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Fanai A, Bohia B, Lalremruati F, Lalhriatpuii N, Lalrokimi, Lalmuanpuii R, Singh PK, Zothanpuia. Plant growth promoting bacteria (PGPB)-induced plant adaptations to stresses: an updated review. PeerJ 2024; 12:e17882. [PMID: 39184384 PMCID: PMC11344539 DOI: 10.7717/peerj.17882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 07/17/2024] [Indexed: 08/27/2024] Open
Abstract
Plants and bacteria are co-evolving and interact with one another in a continuous process. This interaction enables the plant to assimilate the nutrients and acquire protection with the help of beneficial bacteria known as plant growth-promoting bacteria (PGPB). These beneficial bacteria naturally produce bioactive compounds that can assist plants' stress tolerance. Moreover, they employ various direct and indirect processes to induce plant growth and protect plants against pathogens. The direct mechanisms involve phytohormone production, phosphate solubilization, zinc solubilization, potassium solubilization, ammonia production, and nitrogen fixation while, the production of siderophores, lytic enzymes, hydrogen cyanide, and antibiotics are included under indirect mechanisms. This property can be exploited to prepare bioformulants for biofertilizers, biopesticides, and biofungicides, which are convenient alternatives for chemical-based products to achieve sustainable agricultural practices. However, the application and importance of PGPB in sustainable agriculture are still debatable despite its immense diversity and plant growth-supporting activities. Moreover, the performance of PGPB varies greatly and is dictated by the environmental factors affecting plant growth and development. This review emphasizes the role of PGPB in plant growth-promoting activities (stress tolerance, production of bioactive compounds and phytohormones) and summarises new formulations and opportunities.
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Affiliation(s)
- Awmpuizeli Fanai
- Department of Biotechnology, Mizoram University, Aizawl, Mizoram, India
| | | | | | - Nancy Lalhriatpuii
- Department of Biotechnology/Life Sciences, Pachhunga University College, Aizawl, Mizoram, India
| | - Lalrokimi
- Department of Biotechnology, Mizoram University, Aizawl, Mizoram, India
| | | | - Prashant Kumar Singh
- Department of Biotechnology/Life Sciences, Pachhunga University College, Aizawl, Mizoram, India
| | - Zothanpuia
- Department of Biotechnology/Life Sciences, Pachhunga University College, Aizawl, Mizoram, India
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Kumar GA, Kumar S, Bhardwaj R, Swapnil P, Meena M, Seth CS, Yadav A. Recent advancements in multifaceted roles of flavonoids in plant-rhizomicrobiome interactions. FRONTIERS IN PLANT SCIENCE 2024; 14:1297706. [PMID: 38250451 PMCID: PMC10796613 DOI: 10.3389/fpls.2023.1297706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 11/24/2023] [Indexed: 01/23/2024]
Abstract
The rhizosphere consists of a plethora of microbes, interacting with each other as well as with the plants present in proximity. The root exudates consist of a variety of secondary metabolites such as strigolactones and other phenolic compounds such as coumarin that helps in facilitating communication and forming associations with beneficial microbes in the rhizosphere. Among different secondary metabolites flavonoids (natural polyphenolic compounds) continuously increasing attention in scientific fields for showing several slews of biological activities. Flavonoids possess a benzo-γ-pyrone skeleton and several classes of flavonoids have been reported on the basis of their basic structure such as flavanones, flavonols, anthocyanins, etc. The mutualistic association between plant growth-promoting rhizobacteria (PGPR) and plants have been reported to help the host plants in surviving various biotic and abiotic stresses such as low nitrogen and phosphorus, drought and salinity stress, pathogen attack, and herbivory. This review sheds light upon one such component of root exudate known as flavonoids, which is well known for nodulation in legume plants. Apart from the well-known role in inducing nodulation in legumes, this group of compounds has anti-microbial and antifungal properties helping in establishing defensive mechanisms and playing a major role in forming mycorrhizal associations for the enhanced acquisition of nutrients such as iron and phosphorus. Further, this review highlights the role of flavonoids in plants for recruiting non-mutualistic microbes under stress and other important aspects regarding recent findings on the functions of this secondary metabolite in guiding the plant-microbe interaction and how organic matter affects its functionality in soil.
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Affiliation(s)
- Gokul Anil Kumar
- School of Basic Science, Department of Botany, Central University of Punjab, Bhatinda, Punjab, India
| | - Sumit Kumar
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
- Department of Plant Pathology, B.M. College of Agriculture, Khandwa, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, India
| | - Rupesh Bhardwaj
- School of Basic Science, Department of Botany, Central University of Punjab, Bhatinda, Punjab, India
| | - Prashant Swapnil
- School of Basic Science, Department of Botany, Central University of Punjab, Bhatinda, Punjab, India
| | - Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | | | - Ankush Yadav
- School of Basic Science, Department of Botany, Central University of Punjab, Bhatinda, Punjab, India
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Vanama S, Gopalan NSR, Pesari M, Baskar M, Gali UD, Lakshmi DL, Koteshwar P, Jesudasu G, Rathod S, Prasad MS, Panuganti R, Sundaram RM, Mohapatra S, Kannan C. Native bio-control agents from the rice fields of Telangana, India: characterization and unveiling the potential against stem rot and false smut diseases of rice. World J Microbiol Biotechnol 2023; 40:2. [PMID: 37923802 DOI: 10.1007/s11274-023-03782-2] [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: 05/01/2023] [Accepted: 09/28/2023] [Indexed: 11/06/2023]
Abstract
The stem rot caused by Sclerotium hydrophilum and false smut caused by Ustilaginoidea virens are two of the major production constraints in rice cultivation in India and other countries. Stem rot and false smut can be effectively controlled with synthetic fungicides. However, the indiscriminate use of chemical fungicides may cause development of resistance among the pathogens. In addition to this, synthetic fungicides also exhibit harmful impacts on the environment. Exploiting microbe-based alternatives for managing plant diseases diminishes public concerns about the ill effects of pesticide usage in crops. In this regard, the present study was designed to investigate the potential of native microbial biocontrol agents (BCAs) from rice rhizosphere for the sustainable management of stem rot and false smut diseases in rice. Potential BCAs and pathogens were identified and characterized through morphological, biochemical, and sanger sequencing techniques. Bio-efficacy tests of potential BCAs against stem rot and false smut diseases on rice under glasshouse conditions indicated higher seed vigour index of the treated seeds, significant improvement in the growth of the seedling, increased dry weight, reduction in percentage disease index viz., 70.03% (stem rot) and 69.24% (false smut) over the control plants. Phytohormones indole acetic acid (IAA), abscisic acid (ABA), gibberellic acid (GA), salicylic acid (SA), and zeatin (tZ) were detected and quantified in the four potential BCAs using liquid chromatography- tandem mass spectrometry (LC-MS/MS). Scanning electron microscopy (SEM) studies revealed the endophytic nature of the strains in rice. The study indicated a positive correlation between the diversity and concentration of phytohormones released by the bioagents and enhanced plant growth promotion and disease suppression in rice.
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Affiliation(s)
- Sowmya Vanama
- Professor Jayashankar, Telangana State Agricultural University, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - N S Raja Gopalan
- Birla Institute of Technology and Science Pilani, Hyderabad Campus, Secunderabad, Telangana, 500078, India
| | - Maruthi Pesari
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - M Baskar
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - Uma Devi Gali
- Professor Jayashankar, Telangana State Agricultural University, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - D Ladha Lakshmi
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - P Koteshwar
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - G Jesudasu
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - Santosha Rathod
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - M Srinivas Prasad
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - Rajanikanth Panuganti
- Professor Jayashankar, Telangana State Agricultural University, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - R M Sundaram
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana, 500030, India
| | - Sridev Mohapatra
- Birla Institute of Technology and Science Pilani, Hyderabad Campus, Secunderabad, Telangana, 500078, India
| | - C Kannan
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, Telangana, 500030, India.
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Zhu Y, Wang Y, He X, Li B, Du S. Plant growth-promoting rhizobacteria: A good companion for heavy metal phytoremediation. CHEMOSPHERE 2023; 338:139475. [PMID: 37442391 DOI: 10.1016/j.chemosphere.2023.139475] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 06/30/2023] [Accepted: 07/10/2023] [Indexed: 07/15/2023]
Abstract
Phytoremediation is an environment-friendly approach regarded as a potential candidate for remediating heavy metal (HM)-contaminated soils. However, the low efficacy of phytoremediation is a major limitation that hampers its large-scale application. Therefore, developing strategies to enhance phytoremediation efficacy for contaminated soils is crucial. Plant growth-promoting rhizobacteria (PGPR) considerably contribute to phytoremediation intensification. To improve the efficiency of plant-microbe symbiosis for remediation, the mechanisms underlying PGPR-stimulated HM accumulation and tolerance in plants should be comprehensively understood. This review focuses on hyperaccumulators, PGPR, and the mechanisms by which PGPR enhance phytoremediation from four aspects: providing nutrients to plants, secreting plant hormones and specific enzymes, inducing systemic resistance, and altering the bioavailability of HMs in soils. It also provides a theoretical and technical basis for future research on PGPR synergism in promoting the phytoextraction efficiency in HM-contaminated soils.
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Affiliation(s)
- Yaxin Zhu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Yu Wang
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Xiaolin He
- Jiangxi Province Agricultural Technology Extension Center, Nanchang, 330045, China
| | - Beier Li
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Shaoting Du
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China.
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Arora J, Kanthaliya B, Joshi A, Meena M, Meena S, Siddiqui MH, Alamri S, Devkota HP. Evaluation of Total Isoflavones in Chickpea ( Cicer arietinum L.) Sprouts Germinated under Precursors ( p-Coumaric Acid and L-Phenylalanine) Supplementation. PLANTS (BASEL, SWITZERLAND) 2023; 12:2823. [PMID: 37570977 PMCID: PMC10421377 DOI: 10.3390/plants12152823] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 07/19/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023]
Abstract
Cicer arietinum L. (Bengal gram, chickpea) is one of the major pulse crops and an important part of traditional diets in Asia, Africa, and South America. The present study was conducted to determine the changes in total isoflavones during sprouting (0, 3, and 7 days) along with the effect of two precursor supplementations, p-coumaric acid (p-CA) and L-phenylalanine (Phe), in C. arietinum. It was observed that increasing sprouting time up to the seventh day resulted in ≈1282 mg 100 g-1 isoflavones, which is approximately eight times higher than chickpea seeds. The supplementation of Phe did not affect the total length of sprouts, whereas the supplementation of p-CA resulted in stunted sprouts. On the third day of supplementation with p-CA (250 mg L-1), the increase in the total phenolic content (TPC) (80%), daidzein (152%), and genistin (158%) contents were observed, and further extending the supplementation reduced the growth of sprouts. On the seventh day of supplementation with Phe (500 mg L-1), the increase in TPC by 43% and genistin content by 74% was observed compared with non-treated sprouts; however, the total isoflavones content was found to be 1212 mg 100 g-1. The increased TPC was positively correlated with the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity (r = 0.787) and ferric-reducing antioxidant potential (FRAP) (r = 0.676) activity. This study suggests that chickpea sprouts enriched in TPC and antioxidants can be produced by the appropriate quantity of precursor supplementation on a particular day. The results indicated major changes in the phytochemical content, especially daidzein and genistin. It was also concluded that the consumption of 100 g of seventh-day sprouts provided eight times higher amounts of isoflavones in comparison to chickpea seeds.
