source and waste, respectively, using submerged fermentation. The molecular weight of highly purified xylanase was 32 KDa, identified using SDS-PAGE. The xylanase gene of T. harzianum kj831197.1 was screened in fungal DNA using definite primers specified in the gene bank database. The identified region was excised using restriction enzymes HindIII and EcoRI and cloned into a pUC19 plasmid vector. Optimization of fermentation conditions improved xylanase production about 23.9-fold.The antifungal efficacy of xylanase toward different phytopathogenic fungi was determined. The highest inhibition was against Corynespora cassiicola, Alternaria sp., Fusarium oxysporum, and Botrytis fabae. This study offered an economical, simple, and efficient method using Trichoderma harzianum kj831197.1 for the production of the xylanase enzyme via the submerged fermentation method.
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Affiliation(s)
- Sawsan Abd Ellatif
- Bioprocess Development Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City for Scientific Research and Technology Applications, New Borg El-Arab 21934, Egypt
- Correspondence:
| | - Elsayed S. Abdel Razik
- Plant Protection and Biomolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City for Scientific Research and Technology Applications, New Borg El-Arab 21934, Egypt;
| | | | - Faisal Al-Sarraj
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Ghadir E. Daigham
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University (Girls Branch), Cairo 11435, Egypt; (G.E.D.); (A.Y.M.)
| | - Amira Y. Mahfouz
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University (Girls Branch), Cairo 11435, Egypt; (G.E.D.); (A.Y.M.)
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12
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Alonso-Estrada D, Ochoa-Viñals N, Pacios-Michelena S, Ramos-González R, Núñez-Caraballo A, Michelena Álvarez LG, Martínez-Hernández JL, Neira-Vielma AA, Ilyina A. No Solid Colloidal Carriers: Aspects Thermodynamic the Immobilization Chitinase and Laminarinase in Liposome. Front Bioeng Biotechnol 2022; 9:793340. [PMID: 35198549 PMCID: PMC8860326 DOI: 10.3389/fbioe.2021.793340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/15/2021] [Indexed: 11/13/2022] Open
Abstract
The present review describes the basic properties of colloidal and vesicular vehicles that can be used for immobilization of enzymes. The thermodynamic aspects of the immobilization of enzymes (laminarinase and chitinase) in liposomes are discussed. These systems protect enzymes against environmental stress and allow for a controlled and targeted release. The diversity of colloidal and vesicular carriers allows the use of enzymes for different purposes, such as mycolytic enzymes used to control phytopathogenic fungi.
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Affiliation(s)
- Dania Alonso-Estrada
- Nanobioscience and Biological and Genomic Sciences Research Groups, Postgraduate Program in Food Science and Technology, Faculty of Chemical Sciences of the Autonomous University of Coahuila, Saltillo, México
| | - Nayra Ochoa-Viñals
- Nanobioscience and Biological and Genomic Sciences Research Groups, Postgraduate Program in Food Science and Technology, Faculty of Chemical Sciences of the Autonomous University of Coahuila, Saltillo, México
| | - Sandra Pacios-Michelena
- Nanobioscience and Biological and Genomic Sciences Research Groups, Postgraduate Program in Food Science and Technology, Faculty of Chemical Sciences of the Autonomous University of Coahuila, Saltillo, México
| | - Rodolfo Ramos-González
- CONACYT- Autonomous University of Coahuila, Postgraduate Program in Food Science and Technology, Faculty of Chemical Sciences of the Autonomous University of Coahuila, Saltillo, México
| | | | | | - José Luis Martínez-Hernández
- Nanobioscience and Biological and Genomic Sciences Research Groups, Postgraduate Program in Food Science and Technology, Faculty of Chemical Sciences of the Autonomous University of Coahuila, Saltillo, México
| | - Alberto Antonio Neira-Vielma
- Nanobioscience and Biological and Genomic Sciences Research Groups, Postgraduate Program in Food Science and Technology, Faculty of Chemical Sciences of the Autonomous University of Coahuila, Saltillo, México
| | - Anna Ilyina
- Nanobioscience and Biological and Genomic Sciences Research Groups, Postgraduate Program in Food Science and Technology, Faculty of Chemical Sciences of the Autonomous University of Coahuila, Saltillo, México
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13
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Hydrolytic Enzymes from PGPR Against Plant Fungal Pathogens. Fungal Biol 2022. [DOI: 10.1007/978-3-031-04805-0_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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14
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Bioactive Biomolecules from Plant Growth-Promoting Rhizobacteria (PGPR). Fungal Biol 2022. [DOI: 10.1007/978-3-031-04805-0_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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15
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Alblooshi AA, Purayil GP, Saeed EE, Ramadan GA, Tariq S, Altaee AS, El-Tarabily KA, AbuQamar SF. Biocontrol Potential of Endophytic Actinobacteria against Fusarium solani, the Causal Agent of Sudden Decline Syndrome on Date Palm in the UAE. J Fungi (Basel) 2021; 8:jof8010008. [PMID: 35049948 PMCID: PMC8779766 DOI: 10.3390/jof8010008] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/16/2021] [Accepted: 12/18/2021] [Indexed: 01/07/2023] Open
Abstract
Thirty-one endophytic streptomycete and non-streptomycete actinobacteria were isolated from healthy date palm root tissues. In vitro screening revealed that the antifungal action of isolate #16 was associated with the production of cell-wall degrading enzymes, whereas with diffusible antifungal metabolites in isolate #28, albeit their production of volatile antifungal compounds. According to the 16S rRNA gene sequencing, isolates #16 and #28 were identified as Streptomyces polychromogenes UAE2 (Sp; GenBank Accession #: OK560620) and Streptomyces coeruleoprunus UAE1 (Sc; OK560621), respectively. The two antagonists were recovered from root tissues until 12 weeks after inoculation, efficiently colonized root cortex and xylem vessels, indicating that the date palm roots are a suitable habitat for these endophytic isolates. At the end of the greenhouse experiments, the development of sudden decline syndrome (SDS) was markedly suppressed by 53% with the application of Sp and 86% with Sc, confirming their potential in disease management. Results showed that the estimated disease severity indices in diseased seedlings were significantly (p < 0.05) reduced from 4.75 (scale of 5) to 2.25 or 0.67 by either Sp or Sc, respectively. In addition, conidial numbers of the pathogen significantly (p < 0.05) dropped by 38% and 76% with Sp and Sc, respectively, compared to infected seedlings with F. solani (control). Thus, the suppression of disease symptoms was superior in seedlings pre-inoculated with S. coeruleoprunus, indicating that the diffusible antifungal metabolites were responsible for F. solani retardation in these plants. This is the first report of actinobacteria naturally existing in date palm tissues acting as microbial antagonists against SDS on date palm.
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Affiliation(s)
- Aisha A. Alblooshi
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (A.A.A.); (G.P.P.); (G.A.R.); (A.S.A.)
| | - Gouthaman P. Purayil
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (A.A.A.); (G.P.P.); (G.A.R.); (A.S.A.)
| | - Esam Eldin Saeed
- Khalifa Center for Genetic Engineering and Biotechnology, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (E.E.S.)
| | - Gaber A. Ramadan
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (A.A.A.); (G.P.P.); (G.A.R.); (A.S.A.)
| | - Saeed Tariq
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (S.T.)
| | - Amna S. Altaee
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (A.A.A.); (G.P.P.); (G.A.R.); (A.S.A.)
| | - Khaled A. El-Tarabily
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (A.A.A.); (G.P.P.); (G.A.R.); (A.S.A.)
- Harry Butler Institute, Murdoch University, Murdoch, WA 6150, Australia
- Correspondence: (K.A.E.-T.); (S.F.A.); Tel.: +971-3-713-6518 (K.A.E.-T.); +971-3-713-6733 (S.F.A.)
| | - Synan F. AbuQamar
- Department of Biology, College of Science, United Arab Emirates University, Al Ain 15551, United Arab Emirates; (A.A.A.); (G.P.P.); (G.A.R.); (A.S.A.)
