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Baukova A, Bogun A, Sushkova S, Minkina T, Mandzhieva S, Alliluev I, Jatav HS, Kalinitchenko V, Rajput VD, Delegan Y. New Insights into Pseudomonas spp.-Produced Antibiotics: Genetic Regulation of Biosynthesis and Implementation in Biotechnology. Antibiotics (Basel) 2024; 13:597. [PMID: 39061279 PMCID: PMC11273644 DOI: 10.3390/antibiotics13070597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/20/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
Pseudomonas bacteria are renowned for their remarkable capacity to synthesize antibiotics, namely mupirocin, gluconic acid, pyrrolnitrin, and 2,4-diacetylphloroglucinol (DAPG). While these substances are extensively employed in agricultural biotechnology to safeguard plants against harmful bacteria and fungi, their potential for human medicine and healthcare remains highly promising for common science. However, the challenge of obtaining stable producers that yield higher quantities of these antibiotics continues to be a pertinent concern in modern biotechnology. Although the interest in antibiotics of Pseudomonas bacteria has persisted over the past century, many uncertainties still surround the regulation of the biosynthetic pathways of these compounds. Thus, the present review comprehensively studies the genetic organization and regulation of the biosynthesis of these antibiotics and provides a comprehensive summary of the genetic organization of antibiotic biosynthesis pathways in pseudomonas strains, appealing to both molecular biologists and biotechnologists. In addition, attention is also paid to the application of antibiotics in plant protection.
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Affiliation(s)
- Alexandra Baukova
- Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center “Pushchino Scientific Center for Biological Research of Russian Academy of Sciences” (FRC PSCBR RAS), 142290 Pushchino, Moscow Region, Russia; (A.B.); (A.B.)
- Pushchino Branch of Federal State Budgetary Educational Institution of Higher Education “Russian Biotechnology University (ROSBIOTECH)”, 142290 Pushchino, Moscow Region, Russia
| | - Alexander Bogun
- Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center “Pushchino Scientific Center for Biological Research of Russian Academy of Sciences” (FRC PSCBR RAS), 142290 Pushchino, Moscow Region, Russia; (A.B.); (A.B.)
| | - Svetlana Sushkova
- Academy of Biology and Biotechnology behalf D.I. Ivanovskyi, Southern Federal University, 344006 Rostov-on-Don, Russia; (S.S.); (T.M.); (S.M.); (I.A.); (V.D.R.)
| | - Tatiana Minkina
- Academy of Biology and Biotechnology behalf D.I. Ivanovskyi, Southern Federal University, 344006 Rostov-on-Don, Russia; (S.S.); (T.M.); (S.M.); (I.A.); (V.D.R.)
| | - Saglara Mandzhieva
- Academy of Biology and Biotechnology behalf D.I. Ivanovskyi, Southern Federal University, 344006 Rostov-on-Don, Russia; (S.S.); (T.M.); (S.M.); (I.A.); (V.D.R.)
| | - Ilya Alliluev
- Academy of Biology and Biotechnology behalf D.I. Ivanovskyi, Southern Federal University, 344006 Rostov-on-Don, Russia; (S.S.); (T.M.); (S.M.); (I.A.); (V.D.R.)
| | - Hanuman Singh Jatav
- Soil Science & Agricultural Chemistry, S.K.N. Agriculture University-Jobner, Jaipur 303329, Rajasthan, India;
| | - Valery Kalinitchenko
- Institute of Fertility of Soils of South Russia, 346493 Persianovka, Rostov Region, Russia;
- All-Russian Research Institute for Phytopathology of the Russian Academy of Sciences, Institute St., 5, 143050 Big Vyazyomy, Moscow Region, Russia
| | - Vishnu D. Rajput
- Academy of Biology and Biotechnology behalf D.I. Ivanovskyi, Southern Federal University, 344006 Rostov-on-Don, Russia; (S.S.); (T.M.); (S.M.); (I.A.); (V.D.R.)
| | - Yanina Delegan
- Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center “Pushchino Scientific Center for Biological Research of Russian Academy of Sciences” (FRC PSCBR RAS), 142290 Pushchino, Moscow Region, Russia; (A.B.); (A.B.)
- Academy of Biology and Biotechnology behalf D.I. Ivanovskyi, Southern Federal University, 344006 Rostov-on-Don, Russia; (S.S.); (T.M.); (S.M.); (I.A.); (V.D.R.)
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Hadian S, Smith DL, Kopriva S, Norkevičienė E, Supronienė S. Exploring Endophytic Bacteria from Artemisia spp. and Beneficial Traits on Pea Plants. PLANTS (BASEL, SWITZERLAND) 2024; 13:1684. [PMID: 38931116 PMCID: PMC11207345 DOI: 10.3390/plants13121684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 06/14/2024] [Accepted: 06/15/2024] [Indexed: 06/28/2024]
Abstract
Endophytic microorganisms represent promising solutions to environmental challenges inherent in conventional agricultural practices. This study concentrates on the identification of endophytic bacteria isolated from the root, stem, and leaf tissues of four Artemisia plant species. Sixty-one strains were isolated and sequenced by 16S rDNA. Sequencing revealed diverse genera among the isolated bacteria from different Artemisia species, including Bacillus, Pseudomonas, Enterobacter, and Lysinibacillus. AR11 and VR24 obtained from the roots of A. absinthium and A. vulgaris demonstrated significant inhibition on Fusarium c.f. oxysporum mycelial growth. In addition, AR11, AR32, and CR25 exhibited significant activity in phosphatase solubilization, nitrogen fixation, and indole production, highlighting their potential to facilitate plant growth. A comparative analysis of Artemisia species showed that root isolates from A. absinthium, A. campestris, and A. vulgaris have beneficial properties for inhibiting pathogen growth and enhancing plant growth. AR11 with 100% similarity to Bacillus thuringiensis, could be considered a promising candidate for further investigation as microbial biofertilizers. This finding highlights their potential as environmentally friendly alternatives to chemical pesticides, thereby contributing to sustainable crop protection practices.