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Affiliation(s)
- Jaya Arora
- Laboratory of Biomolecular Technology, Department of Botany, Mohanlal Sukhadia University, Udaipur 313001, Rajasthan, India (A.J.)
| | - Bhanupriya Kanthaliya
- Laboratory of Biomolecular Technology, Department of Botany, Mohanlal Sukhadia University, Udaipur 313001, Rajasthan, India (A.J.)
| | - Abhishek Joshi
- Laboratory of Biomolecular Technology, Department of Botany, Mohanlal Sukhadia University, Udaipur 313001, Rajasthan, India (A.J.)
| | - Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur 313001, Rajasthan, India
| | - Supriya Meena
- Laboratory of Biomolecular Technology, Department of Botany, Mohanlal Sukhadia University, Udaipur 313001, Rajasthan, India (A.J.)
| | - Manzer H. Siddiqui
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.H.S.); (S.A.)
| | - Saud Alamri
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.H.S.); (S.A.)
| | - Hari Prasad Devkota
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe-Honmachi, Chuo-ku, Kumamoto 862-0973, Japan;
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Ferioun M, bouhraoua S, Srhiouar N, Tirry N, Belahcen D, Siang TC, Louahlia S, El Ghachtouli N. Optimized drought tolerance in barley (Hordeum vulgare L.) using plant growth-promoting rhizobacteria (PGPR). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2023. [DOI: 10.1016/j.bcab.2023.102691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Khoshru B, Mitra D, Joshi K, Adhikari P, Rion MSI, Fadiji AE, Alizadeh M, Priyadarshini A, Senapati A, Sarikhani MR, Panneerselvam P, Mohapatra PKD, Sushkova S, Minkina T, Keswani C. Decrypting the multi-functional biological activators and inducers of defense responses against biotic stresses in plants. Heliyon 2023; 9:e13825. [PMID: 36873502 PMCID: PMC9981932 DOI: 10.1016/j.heliyon.2023.e13825] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 01/31/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023] Open
Abstract
Plant diseases are still the main problem for the reduction in crop yield and a threat to global food security. Additionally, excessive usage of chemical inputs such as pesticides and fungicides to control plant diseases have created another serious problem for human and environmental health. In view of this, the application of plant growth-promoting rhizobacteria (PGPR) for controlling plant disease incidences has been identified as an eco-friendly approach for coping with the food security issue. In this review, we have identified different ways by which PGPRs are capable of reducing phytopathogenic infestations and enhancing crop yield. PGPR suppresses plant diseases, both directly and indirectly, mediated by microbial metabolites and signaling components. Microbial synthesized anti-pathogenic metabolites such as siderophores, antibiotics, lytic enzymes, hydrogen cyanide, and several others act directly on phytopathogens. The indirect mechanisms of reducing plant disease infestation are caused by the stimulation of plant immune responses known as initiation of systemic resistance (ISR) which is mediated by triggering plant immune responses elicited through pathogen-associated molecular patterns (PAMPs). The ISR triggered in the infected region of the plant leads to the development of systemic acquired resistance (SAR) throughout the plant making the plant resistant to a wide range of pathogens. A number of PGPRs including Pseudomonas and Bacillus genera have proven their ability to stimulate ISR. However, there are still some challenges in the large-scale application and acceptance of PGPR for pest and disease management. Further, we discuss the newly formulated PGPR inoculants possessing both plant growth-promoting activities and plant disease suppression ability for a holistic approach to sustaining plant health and enhancing crop productivity.
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Affiliation(s)
- Bahman Khoshru
- Department of Soil Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Debasis Mitra
- Department of Microbiology, Raiganj University, Raiganj - 733 134, West Bengal, India
| | - Kuldeep Joshi
- G.B. Pant National Institute of Himalayan Environment, Kosi-Katarmal, Almora-263643, Uttarakhand, India
| | - Priyanka Adhikari
- Centre for Excellence on GMP Extraction Facility (DBT, Govt. of India), National Institute of Pharmaceutical Education and Research. Guwahati-781101, Assam, India
| | | | - Ayomide Emmanuel Fadiji
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho 2735, South Africa
| | - Mehrdad Alizadeh
- Department of Plant Pathology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Ankita Priyadarshini
- Crop Production Division, ICAR – National Rice Research Institute, Cuttack, 753006, Odisha, India
| | - Ansuman Senapati
- Crop Production Division, ICAR – National Rice Research Institute, Cuttack, 753006, Odisha, India
| | | | - Periyasamy Panneerselvam
- Crop Production Division, ICAR – National Rice Research Institute, Cuttack, 753006, Odisha, India
| | | | - Svetlana Sushkova
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don 344090, Russia
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don 344090, Russia
| | - Chetan Keswani
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don 344090, Russia
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Xavier GR, Jesus EDC, Dias A, Coelho MRR, Molina YC, Rumjanek NG. Contribution of Biofertilizers to Pulse Crops: From Single-Strain Inoculants to New Technologies Based on Microbiomes Strategies. PLANTS (BASEL, SWITZERLAND) 2023; 12:954. [PMID: 36840302 PMCID: PMC9962295 DOI: 10.3390/plants12040954] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/14/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
Pulses provide distinct health benefits due to their low fat content and high protein and fiber contents. Their grain production reaches approximately 93,210 × 103 tons per year. Pulses benefit from the symbiosis with atmospheric N2-fixing bacteria, which increases productivity and reduces the need for N fertilizers, thus contributing to mitigation of environmental impact mitigation. Additionally, the root region harbors a rich microbial community with multiple traits related to plant growth promotion, such as nutrient increase and tolerance enhancement to abiotic or biotic stresses. We reviewed the eight most common pulses accounting for almost 90% of world production: common beans, chickpeas, peas, cowpeas, mung beans, lentils, broad beans, and pigeon peas. We focused on updated information considering both single-rhizobial inoculation and co-inoculation with plant growth-promoting rhizobacteria. We found approximately 80 microbial taxa with PGPR traits, mainly Bacillus sp., B. subtilis, Pseudomonas sp., P. fluorescens, and arbuscular mycorrhizal fungi, and that contributed to improve plant growth and yield under different conditions. In addition, new data on root, nodule, rhizosphere, and seed microbiomes point to strategies that can be used to design new generations of biofertilizers, highlighting the importance of microorganisms for productive pulse systems.
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Affiliation(s)
| | | | - Anelise Dias
- Departamento de Fitotecnia, Instituto de Agronomia, Universidade Federal Rural do Rio de Janeiro, UFRRJ, Rodovia BR-465, Km 7, Seropédica 23890-000, RJ, Brazil
| | | | - Yulimar Castro Molina
- Programa de Pós-graduação em Microbiologia Agrícola, Universidade Federal de Lavras, UFLA, Trevo Rotatório Professor Edmir Sá Santos, Lavras 37203-202, MG, Brazil
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Jagtap RR, Mali GV, Waghmare SR, Nadaf NH, Nimbalkar MS, Sonawane KD. Impact of plant growth promoting rhizobacteria Serratia nematodiphila RGK and Pseudomonas plecoglossicida RGK on secondary metabolites of turmeric rhizome. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2023. [DOI: 10.1016/j.bcab.2023.102622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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10
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Meena M, Mehta T, Nagda A, Yadav G, Sonigra P. PGPR-mediated synthesis and alteration of different secondary metabolites during plant-microbe interactions. PLANT-MICROBE INTERACTION - RECENT ADVANCES IN MOLECULAR AND BIOCHEMICAL APPROACHES 2023:229-255. [DOI: 10.1016/b978-0-323-91875-6.00002-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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Meena M, Nagda A, Mehta T, Yadav G, Sonigra P. Mechanistic basis of the symbiotic signaling pathway between the host and the pathogen. PLANT-MICROBE INTERACTION - RECENT ADVANCES IN MOLECULAR AND BIOCHEMICAL APPROACHES 2023:375-387. [DOI: 10.1016/b978-0-323-91875-6.00001-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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Meena M, Yadav G, Sonigra P, Nagda A, Mehta T, Swapnil P, Marwal A, Zehra A. Advantageous features of plant growth-promoting microorganisms to improve plant growth in difficult conditions. PLANT-MICROBE INTERACTION - RECENT ADVANCES IN MOLECULAR AND BIOCHEMICAL APPROACHES 2023:279-296. [DOI: 10.1016/b978-0-323-91876-3.00019-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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Meza C, Valenzuela F, Echeverría-Vega A, Gomez A, Sarkar S, Cabeza RA, Arencibia AD, Quiroz K, Carrasco B, Banerjee A. Plant-growth-promoting bacteria from rhizosphere of Chilean common bean ecotype ( Phaseolus vulgaris L.) supporting seed germination and growth against salinity stress. FRONTIERS IN PLANT SCIENCE 2022; 13:1052263. [PMID: 36618623 PMCID: PMC9814130 DOI: 10.3389/fpls.2022.1052263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Salinity abiotic stress is increasing day by day due to continuous global warming and climate change. This is also becoming one of the major causes behind the reduction in crop production. Plant-bacteria interaction plays an essential role in improving crop yield without using any chemical fertilizers. The present study aims to characterize the interaction between plant-growth-promoting bacteria (PGPB) and their role in mitigating salinity stress for local variety crops. Therefore, in this work, two PGPB, namely, Bacillus proteolyticus Cyn1 and Bacillus safensis Cyn2, were isolated from rhizospheric soil of the Chilean common bean ecotype "Sapito" (Phaseolus vulgaris L.), and their PGPB traits were analyzed. Cyn1 can produce NH3 and HCN and also secrete siderophores, whereas Cyn2 produced NH3 and siderophores but responded negatively to HCN production. Both the isolated bacteria have shown a positive result for ACC deaminase production, phosphate solubilization, and catalase enzyme secretion. Under all three tested abiotic stresses, i.e., temperature, water, and salinity, both the bacteria and their consortium have demonstrated positive responses. Cyn1 under temperature stress and water stress can produce a biofilm network to combat the stress. While under salinity stress, both the PGPB isolates indicated the production of stress components and cytoplasmic inclusion bodies. Based on the response, among all other abiotic stresses, salinity stress was chosen for further plant-bacteria interaction study and growth. Visible root colonization of the bacteria has been observed in comparison to the control. The germination index was 100% for all experimental setups of seed bacterization, both under control conditions and salinity stress. Both bacteria responded with good PGP traits that helped in the growth of healthy plants after the bacterial treatment in final pot experiments. Additionally, the consortium and the plants treated with Cyn1 have demonstrated high production of photosynthetic pigments in both experimental setups. Both B. proteolyticus Cyn1 and B. safensis Cyn2 have shown promising PGP characters and efficient response against toxicity related to salinity. Hence, both of these bacteria and consortium can be used for improved agricultural production of Chilean native common beans in the near future.