- Correspondence: (K.A.E.-T.); (S.F.A.); Tel.: +971-3-713-6518 (K.A.E.-T.); +971-3-713-6733 (S.F.A.)
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María Fernanda Villarreal-Delgado, Parra-Cota FI, Cira-Chávez LA, Estrada-Alvarado MI, de los Santos-Villalobos S. Bacillus sp. FSQ1: a Promising Biological Control Agent Against Sclerotinia sclerotiorum, the Causal Agent of white Mold in Common Bean (Phaseolus vulgaris L.). BIOL BULL+ 2021. [DOI: 10.1134/s1062359021060182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Rizvi A, Ahmed B, Khan MS, Umar S, Lee J. Sorghum-Phosphate Solubilizers Interactions: Crop Nutrition, Biotic Stress Alleviation, and Yield Optimization. FRONTIERS IN PLANT SCIENCE 2021; 12:746780. [PMID: 34925401 PMCID: PMC8671763 DOI: 10.3389/fpls.2021.746780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 11/01/2021] [Indexed: 06/14/2023]
Abstract
Sweet sorghum [Sorghum bicolor (L.) Moench] is a highly productive, gluten-free cereal crop plant that can be used as an alternative energy resource, human food, and livestock feed or for biofuel-ethanol production. Phosphate fertilization is a common practice to optimize sorghum yield but because of high cost, environmental hazards, and soil fertility reduction, the use of chemical P fertilizer is discouraged. Due to this, the impetus to search for an inexpensive and eco-friendly microbiome as an alternative to chemical P biofertilizer has been increased. Microbial formulations, especially phosphate solubilizing microbiome (PSM) either alone or in synergism with other rhizobacteria, modify the soil nutrient pool and augment the growth, P nutrition, and yield of sorghum. The use of PSM in sorghum disease management reduces the dependence on pesticides employed to control the phytopathogens damage. The role of PSM in the sorghum cultivation system is, however, relatively unresearched. In this manuscript, the diversity and the strategies adopted by PSM to expedite sorghum yield are reviewed, including the nutritional importance of sorghum in human health and the mechanism of P solubilization by PSM. Also, the impact of solo or composite inoculations of biological enhancers (PSM) with nitrogen fixers or arbuscular mycorrhizal fungi is explained. The approaches employed by PSM to control sorghum phytopathogens are highlighted. The simultaneous bio-enhancing and biocontrol activity of the PS microbiome provides better options for the replacement of chemical P fertilizers and pesticide application in sustainable sorghum production practices.
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Affiliation(s)
- Asfa Rizvi
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Bilal Ahmed
- School of Chemical Engineering, Yeungnam University, Gyeongsan, South Korea
| | - Mohammad Saghir Khan
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, India
| | - Shahid Umar
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, South Korea
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18
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Mir MI, Kumar BK, Gopalakrishnan S, Vadlamudi S, Hameeda B. Characterization of rhizobia isolated from leguminous plants and their impact on the growth of ICCV 2 variety of chickpea ( Cicer arietinum L.). Heliyon 2021; 7:e08321. [PMID: 34820538 PMCID: PMC8601996 DOI: 10.1016/j.heliyon.2021.e08321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/14/2021] [Accepted: 11/01/2021] [Indexed: 12/20/2022] Open
Abstract
Six rhizobia-like-bacterial strains in total, secluded from the root and stem nodules of various leguminous plants were characterized for growth promoting ability on ICCV 2 variety of chickpea. Bacterial strains showed production of IAA, NH3, siderophore, HCN, ACC deaminase, hydrolytic enzyme production such as chitinase, amylase, protease, lipase, β-1, 3-glucanase and solubilization of nutrients such as phosphate, zinc and potassium. However the performance of PGP traits characterized in-vitro varied among the six bacterial strains. The sequences of 16S rRNA gene of bacterial strains IHSR, IHRG, IHAA, IHGN-3, IHCP-1 and IHCP-2 showed maximum identity with Rhizobium sp., Rhizobium tropici, Rhizobium multihospitium, Mesorhizobium sp., Burkholderia cepacia and Rhizobium pusense. In plate culture conditions the bacterial strains changed the colour of media (NFB) from green to blue and showed amplification of nifH gene by PCR, and also enhanced nodule formation in chickpea under greenhouse conditions, which explains their nitrogen fixing ability. Scanning electron microscopy studies of chickpea roots showed colonization by all the six bacterial strains in solo and by consortium (IHRG + IHGN-3). Under greenhouse conditions, chickpea plants inoculated with different strains showed improvement in plant height, number of branches, total chlorophyll, nodule number, nodule weight, shoot weight, root weight, root volume and root surface area at 30 and 45 days after sowing (DAS) over the uninoculated control plants. It was also observed at the crop maturity stage all the bacterial strains inoculated separately enhanced pod number, seed number and total NPK compared to uninoculated control plants. This study suggests that bacteria associated with root and stem nodules can be a promising resource to enhance nodulation, PGP and crop yields in chickpea.
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Affiliation(s)
- Mohammad Imran Mir
- Department of Botany, UCS, Osmania University, Hyderabad, 500007, Telangana, India
| | - B Kiran Kumar
- Department of Botany, UCS, Osmania University, Hyderabad, 500007, Telangana, India
| | - Subramaniam Gopalakrishnan
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Hyderabad, 502319, Telangana, India
| | - Srinivas Vadlamudi
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Hyderabad, 502319, Telangana, India
| | - Bee Hameeda
- Department of Microbiology, UCS, Osmania University, Hyderabad, 500007, Telangana, India
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19
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Wang H, Liu R, You MP, Barbetti MJ, Chen Y. Pathogen Biocontrol Using Plant Growth-Promoting Bacteria (PGPR): Role of Bacterial Diversity. Microorganisms 2021; 9:microorganisms9091988. [PMID: 34576883 PMCID: PMC8470069 DOI: 10.3390/microorganisms9091988] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 09/10/2021] [Accepted: 09/15/2021] [Indexed: 11/16/2022] Open
Abstract
A vast microbial community inhabits in the rhizosphere, among which, specialized bacteria known as Plant Growth-Promoting Rhizobacteria (PGPR) confer benefits to host plants including growth promotion and disease suppression. PGPR taxa vary in the ways whereby they curtail the negative effects of invading plant pathogens. However, a cumulative or synergistic effect does not always ensue when a bacterial consortium is used. In this review, we reassess the disease-suppressive mechanisms of PGPR and present explanations and illustrations for functional diversity and/or stability among PGPR taxa regarding these mechanisms. We also provide evidence of benefits when PGPR mixtures, rather than individuals, are used for protecting crops from various diseases, and underscore the critical determinant factors for successful use of PGPR mixtures. Then, we evaluate the challenges of and limitations to achieving the desired outcomes from strain/species-rich bacterial assemblages, particularly in relation to their role for plant disease management. In addition, towards locating additive or synergistic outcomes, we highlight why and how the benefits conferred need to be categorized and quantified when different strains/species of PGPR are used in combinations. Finally, we highlight the critical approaches needed for developing PGPR mixtures with improved efficacy and stability as biocontrols for utilization in agricultural fields.
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Affiliation(s)
- Hao Wang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences, Xianyang 712100, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Runjin Liu
- Institute of Mycorrhizal Biotechnology, Qingdao Agricultural University, Qingdao 266109, China;
| | - Ming Pei You
- The UWA Institute of Agriculture, and School of Agriculture and Environment, The University of Western Australia, LB 5005, Perth, WA 6009, Australia; (M.P.Y.); (M.J.B.)
| | - Martin J. Barbetti
- The UWA Institute of Agriculture, and School of Agriculture and Environment, The University of Western Australia, LB 5005, Perth, WA 6009, Australia; (M.P.Y.); (M.J.B.)
| | - Yinglong Chen
- The UWA Institute of Agriculture, and School of Agriculture and Environment, The University of Western Australia, LB 5005, Perth, WA 6009, Australia; (M.P.Y.); (M.J.B.)