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Affiliation(s)
- Shervin Hadian
- Microbiology Laboratory, Lithuanian Research Centre for Agriculture and Forestry, Institute of Agriculture, Instituto Ave. 1, Akademija, LT-58344 Kėdainiai, Lithuania;
| | - Donald L. Smith
- Department of Plant Science, McGill University, Montreal, QC H9X 3V9, Canada;
| | | | - Eglė Norkevičienė
- Department of Grass Breeding, Lithuanian Research Centre for Agriculture and Forestry, Institute of Agriculture, Instituto Ave. 1, Akademija, LT-58344 Kėdainiai, Lithuania;
| | - Skaidrė Supronienė
- Microbiology Laboratory, Lithuanian Research Centre for Agriculture and Forestry, Institute of Agriculture, Instituto Ave. 1, Akademija, LT-58344 Kėdainiai, Lithuania;
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Kankariya RA, Jape PV, Patil RP, Chaudhari AB, Dandi ND. Bioprospecting of multi-stress tolerant Pseudomonas sp. antagonistic to Rhizoctonia solani for enhanced wheat growth promotion. Int Microbiol 2024:10.1007/s10123-024-00517-7. [PMID: 38581482 DOI: 10.1007/s10123-024-00517-7] [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: 01/12/2024] [Revised: 03/15/2024] [Accepted: 03/22/2024] [Indexed: 04/08/2024]
Abstract
Salt affected cotton rhizospheric soil was explored for multi-stress resistance microbes to obtain 46 rhizobacteria. Of these, seven strains strongly inhibited the growth of phytopathogenic fungus Rhizoctonia solani by virtue of antifungal compound 2,4-diacetylphloroglucinol (DAPG) production. These seven strains demonstrated an array of plant growth-promoting activities as follows: (i) production of indole-3-acetic acid, ammonia, siderophore; (ii) solubilisation of phosphate, while two isolates showed Zn solubilisation. The phenetic and 16S ribotyping revealed affiliation of all the isolates to Pseudomonas guariconensis and presence of phlD gene marker for DAPG production. Among the seven isolates, strain VDA8 showed the highest DAPG production (0.16 μg ml-1) in liquid synthetic medium under aerobic conditions at 28 °C. Furthermore, sucrose, peptone, sodium hydrogen phosphate, ZnSO4, pH 8.0, and NaCl (1%) were observed as the best carbon, nitrogen, phosphate, trace element, pH, and salt concentration, respectively for maximum production of DAPG by strain VDA8 (3.62 ± 0.04 μg ml-1). The strain VDA8 was further assessed for wheat (Triticum aestivum) growth promotion by seed biopriming under laboratory (plate assay) and field condition in alkaline saline soil with pH 8.5. The field scale (324 m2) trials demonstrated 28.6% enhanced grain production compared to control demonstrating the newly isolated Pseudomonas sp. as multi-potent bioinoculant.
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Affiliation(s)
- Raksha A Kankariya
- Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon, 425001, Maharashtra, India
| | - Prasad V Jape
- Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon, 425001, Maharashtra, India
| | - Rajkamal P Patil
- Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon, 425001, Maharashtra, India
| | - Ambalal B Chaudhari
- Drs. Kiran &, Pallavi Patel Global University (KPGU), Vadodara, Gujarat, India
| | - Navin D Dandi
- Kavayitri Bahinabai Chaudhari North Maharashtra University, Jalgaon, 425001, Maharashtra, India.
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Al-Mutar DMK, Noman M, Alzawar NSA, Qasim HH, Li D, Song F. The Extracellular Lipopeptides and Volatile Organic Compounds of Bacillus subtilis DHA41 Display Broad-Spectrum Antifungal Activity against Soil-Borne Phytopathogenic Fungi. J Fungi (Basel) 2023; 9:797. [PMID: 37623568 PMCID: PMC10455929 DOI: 10.3390/jof9080797] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/26/2023] Open
Abstract
Fusarium oxysporum f. sp. niveum (Fon) is a devastating soil-borne fungus causing Fusarium wilt in watermelon. The present study investigated the biochemical mechanism underlying the antifungal activity exhibited by the antagonistic bacterial strain DHA41, particularly against Fon. Molecular characterization based on the 16S rRNA gene confirmed that DHA41 is a strain of Bacillus subtilis, capable of synthesizing antifungal lipopeptides, such as iturins and fengycins, which was further confirmed by detecting corresponding lipopeptide biosynthesis genes, namely ItuB, ItuD, and FenD. The cell-free culture filtrate and extracellular lipopeptide extract of B. subtilis DHA41 demonstrated significant inhibitory effects on the mycelial growth of Fon, Didymella bryoniae, Sclerotinia sclerotiorum, Fusarium graminearum, and Rhizoctonia solani. The lipopeptide extract showed emulsification activity and inhibited Fon mycelial growth by 86.4% at 100 µg/mL. Transmission electron microscope observations confirmed that the lipopeptide extract disrupted Fon cellular integrity. Furthermore, B. subtilis DHA41 emitted volatile organic compounds (VOCs) that exhibited antifungal activity against Fon, D. bryoniae, S. sclerotiorum, and F. graminearum. These findings provide evidence that B. subtilis DHA41 possesses broad-spectrum antifungal activity against different fungi pathogens, including Fon, through the production of extracellular lipopeptides and VOCs.