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Affiliation(s)
- Cynthia Meza
- Doctorado en Biotecnología Traslacional (DBT), Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca, Chile
- Centro de Biotecnología de los Recursos Naturales (CENBio), Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca, Chile
- Centro de Estudios en Alimentos Procesados (CEAP), Talca, Chile
| | | | - Alex Echeverría-Vega
- Centro de Investigación de Estudios Avanzados del Maule, Vicerrectoría de Investigación y Posgrado, Universidad Católica del Maule, Talca, Chile
| | - Aleydis Gomez
- Centro de Biotecnología de los Recursos Naturales (CENBio), Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca, Chile
| | - Shrabana Sarkar
- Centro de Investigación de Estudios Avanzados del Maule, Vicerrectoría de Investigación y Posgrado, Universidad Católica del Maule, Talca, Chile
| | - Ricardo A. Cabeza
- Plant Nutrition Laboratory, Department of Crop Sciences, Faculty of Agricultural Sciences, University of Talca, Talca, Chile
| | - Ariel D. Arencibia
- Centro de Biotecnología de los Recursos Naturales (CENBio), Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca, Chile
| | - Karla Quiroz
- Centro de Biotecnología de los Recursos Naturales (CENBio), Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca, Chile
| | | | - Aparna Banerjee
- Centro de Biotecnología de los Recursos Naturales (CENBio), Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca, Chile
- Centro de Investigación de Estudios Avanzados del Maule, Vicerrectoría de Investigación y Posgrado, Universidad Católica del Maule, Talca, Chile
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Ganesh J, Singh V, Hewitt K, Kaundal A. Exploration of the rhizosphere microbiome of native plant Ceanothus velutinus - an excellent resource of plant growth-promoting bacteria. FRONTIERS IN PLANT SCIENCE 2022; 13:979069. [PMID: 36589081 PMCID: PMC9798410 DOI: 10.3389/fpls.2022.979069] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Continuous demand for an increase in food production due to climate change and a steady rise in world population requires stress-resilient, sustainable agriculture. Overuse of chemical fertilizers and monoculture farming to achieve this goal deteriorated soil health and negatively affected its microbiome. The rhizosphere microbiome of a plant plays a significant role in its growth and development and promotes the plant's overall health through nutrient uptake/availability, stress tolerance, and biocontrol activity. The Intermountain West (IW) region of the US is rich in native plants recommended for low water use landscaping because of their drought tolerance. The rhizosphere microbiome of these native plants is an excellent resource for plant growth-promoting rhizobacteria (PGPR) to use these microbes as biofertilizers and biostimulants to enhance food production, mitigate environmental stresses and an alternative for chemical fertilizer, and improve soil health. Here, we isolated, purified, identified, and characterized 64 bacterial isolates from a native plant, Ceanothus velutinus, commonly known as snowbrush ceanothus, from the natural habitat and the greenhouse-grown native soil-treated snowbrush ceanothus plants. We also conducted a microbial diversity analysis of the rhizosphere of greenhouse-grown native soil-treated and untreated plants (control). Twenty-seven of the 64 isolates were from the rhizosphere of the native region, and 36 were from the greenhouse-grown native soil-treated plants. These isolates were also tested for plant growth-promoting (PGP) traits such as their ability to produce catalase, siderophore, and indole acetic acid, fix atmospheric nitrogen and solubilize phosphate. Thirteen bacterial isolates tested positive for all five plant growth-promoting abilities and belonged to the genera Pantoea, Pseudomonas, Bacillus, and Ancylobacter. Besides, there are isolates belonging to the genus Streptomyces, Bacillus, Peribacillus, Variovorax, Xenophilus, Brevundimonas, and Priestia, which exhibit at least one of the plant growth-promoting activities. This initial screen provided a list of potential PGPR to test for plant health improvement on model and crop plants. Most of the bacterial isolates in this study have a great potential to become biofertilizers and bio-stimulants.
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Kumar R, Swapnil P, Meena M, Selpair S, Yadav BG. Plant Growth-Promoting Rhizobacteria (PGPR): Approaches to Alleviate Abiotic Stresses for Enhancement of Growth and Development of Medicinal Plants. SUSTAINABILITY 2022; 14:15514. [DOI: 10.3390/su142315514] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Plants are constantly exposed to both biotic and abiotic stresses which limit their growth and development and reduce productivity. In order to tolerate them, plants initiate a multitude of stress-specific responses which modulate different physiological, molecular and cellular mechanisms. However, many times the natural methods employed by plants for overcoming the stresses are not sufficient and require external assistance from the rhizosphere. The microbial community in the rhizosphere (known as the rhizomicrobiome) undergoes intraspecific as well as interspecific interaction and signaling. The rhizomicrobiome, as biostimulants, play a pivotal role in stimulating the growth of plants and providing resilience against abiotic stress. Such rhizobacteria which promote the development of plants and increase their yield and immunity are known as PGPR (plant growth promoting rhizobacteria). On the basis of contact, they are classified into two categories, extracellular (in soil around root, root surface and cellular space) and intracellular (nitrogen-fixing bacteria). They show their effects on plant growth directly (i.e., in absence of pathogens) or indirectly. Generally, they make their niche in concentrated form around roots, as the latter exude several nutrients, such as amino acids, lipids, proteins, etc. Rhizobacteria build a special symbiotic relationship with the plant or a section of the plant’s inner tissues. There are free-living PGPRs with the potential to work as biofertilizers. Additionally, studies show that PGPRs can ameliorate the effect of abiotic stresses and help in enhanced growth and development of plants producing therapeutically important compounds. This review focuses on the various mechanisms which are employed by PGPRs to mitigate the effect of different stresses in medicinal plants and enhance tolerance against these stress conditions.
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16
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Mahdi I, Fahsi N, Hijri M, Sobeh M. Antibiotic resistance in plant growth promoting bacteria: A comprehensive review and future perspectives to mitigate potential gene invasion risks. Front Microbiol 2022; 13:999988. [PMID: 36204627 PMCID: PMC9530320 DOI: 10.3389/fmicb.2022.999988] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 08/25/2022] [Indexed: 11/26/2022] Open
Abstract
Plant growth-promoting bacteria (PGPB) are endowed with several attributes that can be beneficial for host plants. They opened myriad doors toward green technology approach to reduce the use of chemical inputs, improve soil fertility, and promote plants’ health. However, many of these PGPB harbor antibiotic resistance genes (ARGs). Less attention has been given to multi-resistant bacterial bioinoculants which may transfer their ARGs to native soil microbial communities and other environmental reservoirs including animals, waters, and humans. Therefore, large-scale inoculation of crops by ARGs-harboring bacteria could worsen the evolution and dissemination of antibiotic resistance and aggravate the negative impacts on such ecosystem and ultimately public health. Their introduction into the soil could serve as ARGs invasion which may inter into the food chain. In this review, we underscore the antibiotic resistance of plant-associated bacteria, criticize the lack of consideration for this phenomenon in the screening and application processes, and provide some recommendations as well as a regulation framework relating to the development of bacteria-based biofertilizers to aid maximizing their value and applications in crop improvement while reducing the risks of ARGs invasion.
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Affiliation(s)
- Ismail Mahdi
- Agrobiosciences Research Program, Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
| | - Nidal Fahsi
- Agrobiosciences Research Program, Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
| | - Mohamed Hijri
- Institut de Recherche en Biologie Végétale, Département de Sciences Biologiques, Université de Montréal, Montréal, QC, Canada
- African Genome Center, Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
- *Correspondence: Mohamed Hijri,
| | - Mansour Sobeh
- Agrobiosciences Research Program, Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco
- Mansour Sobeh,
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17
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Hassan S, Sabreena, Khurshid Z, Bhat SA, Kumar V, Ameen F, Ganai BA. Marine Bacteria and Omic Approaches: A Novel and Potential Repository for Bioremediation Assessment. J Appl Microbiol 2022; 133:2299-2313. [PMID: 35818751 DOI: 10.1111/jam.15711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 06/15/2022] [Accepted: 07/01/2022] [Indexed: 10/17/2022]
Abstract
Marine environments accommodating diverse assortments of life constitute a great pool of differentiated natural resources. The cumulative need to remedy unpropitious effects of anthropogenic activities on estuaries, and coastal marine ecosystems has propelled the development of effective bioremediation strategies. Marine bacteria producing biosurfactants are promising agents for bio-remediating oil pollution in marine environments, making them prospective candidates for enhancing oil recovery. Molecular omics technologies are considered an emerging field of research in ecological and diversity assessment owing to their utility in environmental surveillance and bioremediation of polluted sites. A thorough literature review was undertaken to understand the applicability of different omic techniques employed for bioremediation assessment using marine bacteria. This review further establishes that for bioremediation of environmental pollutants (i.e., heavy metals, hydrocarbons, xenobiotic and numerous recalcitrant compounds), organisms isolated from marine environments can be better utilized for their removal. The literature survey shows that omics approaches can provide exemplary knowledge about microbial communities and their role in the bioremediation of environmental pollutants. This review centres on applications of marine bacteria in enhanced bioremediation, utilizing the omics approaches that can be a vital biological contrivance in environmental monitoring to tackle environmental degradation. The paper aims to identify the gaps in investigations involving marine bacteria to help researchers, ecologists, and decision-makers to develop a holistic understanding regarding their utility in bioremediation assessment.