- Correspondence:
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20
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Ahmad T, Bashir A, Farooq S, Riyaz-Ul-Hassan S. Burkholderia gladioli E39CS3, an endophyte of Crocus sativus Linn., induces host resistance against corm-rot caused by Fusarium oxysporum. J Appl Microbiol 2021; 132:495-508. [PMID: 34170610 DOI: 10.1111/jam.15190] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/19/2021] [Accepted: 06/13/2021] [Indexed: 01/02/2023]
Abstract
AIM To investigate the role of the leading saffron endophyte Burkholderia gladioli strain E39CS3 (BG-E39) in the inhibition of corm-rot and induced systemic resistance (ISR) in the host against the saffron specific pathogen, Fusarium oxysporum. METHODS AND RESULTS We studied the interaction between BG-E39 and the corm-rot pathogen F. oxysporum in vitro and in vivo. BG-E39 strongly inhibited both the F. oxysporum strains and other saffron-specific and non-specific pathogens used in this study. Confrontation and microscopic analyses revealed that the endophyte possessed fungicidal activity against the pathogens and effectively induced cell death in the mycelia. The endophyte produced chitinases as well as β-1,3-glucanase that may be involved in the pathogen cell wall degradation. BG-E39 did not cause corm-rot in Crocus sativus and the closely related plant, Gladiolus, thus establishing that it is non-pathogenic to these plants. The endophyte reduced corm-rot through antibiosis and enhanced the endogenous jasmonic acid (JA) levels and expression of JA-regulated and other plant defence genes. CONCLUSIONS The bacterial endophyte BG-E39 provides resistance to the host plant against F. oxysporum corm-rot in nature. SIGNIFICANCE AND IMPACT OF THE STUDY The current study discovers the role of the saffron endophyte BG-E39 in providing resistance to the host against corm-rot. Therefore, this endophyte is a potential candidate for developing a microbial formulation for the biocontrol of the most common disease of C. sativus.
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Affiliation(s)
- Tanveer Ahmad
- Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Srinagar, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Abid Bashir
- Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Srinagar, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Sadaqat Farooq
- Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Srinagar, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Syed Riyaz-Ul-Hassan
- Fermentation and Microbial Biotechnology Division, CSIR-Indian Institute of Integrative Medicine, Srinagar, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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21
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Shariffah-Muzaimah SA, Idris AS, Nur-Rashyeda R, Naidu Y, ZainolHilmi NH, Norman K. Impact of pre-inoculating soil with Streptomyces sp. GanoSA1 on oil palm growth and Ganoderma disease development. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101814] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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22
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Meena M, Swapnil P, Divyanshu K, Kumar S, Harish, Tripathi YN, Zehra A, Marwal A, Upadhyay RS. PGPR-mediated induction of systemic resistance and physiochemical alterations in plants against the pathogens: Current perspectives. J Basic Microbiol 2020; 60:828-861. [PMID: 32815221 DOI: 10.1002/jobm.202000370] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/28/2020] [Accepted: 08/02/2020] [Indexed: 12/14/2022]
Abstract
Plant growth-promoting rhizobacteria (PGPR) are diverse groups of plant-associated microorganisms, which can reduce the severity or incidence of disease during antagonism among bacteria and soil-borne pathogens, as well as by influencing a systemic resistance to elicit defense response in host plants. An amalgamation of various strains of PGPR has improved the efficacy by enhancing the systemic resistance opposed to various pathogens affecting the crop. Many PGPR used with seed treatment causes structural improvement of the cell wall and physiological/biochemical changes leading to the synthesis of proteins, peptides, and chemicals occupied in plant defense mechanisms. The major determinants of PGPR-mediated induced systemic resistance (ISR) are lipopolysaccharides, lipopeptides, siderophores, pyocyanin, antibiotics 2,4-diacetylphoroglucinol, the volatile 2,3-butanediol, N-alkylated benzylamine, and iron-regulated compounds. Many PGPR inoculants have been commercialized and these inoculants consequently aid in the improvement of crop growth yield and provide effective reinforcement to the crop from disease, whereas other inoculants are used as biofertilizers for native as well as crops growing at diverse extreme habitat and exhibit multifunctional plant growth-promoting attributes. A number of applications of PGPR formulation are needed to maintain the resistance levels in crop plants. Several microarray-based studies have been done to identify the genes, which are associated with PGPR-induced systemic resistance. Identification of these genes associated with ISR-mediating disease suppression and biochemical changes in the crop plant is one of the essential steps in understanding the disease resistance mechanisms in crops. Therefore, in this review, we discuss the PGPR-mediated innovative methods, focusing on the mode of action of compounds authorized that may be significant in the development contributing to enhance plant growth, disease resistance, and serve as an efficient bioinoculants for sustainable agriculture. The review also highlights current research progress in this field with a special emphasis on challenges, limitations, and their environmental and economic advantages.
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Affiliation(s)
- Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, India.,Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Prashant Swapnil
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, India.,Department of Botany, Acharya Narendra Dev College, University of Delhi, New Delhi, India
| | - Kumari Divyanshu
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Sunil Kumar
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Harish
- Plant Biotechnology Laboratory, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Yashoda Nandan Tripathi
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Andleeb Zehra
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Avinash Marwal
- Department of Biotechnology, Vigyan Bhawan-Block B, New Campus, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Ram Sanmukh Upadhyay
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, India
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Relevance of Plant Growth Promoting Microorganisms and Their Derived Compounds, in the Face of Climate Change. AGRONOMY-BASEL 2020. [DOI: 10.3390/agronomy10081179] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Climate change has already affected food security in many parts of the world, and this situation will worsen if nothing is done to combat it. Unfortunately, agriculture is a meaningful driver of climate change, through greenhouse gas emissions from nitrogen-based fertilizer, methane from animals and animal manure, as well as deforestation to obtain more land for agriculture. Therefore, the global agricultural sector should minimize greenhouse gas emissions in order to slow climate change. The objective of this review is to point out the various ways plant growth promoting microorganisms (PGPM) can be used to enhance crop production amidst climate change challenges, and effects of climate change on more conventional challenges, such as: weeds, pests, pathogens, salinity, drought, etc. Current knowledge regarding microbial inoculant technology is discussed. Pros and cons of single inoculants, microbial consortia and microbial compounds are discussed. A range of microbes and microbe derived compounds that have been reported to enhance plant growth amidst a range of biotic and abiotic stresses, and microbe-based products that are already on the market as agroinputs, are a focus. This review will provide the reader with a clearer understanding of current trends in microbial inoculants and how they can be used to enhance crop production amidst climate change challenges.
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Chowdhury SK, Majumdar S, Mandal V. Application of Bacillus sp. LBF-01 in Capsicum annuum plant reduces the fungicide use against Fusarium oxysporum. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Yadav SK, Das J, Kumar R, Jha G. Calcium regulates the mycophagous ability of Burkholderia gladioli strain NGJ1 in a type III secretion system-dependent manner. BMC Microbiol 2020; 20:216. [PMID: 32689944 PMCID: PMC7372643 DOI: 10.1186/s12866-020-01897-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 07/12/2020] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND A rice associated bacterium Burkholderia gladioli strain NGJ1 demonstrates mycophagy, a phenomenon wherein bacteria feed on fungi. Previously, we have reported that NGJ1 utilizes type III secretion system (T3SS) to deliver a prophage tail-like protein (Bg_9562) into fungal cells to establish mycophagy. RESULTS In this study, we report that calcium ion concentration influences the mycophagous ability of NGJ1 on Rhizoctonia solani, an important fungal pathogen. The calcium limiting condition promotes mycophagy while high calcium environment prevents it. The expression of various T3SS apparatus encoding genes of NGJ1 was induced and secretion of several potential T3SS effector proteins (including Bg_9562) into extracellular milieu was triggered under calcium limiting condition. Using LC-MS/MS proteome analysis, we identified several calcium regulated T3SS effector proteins of NGJ1. The expression of genes encoding some of these effector proteins was upregulated during mycophagous interaction of NGJ1 with R. solani. Further, mutation of one of these genes (endo-β-1, 3- glucanase) rendered the mutant NGJ1 bacterium defective in mycophagy while complementation with full length copy of the gene restored its mycophagous activity. CONCLUSION Our study provides evidence that low calcium environment triggers secretion of various T3SS effectors proteins into the extracellular milieu and suggests the importance of cocktail of these proteins in promoting mycophagy.