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Affiliation(s)
- Dhabyan Mutar Kareem Al-Mutar
- Key Laboratory of Crop Diseases and Insect Pests of Ministry of Agriculture, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (D.M.K.A.-M.); (M.N.); (D.L.)
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
- Basra Agriculture Directorate, Almudaina 61008, Iraq;
| | - Muhammad Noman
- Key Laboratory of Crop Diseases and Insect Pests of Ministry of Agriculture, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (D.M.K.A.-M.); (M.N.); (D.L.)
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | | | | | - Dayong Li
- Key Laboratory of Crop Diseases and Insect Pests of Ministry of Agriculture, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (D.M.K.A.-M.); (M.N.); (D.L.)
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Fengming Song
- Key Laboratory of Crop Diseases and Insect Pests of Ministry of Agriculture, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (D.M.K.A.-M.); (M.N.); (D.L.)
- Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
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Suppression of Fusarium Wilt in Watermelon by Bacillus amyloliquefaciens DHA55 through Extracellular Production of Antifungal Lipopeptides. J Fungi (Basel) 2023; 9:jof9030336. [PMID: 36983504 PMCID: PMC10053319 DOI: 10.3390/jof9030336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
Fusarium wilt caused by Fusarium oxysporum f. sp. niveum is one of the most devastating fungal diseases affecting watermelon (Citrullus lanatus L.). The present study aimed to identify potent antagonistic bacterial strains with substantial antifungal activity against F. oxysporum f. sp. niveum and to explore their potential for biocontrol of Fusarium wilt in watermelon. Out of 77 isolates from watermelon rhizosphere, six bacterial strains—namely, DHA4, DHA6, DHA10, DHA12, DHA41, and DHA55—exhibited significant antifungal activity against F. oxysporum f. sp. niveum, as well as other phytopathogenic fungi, including Didymella bryoniae, Sclerotinia sclerotiorum, Fusarium graminearum, and Rhizoctonia solani. These Gram-positive, rod-shaped, antagonistic bacterial strains were able to produce exo-enzymes (e.g., catalase, protease, and cellulase), siderophore, and indole-3-acetic acid and had the ability to solubilize phosphate. In greenhouse experiments, these antagonistic bacterial strains not only promoted plant growth but also suppressed Fusarium wilt in watermelon. Among these strains, DHA55 was the most effective, achieving the highest disease suppression of 74.9%. Strain DHA55 was identified as Bacillus amyloliquefaciens based on physiological, biochemical, and molecular characterization. B. amyloliquefaciens DHA55 produced various antifungal lipopeptides, including iturin, surfactin, and fengycin, that showed significant antifungal activities against F. oxysporum f. sp. niveum. Microscopic observations revealed that B. amyloliquefaciens DHA55 exhibited an inhibitory effect against F. oxysporum f. sp. niveum on the root surface of watermelon plants. These results demonstrate that B. amyloliquefaciens DHA55 can effectively promote plant growth and suppress the development of watermelon Fusarium wilt, providing a promising agent for the biocontrol of Fusarium wilt in watermelon.
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Egan A, Kakouli‐Duarte T. Observations on the interaction between plant growth-promoting bacteria and the root-knot nematode Meloidogyne javanica. Microbiologyopen 2022; 11:e1319. [PMID: 36479625 PMCID: PMC9701088 DOI: 10.1002/mbo3.1319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 09/07/2022] [Accepted: 09/07/2022] [Indexed: 11/27/2022] Open
Abstract
Pseudomonas fluorescens, strains L124, L228, L321, and the positive control strain F113 used in this study, produce compounds associated with plant growth promotion, biocontrol, antimicrobial and antiviral activity, and adaptation to stresses. These bacterial strains were tested in vitro and in vivo in tomato plants, to determine their potential role in Meloidogyne javanica suppression. In laboratory experiments, only 2% of M. javanica eggs hatched when exposed to the metabolites of each bacterial strain. Additionally, 100% M. javanica J2 mortality was recorded when nematodes were exposed to the metabolites of F113 and L228. In greenhouse experiments, M. javanica infected tomato plants, which were also inoculated with the bacterial strains F113 and L124, displayed the highest biomass (height, number of leaves, fresh and dry weight) of all bacterial treatments tested. Results from the development and induced systemic resistance experiments indicated that the bacterial strains F113 and L321 had the most effective biocontrol capacity over nematode infection, delayed nematode development (J3/J4, adults and galls), and reduced nematode fecundity. In addition, these results indicated that the bacterial strain L124 is an effective plant growth promoter of tomato plants. Furthermore, it was determined that the bacterial strain L321 was capable of M. javanica biocontrol. P. fluorescens F113 was effective at both increasing tomato plant biomass and M. javanica biocontrol. In an agricultural context, applying successional drenches with these beneficial plant growth promoting rhizobacteria would ensure bacteria viability in the rhizosphere of the plants, encourage positive plant bacterial interactions and increase biocontrol against M. javanica.