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Affiliation(s)
- Shahnawaz Hassan
- Department of Environmental Science, University of Kashmir, India
| | - Sabreena
- Department of Environmental Science, University of Kashmir, India
| | | | | | - Vineet Kumar
- Department of Botany, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, Chhattisgarh-495009, India
| | - Fuad Ameen
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
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18
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Della Mónica IF, Wong Villarreal A, Stefanoni Rubio PJ, Vaca-Paulín R, Yañez-Ocampo G. Exploring plant growth-promoting rhizobacteria as stress alleviators: a methodological insight. Arch Microbiol 2022; 204:316. [PMID: 35556177 DOI: 10.1007/s00203-022-02909-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 03/29/2022] [Accepted: 04/11/2022] [Indexed: 11/29/2022]
Abstract
Rhizospheric and root-endophyte bacteria can stimulate plant growth through diverse biochemical mechanisms and pathways, particularly under biotic and abiotic stresses. For this reason, biotechnological trends on plant growth-promoting rhizobacteria (PGPR) application as biofertilizers, bioremediators, and stress alleviators are gaining increasing interest as ecofriendly strategies for sustainable agriculture management and soil restoration. The first steps needed to implement these technologies are isolation, screening, and characterization of PGPR that can be potentially applied as bioinoculants to alleviate biotic and/or abiotic stresses. Therefore, a complete and accurate methodological study and laboratory techniques are required to warrant the correct achievement of these steps. This review compiles and details the fundamentals, methods, and procedures of key protocols used in isolation and characterization of PGPR for plant stress alleviation.
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Affiliation(s)
- Ivana F Della Mónica
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica, Consejo Nacional de Investigaciones Científicas y Tecnológicas (INMIBO-CONICET), Universidad de Buenos Aires (UBA), Lab. 69, 4 Piso, Pabellón II, Ciudad Universitaria, Intendente Güiraldes 2160, 1428, Buenos Aires, Argentina.
| | - Arnoldo Wong Villarreal
- División Agroalimentaria, Universidad Tecnológica de la Selva, Ocosingo, 29950, Chiapas, Mexico
| | - Pablo J Stefanoni Rubio
- Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica, Consejo Nacional de Investigaciones Científicas y Tecnológicas (INMIBO-CONICET), Universidad de Buenos Aires (UBA), Lab. 69, 4 Piso, Pabellón II, Ciudad Universitaria, Intendente Güiraldes 2160, 1428, Buenos Aires, Argentina
| | - Rocío Vaca-Paulín
- Laboratorio de Edafología y Ambiente, Facultad de Ciencias, Universidad Autónoma del Estado de México, 50000, Toluca, Estado de México, México
| | - Gustavo Yañez-Ocampo
- Laboratorio de Edafología y Ambiente, Facultad de Ciencias, Universidad Autónoma del Estado de México, 50000, Toluca, Estado de México, México.
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Genomic and Experimental Analysis of the Biostimulant and Antagonistic Properties of Phytopathogens of Bacillus safensis and Bacillus siamensis. Microorganisms 2022; 10:microorganisms10040670. [PMID: 35456723 PMCID: PMC9024481 DOI: 10.3390/microorganisms10040670] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 12/21/2022] Open
Abstract
The B. safensis RGM 2450 and B. siamensis RGM 2529 strains were isolated from the rhizosphere of plants presenting resilience to abiotic and biotic stress conditions. To understand the implications of bacteria in resilience, a genomic and experimental analysis was carried out on their biostimulant and phytopathogenic antagonist properties. Genome analyses of both strains indicated that they have the potential to synthesize bioactive compounds such as the battery of non-ribosomal peptides, polyketides, extracellular enzymes and phytohormones. These results were consistent with the antagonistic activities of both strains against the phytopathogens Botrytis cinerea, Colletotrichum acutatum, Fusarium oxysporum and Phytophtora cinnamomi. They also showed the capacity to solubilize phosphorus, fix nitrogen and produce indole acetic acid. This was observed in tomato seedlings grown from seeds inoculated with the mixture of strains which presented significantly greater length as well as wet and dry weight in comparison with the treatments individually inoculated with each strain and the control. Accordingly, the combination of B. safensis RGM 2450 and B. siamensis RGM 2529 showed synergistic biostimulant activity. These findings contribute new knowledge of the genomic and metabolomic properties taking part in the symbiotic interactions between these strains and the plants and uphold the combined use of both strains as a biostimulant.
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20
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Mir MI, Hameeda B, Quadriya H, Kumar BK, Ilyas N, Kee Zuan AT, El Enshasy HA, Dailin DJ, Kassem HS, Gafur A, Sayyed RZ. Multifarious Indigenous Diazotrophic Rhizobacteria of Rice (Oryza sativa L.) Rhizosphere and Their Effect on Plant Growth Promotion. Front Nutr 2022; 8:781764. [PMID: 35096930 PMCID: PMC8793879 DOI: 10.3389/fnut.2021.781764] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 12/15/2021] [Indexed: 11/16/2022] Open
Abstract
A diverse group of rhizobacteria persists in the rhizospheric soil, on the surface of roots, or in association with rice plants. These bacteria colonize plant root systems, enhance plant growth and crop yield. Indigenous rhizobacteria are known to promote soil health, grain production quality and serve as sustainable bioinoculant. The present study was aimed to isolate, identify and characterize indigenous plant growth promoting (PGP) diazotrophic bacteria associated with the rhizosphere of rice fields from different areas of Jammu and Kashmir, India. A total of 15 bacteria were isolated and evaluated for various PGP traits, antagonistic activity against phytopathogens, production of hydrolytic enzymes and biofilm formation under in-vitro conditions. The majority of the isolated bacteria were Gram-negative. Out of 15 bacterial isolates, nine isolates produced IAA (12.24 ± 2.86 to 250.3 ± 1.15 μg/ml), 6 isolates exhibited phosphate solubilization activity (36.69 ± 1.63 to 312.4 ± 1.15 μg/ml), 7 isolates exhibited rock phosphate solubilization while 5 isolates solubilized zinc (10–18 mm), 7 isolates showed siderophore production, 8 isolates exhibited HCN production, 6 isolates exhibited aminocyclopropane-1-carboxylate (ACC) deaminase activity, 13 isolates exhibited cellulase activity, nine isolates exhibited amylase and lipase activity and six isolates exhibited chitinase activity. In addition, 5 isolates showed amplification with the nifH gene and showed a significant amount of nitrogenase activity in a range of 0.127–4.39 μmol C2H4/mg protein/h. Five isolates viz., IHK-1, IHK-3, IHK-13, IHK-15 and IHK-25 exhibited most PGP attributes and successfully limited the mycelial growth of Rhizoctonia solani and Fusarium oxysporum in-vitro. All the five bacterial isolates were identified based on morphological, biochemical and 16S rDNA gene sequencing study, as Stenotrophomonas maltophilia, Enterobacter sp., Bacillus sp., Ochrobactrum haematophilum and Pseudomonas aeruginosa. Rice plants developed from seeds inoculated with these PGP strains individually had considerably higher germination percentage, seed vigor index and total dry biomass when compared to control. These findings strongly imply that the PGP diazotrophic bacteria identified in this work could be employed as plant growth stimulators in rice.
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Affiliation(s)
- Mohammad Imran Mir
- Department of Botany, University College of Science, Osmania University, Hyderabad, India
| | - Bee Hameeda
- Department of Microbiology, University College of Science, Osmania University, Hyderabad, India
| | - Humera Quadriya
- Department of Microbiology, University College of Science, Osmania University, Hyderabad, India
| | - B. Kiran Kumar
- Department of Botany, University College of Science, Osmania University, Hyderabad, India
- *Correspondence: B. Kiran Kumar
| | - Noshin Ilyas
- Department of Botany, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Pakistan
| | - Ali Tan Kee Zuan
- Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Malaysia
- Ali Tan Kee Zuan
| | - Hesham Ali El Enshasy
- Institute of Bioproduct Development, Universiti Teknologi Malaysia, Skudai, Malaysia
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Malaysia
- City of Scientific Research and Technology Applications, New Burg Al Arab, Alexandria, Egypt
| | - Daniel Joe Dailin
- Institute of Bioproduct Development, Universiti Teknologi Malaysia, Skudai, Malaysia
| | - Hazem S. Kassem
- Department of Agricultural Extension and Rural Society, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Abdul Gafur
- Sinarmas Forestry Corporate Research and Development, Perawang, Indonesia
| | - R. Z. Sayyed
- Asian Plant Growth Promoting Rhizobacteria Society (PGPR) for Sustainable Agriculture, Auburn University, Auburn, AL, United States
- R. Z. Sayyed
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21
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Meena M, Yadav G, Sonigra P, Nagda A, Mehta T, Zehra A, Swapnil P. Role of Microbial Bioagents as Elicitors in Plant Defense Regulation. TRANSCRIPTION FACTORS FOR BIOTIC STRESS TOLERANCE IN PLANTS 2022:103-128. [DOI: 10.1007/978-3-031-12990-2_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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22
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Characterization of phosphate solubilizing plant growth promoting rhizobacterium Lysinibacillus pakistanensis strain PCPSMR15 isolated from Oryza sativa. CURRENT RESEARCH IN MICROBIAL SCIENCES 2021; 2:100080. [PMID: 34927106 PMCID: PMC8649645 DOI: 10.1016/j.crmicr.2021.100080] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 02/01/2023] Open
Abstract
The rhizosphere soil is a source for a diversity of microorganisms which play a vital role in the enhancement of plant health through the mechanism of symbiotic interaction thereby influencing the plant growth. The present study aimed at isolating potential phosphate solubilizing rhizobacteria from rice (Oryza sativa) crop for which, four different rhizosphere soil samples were collected from different locations of Tiruvallur district, India. Isolates were cultured on nutrient agar medium followed by serial dilutions and different colonies with morphological variations were isolated from each dilution. A total of 52 bacteria were isolated and maintained as pure cultures. Out of the 52 isolates, 16 strains showed phosphate solubilizing ability and amongst them, 4 were highly potential which were subjected to morphological and biochemical characterization. Phosphate solubilizing bacterial strains when assessed for their possible effect of their inoculation on the growth and development of mung bean seeds significantly enhanced the growth of the plants. Furthermore, the potential bacteria were analysed for Indole Acetic Acid (IAA) production, which was found to be directly proportional to the plant growth promotion. Upon the comparative analysis of the four potential isolates, PCPSMR15 exhibited remarkable plant growth promoting traits. A detailed biochemical and molecular analysis identified the promising strain PCPSMR15 as Lysinibacillus pakistanensis. The present study, thus signifies the strain, PCPSMR15 for exploration as an inoculant for improving soil fertility, enhancing phosphorus availability to plants and improved crop production and sustainability.