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Affiliation(s)
- Sunil Kumar Yadav
- Plant Microbe Interactions Laboratory, National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Joyati Das
- Plant Microbe Interactions Laboratory, National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Rahul Kumar
- Plant Microbe Interactions Laboratory, National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India
| | - Gopaljee Jha
- Plant Microbe Interactions Laboratory, National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, 110067, India.
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Humidity governs the wall-inhabiting fungal community composition in a 1600-year tomb of Emperor Yang. Sci Rep 2020; 10:8421. [PMID: 32439991 PMCID: PMC7242468 DOI: 10.1038/s41598-020-65478-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 05/01/2020] [Indexed: 11/08/2022] Open
Abstract
Biodeterioration caused by filamentous fungi is often a threat to the architectural heritage (i.e. tombs and historic sites). To specifically understand the deterioration phenomena caused by microorganisms in tombs and how these are shaped due to various environmental factors, the fungal communities in the coffin chamber of the Chinese emperor Yang (BC 569-618) were investigated at different heights using denaturant gradient gel electrophoresis (DGGE) fingerprinting. The associated environmental conditions, such as humidity, temperature, height and illumination, were also assessed. The results showed that a great diversity of fungal species (Cordyceps, Fusarium, Harpochytrium, Emericellopsis, Volutella, Cladosporium, Stachybotrys, Trichoderma, Cochlonema and two unknown fungal species) was present in emperor Yang's coffin chamber. The predominant species were Stachybotrys, Fusarium, Trichoderma and Cochlonema. Redundancy analysis (RDA) indicated that humidity, temperature, height and illumination were the most significantly related factors shaping the fungal communities. Humidity showed the highest degree of variance description (19.2%) than all other environmental factors, followed by illumination (18.3%) and height (12.8%). Furthermore, fungal richness and diversity indices showed a positive correlation with humidity (p < 0.05). These results help in understanding the fungal community in tombs, promoting the mitigation of deterioration phenomena of such building heritage for the present and future.
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Explorations of Tolerant Trichoderma spp. as Plant Growth Promoter and Biocontrol Agent against Colletotrichum falcatum. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2020. [DOI: 10.22207/jpam.14.1.34] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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28
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Subrahmanyam G, Kumar A, Sandilya SP, Chutia M, Yadav AN. Diversity, Plant Growth Promoting Attributes, and Agricultural Applications of Rhizospheric Microbes. SUSTAINABLE DEVELOPMENT AND BIODIVERSITY 2020. [DOI: 10.1007/978-3-030-38453-1_1] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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29
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Abro MA, Sun X, Li X, Jatoi GH, Guo LD. Biocontrol Potential of Fungal Endophytes against Fusarium oxysporum f. sp. cucumerinum Causing Wilt in Cucumber. THE PLANT PATHOLOGY JOURNAL 2019; 35:598-608. [PMID: 31832040 PMCID: PMC6901257 DOI: 10.5423/ppj.oa.05.2019.0129] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 08/21/2019] [Accepted: 08/22/2019] [Indexed: 05/27/2023]
Abstract
Endophytic fungi have received much attention as plant growth promoters as well as biological control agents against many plant pathogens. In this study, 30 endophytic fungal species, isolated from various plants in China, were evaluated using in vitro dual culture assay against Fusarium oxysporum f. sp. cucumerinum, causing wilt in cucumber. The results of the present study clearly showed that all the 30 endophytic fungal isolates were highly capable of inhibiting the mycelial colony growth of Fusarium oxysporum f. sp. cucumerinum with inhibition % over 66% as compared to control treatments. Among all of them, 5 isolates were highly effective such as, Penicillium sp., Guignardia mangiferae, Hypocrea sp., Neurospora sp., Eupenicillium javanicum, and Lasiodiplodia theobromae, respectively. The Penicillium sp. and Hypocrea sp. were highly effective as compared to other isolates. From in vitro results 10 best isolates were selected for greenhouse studies. The results of the greenhouse studies showed that among all of them 3 endophytic fungal isolates successfully suppressed wilt severity when co-inoculation with pathogen Fusarium. oxysporum f. sp. cucumerinum. The endophytic fungi also enhanced plant growth parameters of the host plants, the antagonistic fungal isolates increased over all plant height, aerial fresh, and dry weight as compared to control.
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Affiliation(s)
- Manzoor Ali Abro
- Department of Plant Pathology, Faculty of Crop Protection, Sindh Agriculture University Tandojam, Hyderabad 70060,
Pakistan
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences No. 1, Beijing 100101,
China
| | - Xiang Sun
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences No. 1, Beijing 100101,
China
| | - Xingchun Li
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences No. 1, Beijing 100101,
China
| | - Ghulam Hussain Jatoi
- Department of Plant Pathology, Faculty of Crop Protection, Sindh Agriculture University Tandojam, Hyderabad 70060,
Pakistan
| | - Liang-Dong Guo
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences No. 1, Beijing 100101,
China
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30
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Ou Y, Penton CR, Geisen S, Shen Z, Sun Y, Lv N, Wang B, Ruan Y, Xiong W, Li R, Shen Q. Deciphering Underlying Drivers of Disease Suppressiveness Against Pathogenic Fusarium oxysporum. Front Microbiol 2019; 10:2535. [PMID: 31781059 PMCID: PMC6861331 DOI: 10.3389/fmicb.2019.02535] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 10/21/2019] [Indexed: 11/13/2022] Open
Abstract
Soil-borne diseases, especially those caused by fungal pathogens, lead to profound annual yield losses. One key example for such a disease is Fusarium wilt disease in banana. In some soils, plants do not show disease symptoms, even if the disease-causing pathogens are present. However, the underlying agents that make soils suppressive against Fusarium wilt remain elusive. In this study, we aimed to determine the underlying microbial agents governing soil disease-suppressiveness. We traced the shift of microbiomes during the invasion of disease-causing Fusarium oxysporum f. sp. cubense in disease-suppressive and disease-conducive soils. We found distinct microbiome structures in the suppressive and conducive soils after pathogen invasion. The alpha diversity indices increased (or did not significantly change) and decreased, respectively, in the suppressive and conducive soils, indicating that the shift pattern of the microbiome with pathogen invasion was notably different between the suppressive and conductive soils. Microbiome networks were more complex with higher numbers of links and revealed more negative links, especially between bacterial taxa and the disease-causing Fusarium, in suppressive soils than in conducive soils. We identified the bacterial genera Chryseolinea, Terrimonas, and Ohtaekwangia as key groups that likely confer suppressiveness against disease-causing Fusarium. Overall, our study provides the first insights into agents potentially underlying the disease suppressiveness of soils against Fusarium wilt pathogen invasion. The results of this study may help to guide efforts for targeted cultivation and application of these potential biocontrol agents, which might lead to the development of effective biocontrol agents against Fusarium wilt disease.