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Affiliation(s)
- Aoife Egan
- enviroCORE, Department of Applied ScienceSouth East Technological UniversityCarlowIreland
| | - Thomais Kakouli‐Duarte
- enviroCORE, Department of Applied ScienceSouth East Technological UniversityCarlowIreland
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Tran T, French E, Iyer-Pascuzzi AS. In vitro functional characterization predicts the impact of bacterial root endophytes on plant growth. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:5758-5772. [PMID: 35596672 DOI: 10.1093/jxb/erac228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
Utilizing beneficial microbes for crop improvement is one strategy to achieve sustainable agriculture. However, identifying microbial isolates that promote crop growth is challenging, in part because using bacterial taxonomy to predict an isolate's effect on plant growth may not be reliable. The overall aim of this work was to determine whether in vitro functional traits of bacteria were predictive of their in planta impact. We isolated 183 bacterial endophytes from field-grown roots of two tomato species, Solanum lycopersicum and S. pimpinellifolium. Sixty isolates were screened for six in vitro functional traits: auxin production, siderophore production, phosphate solubilization, antagonism to a soilborne pathogen, and the presence of two antimicrobial metabolite synthesis genes. Hierarchical clustering of the isolates based on the in vitro functional traits identified several groups of isolates sharing similar traits. We called these groups 'functional groups'. To understand how in vitro functional traits of bacteria relate to their impact on plants, we inoculated three isolates from each of the functional groups on tomato seedlings. Isolates within the same functional group promoted plant growth at similar levels, regardless of their host origin or taxonomy. Together, our results demonstrate the importance of examining root endophyte functions for improving crop production.
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Affiliation(s)
- Tri Tran
- Department of Botany and Plant Pathology, Center for Plant Biology, Purdue University, West Lafayette, IN, USA
| | - Elizabeth French
- Department of Botany and Plant Pathology, Center for Plant Biology, Purdue University, West Lafayette, IN, USA
| | - Anjali S Iyer-Pascuzzi
- Department of Botany and Plant Pathology, Center for Plant Biology, Purdue University, West Lafayette, IN, USA
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Riaz M, Akhtar N, Msimbira LA, Antar M, Ashraf S, Khan SN, Smith DL. Neocosmospora rubicola, a stem rot disease in potato: Characterization, distribution and management. Front Microbiol 2022; 13:953097. [PMID: 36033873 PMCID: PMC9403868 DOI: 10.3389/fmicb.2022.953097] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/21/2022] [Indexed: 11/23/2022] Open
Abstract
Potato (Solanum tuberosum L.) is one of the most important crops in maintaining global food security. Plant stand and yield are affected by production technology, climate, soil type, and biotic factors such as insects and diseases. Numerous fungal diseases including Neocosmospora rubicola, causing stem rot, are known to have negative effects on potato growth and yield quality. The pathogen is known to stunt growth and cause leaf yellowing with grayish-black stems. The infectivity of N. rubicola across a number of crops indicates the need to search for appropriate management approaches. Synthetic pesticides application is a major method to mitigate almost all potato diseases at this time. However, these pesticides significantly contribute to environmental damage and continuous use leads to pesticide resistance by pathogens. Consumers interest in organic products have influenced agronomists to shift toward the use of biologicals in controlling most pathogens, including N. rubicola. This review is an initial effort to carefully examine current and alternative approaches to control N. rubicola that are both environmentally safe and ecologically sound. Therefore, this review aims to draw attention to the N. rubicola distribution and symptomatology, and sustainable management strategies for potato stem rot disease. Applications of plant growth promoting bacteria (PGPB) as bioformulations with synthetic fertilizers have the potential to increase the tuber yield in both healthy and N. rubicola infested soils. Phosphorus and nitrogen applications along with the PGPB can improve plants uptake efficiency and reduce infestation of pathogen leading to increased yield. Therefore, to control N. rubicola infestation, with maximum tuber yield benefits, a pre-application of the biofertilizer is shown as a better option, based on the most recent studies. With the current limited information on the disease, precise screening of the available resistant potato cultivars, developing molecular markers for resistance genes against N. rubicola will assist to reduce spread and virulence of the pathogen.
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Affiliation(s)
- Muhammad Riaz
- Department of Plant Pathology, University of the Punjab, Lahore, Pakistan
- Department of Plant Science, McGill University, Montreal, QC, Canada
| | - Naureen Akhtar
- Department of Plant Pathology, University of the Punjab, Lahore, Pakistan
- Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, VIC, Australia
| | | | - Mohammed Antar
- Department of Plant Science, McGill University, Montreal, QC, Canada
| | - Shoaib Ashraf
- Department of Animal Science, McGill University, Montreal, QC, Canada
| | - Salik Nawaz Khan
- Department of Plant Pathology, University of the Punjab, Lahore, Pakistan
| | - Donald L. Smith
- Department of Plant Science, McGill University, Montreal, QC, Canada
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Mathur V, Ulanova D. Microbial Metabolites Beneficial to Plant Hosts Across Ecosystems. MICROBIAL ECOLOGY 2022:10.1007/s00248-022-02073-x. [PMID: 35867138 DOI: 10.1007/s00248-022-02073-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Plants are intimately connected with their associated microorganisms. Chemical interactions via natural products between plants and their microbial symbionts form an important aspect in host health and development, both in aquatic and terrestrial ecosystems. These interactions range from negative to beneficial for microbial symbionts as well as their hosts. Symbiotic microbes synchronize their metabolism with their hosts, thus suggesting a possible coevolution among them. Metabolites, synthesized from plants and microbes due to their association and coaction, supplement the already present metabolites, thus promoting plant growth, maintaining physiological status, and countering various biotic and abiotic stress factors. However, environmental changes, such as pollution and temperature variations, as well as anthropogenic-induced monoculture settings, have a significant influence on plant-associated microbial community and its interaction with the host. In this review, we put the prominent microbial metabolites participating in plant-microbe interactions in the natural terrestrial and aquatic ecosystems in a single perspective and have discussed commonalities and differences in these interactions for adaptation to surrounding environment and how environmental changes can alter the same. We also present the status and further possibilities of employing chemical interactions for environment remediation. Our review thus underlines the importance of ecosystem-driven functional adaptations of plant-microbe interactions in natural and anthropogenically influenced ecosystems and their possible applications.