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Bomfim CA, Coelho LGF, do Vale HMM, de Carvalho Mendes I, Megías M, Ollero FJ, dos Reis Junior FB. Brief history of biofertilizers in Brazil: from conventional approaches to new biotechnological solutions. Braz J Microbiol 2021; 52:2215-2232. [PMID: 34590295 PMCID: PMC8578473 DOI: 10.1007/s42770-021-00618-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 09/20/2021] [Indexed: 10/20/2022] Open
Abstract
Brazil has a long history of research with rhizobia and plant growth-promoting rhizobacteria (PGPR). Currently, the use of bio-based products in Brazil, containing microorganisms that are effective in promoting plant growth through various mechanisms, is already a consolidated reality for the cultivation of several crops of agricultural interest. This is due to the excellent results obtained over many years of research, which contributed to reinforce the use of rhizobia and PGPR by farmers. The high quality of the products offered, containing elite strains, allows the reduction and prevention in the use of mineral fertilization, contributing to low-cost and sustainable agriculture. Currently, research has turned its efforts in the search for new products that further increase the efficiency of those already available on the market and for new formulations or inoculation strategies that contribute to greater productivity and efficiency of these products. In this review, the history of biological products for main crops of agricultural interest and the new biotechnologies and research available in the agricultural market are discussed.
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Affiliation(s)
- Catharine Abreu Bomfim
- Embrapa Cerrados, Planaltina, Distrito Federal Brazil
- Microbial Biology, University of Brasilia, Brasilia, Distrito Federal Brazil
| | - Lucas Gabriel Ferreira Coelho
- Embrapa Cerrados, Planaltina, Distrito Federal Brazil
- Microbial Biology, University of Brasilia, Brasilia, Distrito Federal Brazil
| | | | | | - Manuel Megías
- Department of Microbiology, Faculty of Biology, Universidad de Sevilla, Sevilla, Spain
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Zehra A, Raytekar NA, Meena M, Swapnil P. Efficiency of microbial bio-agents as elicitors in plant defense mechanism under biotic stress: A review. CURRENT RESEARCH IN MICROBIAL SCIENCES 2021; 2:100054. [PMID: 34841345 PMCID: PMC8610294 DOI: 10.1016/j.crmicr.2021.100054] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/29/2021] [Accepted: 07/29/2021] [Indexed: 12/14/2022] Open
Abstract
MBCAs played beneficial role to protect plants from harmful pathogens to control plant diseases. MBCAs also support in plant growth promotion and stress tolerance. MBCAs act as elicitors to induce a signal to stimulate the plant defense mechanism against pathogens. Reticine A-induced hypersensitive reaction, systemic accumulation of H2O2 and salicylic acid.
Numerous harmful microorganisms and insect pests have the ability to cause plant infections or damage, which is mostly controlled by toxic chemical agents. These chemical compounds and their derivatives exhibit hazardous effects on habitats and human life too. Hence, there's a need to develop novel, more effective and safe bio-control agents. A variety of microbes such as viruses, bacteria, and fungi possess a great potential to fight against phytopathogens and thus can be used as bio-control agents instead of harmful chemical compounds. These naturally occurring microorganisms are applied to the plants in order to control phytopathogens. Moreover, practicing them appropriately for agriculture management can be a way towards a sustainable approach. The MBCAs follow various modes of action and act as elicitors where they induce a signal to activate plant defense mechanisms against a variety of pathogens. MBCAs control phytopathogens and help in disease suppression through the production of enzymes, antimicrobial compounds, antagonist activity involving hyper-parasitism, induced resistance, competitive inhibition, etc. Efficient recognition of pathogens and prompt defensive response are key factors of induced resistance in plants. This resistance phenomenon is pertaining to a complex cascade that involves an increased amount of defensive proteins, salicylic acid (SA), or induction of signaling pathways dependent on plant hormones. Although, there's a dearth of information about the exact mechanism of plant-induced resistance, the studies conducted at the physiological, biochemical and genetic levels. These studies tried to explain a series of plant defensive responses triggered by bio-control agents that may enhance the defensive capacity of plants. Several natural and recombinant microorganisms are commercially available as bio-control agents that mainly include strains of Bacillus, Pseudomonads and Trichoderma. However, the complete understanding of microbial bio-control agents and their interactions at cellular and molecular levels will facilitate the screening of effective and eco-friendly bio-agents, thereby increasing the scope of MBCAs. This article is a comprehensive review that highlights the importance of microbial agents as elicitors in the activation and regulation of plant defense mechanisms in response to a variety of pathogens.
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Key Words
- ABA, Abscisic acid
- BABA, β-Aminobutyric acid
- BTH, Benzothiadiazole
- CKRI, Cross kingdom RNA interference
- DAMPs, Damage-associated molecular patterns
- Defense mechanism
- ET, Ethylene
- ETI, Effector-triggered immunity
- Elicitors
- Fe, Iron
- GSH, Glutathione
- HAMP, Herbivore-associated molecular patterns
- HG, Heptaglucan
- HIR, Herbivore induced resistance
- HRs, Hormonal receptors
- ISR, Induced systemic resistance
- ISS, Induced systemic susceptibility
- Induced resistance
- JA, Jasmonic acid
- LAR, Local acquired resistance
- LPS, Lipopolysaccharides
- MAMPs, Microbe-associated molecular patterns
- MBCAs, Microbial biological control agents
- Microbiological bio-control agent
- N, Nitrogen
- NO, Nitric oxide
- P, Phosphorous
- PAMPs, Pathogen-associated molecular patterns
- PGP, Plant growth promotion
- PGPB, Plant growth promoting bacteria
- PGPF, Plant growth promoting fungi
- PGPR, Plant growth promoting rhizobacteria
- PRPs, Pathogenesis-related proteins
- PRRs, Pattern recognition receptors
- PTI, Pattern triggered immunity
- Plant defense
- Plant disease
- RLKs, Receptor-like-kinases
- RLPs, Receptor-like-proteins
- ROS, Reactive oxygen species
- SA, Salicylic acid
- SAR, Systemic acquired resistance
- TFs, Transcription factors
- TMV, Tobacco mosaic virus
- VOCs, Volatile organic compounds
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Affiliation(s)
- Andleeb Zehra
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi - 221005, India
| | | | - Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur - 313001, Rajasthan, India
| | - Prashant Swapnil
- Department of Botany, University of Delhi, New Delhi - 110007, India
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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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de Medeiros Azevedo T, Aburjaile FF, Ferreira-Neto JRC, Pandolfi V, Benko-Iseppon AM. The endophytome (plant-associated microbiome): methodological approaches, biological aspects, and biotech applications. World J Microbiol Biotechnol 2021; 37:206. [PMID: 34708327 DOI: 10.1007/s11274-021-03168-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/05/2021] [Indexed: 11/25/2022]
Abstract
Similar to other organisms, plants establish interactions with a variety of microorganisms in their natural environment. The plant microbiome occupies the host plant's tissues, either internally or on its surfaces, showing interactions that can assist in its growth, development, and adaptation to face environmental stresses. The advance of metagenomics and metatranscriptomics approaches has strongly driven the study and recognition of plant microbiome impacts. Research in this regard provides comprehensive information about the taxonomic and functional aspects of microbial plant communities, contributing to a better understanding of their dynamics. Evidence of the plant microbiome's functional potential has boosted its exploitation to develop more ecological and sustainable agricultural practices that impact human health. Although microbial inoculants' development and use are promising to revolutionize crop production, interdisciplinary studies are needed to identify new candidates and promote effective practical applications. On the other hand, there are challenges in understanding and analyzing complex data generated within a plant microbiome project's scope. This review presents aspects about the complex structuring and assembly of the microbiome in the host plant's tissues, metagenomics, and metatranscriptomics approaches for its understanding, covering descriptions of recent studies concerning metagenomics to characterize the microbiome of non-model plants under different aspects. Studies involving bio-inoculants, isolated from plant microbial communities, capable of assisting in crops' productivity, are also reviewed.
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Affiliation(s)
- Thamara de Medeiros Azevedo
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, PE, CEP: 50670-901, Brazil
| | - Flávia Figueira Aburjaile
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, PE, CEP: 50670-901, Brazil
| | - José Ribamar Costa Ferreira-Neto
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, PE, CEP: 50670-901, Brazil
| | - Valesca Pandolfi
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, PE, CEP: 50670-901, Brazil
| | - Ana Maria Benko-Iseppon
- Departamento de Genética, Centro de Biociências, Universidade Federal de Pernambuco (UFPE), Av. Prof. Moraes Rego, 1235 - Cidade Universitária, Recife, PE, CEP: 50670-901, Brazil.
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Plant Growth-Promoting Rhizobacteria as a Green Alternative for Sustainable Agriculture. SUSTAINABILITY 2021. [DOI: 10.3390/su131910986] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Environmental stress is a major challenge for sustainable food production as it reduces yield by generating reactive oxygen species (ROS) which pose a threat to cell organelles and biomolecules such as proteins, DNA, enzymes, and others, leading to apoptosis. Plant growth-promoting rhizobacteria (PGPR) offers an eco-friendly and green alternative to synthetic agrochemicals and conventional agricultural practices in accomplishing sustainable agriculture by boosting growth and stress tolerance in plants. PGPR inhabit the rhizosphere of soil and exhibit positive interaction with plant roots. These organisms render multifaceted benefits to plants by several mechanisms such as the release of phytohormones, nitrogen fixation, solubilization of mineral phosphates, siderophore production for iron sequestration, protection against various pathogens, and stress. PGPR has the potential to curb the adverse effects of various stresses such as salinity, drought, heavy metals, floods, and other stresses on plants by inducing the production of antioxidant enzymes such as catalase, peroxidase, and superoxide dismutase. Genetically engineered PGPR strains play significant roles to alleviate the abiotic stress to improve crop productivity. Thus, the present review will focus on the impact of PGPR on stress resistance, plant growth promotion, and induction of antioxidant systems in plants.