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Affiliation(s)
- Yannan Ou
- Jiangsu Provincial Key Lab for Solid Organic Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, China
| | - C Ryan Penton
- Center for Fundamental and Applied Microbiomics, Biodesign Institute, College of Integrative Sciences and Arts, Arizona State University, Mesa, AZ, United States
| | - Stefan Geisen
- Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, Netherlands
| | - Zongzhuan Shen
- Jiangsu Provincial Key Lab for Solid Organic Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, China
| | - Yifei Sun
- Jiangsu Provincial Key Lab for Solid Organic Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, China
| | - Nana Lv
- Jiangsu Provincial Key Lab for Solid Organic Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, China
| | - Beibei Wang
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, China
| | - Yunze Ruan
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, China
| | - Wu Xiong
- Ecology and Biodiversity Group, Department of Biology, Institute of Environmental Biology, Utrecht University, Utrecht, Netherlands
| | - Rong Li
- Jiangsu Provincial Key Lab for Solid Organic Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, China.,Ecology and Biodiversity Group, Department of Biology, Institute of Environmental Biology, Utrecht University, Utrecht, Netherlands
| | - Qirong Shen
- Jiangsu Provincial Key Lab for Solid Organic Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, China
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31
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Abassi S, Emtiazi G, Hosseini-Abari A, Kim BG. Chitooligosaccharides and Thermostable Chitinase Against Vulvovaginal Candidiasis and Saprophyte Fungi: LC Mass Studies of Shrimp Shell Fermentation by Bacillus altitudinis. Curr Microbiol 2019; 77:40-48. [PMID: 31659402 DOI: 10.1007/s00284-019-01779-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/19/2019] [Indexed: 01/20/2023]
Abstract
Some patients with candidiasis seek alternatives drug to treat vaginal yeast infection like herbal preparations and probiotics. However, the effectiveness of such treatments has not received much study. In this research, the unique chitinotrophic Bacillus was isolated on shrimp shell from salt lakes and identified as Bacillus altitudinis by 16SRNA sequencing. This strain produced a novel chitin-oligosaccharide material and thermostable chitinase (5.1 units/ml) during 4 days incubation on shrimp shell medium; nevertheless, its growth on nutrient agar was negative. The zymogram showed less than 50 kD protein responsible for chitinase activities. The LC/MS detection of concentrate fermented products showed the production of oligosaccharide during chitin fermentation. As results of shrimp shell degradation, 65.6 mg/l protein, 73.4 mg/l N-acetyl glucose amine, and oligosaccharide were produced. Synergism activities of chitooligosaccharide and chitinase from this strain against fungi and pathogen candida (staining with methylene blue showed that almost 50% of 106 cells were died during 6 h) are promising for new anti-fungal drug with no side effect.
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Affiliation(s)
- Soheila Abassi
- Department of Biology, Faculty of Sciences, University of Isfahan, Isfahan, Iran
| | - Giti Emtiazi
- Department of Biology, Faculty of Sciences, University of Isfahan, Isfahan, Iran.
| | | | - Byung Gee Kim
- School of Chemical and Biological Engineering, Seoul National University, Gwank-gu, Seoul, Republic of Korea
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Dual species transcript profiling during the interaction between banana (Musa acuminata) and the fungal pathogen Fusarium oxysporum f. sp. cubense. BMC Genomics 2019; 20:519. [PMID: 31234790 PMCID: PMC6591919 DOI: 10.1186/s12864-019-5902-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 06/12/2019] [Indexed: 12/15/2022] Open
Abstract
Background Banana wilt disease, caused by Fusarium oxysporum f. sp. cubense Tropical Race 4 (Foc TR4), is one of the most devastating diseases in banana (Musa spp.). Foc is a soil borne pathogen that causes rot of the roots or wilt of leaves by colonizing the xylem vessels. The dual RNA sequencing is used to simultaneously assess the transcriptomes of pathogen and host. This method greatly helps to understand the responses of pathogen and host to each other and discover the potential pathogenic mechanism. Results Plantlets of two economically important banana cultivars, Foc TR4 less susceptible cultivar NK and susceptible cultivar BX, were used to research the Foc-banana interaction mechanism. Notably, the infected NK had more significantly up-regulated genes on the respiration machinery including TCA cycle, glyoxylate, glycerol, and glycolysis compared to BX at 27 h post inoculation (hpi). In addition, genes involved in plant-pathogen interaction, starch, sucrose, linolenic acid and sphingolipid metabolisms were uniquely more greatly induced in BX than those in NK during the whole infection. Genes related to the biosynthesis and metabolism of SA and JA were greatly induced in the infected NK; while auxin and abscisic acid metabolisms related genes were strongly stimulated in the infected BX at 27 hpi. Furthermore, most of fungal genes were more highly expressed in the roots of BX than in those of NK. The fungal genes related to pathogenicity, pectin and chitin metabolism, reactive oxygen scavenging played the important roles during the infection of Foc. CCP1 (cytochrome c peroxidase 1) was verified to involve in cellulose utilization, oxidative stress response and pathogenicity of fungus. Conclusion The transcriptome indicated that NK had much faster defense response against Foc TR4 than BX and the expression levels of fungal genes were higher in BX than those in NK. The metabolisms of carbon, nitrogen, and signal transduction molecular were differentially involved in pathogen infection in BX and NK. Additionally, the putative virulence associated fungal genes involved in colonization, nutrition acquirement and transport provided more insights into the infection process of Foc TR4 in banana roots. Electronic supplementary material The online version of this article (10.1186/s12864-019-5902-z) contains supplementary material, which is available to authorized users.
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Zhang L, Li W, Tao Y, Zhao S, Yao L, Cai Y, Niu Q. Overexpression of the Key Virulence Factor 1,3-1,4-β-d-Glucanase in the Endophytic Bacterium Bacillus halotolerans Y6 To Improve Verticillium Resistance in Cotton. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6828-6836. [PMID: 31136163 DOI: 10.1021/acs.jafc.9b00728] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Verticillium wilt, caused by Verticillium dahliae, results in a dramatic loss of cotton yields in China. There is great potential for biocontrol to manage this destructive crop disease. In this study, we obtained the endophytic bacterium Bacillus halotolerans Y6 from Verticillium wilt-resistant cotton Gossypium barbadense Xinhai15; this bacterium possesses strong antagonistic abilities that inhibit V. dahliae spore germination and mycelial growth. The results of the enzyme activity assay, heterologous expression, and gene knockdown showed that the key virulence factor of Y6 for antagonizing V. dahliae was β -glucanase Bgy6. To facilitate field tests of biological control, we constructed the homologous Bgy6-overexpression strain OY6. Compared with the wild-type Y6 strain, the β-glucanase activity of OY6 was increased by 91.79%, and the inhibition rate of OY6 against V. dahliae V991 exceeded 96.7%. Moreover, the spores of V. dahliae V991 treated with OY6 showed more mucus and larger holes on the surface, as observed by scanning electron microscopy. Potting test results illustrated that both OY6 and Y6 could improve the resistance of upland cotton to Verticillium wilt. With the inoculation of V. dahliae V991 for 45 days, the disease index of G. hirsutum TM-1 treated with OY6 was only 8.33, which was significantly lower than that in plants treated with the wild-type strain Y6 (17.86) or the controls without bacteria (35.94). Our research provides a new idea for the control of Verticillium wilt in upland cotton via transforming endophytic bacteria of Verticillium wilt-resistant cotton and proposes a new solution to prevent and control Verticillium wilt.