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Affiliation(s)
- Vartika Mathur
- Animal Plant Interactions Lab, Department of Zoology, Sri Venkateswara College, Benito Juarez Marg, Dhaula Kuan, New Delhi-110021, India.
| | - Dana Ulanova
- Department of Marine Resource Sciences, Faculty of Agriculture and Marine Science, Kochi University, Monobe, Nankoku city, Kochi, 783-8502, Japan.
- Center for Advanced Marine Core Research, Kochi University, Monobe, Nankoku city, Kochi, 783-8502, Japan.
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Han P, Liu T, Zheng Y, Song R, Nan T, Yang X, Huang L, Yuan Y. A Mycorrhizal Bacteria Strain Isolated From Polyporus umbellatus Exhibits Broad-Spectrum Antifungal Activity. FRONTIERS IN PLANT SCIENCE 2022; 13:954160. [PMID: 35923885 PMCID: PMC9340266 DOI: 10.3389/fpls.2022.954160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
The microbes in the rhizosphere (or mycorrhizosphere) could promote plant growth, however, it is unclear whether mycorrhizosphere microbes could fight multiple fungal pathogens. In this study, twenty-one bacterial strains distributed in 6 genera, including 5 Pseudomonas strains, were isolated from mycorrhizal samples of Polyporus umbellatus that rely on other fungi during their life cycles. Further screening and pot experiments showed that the Pseudomonas strain ZL8 not only inhibited the growth of phytopathogenic fungi, but also promoted the growth of Salvia miltiorrhiza through inhibiting its wilting. In addition, strain ZL8 was found to have the ability to dissolve phosphate, produce IAA and siderophore. Nineteen compounds were identified from the fermentation broth of strain ZL8, of which 2,4-diacetylphloroglucinol (DAPG) had a significant inhibitory effect on phytopathogenic fungi with a minimum inhibitory concentration of 3.12-25 μg/mL. Molecular docking predicted that DAPG could bind to myosin I at two unique sites, which may be responsible to the inhibition of fungal growth. The evaluation results showed that strain ZL8 can be used to develop a dual-purpose biocontrol agents and biofertilizer. These results also provide new insights into the discovery and utilization of new resources for biocontrol agents and biolfertilizers.
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Affiliation(s)
- Pengjie Han
- School of Pharmaceutical Sciences, Peking University, Beijing, China
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tianrui Liu
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuan Zheng
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ruiqi Song
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Tiegui Nan
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaolong Yang
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan, China
| | - Luqi Huang
- School of Pharmaceutical Sciences, Peking University, Beijing, China
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yuan Yuan
- State Key Laboratory of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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Gu Q, Qiao J, Wang R, Lu J, Wang Z, Li P, Zhang L, Ali Q, Khan AR, Gao X, Wu H. The Role of Pyoluteorin from Pseudomonas protegens Pf-5 in Suppressing the Growth and Pathogenicity of Pantoea ananatis on Maize. Int J Mol Sci 2022; 23:ijms23126431. [PMID: 35742879 PMCID: PMC9223503 DOI: 10.3390/ijms23126431] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/30/2022] [Accepted: 06/03/2022] [Indexed: 01/24/2023] Open
Abstract
The rhizospheric bacterium Pseudomonas protegens Pf-5 can colonize the seed and root surfaces of plants, and can protect them from pathogen infection. Secondary metabolites, including lipopeptides and polyketides produced by Pf-5, are involved in its biocontrol activity. We isolated a crude extract from Pf-5. It exhibited significant surface activity and strong antibacterial activity against Pantoea ananatis DZ-12, which causes maize brown rot on leaves. HPLC analysis combined with activity tests showed that the polyketide pyoluteorin in the crude extract participated in the suppression of DZ-12 growth, and that the lipopeptide orfamide A was the major biosurfactant in the crude extract. Further studies indicated that the pyoluteorin in the crude extract significantly suppressed the biofilm formation of DZ-12, and it induced the accumulation of reactive oxygen species in DZ-12 cells. Scanning electron microscopy and transmission electron microscopy observation revealed that the crude extract severely damaged the pathogen cells and caused cytoplasmic extravasations and hollowing of the cells. The pathogenicity of DZ-12 on maize leaves was significantly reduced by the crude extract from Pf-5 in a dose-dependent manner. The polyketide pyoluteorin had strong antibacterial activity against DZ-12, and it has the potential for development as an antimicrobial agent.
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Affiliation(s)
- Qin Gu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Junqing Qiao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
| | - Ruoyi Wang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Juan Lu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Zhengqi Wang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Pingping Li
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Lulu Zhang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Qurban Ali
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Abdur Rashid Khan
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Xuewen Gao
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
| | - Huijun Wu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (Q.G.); (R.W.); (J.L.); (Z.W.); (P.L.); (L.Z.); (Q.A.); (A.R.K.); (X.G.)