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Nagda A, Meena M, Shah MP. Bioremediation of industrial effluents: A synergistic approach. J Basic Microbiol 2021; 62:395-414. [PMID: 34516028 DOI: 10.1002/jobm.202100225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/14/2021] [Accepted: 08/28/2021] [Indexed: 12/11/2022]
Abstract
Industrial wastewater consists of inorganic and organic toxic pollutants that pose a threat to environmental sustainability. The organic pollutants are a menace to the environment and life forms than the inorganic substances and pose teratogenic, mutagenic, carcinogenic, and other serious detrimental effects on the living entities, moreover, they have a gene-altering effect on aquatic life forms and affect the soil fertility and quality. Removal of varying effluents having recalcitrant contaminants with conventional treatment technologies is strenuous. In contrast to physical and chemical methods, biological treatment methods are environmentally friendly, versatile, efficient, and technically feasible with low operational costs and energy footprints. Biological treatment is a secondary wastewater treatment system that utilizes the metabolic activities of microorganisms to oxidize or reduce inorganic and organic compounds and transform them into dense biomass, which later can be removed by the sedimentation process. Biological treatment in bioreactors is an ex situ method of bioremediation and provides the benefits of continuous monitoring under controlled parameters. This paper attempts to provide a review of bioremediation technologies discussing most concerning widespread bioreactors and advances used for different industrial effluents with their comparative merits and limitations.
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Affiliation(s)
- Adhishree Nagda
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Maulin P Shah
- Environmental Technology Lab, Bharuch, Gujarat, India
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Bargaz A, Elhaissoufi W, Khourchi S, Benmrid B, Borden KA, Rchiad Z. Benefits of phosphate solubilizing bacteria on belowground crop performance for improved crop acquisition of phosphorus. Microbiol Res 2021; 252:126842. [PMID: 34438221 DOI: 10.1016/j.micres.2021.126842] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/31/2021] [Accepted: 08/04/2021] [Indexed: 10/20/2022]
Abstract
Although research on plant growth promoting bacteria began in the 1950s, basic and applied research on bacteria improving use of phosphorus (P) continues to be a priority among many agricultural research institutions. Ultimately, identifying agriculturally beneficial microbes, notably P solubilizing bacteria (PSB), that enhance the efficient use of P supports more sustainable cropping systems and the judicious use of mineral nutrients. In parallel, there is more attention on improving crop root P acquisition of existing soil P pools as well as by increasing the proportion of fertilizer P that is taken up by crops. Today, new lines of research are emerging to investigate the co-optimization of PSB-fertilizer-crop root processes for improved P efficiency and agricultural performance. In this review, we compile and summarize available findings on the beneficial effects of PSB on crop production with a focus on crop P acquisition via root system responses at the structural, functional and transcriptional levels. We discuss the current state of knowledge on the mechanisms of PSB-mediated P availability, both soil- and root-associated, as well as crop uptake via P solubilization, mineralization and mobilization, mainly through the production of organic acids and P-hydrolyzing enzymes, and effects on phytohormone signaling for crop root developement. The systematic changes caused by PSB on crop roots are discussed and contextualized within promising functional trait-based frameworks. We also detail agronomic profitability of P (mineral and organic) and PSB co-application, in amended soils and inoculated crops, establishing the connection between the influence of PSB on agroecosystem production and the impact of P fertilization on microbial diversity and crop functional traits for P acquisition.
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Affiliation(s)
- Adnane Bargaz
- Mohammed VI Polytechnic University, Agrobiosciences Program, Plant & Soil Microbiome Subprogram, Bengurir, 43150, Morocco.
| | - Wissal Elhaissoufi
- Mohammed VI Polytechnic University, Agrobiosciences Program, Plant & Soil Microbiome Subprogram, Bengurir, 43150, Morocco; Cadi Ayyad University, Faculty of Sciences and Techniques, Biology Dep., Marrakech, Morocco
| | - Said Khourchi
- Mohammed VI Polytechnic University, Agrobiosciences Program, Plant & Soil Microbiome Subprogram, Bengurir, 43150, Morocco; University of Liège, Gembloux Agro-Bio Tech, Liège, Belgium
| | - Bouchra Benmrid
- Mohammed VI Polytechnic University, Agrobiosciences Program, Plant & Soil Microbiome Subprogram, Bengurir, 43150, Morocco
| | - Kira A Borden
- University of British Columbia, Faculty of Land and Food Systems, Vancouver, V6T 1Z4, Canada
| | - Zineb Rchiad
- Mohammed VI Polytechnic University, Agrobiosciences Program, Plant & Soil Microbiome Subprogram, Bengurir, 43150, Morocco
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Ghani MU, Asghar HN, Niaz A, Ahmad Zahir Z, Nawaz MF, Häggblom MM. Efficacy of rhizobacteria for degradation of profenofos and improvement in tomato growth. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:463-473. [PMID: 34304658 DOI: 10.1080/15226514.2021.1952927] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Pesticides are widely used for managing pathogens and pests for sustainable agricultural output to feed around seven billion people worldwide. After their targeted role, residues of these compounds may build up and persist in soils and in the food chain. This study evaluated the efficiency of bacterial strains capable of plant growth promotion and biodegradation of profenofos. To execute this, bacteria were isolated from an agricultural area with a history of repeated application of profenofos. The profenofos degrading bacterial strains with growth-promoting characteristics were identified based on biochemical and molecular approaches through partial 16S ribosomal rRNA gene sequencing. The results revealed that one strain, Enterobacter cloacae MUG75, degraded over 90% profenofos after 9 days of incubation. Similarly, plant growth was significantly increased in plants grown in profenofos (100 mg L-1) contaminated soil inoculated with the same strain. The study demonstrated that inoculation of profenofos degrading bacterial strains increased plant growth and profenofos degradation. Novelty statementPesticides are extensively applied in the agriculture sector to overcome pest attacks and to increase food production to fulfill the needs of the growing world population. Residues of these pesticides can persist in the environment for long periods, may enter the groundwater reservoirs and cause harmful effects on living systems highlighting the need for bioremediation of pesticide-contaminated environments. Microbes can use pesticides as a source of carbon and energy and convert them into less toxic and non-toxic products. Application of profenofos degrading rhizobacteria in interaction with the plants in the rhizosphere can remediate the pesticide-contaminated soils and minimize their uptake into the food chain. Hence, this approach can improve soil health and food quality without compromising the environment.
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Affiliation(s)
- Muhammad Usman Ghani
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Hafiz Naeem Asghar
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Abdullah Niaz
- Pesticide Residue Laboratory, Kala Shah Kaku, Pakistan
| | - Zahir Ahmad Zahir
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Farrakh Nawaz
- Department of Forestry and Range Management, University of Agriculture, Faisalabad, Pakistan
| | - Max M Häggblom
- Department of Biochemistry and Microbiology, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
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Swapnil P, Meena M, Singh SK, Dhuldhaj UP, Harish, Marwal A. Vital roles of carotenoids in plants and humans to deteriorate stress with its structure, biosynthesis, metabolic engineering and functional aspects. CURRENT PLANT BIOLOGY 2021; 26:100203. [DOI: 10.1016/j.cpb.2021.100203] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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Meena M, Zehra A, Swapnil P, Harish, Marwal A, Yadav G, Sonigra P. Endophytic Nanotechnology: An Approach to Study Scope and Potential Applications. Front Chem 2021; 9:613343. [PMID: 34113600 PMCID: PMC8185355 DOI: 10.3389/fchem.2021.613343] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 01/18/2021] [Indexed: 12/11/2022] Open
Abstract
Nanotechnology has become a very advanced and popular form of technology with huge potentials. Nanotechnology has been very well explored in the fields of electronics, automobiles, construction, medicine, and cosmetics, but the exploration of nanotecnology's use in agriculture is still limited. Due to climate change, each year around 40% of crops face abiotic and biotic stress; with the global demand for food increasing, nanotechnology is seen as the best method to mitigate challenges in disease management in crops by reducing the use of chemical inputs such as herbicides, pesticides, and fungicides. The use of these toxic chemicals is potentially harmful to humans and the environment. Therefore, using NPs as fungicides/ bactericides or as nanofertilizers, due to their small size and high surface area with high reactivity, reduces the problems in plant disease management. There are several methods that have been used to synthesize NPs, such as physical and chemical methods. Specially, we need ecofriendly and nontoxic methods for the synthesis of NPs. Some biological organisms like plants, algae, yeast, bacteria, actinomycetes, and fungi have emerged as superlative candidates for the biological synthesis of NPs (also considered as green synthesis). Among these biological methods, endophytic microorganisms have been widely used to synthesize NPs with low metallic ions, which opens a new possibility on the edge of biological nanotechnology. In this review, we will have discussed the different methods of synthesis of NPs, such as top-down, bottom-up, and green synthesis (specially including endophytic microorganisms) methods, their mechanisms, different forms of NPs, such as magnesium oxide nanoparticles (MgO-NPs), copper nanoparticles (Cu-NPs), chitosan nanoparticles (CS-NPs), β-d-glucan nanoparticles (GNPs), and engineered nanoparticles (quantum dots, metalloids, nonmetals, carbon nanomaterials, dendrimers, and liposomes), and their molecular approaches in various aspects. At the molecular level, nanoparticles, such as mesoporous silica nanoparticles (MSN) and RNA-interference molecules, can also be used as molecular tools to carry genetic material during genetic engineering of plants. In plant disease management, NPs can be used as biosensors to diagnose the disease.