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Affiliation(s)
- Lin Zhang
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, School of Life Sciences , Henan University , Kaifeng , Henan 475001 , P. R. China
- Department of Life Science and Biotechnology , Nanyang Normal University , Nanyang 473000 , P. R. China
| | - Wenpeng Li
- Department of Life Science and Biotechnology , Nanyang Normal University , Nanyang 473000 , P. R. China
| | - Ye Tao
- Department of Life Science and Biotechnology , Nanyang Normal University , Nanyang 473000 , P. R. China
| | - Suya Zhao
- Department of Life Science and Biotechnology , Nanyang Normal University , Nanyang 473000 , P. R. China
| | - Lunguang Yao
- China-U.K.-NYNU-RRes Joint Laboratory of Insect Biology , Nanyang Normal University , Nanyang 473000 , P.R. China
| | - Yingfan Cai
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, School of Life Sciences , Henan University , Kaifeng , Henan 475001 , P. R. China
| | - Qiuhong Niu
- Department of Life Science and Biotechnology , Nanyang Normal University , Nanyang 473000 , P. R. China
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A Possibility of using Antagonistic Bacterial Isolates in Controlling Fusarium Wilt of Chrysanth (Chrysanthemum sp.). JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2019. [DOI: 10.22207/jpam.13.1.32] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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35
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Lv YY, Wang CL, Feng GD, Yao Q, Su BL, Li AZ, Zhu HH. Chitinophaga flava sp. nov., isolated from monsoon evergreen broad-leaved forest soil. Int J Syst Evol Microbiol 2019; 69:625-630. [PMID: 30688633 DOI: 10.1099/ijsem.0.003116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, aerobic, non-motile strain, K3CV102501T, was isolated from a soil sample collected from the monsoon evergreen broad-leaved forest of Dinghushan Biosphere Reserve located in Guangdong Province, PR China. The primal colony of strain K3CV102501T was very similar to the fruiting body of myxobacteria on the original isolation plates. Young cultures of strain K3CV102501T contained long (2-4×0.4-0.5 µm) filamentous cells and divided into rod shapes (0.7-1.0×0.6-0.8 µm) after 4 days of incubation at 28 °C. Strain K3CV102501T grew at pH 6.0-9.5 (optimum, pH 6.5-7.5) and 7-42 °C (optimum, 28-35 °C). Phylogenetic analysis based on its 16S rRNA gene sequence showed that strain K3CV102501T belonged to the genus Chitinophagaand showed the highest similarity to C.hitinophaga jiangningensis JCM 19354T (96.9 %). The DNA G+C content of the type strain was 46.6 mol%. The major fatty acids (>10 %) were iso-C15 : 0, C16 : 1ω5c and iso-C17 : 0 3-OH. The major polar lipids were phosphatidylethanolamine and an unidentified aminolipid. Menaquinone-7 was the predominant quinone. The phenotypic, chemotaxonomic and phylogenetic data clearly showed that strain K3CV102501T represents a novel species of the genus Chitinophaga, for which the name Chitinophaga flava sp. nov. is proposed. The type strain is K3CV102501T (=KCTC 62435T=GDMCC 1.1325T).
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Affiliation(s)
- Ying-Ying Lv
- 1State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Open Laboratory of Applied Microbiology, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Chun-Ling Wang
- 1State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Open Laboratory of Applied Microbiology, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Guang-da Feng
- 1State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Open Laboratory of Applied Microbiology, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Qing Yao
- 2South China Agricultural University, Guangzhou, Guangdong 510642, PR China
| | - Bu-Li Su
- 1State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Open Laboratory of Applied Microbiology, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - An-Zhang Li
- 1State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Open Laboratory of Applied Microbiology, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Hong-Hui Zhu
- 1State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Open Laboratory of Applied Microbiology, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
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Mustafa S, Kabir S, Shabbir U, Batool R. Plant growth promoting rhizobacteria in sustainable agriculture: from theoretical to pragmatic approach. Symbiosis 2019. [DOI: 10.1007/s13199-019-00602-w] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Jha Y. Endophytic bacteria mediated anti-autophagy and induced catalase, β-1,3-glucanases gene in paddy after infection with pathogen Pyricularia grisea. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/s42360-018-00106-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Actinomycetes: an unexplored microorganisms for plant growth promotion and biocontrol in vegetable crops. World J Microbiol Biotechnol 2018; 34:132. [PMID: 30105532 DOI: 10.1007/s11274-018-2517-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 08/09/2018] [Indexed: 12/24/2022]
Abstract
Actinomycetes, a Gram positive bacteria, well reported as a source of antibiotics, also possess potential to control various plant pathogens, besides acting as plant growth promoting agent. Chemicals in different forms are extensively being used in vegetable farming, adversely affecting the environment and consumer health. Microbial agent like actinomycetes can substantially replace these harmful chemicals, and have now started finding a place as an important input in to farming practices. Only selected vegetable crops belonging to 11 different families have been explored with use of actinomycetes as biocontrol and plant growth promoting agent till now. It provides ample opportunities to vegetable researchers, to further explore with use of this very important group of microorganisms, in order to achieve even higher production level of safe vegetables. Mycostop and Actinovate are two actinomycetes based formulations globally available for use in vegetable farming as a substitute for chemical formulations. Present review article has summarized the literature available on use of actinomycetes in vegetable farming. Existing wide gap in knowledge, and potential thrust areas for future research have also been projected.
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Influence of diazotrophic bacteria on nodulation, nitrogen fixation, growth promotion and yield traits in five cultivars of chickpea. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.05.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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Vijayabharathi R, Gopalakrishnan S, Sathya A, Srinivas V, Sharma M. Deciphering the tri-dimensional effect of endophytic Streptomyces sp. on chickpea for plant growth promotion, helper effect with Mesorhizobium ciceri and host-plant resistance induction against Botrytis cinerea. Microb Pathog 2018; 122:98-107. [PMID: 29894808 DOI: 10.1016/j.micpath.2018.06.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 05/09/2018] [Accepted: 06/08/2018] [Indexed: 10/14/2022]
Abstract
A total of 219 endophytic actinobacteria, isolated from roots, stems and leaves of chickpea, were characterized for antagonistic potential against Botrytis cinerea, causal organism of Botrytis grey mold (BGM) disease, in chickpea. Among them, three most potential endophytes, AUR2, AUR4 and ARR4 were further characterized for their plant growth-promoting (PGP) and nodulating potentials and host-plant resistance against B. cinerea, in chickpea. The sequences of 16 S rDNA gene of the three endophytes were matched with Streptomyces but different species. In planta, the isolate AUR4 alone was able to significantly enhance PGP traits including seed numbers (11.8 vs. 9.8/Plant), seed weight (8 vs. 6.8 g/Plant), pod numbers (13.6 vs. 11.5/Plant), pod weight (9.3 vs. 7.5 g/Plant) and biomass (10.9 vs. 8 g/Plant) over the un-inoculated control in chickpea genotype JG11. Interestingly, consortium of the selected endophytes, AUR2, AUR4 and ARR4 were found less effective than single inoculation. Co-inoculation of the selected endophytes with Mesorhizobium ciceri significantly enhanced nodulation and nitrogenase activity in five chickpea genotypes including ICCV2, ICCV10, ICC4958, Annigeri and JG11 over the un-inoculated control. The selected endophytes showed antagonistic potential in planta by significant reduction of disease incidence (28─52%) in both single inoculation and consortium treatments over the un-inoculated control across the genotypes ICC4954 (susceptible), ICCV05530 (moderately resistant) and JG11 (unknown resistance). Further, antioxidant enzymes such as superoxide dismutase, catalase, ascorbate peroxidase, guaiacol peroxidase, glutathione reductase, phenylalanine ammonia-lyase and polyphenol oxidase and phenolics were found induced in the leaves of chickpea inoculated with selected endophytes over un-inoculated control. Principal component analysis revealed that, the antioxidant enzymes and phenolics were found in the magnitude of ICC4954 < JG11 < ICCV05530 which correlates with their resistance level. The selected endophytes enhanced the plant growth and also host plant resistance against BGM in chickpea.