- Correspondence: ; Tel./Fax: +86-25-84395268
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Rizvi A, Ahmed B, Khan MS, El-Beltagi HS, Umar S, Lee J. Bioprospecting Plant Growth Promoting Rhizobacteria for Enhancing the Biological Properties and Phytochemical Composition of Medicinally Important Crops. Molecules 2022; 27:molecules27041407. [PMID: 35209196 PMCID: PMC8880754 DOI: 10.3390/molecules27041407] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/03/2022] [Accepted: 02/15/2022] [Indexed: 12/04/2022] Open
Abstract
Traditionally, medicinal plants have long been used as a natural therapy. Plant-derived extracts or phytochemicals have been exploited as food additives and for curing many health-related ailments. The secondary metabolites produced by many plants have become an integral part of human health and have strengthened the value of plant extracts as herbal medicines. To fulfil the demand of health care systems, food and pharmaceutical industries, interest in the cultivation of precious medicinal plants to harvest bio-active compounds has increased considerably worldwide. To achieve maximum biomass and yield, growers generally apply chemical fertilizers which have detrimental impacts on the growth, development and phytoconstituents of such therapeutically important plants. Application of beneficial rhizosphere microbiota is an alternative strategy to enhance the production of valuable medicinal plants under both conventional and stressed conditions due to its low cost, environmentally friendly behaviour and non-destructive impact on fertility of soil, plants and human health. The microbiological approach improves plant growth by various direct and indirect mechanisms involving the abatement of various abiotic stresses. Given the negative impacts of fertilizers and multiple benefits of microbiological resources, the role of plant growth promoting rhizobacteria (PGPR) in the production of biomass and their impact on the quality of bio-active compounds (phytochemicals) and mitigation of abiotic stress to herbal plants have been described in this review. The PGPR based enhancement in the herbal products has potential for use as a low cost phytomedicine which can be used to improve health care systems.
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Affiliation(s)
- Asfa Rizvi
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India; (A.R.); (S.U.)
| | - Bilal Ahmed
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Korea;
- Correspondence: (B.A.); (H.S.E.-B.)
| | - Mohammad Saghir Khan
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, India;
| | - Hossam S. El-Beltagi
- Agricultural Biotechnology Department, College of Agriculture and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia
- Biochemistry Department, Faculty of Agriculture, Cairo University, Gamma St., Cairo 12613, Egypt
- Correspondence: (B.A.); (H.S.E.-B.)
| | - Shahid Umar
- Department of Botany, School of Chemical and Life Sciences, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India; (A.R.); (S.U.)
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Korea;
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Kumar S, Diksha, Sindhu SS, Kumar R. Biofertilizers: An ecofriendly technology for nutrient recycling and environmental sustainability. CURRENT RESEARCH IN MICROBIAL SCIENCES 2022; 3:100094. [PMID: 35024641 PMCID: PMC8724949 DOI: 10.1016/j.crmicr.2021.100094] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 12/09/2021] [Accepted: 12/09/2021] [Indexed: 01/02/2023] Open
Abstract
Agriculture plays an important role in a country's economy. In modern intensive agricultural practices, chemical fertilizers and pesticides are applied on large scale to increase crop production in order to meet the nutritional requirements of the ever-increasing world population. However, rapid urbanization with shrinking agricultural lands, dramatic change in climatic conditions and extensive use of agrochemicals in agricultural practices has been found to cause environmental disturbances and public health hazards affecting food security and sustainability in agriculture. Besides this, agriculture soils are continuously losing their quality and physical properties as well as their chemical (imbalance of nutrients) and biological health due to indiscriminate use of agrochemicals. Plant-associated microbes with their plant growth- promoting traits have enormous potential to solve these challenges and play a crucial role in enhancing plant biomass and crop yield under greenhouse and field conditions. The beneficial mechanisms of plant growth improvement include enhanced availability of nutrients (i.e., N, P, K, Zn and S), phytohormone modulation, biocontrol of phytopathogens and amelioration of biotic and abiotic stresses. This plant-microbe interplay is indispensable for sustainable agriculture and these microbes may perform essential role as an ecological engineer to reduce the use of chemical fertilizers. Various steps involved for production of solid-based or liquid biofertilizer formulation include inoculum preparation, addition of cell protectants such as glycerol, lactose, starch, a good carrier material, proper packaging and best delivery methods. In addition, recent developments of formulation include entrapment/microencapsulation, nano-immobilization of microbial bioinoculants and biofilm-based biofertilizers. Thus, inoculation with beneficial microbes has emerged as an innovative eco-friendly technology to feed global population with available resources. This review critically examines the current state-of-art on use of microbial strains as biofertilizers in different crop systems for sustainable agriculture and in maintaining soil fertility and enhancing crop productivity. It is believed that acquisition of advanced knowledge of plant-PGPR interactions, bioengineering of microbial communities to improve the performance of biofertilizers under field conditions, will help in devising strategies for sustainable, environment-friendly and climate smart agricultural technologies to deliver short and long terms solutions for improving crop productivity to feed the world in a more sustainable manner.
Modern intensive agricultural practices face numerous challenges that pose major threats to global food security. In order to address the nutritional requirements of the ever-increasing world population, chemical fertilizers and pesticides are applied on large scale to increase crop production. However, the injudicious use of agrochemicals has resulted in environmental pollution leading to public health hazards. Moreover, agriculture soils are continuously losing their quality and physical properties as well as their chemical (imbalance of nutrients) and biological health. Plant-associated microbes with their plant growth- promoting traits have enormous potential to solve these challenges and play a crucial role in enhancing plant biomass and crop yield. The beneficial mechanisms of plant growth improvement include enhanced nutrient availability, phytohormone modulation, biocontrol of phytopathogens and amelioration of biotic and abiotic stresses. Solid-based or liquid bioinoculant formulation comprises inoculum preparation, addition of cell protectants such as glycerol, lactose, starch, a good carrier material, proper packaging and best delivery methods. Recent developments of formulation include entrapment/microencapsulation, nano-immobilization of microbial bioinoculants and biofilm-based biofertilizers. This review critically examines the current state-of-art on use of microbial strains as biofertilizers and the important roles performed by these beneficial microbes in maintaining soil fertility and enhancing crop productivity.