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Affiliation(s)
- Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, India
| | - Andleeb Zehra
- 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
| | - Harish
- Plant Biotechnology Laboratory, Department of Botany, Mohanlal Sukhadia University, Udaipur, India
| | - Avinash Marwal
- Department of Biotechnology, Vigyan Bhawan, Mohanlal Sukhadia University, Udaipur, India
| | - Garima Yadav
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, India
| | - Priyankaraj Sonigra
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, India
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Hyder S, Gondal AS, Rizvi ZF, Atiq R, Haider MIS, Fatima N, Inam-Ul-Haq M. Biological Control of Chili Damping-Off Disease, Caused by Pythium myriotylum. Front Microbiol 2021; 12:587431. [PMID: 34054741 PMCID: PMC8155717 DOI: 10.3389/fmicb.2021.587431] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 04/12/2021] [Indexed: 11/21/2022] Open
Abstract
Pythium myriotylum is a notorious soil-borne oomycete that causes post-emergence damping-off in chili pepper. Of various disease management strategies, utilization of plant growth promoting rhizobacteria (PGPR) in disease suppression and plant growth promotion is an interesting strategy. The present study was performed to isolate and characterize PGPR indigenous to the chili rhizosphere in Pakistan, and to test the potential to suppress the damping-off and plant growth promotion in chili. Out of a total of 28 antagonists, eight bacterial isolates (4a2, JHL-8, JHL-12, 1C2, RH-24, 1D, 5C, and RH-87) significantly suppressed the colony growth of P. myriotylum in a dual culture experiment. All the tested bacterial isolates were characterized for biochemical attributes, and 16S rRNA sequence based phylogenetic analysis identified these isolates as Flavobacterium spp., Bacillus megaterium, Pseudomonas putida, Bacillus cereus, and Pseudomonas libanensis. All the tested bacterial isolates showed positive test results for ammonia production, starch hydrolase (except 4a2), and hydrogen cyanide production (except 4a2 and 1D). All the tested antagonists produced indole-3-acetic acid (13.4–39.0 μg mL–1), solubilized inorganic phosphate (75–103 μg mL–1), and produced siderophores (17.1–23.7%) in vitro. All the tested bacterial isolates showed varying levels of susceptibility and resistance response against different antibiotics and all these bacterial isolates were found to be non-pathogenic to chili seeds and notably enhanced percentage seed germination, plumule, redical length, and vigor index over un-inoculated control. Additionally, under pathogen pressure, bacterization increased the defense related enzymes such as Peroxidase (PO), polyphenol oxidase (PPO), and phenylalanine ammonia-lyase (PAL) activates. Moreover, the treatment of chili seeds with these bacterial isolates significantly suppressed the damping-off caused by P. myriotylum and improved PGP traits compared to the control. In addition, a positive correlation was noticed between shoot, root length, and dry shoot and root weight, and there was a negative correlation between dry shoot, root weight, and seedling percentage mortality. These results showed that native PGPR possesses multiple traits beneficial to the chili plants and can be used to develop eco-friendly and effective seed treatment formulation as an alternative to synthetic chemical fungicides.
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Affiliation(s)
- Sajjad Hyder
- Department of Botany, Government College Women University, Sialkot, Pakistan
| | | | - Zarrin Fatima Rizvi
- Department of Botany, Government College Women University, Sialkot, Pakistan
| | - Rashida Atiq
- Department of Plant Pathology, Bahauddin Zakariya University, Multan, Pakistan
| | | | - Nida Fatima
- Department of Soil Science and SWC, PMAS Arid Agriculture University, Rawalpindi, Pakistan
| | - Muhammad Inam-Ul-Haq
- Department of Plant Pathology, PMAS Arid Agriculture University, Rawalpindi, Pakistan
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Meena M, Sonigra P, Yadav G. Biological-based methods for the removal of volatile organic compounds (VOCs) and heavy metals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:2485-2508. [PMID: 33095900 DOI: 10.1007/s11356-020-11112-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
The current scenario of increased population and industrial advancement leads to the spoliation of freshwater and tapper of the quality of water. These results decrease in freshwater bodies near all of the areas. Besides, organic and inorganic compounds discharged from different sources into the available natural water bodies are the cause of pollution. The occurrence of heavy metals in water and volatile organic compounds (VOCs) in the air is responsible for a vast range of negative impacts on the atmosphere and human health. Nonetheless, high uses of heavy metals for human purposes may alter the biochemical and geochemical equilibrium. The major air contaminants which are released into the surroundings known as VOCs are produced through different kinds of sources, such as petrochemical and pharmaceutical industries. VOCs are known to cause various health hazards. VOCs are a pivotal group of chemicals that evaporate readily at room temperature. To get over this problem, biofiltration technology has been evolved for the treatment of heavy metals using biological entities such as plants, algae, fungi, and bacteria. Biofiltration technology is a beneficial and sustainable method for the elimination of toxic pollutants from the aquatic environment. Various types of biological technologies ranging from biotrickling filters to biofilters have been developed and they are cost-effective, simple to fabricate, and easy to perform. A significant advantage of this process is the pollutant that is transformed into biodegradable trashes which can decompose within an average time period, thus yielding no secondary pollutants. The aim of this article is to scrutinize the role of biofiltration in the removal of heavy metals in wastewater and VOCs and also to analyze the recent bioremediation technologies and methods.
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Affiliation(s)
- Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, 313001, India.
| | - Priyankaraj Sonigra
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, 313001, India
| | - Garima Yadav
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, 313001, India
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Meena M, Swapnil P, Yadav G, Sonigra P. Role of fungi in bio-production of nanomaterials at megascale. FUNGI BIO-PROSPECTS IN SUSTAINABLE AGRICULTURE, ENVIRONMENT AND NANO-TECHNOLOGY 2021:453-474. [DOI: 10.1016/b978-0-12-821734-4.00006-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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Meena M, Yadav G, Sonigra P, Nagda A. Bacteriogenic synthesis of gold nanoparticles: mechanisms and applications. NANOBIOTECHNOLOGY 2021:75-90. [DOI: 10.1016/b978-0-12-822878-4.00005-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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Sudewi S, Ala A, Patandjengi B, Farid B D R M. Isolation of phosphate solubilizing bacteria from the rhizosphere of local aromatic rice in Bada Valley Central Sulawesi, Indonesia. ACTA ACUST UNITED AC 2020. [DOI: 10.1088/1755-1315/575/1/012017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Barupal T, Meena M, Sharma K. Comparative analysis of bioformulations against Curvularia lunata (Wakker) Boedijn causing leaf spot disease of maize. ARCHIVES OF PHYTOPATHOLOGY AND PLANT PROTECTION 2020:1-12. [DOI: https:/doi.org/10.1080/03235408.2020.1827657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/08/2020] [Accepted: 09/09/2020] [Indexed: 06/18/2023]
Affiliation(s)
- Tansukh Barupal
- Microbial Research Laboratory, Department of Botany, Mohanlal Sukhadia University, Udaipur, India
| | - Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Kanika Sharma
- Microbial Research Laboratory, Department of Botany, Mohanlal Sukhadia University, Udaipur, India
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Barupal T, Meena M, Sharma K. Comparative analysis of bioformulations against Curvularia lunata (Wakker) Boedijn causing leaf spot disease of maize. ARCHIVES OF PHYTOPATHOLOGY AND PLANT PROTECTION 2020:1-12. [DOI: 10.1080/03235408.2020.1827657] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/08/2020] [Accepted: 09/09/2020] [Indexed: 06/18/2023]
Affiliation(s)
- Tansukh Barupal
- Microbial Research Laboratory, Department of Botany, Mohanlal Sukhadia University, Udaipur, India
| | - Mukesh Meena
- Laboratory of Phytopathology and Microbial Biotechnology, Department of Botany, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
| | - Kanika Sharma
- Microbial Research Laboratory, Department of Botany, Mohanlal Sukhadia University, Udaipur, India
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Jain D, Kumari A, Saheewala H, Sanadhya S, Maheshwari D, Meena RH, Singh A, Gera R, Mohanty SR. Biochemical, functional and molecular characterization of pigeon pea rhizobia isolated from semi-arid regions of India. Arch Microbiol 2020; 202:1809-1816. [PMID: 32436039 DOI: 10.1007/s00203-020-01904-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/16/2020] [Accepted: 05/11/2020] [Indexed: 11/26/2022]
Abstract
Pigeon pea (Cajanus cajan (L.) Millspaugh) is among the top ten legumes grown globally not only having high tolerance to environmental stresses along, but also has the high biomass and productivity with optimal nutritional profiles. In the present study, 55 isolates of rhizobia were identified from 22 nodule samples of pigeon pea collected from semi-arid regions of India on the basis of morphological, biochemical, plant growth promoting activities and their ability to tolerate the stress conditions viz. pH, salt, temperature and drought stress. Amongst all the 55 isolates, 37 isolates showed effective nodulation under in vitro conditions in pigeon pea. Further, five isolates having multiple PGP activities and high in vitro symbiotic efficiency were subjected to 16S rRNA sequencing and confirmed their identities as Rhizobium, Mesorhizobium, Sinorhizobium sp. Further these 37 isolates were characterized at molecular level using ARDRA and revealed significant molecular diversity. Based on UPGMA clustering analysis, these isolates showed significant molecular diversity. The high degree of molecular diversity is due to mixed cropping of legumes in the region. The assessment of genetic diversity and molecular characterization of novel strains is a very important tool for the replacement of ineffective rhizobial strains with the efficient strains for the improvement in the nodulation and pigeon pea quality. The pigeon pea isolates with multiple PGPR activities could be further used for commercial production.
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Affiliation(s)
- Devendra Jain
- Department of Molecular Biology and Biotechnology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan, India.
| | - Anisha Kumari
- Department of Molecular Biology and Biotechnology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan, India
| | - Heena Saheewala
- Department of Molecular Biology and Biotechnology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan, India
| | - Suman Sanadhya
- Department of Molecular Biology and Biotechnology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan, India
| | - Deepali Maheshwari
- Department of Molecular Biology and Biotechnology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan, India
| | - Ram Hari Meena
- Department of Soil Science and Agricultural Chemistry, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan, India
| | - Abhijeet Singh
- Department of Biosciences, Manipal University Jaipur, Jaipur, Rajasthan, India
| | - Rajesh Gera
- All India Network Project on Soil Biodiversity-Biofertilizers, Department of Microbiology, CCS Haryana Agricultural University, Hisar, 125004, India
| | - S R Mohanty
- All India Network Project on Soil Biodiversity-Biofertilizers, ICAR-Indian Institute of Soil Science, Bhopal, India
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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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42
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Chittora D, Meena M, Barupal T, Swapnil P. Cyanobacteria as a source of biofertilizers for sustainable agriculture. Biochem Biophys Rep 2020; 22:100737. [PMID: 32083191 PMCID: PMC7021550 DOI: 10.1016/j.bbrep.2020.100737] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/04/2020] [Accepted: 01/24/2020] [Indexed: 12/29/2022] Open
Abstract
Continuous increase in global human population and depletion of natural resources of energy posing threat to environment needs, sustainable supply of food and energy. The most ecofriendly approach 'green technology' has been exploited for biofertilizer preparation. Cyanobacteria are the most successful and sustained prokaryotic organism during the course of evolution. They are considered as one of the primitive life forms found on our planet. Cyanobacteria are emerging candidates for efficiently conversion of radiant energy into chemical energy. This biological system produces oxygen as a by-product. Cyanobacterial biomass can also be used for the large scale production of food, energy, biofertilizers, secondary metabolites, cosmetics and medicines. Therefore, cyanobacteria are used in ecofriendly sustainable agricultural practice for production of biomass of very high value and decreasing the level of CO2. This review article describes the methods of mass production of cyanobacterial biofertilizers and their applications in agriculture and industrial level.