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Affiliation(s)
- Rajendran Vijayabharathi
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, 502324, Hyderabad, Telangana, India.
| | - Subramaniam Gopalakrishnan
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, 502324, Hyderabad, Telangana, India.
| | - Arumugam Sathya
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, 502324, Hyderabad, Telangana, India
| | - Vadlamudi Srinivas
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, 502324, Hyderabad, Telangana, India
| | - Mamta Sharma
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, 502324, Hyderabad, Telangana, India
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Lv YY, Zhang XJ, Li AZ, Zou WL, Feng GD, Zhu HH. Chitinophaga varians sp. nov., isolated from forest soil. Int J Syst Evol Microbiol 2018; 68:2139-2144. [PMID: 29775176 DOI: 10.1099/ijsem.0.002700] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, aerobic, non-motile bacterium, designated strain 10-7W-9003T, was isolated from the forest soil of Limushan National Forest Park, south-east China (19° 10' 42″ N, 109° 44' 45″ E). Strain 10-7W-9003T showed a shape change during the course of culture from long filamentous cells (5-10×0.4-0.5 µm) at 5-36 h, to rod shaped (1.0-1.5×0.5-0.7 µm) with inoculation after 2 days. It grew optimally at 28-30 °C and pH 6.5-7.5. On the basis of 16S rRNA gene sequence analysis, it belongs to the genus Chitinophaga and is most closely related to Chitinophaga eiseniae KACC 13774T and Chitinophaga qingshengii JCM 30026T, with 16S rRNA gene sequences similarities of 98.8 and 98.3 %, respectively. However, the DNA-DNA hybridization study showed that strain 10-7W-9003T shared relatively low relatedness values with KACC 13774T (21.8 %) and JCM 30026T (20.4 %), respectively. The major fatty acids (>10 %) were iso-C15 : 0, C16 : 1ω5c and iso-C17 : 0 3-OH. The genomic DNA G+C content was 50.7 mol%. It contained MK-7 as the major quinone. The phenotypic, chemotaxonomic and phylogenetic data clearly showed that strain 10-7W-9003T represents a novel species of the genus Chitinophaga, for which the name Chitinophaga varians sp. nov. is proposed. The type strain is 10-7W-9003T (=GDMCC 1.1252T=KACC 19415T=KCTC 52926T).
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Affiliation(s)
- Ying-Ying Lv
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Xian-Jiao Zhang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - An-Zhang Li
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Wei-Ling Zou
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Guang-da Feng
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
| | - Hong-Hui Zhu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Microbial Culture Collection Center (GDMCC), Guangdong Institute of Microbiology, Guangzhou 510070, PR China
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Kamil FH, Saeed EE, El-Tarabily KA, AbuQamar SF. Biological Control of Mango Dieback Disease Caused by Lasiodiplodia theobromae Using Streptomycete and Non-streptomycete Actinobacteria in the United Arab Emirates. Front Microbiol 2018; 9:829. [PMID: 29780366 PMCID: PMC5945903 DOI: 10.3389/fmicb.2018.00829] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 04/11/2018] [Indexed: 11/13/2022] Open
Abstract
Dieback caused by the fungus Lasiodiplodia theobromae is an important disease on mango plantations in the United Arab Emirates (UAE). In this study, 53 actinobacterial isolates were obtained from mango rhizosphere soil in the UAE, of which 35 (66%) were classified as streptomycetes (SA) and 18 (34%) as non-streptomycetes (NSA). Among these isolates, 19 (12 SA and 7 NSA) showed antagonistic activities against L. theobromae associated with either the production of diffusible antifungal metabolites, extracellular cell-wall-degrading enzymes (CWDEs), or both. Using a "novel" mango fruit bioassay, all isolates were screened in vivo for their abilities to reduce lesion severity on fruits inoculated with L. theobromae. Three isolates, two belonging to Streptomyces and one to Micromonospora spp., showed the strongest inhibitory effect against this pathogen in vitro and were therefore selected for tests on mango seedlings. Our results revealed that the antifungal action of S. samsunensis UAE1 was related to antibiosis, and the production of CWDEs (i.e., chitinase) and siderophores; whilst S. cavourensis UAE1 and M. tulbaghiae UAE1 were considered to be associated with antibiotic- and CWDE-production, respectively. Pre-inoculation in greenhouse experiments with the most promising actinobacterial isolates resulted in very high levels of disease protection in mango seedlings subsequently inoculated with the pathogen. This was evident by the dramatic reduction in the estimated disease severity indices of the mango dieback of individual biocontrol agent (BCA) applications compared with the pathogen alone, confirming their potential in the management of mango dieback disease. L. theobromae-infected mango seedlings treated with S. samsunensis showed significantly reduced number of defoliated leaves and conidia counts of L. theobromae by 2- and 4-fold, respectively, in comparison to the other two BCA applications. This indicates that the synergistic antifungal effects of S. samsunensis using multiple modes of action retarded the in planta invasion of L. theobromae. This is the first report of BCA effects against L. theobromae on mango seedlings by microbial antagonists. It is also the first report of actinobacteria naturally existing in the soils of the UAE or elsewhere that show the ability to suppress the mango dieback disease.
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Affiliation(s)
- Fatima H Kamil
- Department of Biology, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Esam E Saeed
- Department of Biology, United Arab Emirates University, Al-Ain, United Arab Emirates
| | - Khaled A El-Tarabily
- Department of Biology, United Arab Emirates University, Al-Ain, United Arab Emirates.,School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA, Australia
| | - Synan F AbuQamar
- Department of Biology, United Arab Emirates University, Al-Ain, United Arab Emirates
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43
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Microbial and viral chitinases: Attractive biopesticides for integrated pest management. Biotechnol Adv 2018; 36:818-838. [DOI: 10.1016/j.biotechadv.2018.01.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 12/28/2017] [Accepted: 01/02/2018] [Indexed: 02/01/2023]
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44
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Vurukonda SSKP, Giovanardi D, Stefani E. Plant Growth Promoting and Biocontrol Activity of Streptomyces spp. as Endophytes. Int J Mol Sci 2018; 19:E952. [PMID: 29565834 PMCID: PMC5979581 DOI: 10.3390/ijms19040952] [Citation(s) in RCA: 218] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 03/12/2018] [Accepted: 03/16/2018] [Indexed: 01/12/2023] Open
Abstract
There has been many recent studies on the use of microbial antagonists to control diseases incited by soilborne and airborne plant pathogenic bacteria and fungi, in an attempt to replace existing methods of chemical control and avoid extensive use of fungicides, which often lead to resistance in plant pathogens. In agriculture, plant growth-promoting and biocontrol microorganisms have emerged as safe alternatives to chemical pesticides. Streptomyces spp. and their metabolites may have great potential as excellent agents for controlling various fungal and bacterial phytopathogens. Streptomycetes belong to the rhizosoil microbial communities and are efficient colonizers of plant tissues, from roots to the aerial parts. They are active producers of antibiotics and volatile organic compounds, both in soil and in planta, and this feature is helpful for identifying active antagonists of plant pathogens and can be used in several cropping systems as biocontrol agents. Additionally, their ability to promote plant growth has been demonstrated in a number of crops, thus inspiring the wide application of streptomycetes as biofertilizers to increase plant productivity. The present review highlights Streptomyces spp.-mediated functional traits, such as enhancement of plant growth and biocontrol of phytopathogens.
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Affiliation(s)
| | - Davide Giovanardi
- Department of Life Sciences, University of Modena and Reggio Emilia, via Amendola 2, 42122 Reggio Emilia, Italy.
| | - Emilio Stefani
- Department of Life Sciences, University of Modena and Reggio Emilia, via Amendola 2, 42122 Reggio Emilia, Italy.