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Key Words
- ABA, Abscisic acid
- ACC, 1-aminocyclopropane-1-carboxylic acid
- AM, Arbuscular mycorrhiza
- APX, Ascorbate peroxidase
- BGA, Blue green algae
- BNF, Biological nitrogen fixation
- Beneficial microorganisms
- Biofertilizers
- CAT, Catalase
- Crop production
- DAPG, 2, 4-diacetyl phloroglucinol
- DRB, Deleterious rhizospheric bacteria
- GA, Gibberellic acid
- GPX, Glutathione/thioredoxin peroxidase
- HCN, Hydrogen cyanide
- IAA, Indole acetic acid
- IAR, Intrinsic antibiotic resistance
- ISR, Induced systemic resistance
- KMB, Potassium mobilizing bacteria
- KSMs, Potassium-solubilizing microbes
- MAMPs, Microbes associated molecular patterns
- PAMPs, Pathogen associated molecular patterns
- PCA, Phenazine-1-carboxylic acid
- PGP, Plant growth-promoting
- PGPR, Plant growth-promoting rhizobacteria
- POD, Peroxidase
- PSB, Phosphate-solubilizing bacteria
- Rhizosphere
- SAR, Systemic acquired resistance
- SOB, Sulphur oxidizing bacteria
- Soil fertility
- Sustainable agriculture
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Affiliation(s)
- Satish Kumar
- Department of Microbiology, CCS Haryana Agricultural University, Hisar 125004, India
| | - Diksha
- Department of Microbiology, CCS Haryana Agricultural University, Hisar 125004, India
| | - Satyavir S Sindhu
- Department of Microbiology, CCS Haryana Agricultural University, Hisar 125004, India
| | - Rakesh Kumar
- Department of Microbiology, CCS Haryana Agricultural University, Hisar 125004, India
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Prabhukarthikeyan SR, Parameswaran C, Keerthana U, Teli B, Jag PTK, Cayalvizhi B, Panneerselvam P, Senapati A, Nagendran K, Kumari S, Yadav MK, Aravindan S, Sanghamitra S. Understanding the Plant-microbe Interactions in CRISPR/CAS9 Era: Indeed a Sprinting Start in Marathon. Curr Genomics 2020; 21:429-443. [PMID: 33093805 PMCID: PMC7536795 DOI: 10.2174/1389202921999200716110853] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 05/21/2020] [Accepted: 06/03/2020] [Indexed: 12/15/2022] Open
Abstract
Plant-microbe interactions can be either beneficial or harmful depending on the nature of the interaction. Multifaceted benefits of plant-associated microbes in crops are well documented. Specifically, the management of plant diseases using beneficial microbes is considered to be eco-friendly and the best alternative for sustainable agriculture. Diseases caused by various phytopathogens are responsible for a significant reduction in crop yield and cause substantial economic losses globally. In an ecosystem, there is always an equally daunting challenge for the establishment of disease and development of resistance by pathogens and plants, respectively. In particular, comprehending the complete view of the complex biological systems of plant-pathogen interactions, co-evolution and plant growth promotions (PGP) at both genetic and molecular levels requires novel approaches to decipher the function of genes involved in their interaction. The Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)/Cas9 (CRISPR-associated protein 9) is a fast, emerging, precise, eco-friendly and efficient tool to address the challenges in agriculture and decipher plant-microbe interaction in crops. Nowadays, the CRISPR/CAS9 approach is receiving major attention in the field of functional genomics and crop improvement. Consequently, the present review updates the prevailing knowledge in the deployment of CRISPR/CAS9 techniques to understand plant-microbe interactions, genes edited for the development of fungal, bacterial and viral disease resistance, to elucidate the nodulation processes, plant growth promotion, and future implications in agriculture. Further, CRISPR/CAS9 would be a new tool for the management of plant diseases and increasing productivity for climate resilience farming.