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Affiliation(s)
- Deepali Chittora
- Department of Botany, Mohanlal Sukhadia University, Udaipur, 313001, Rajasthan, India
| | - Mukesh Meena
- Department of Botany, Mohanlal Sukhadia University, Udaipur, 313001, Rajasthan, India
| | - Tansukh Barupal
- Department of Botany, Mohanlal Sukhadia University, Udaipur, 313001, Rajasthan, India
| | - Prashant Swapnil
- International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
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Liu Z, Wang H, Xu W, Wang Z. Isolation and evaluation of the plant growth promoting rhizobacterium Bacillus methylotrophicus (DD-1) for growth enhancement of rice seedling. Arch Microbiol 2020; 202:2169-2179. [PMID: 32519022 DOI: 10.1007/s00203-020-01934-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/28/2020] [Accepted: 06/01/2020] [Indexed: 11/29/2022]
Abstract
Bacillus methylotrophicus has been demonstrated to promote growth of various plants, whereas the promoting effect of B. methylotrophicus on rice growth has been rarely reported. In this study, B. methylotrophicus DD-1, capable of efficiently promoting the growth of rice, was isolated from the root soil of rice plants. The isolate exhibited potassium-solubilizing (1.18 mg/L), Indole-3-acetic acid (IAA) (87.26 mg/L), Gibberellic acid (GA) (25.91 mg/L) and Siderophore production activity (52.32%). As indicated from the result, plant growth parameters (e.g., dry weight, tiller number, root and shoot length) of rice seedlings treated with the isolate DD-1 were more effective than those of the control group in pot and soilless culture experiments. Moreover, the adsorption capacity of rice roots which were soaked in the bacterial suspension of isolate increased with the increase in concentration and absorption time. In sterilized and unsterilized soil, conformation of root colonization activity by bacterial isolate established by its nearer existence to the rice root. Thus, the B. methylotrophicus DD-1 enhances plant growth promotion by multifarious growth promoting and root colonization traits, thereby augmenting potassium level in soil. Henceforth, the potential bacterium could be exploited for the development of biological fertilizer, leading towards sustainable agronomy.
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Affiliation(s)
- Zeping Liu
- School of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China.,Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, Heilongjiang, China
| | - Hengxu Wang
- School of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China.,Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, Heilongjiang, China
| | - Weihui Xu
- School of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China.,Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, Heilongjiang, China
| | - Zhigang Wang
- School of Life Science and Agriculture and Forestry, Qiqihar University, Qiqihar, 161006, Heilongjiang, China. .,Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar, 161006, Heilongjiang, China.
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Guerrieri MC, Fanfoni E, Fiorini A, Trevisan M, Puglisi E. Isolation and Screening of Extracellular PGPR from the Rhizosphere of Tomato Plants after Long-Term Reduced Tillage and Cover Crops. PLANTS 2020; 9:plants9050668. [PMID: 32466288 PMCID: PMC7285081 DOI: 10.3390/plants9050668] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 02/04/2023]
Abstract
Plant growth promoting rhizobacteria provide an innovative solution to address challenges in sustainable agro-ecosystems, improving plant growth as well as acting as agents of biocontrol. In this study autochthonous bacteria were isolated from the rhizosphere of processing tomato plants (Solanum lycopersicum L.) cultivated with conservation agriculture practices (i.e., reduced tillage and cover crops), and evaluated for both growth-promoting activities (PGPAs), and antagonistic potential against the phytopathogenic pest Sclerotinia sclerotiorum. Considering the several activities of PGPR, we decided to structure the screening with a hierarchic approach, starting from testing the capability of fixing nitrogen. The obtained bacteria were processed through the molecular typing technique rep-PCR (Repetitive Extragenic Palindromic) in order to discriminate microbial strains with the same profiles, and identified via 16S rDNA sequencing. Thirty-eight selected isolates were screened in vitro for different activities related to plant nutrition and plant growth regulation as well as for antifungal traits. Isolated bacteria were found to exhibit different efficiencies in indoleacetic acid production and siderophore production, phosphate solubilization and biocontrol activity against the widespread soil-borne plant pathogen S. sclerotiorum. All the 38 bacterial isolates showed at least one property tested. With a view to detect the suitable candidates to be developed as biofertilizers, the selected isolates were ranked by their potential ability to function as PGPR. Thus, consortium of native PGPR bacteria inoculants may represent a suitable solution to address the challenges in sustainable agriculture, to ensure crop yield and quality, lowering the application of chemicals input.
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Affiliation(s)
- Maria Chiara Guerrieri
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (M.C.G.); (E.F.); (E.P.)
| | - Elisabetta Fanfoni
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (M.C.G.); (E.F.); (E.P.)
| | - Andrea Fiorini
- Department of Sustainable Crop Production, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy;
| | - Marco Trevisan
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (M.C.G.); (E.F.); (E.P.)
- Correspondence: ; Tel.: +39-0523-599152
| | - Edoardo Puglisi
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (M.C.G.); (E.F.); (E.P.)
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Anusaraporn S, Autarmat S, Treesubsuntorn C, Thiravetyan P. Application of Bacillus sp. N7 to enhance ozone tolerance of various Oryza sativa in vegetative phase: Possible mechanism and rice productivity. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101591] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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46
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Molecular Diversity Analysis of Plant Growth Promoting Rhizobium Isolated from Groundnut and Evaluation of Their Field Efficacy. Curr Microbiol 2020; 77:1550-1557. [PMID: 32248283 DOI: 10.1007/s00284-020-01963-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 03/21/2020] [Indexed: 10/24/2022]
Abstract
Rhizobium are nitrogen-fixing bacteria which possess the nif gene that codes for the nitrogenase enzyme involved in the reduction of atmospheric dinitrogen (N2) to ammonia. Thirty rhizobial strains were identified from ten groundnut plant root nodules collected from semi-arid regions of Rajasthan, India. The isolates were initially identified on the basis of morphological, biochemical, and molecular characteristics. These rhizobium strains were further screened for plant growth promoting activities. Twenty-eight strains were able to produce indole acetic acid, nine strains could solubilize phosphate, and twenty-nine strains exhibited positive results for siderophore and ammonia production. All the bacterial strains were able to efficiently nodulate the groundnut under pot conditions and based on multiple PGP activities six strains were selected for field evaluation. Field experiments confirmed the effectiveness of these selected rhizobium strains resulted in significantly higher nodule number, nodule dry weight, grain yield, and yield components of inoculated plants. Inoculation of the rhizobium strain GN223 followed by GN221 resulted in high yield and field efficiency. Isolation of effective microbial strains is the prerequisite to increase the yield which is evident from the field data of the present study. Hence, these strains might serve as proficient inoculants.
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A study on preventive effects of Lawsonia inermis L. bioformulations against leaf spot disease of maize. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2019.101473] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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48
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Barupal T, Meena M, Sharma K. A study on preventive effects of Lawsonia inermis L. bioformulations against leaf spot disease of maize. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020; 23:101473. [DOI: https:/doi.org/10.1016/j.bcab.2019.101473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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49
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Kumar V, Sharma N, Maitra SS, Lakkaboyana SK. In vivo removal of profenofos in agricultural soil and plant growth promoting activity on Vigna radiata by efficient bacterial formulation. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 22:585-593. [PMID: 31823647 DOI: 10.1080/15226514.2019.1696743] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study evaluated the plant growth and profenofos (PF) removal efficiency of Acinetobacter sp.33F and Comamonas sp. 51 F bacteria as individual strains and in combination F1. Plant growth-promoting activities such as indole 3 acetic acid (IAA) production, 1-aminocyclopropane-1-carboxylate (ACC) deaminase, phosphate solubilization, ammonia production, and exopolysaccharide (EPS) production were observed in Acinetobacter sp. 33 F and Comamonas sp. 51 F. However, PGP properties observed were higher in Acinetobacter sp. 33 F as compared to the Comamonas sp. 51 F. In pot sand and pot soil studies, the physiological parameters such as sprout length, shoot length, root length, chlorophyll a, chlorophyll b, and carotenoids were higher for combination F1. PF degradation in pot sand and pot soil resulted in highest degradation by combination F1. In pot soil study, soil enzyme activities such as cellulase, dehydrogenase, urease, protease, and phosphate activities and root cross-section area, total stele area and xylem vessel area were recorded higher for the formulation F1. The study demonstrated that the together Acinetobacter sp. 33 F and Comamonas sp. 51 F as formulation has higher plant growth-promoting activities as compared to the individual bacteria.
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Affiliation(s)
- Vinay Kumar
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Neha Sharma
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - S S Maitra
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
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Meena M, Divyanshu K, Kumar S, Swapnil P, Zehra A, Shukla V, Yadav M, Upadhyay RS. Regulation of L-proline biosynthesis, signal transduction, transport, accumulation and its vital role in plants during variable environmental conditions. Heliyon 2019; 5:e02952. [PMID: 31872123 PMCID: PMC6909094 DOI: 10.1016/j.heliyon.2019.e02952] [Citation(s) in RCA: 151] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/28/2019] [Accepted: 11/25/2019] [Indexed: 12/19/2022] Open
Abstract
Background In response to various environmental stresses, many plant species synthesize L-proline in the cytosol and accumulates in the chloroplasts. L-Proline accumulation in plants is a well-recognized physiological reaction to osmotic stress prompted by salinity, drought and other abiotic stresses. L-Proline plays several protective functions such as osmoprotectant, stabilizing cellular structures, enzymes, and scavenging reactive oxygen species (ROS), and keeps up redox balance in adverse situations. In addition, ample-studied osmoprotective capacity, L-proline has been also ensnared in the regulation of plant improvement, including flowering, pollen, embryo, and leaf enlargement. Scope and conclusions Albeit, ample is now well-known about L-proline metabolism, but certain characteristics of its biological roles are still indistinct. In the present review, we discuss the L-proline accumulation, metabolism, signaling, transport and regulation in the plants. We also discuss the effects of exogenous L-proline during different environmental conditions. L-Proline biosynthesis and catabolism are controlled by several cellular mechanisms, of which we identify only very fewer mechanisms. So, in the future, there is a requirement to identify such types of cellular mechanisms.
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Affiliation(s)
- Mukesh Meena
- Department of Botany, Mohanlal Sukhadia University, Udaipur, 313001, India.,Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Kumari Divyanshu
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Sunil Kumar
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Prashant Swapnil
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.,International Centre for Genetic Engineering and Biotechnology, New Delhi, 110067, India
| | - Andleeb Zehra
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Vaishali Shukla
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Mukesh Yadav
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - R S Upadhyay
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
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