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45
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Shariffah-Muzaimah SA, Idris AS, Madihah AZ, Dzolkhifli O, Kamaruzzaman S, Maizatul-Suriza M. Characterization of Streptomyces spp. isolated from the rhizosphere of oil palm and evaluation of their ability to suppress basal stem rot disease in oil palm seedlings when applied as powder formulations in a glasshouse trial. World J Microbiol Biotechnol 2017; 34:15. [PMID: 29256103 DOI: 10.1007/s11274-017-2396-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 12/08/2017] [Indexed: 11/24/2022]
Abstract
Ganoderma boninense, the main causal agent of oil palm (Elaeis guineensis) basal stem rot (BSR), severely reduces oil palm yields around the world. To reduce reliance on fungicide applications to control BSR, we are investigating the efficacy of alternative control methods, such as the application of biological control agents. In this study, we used four Streptomyces-like actinomycetes (isolates AGA43, AGA48, AGA347 and AGA506) that had been isolated from the oil palm rhizosphere and screened for antagonism towards G. boninense in a previous study. The aim of this study was to characterize these four isolates and then to assess their ability to suppress BSR in oil palm seedlings when applied individually to the soil in a vermiculite powder formulation. Analysis of partial 16S rRNA gene sequences (512 bp) revealed that the isolates exhibited a very high level of sequence similarity (> 98%) with GenBank reference sequences. Isolates AGA347 and AGA506 showed 99% similarity with Streptomyces hygroscopicus subsp. hygroscopicus and Streptomyces ahygroscopicus, respectively. Isolates AGA43 and AGA48 also belonged to the Streptomyces genus. The most effective formulation, AGA347, reduced BSR in seedlings by 73.1%. Formulations using the known antifungal producer Streptomyces noursei, AGA043, AGA048 or AGA506 reduced BSR by 47.4, 30.1, 54.8 and 44.1%, respectively. This glasshouse trial indicates that these Streptomyces spp. show promise as potential biological control agents against Ganoderma in oil palm. Further investigations are needed to determine the mechanism of antagonism and to increase the shelf life of Streptomyces formulations.
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Affiliation(s)
- S A Shariffah-Muzaimah
- Biology Research Division, Ganoderma and Diseases Research for Oil Palm (GanoDROP) Unit, Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia.
| | - A S Idris
- Biology Research Division, Ganoderma and Diseases Research for Oil Palm (GanoDROP) Unit, Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - A Z Madihah
- Biology Research Division, Ganoderma and Diseases Research for Oil Palm (GanoDROP) Unit, Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
| | - O Dzolkhifli
- Plant Protection Department, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Malaysia
| | - S Kamaruzzaman
- Plant Protection Department, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Malaysia
| | - M Maizatul-Suriza
- Biology Research Division, Ganoderma and Diseases Research for Oil Palm (GanoDROP) Unit, Malaysian Palm Oil Board, 6 Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia
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46
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Lv YY, Gao ZH, Xia F, Chen MH, Qiu LH. Puia dinghuensis gen. nov., sp. nov., isolated from monsoon evergreen broad-leaved forest soil. Int J Syst Evol Microbiol 2017; 67:4639-4645. [DOI: 10.1099/ijsem.0.002346] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Ying-ying Lv
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Zeng-hong Gao
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Fan Xia
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Mei-hong Chen
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Li-hong Qiu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, PR China
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Saeed EE, Sham A, Salmin Z, Abdelmowla Y, Iratni R, El-Tarabily K, AbuQamar S. Streptomyces globosus UAE1, a Potential Effective Biocontrol Agent for Black Scorch Disease in Date Palm Plantations. Front Microbiol 2017; 8:1455. [PMID: 28824584 PMCID: PMC5534479 DOI: 10.3389/fmicb.2017.01455] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 07/18/2017] [Indexed: 12/21/2022] Open
Abstract
Many fungal diseases affect date palm causing considerable losses in date production worldwide. We found that the fungicide Cidely® Top inhibited the mycelial growth of the soil-borne pathogenic fungus Thielaviopsis punctulata, the causal agent of black scorch disease of date palm, both in vitro and in vivo. Because the use of biocontrol agents (BCAs) can minimize the impact of pathogen control on economic and environmental concerns related to chemical control, we aimed at testing local actinomycete strains isolated from the rhizosphere soil of healthy date palm cultivated in the United Arab Emirates (UAE) against T. punctulata. The selected isolate can thus be used as a potential agent for integrated disease management programs. In general, the BCA showed antagonism in vitro and in greenhouse experiments against this pathogen. The most promising actinomycete isolate screened showed the highest efficacy against the black scorch disease when applied before or at the same time of inoculation with T. punctulata, compared with BCA or fungicide application after inoculation. The nucleotide sequence and phylogenetic analyses using the 16S ribosomal RNA gene with other Streptomyces spp. in addition to morphological and cultural characteristics revealed that the isolated UAE strain belongs to Streptomyces globosus UAE1. The antagonistic activity of S. globosus against T. punctulata, was associated with the production by this strain of diffusible antifungal metabolites i.e., metabolites that can inhibit mycelial growth of the pathogen. This was evident in the responses of the vegetative growth of pure cultures of the pathogen when exposed to the culture filtrates of the BCA. Altogether, the pathogenicity tests, disease severity indices and mode of action tests confirmed that the BCA was not only capable of suppressing black scorch disease symptoms, but also could prevent the spread of the pathogen, as a potential practical method to improve disease management in the palm plantations. This is the first report of an actinomycete, naturally occurring in the UAE with the potential for use as a BCA in the management of the black scorch disease of date palms in the region.
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Affiliation(s)
| | | | | | | | | | - Khaled El-Tarabily
- Department of Biology, United Arab Emirates UniversityAl Ain, United Arab Emirates
| | - Synan AbuQamar
- Department of Biology, United Arab Emirates UniversityAl Ain, United Arab Emirates
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48
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Nitrogen fixation, plant growth and yield enhancements by diazotrophic growth-promoting bacteria in two cultivars of chickpea ( Cicer arietinum L.). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2017. [DOI: 10.1016/j.bcab.2017.06.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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49
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Nayyar S, Sharma BK, Kaur A, Kalia A, Sanghera GS, Thind KS, Yadav IS, Sandhu JS. Red rot resistant transgenic sugarcane developed through expression of β-1,3-glucanase gene. PLoS One 2017; 12:e0179723. [PMID: 28658312 PMCID: PMC5489175 DOI: 10.1371/journal.pone.0179723] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 06/02/2017] [Indexed: 11/19/2022] Open
Abstract
Sugarcane (Saccharum spp.) is a commercially important crop, vulnerable to fungal disease red rot caused by Colletotrichum falcatum Went. The pathogen attacks sucrose accumulating parenchyma cells of cane stalk leading to severe losses in cane yield and sugar recovery. We report development of red rot resistant transgenic sugarcane through expression of β-1,3-glucanase gene from Trichoderma spp. The transgene integration and its expression were confirmed by quantitative reverse transcription-PCR in first clonal generation raised from T0 plants revealing up to 4.4-fold higher expression, in comparison to non-transgenic sugarcane. Bioassay of transgenic plants with two virulent C. falcatum pathotypes, Cf 08 and Cf 09 causing red rot disease demonstrated that some plants were resistant to Cf 08 and moderately resistant to Cf 09. The electron micrographs of sucrose storing stalk parenchyma cells from these plants displayed characteristic sucrose-filled cells inhibiting Cf 08 hyphae and lysis of Cf 09 hyphae; in contrast, the cells of susceptible plants were sucrose depleted and prone to both the pathotypes. The transgene expression was up-regulated (up to 2.0-fold in leaves and 5.0-fold in roots) after infection, as compared to before infection in resistant plants. The transgene was successfully transmitted to second clonal generation raised from resistant transgenic plants. β-1,3-glucanase protein structural model revealed that active sites Glutamate 628 and Aspartate 569 of the catalytic domain acted as proton donor and nucleophile having role in cleaving β-1,3-glycosidic bonds and pathogen hyphal lysis.
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Affiliation(s)
- Shivani Nayyar
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Bipen Kumar Sharma
- Punjab Agricultural University, Regional Research Station, Kapurthala, India
| | - Ajinder Kaur
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Punjab Agricultural University, Ludhiana, India
| | | | - Karanjit Singh Thind
- Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, India
| | - Inderjit Singh Yadav
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
| | - Jagdeep Singh Sandhu
- School of Agricultural Biotechnology, Punjab Agricultural University, Ludhiana, India
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A Study of Potential Control of Watermold Saprolegnia Sp. of Gouramy (Osphonemus gouramy) Eggs by Bacterial Isolates. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2017. [DOI: 10.22207/jpam.11.1.81] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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