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Affiliation(s)
| | | | - Umapathy Keerthana
- Crop Improvement Division, National Rice Research Institute (ICAR-NRRI), Cuttack, 753006 Odisha, India
| | - Basavaraj Teli
- Banaras Hindu University (BHU), Varanasi, Uttar Pradesh, India
| | | | | | - Periyasamy Panneerselvam
- Crop Improvement Division, National Rice Research Institute (ICAR-NRRI), Cuttack, 753006 Odisha, India
| | - Ansuman Senapati
- Crop Improvement Division, National Rice Research Institute (ICAR-NRRI), Cuttack, 753006 Odisha, India
| | - Krishnan Nagendran
- Indian Institute of Vegetable Research (ICAR-IIVR), Varanasi, Uttar Pradesh, India
| | - Shweta Kumari
- Indian Institute of Vegetable Research (ICAR-IIVR), Varanasi, Uttar Pradesh, India
| | - Manoj Kumar Yadav
- Crop Improvement Division, National Rice Research Institute (ICAR-NRRI), Cuttack, 753006 Odisha, India
| | - Sundaram Aravindan
- Crop Improvement Division, National Rice Research Institute (ICAR-NRRI), Cuttack, 753006 Odisha, India
| | - Samantaray Sanghamitra
- Crop Improvement Division, National Rice Research Institute (ICAR-NRRI), Cuttack, 753006 Odisha, India
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Elicitor and Receptor Molecules: Orchestrators of Plant Defense and Immunity. Int J Mol Sci 2020; 21:ijms21030963. [PMID: 32024003 PMCID: PMC7037962 DOI: 10.3390/ijms21030963] [Citation(s) in RCA: 141] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/11/2020] [Accepted: 01/13/2020] [Indexed: 02/07/2023] Open
Abstract
Pathogen-associated molecular patterns (PAMPs), microbe-associated molecular patterns (MAMPs), herbivore-associated molecular patterns (HAMPs), and damage-associated molecular patterns (DAMPs) are molecules produced by microorganisms and insects in the event of infection, microbial priming, and insect predation. These molecules are then recognized by receptor molecules on or within the plant, which activates the defense signaling pathways, resulting in plant’s ability to overcome pathogenic invasion, induce systemic resistance, and protect against insect predation and damage. These small molecular motifs are conserved in all organisms. Fungi, bacteria, and insects have their own specific molecular patterns that induce defenses in plants. Most of the molecular patterns are either present as part of the pathogen’s structure or exudates (in bacteria and fungi), or insect saliva and honeydew. Since biotic stresses such as pathogens and insects can impair crop yield and production, understanding the interaction between these organisms and the host via the elicitor–receptor interaction is essential to equip us with the knowledge necessary to design durable resistance in plants. In addition, it is also important to look into the role played by beneficial microbes and synthetic elicitors in activating plants’ defense and protection against disease and predation. This review addresses receptors, elicitors, and the receptor–elicitor interactions where these components in fungi, bacteria, and insects will be elaborated, giving special emphasis to the molecules, responses, and mechanisms at play, variations between organisms where applicable, and applications and prospects.
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Ibrahim HMM, Ahmad EM, Martínez-Medina A, Aly MAM. Effective approaches to study the plant-root knot nematode interaction. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 141:332-342. [PMID: 31207494 DOI: 10.1016/j.plaphy.2019.06.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 05/26/2019] [Accepted: 06/08/2019] [Indexed: 05/24/2023]
Abstract
Plant-parasitic nematodes cause major agricultural losses worldwide. Examining the molecular mechanisms underlying plant-nematode interactions and how plants respond to different invading pathogens is attracting major attention to reduce the expanding gap between agricultural production and the needs of the growing world population. This review summarizes the most recent developments in plant-nematode interactions and the diverse approaches used to improve plant resistance against root knot nematode (RKN). We will emphasize the recent rapid advances in genome sequencing technologies, small interfering RNA techniques (RNAi) and targeted genome editing which are contributing to the significant progress in understanding the plant-nematode interaction mechanisms. Also, molecular approaches to improve plant resistance against nematodes are considered.
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Affiliation(s)
- Heba M M Ibrahim
- Department of Genetics, Faculty of Agriculture, Cairo University, Giza, Egypt.
| | - Esraa M Ahmad
- Department of Genetics, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - Ainhoa Martínez-Medina
- Molecular Interaction Ecology, German Centre for Integrative Biodiversity Research, Leipzig, Germany
| | - Mohammed A M Aly
- Department of Genetics, Faculty of Agriculture, Cairo University, Giza, Egypt
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Mohanram S, Kumar P. Rhizosphere microbiome: revisiting the synergy of plant-microbe interactions. ANN MICROBIOL 2019. [DOI: 10.1007/s13213-019-01448-9] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Kenawy A, Dailin DJ, Abo-Zaid GA, Malek RA, Ambehabati KK, Zakaria KHN, Sayyed RZ, El Enshasy HA. Biosynthesis of Antibiotics by PGPR and Their Roles in Biocontrol of Plant Diseases. PLANT GROWTH PROMOTING RHIZOBACTERIA FOR SUSTAINABLE STRESS MANAGEMENT 2019:1-35. [DOI: 10.1007/978-981-13-6986-5_1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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19
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Prabhukarthikeyan S, Keerthana U, Raguchander T. Antibiotic-producing Pseudomonas fluorescens mediates rhizome rot disease resistance and promotes plant growth in turmeric plants. Microbiol Res 2018; 210:65-73. [DOI: 10.1016/j.micres.2018.03.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 03/10/2018] [Accepted: 03/23/2018] [Indexed: 10/17/2022]
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20
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Martin FN. Development of alternative strategies for management of soilborne pathogens currently controlled with methyl bromide. ANNUAL REVIEW OF PHYTOPATHOLOGY 2003; 107:256-263. [PMID: 14527332 DOI: 10.1094/phyto-09-16-0330-rvw] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The current standard treatment for management of soilborne pests in some high-value crop production systems is preplant fumigation with mixtures of methyl bromide and chloropicrin. With the impending phase-out of methyl bromide, the agricultural industries that rely on soil fumigation face the need for development of alternative pest management strategies. To maintain farm productivity, immediate term research has focused on evaluation of alternative fumigants, modification of current crop production practices to accommodate their use, and improvement of application technologies to reduce the environmental effects of fumigant applications. Longer-term research goals have focused on developing a more integrated approach for pest management that incorporates the use of cultural practices to reduce pathogen pressure, host resistance to disease, and biological approaches for stimulating plant growth and control of root diseases.
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Affiliation(s)
- Frank N Martin
- USDA-ARS, 1636 East Alisal Street, Salinas, California 93905, USA.
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