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Lelis TDP, Bruno J, Padilla J, Barphagha I, Ontoy J, Ham JH. qsmR encoding an IclR-family transcriptional factor is a core pathogenic determinant of Burkholderia glumae beyond the acyl-homoserine lactone-mediated quorum-sensing system. PLoS Pathog 2024; 20:e1011862. [PMID: 39361719 PMCID: PMC11478832 DOI: 10.1371/journal.ppat.1011862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 10/15/2024] [Accepted: 09/20/2024] [Indexed: 10/05/2024] Open
Abstract
The plant pathogenic bacterium Burkholderia glumae causes bacterial panicle blight (BPB) in rice-growing areas worldwide. It has been widely accepted that an acyl-homoserine lactone (AHL)-type quorum sensing (QS) system encoded by tofI and tofR genes (TofIR QS) is a key regulatory mechanism underlying the bacterial pathogenesis of B. glumae. In addition, qsmR, which encodes an IclR-family regulatory protein, has been considered an important part of TofIR QS. However, the present study with three strains of B. glumae representing different pathogenic strains revealed that this currently accepted paradigm should be modified. We characterized the regulatory function of TofIR QS and qsmR in three different strains of B. glumae, 336gr-1 (virulent), 411gr-6 (hypervirulent) and 257sh-1 (avirulent). In 336gr-1, both TofIR QS and qsmR were critical for the pathogenesis, being consistent with previous studies. However, in the hypervirulent strain 411gr-6, TofIR QS only partially contributes to the virulence, whereas qsmR was critical for pathogenesis like in 336gr-1. Furthermore, we found that a single nucleotide polymorphism causing T50K substitution in the qsmR coding sequence was the cause of the non-pathogenic trait of the naturally avirulent strain 257sh-1. Subsequent analyses of gene expression and transcriptome revealed that TofIR QS is partially controlled by qsmR at the transcriptional level in both virulent strains. Further genetic tests of additional B. glumae strains showed that 11 out of 20 virulent strains retained the ability to produce toxoflavin even after removing the tofI/tofM/tofR QS gene cluster like 411gr-6. In contrast, all the virulent strains tested lost the ability to produce toxoflavin almost completely upon deletion of the qsmR gene. Taking these results together, qsmR, rather than TofIR QS, is a master regulator that determines the pathogenic trait of B. glumae thus a more appropriate pathogen target for successful management of BPB.
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Affiliation(s)
- Tiago De Paula Lelis
- Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, United States of America
| | - Jobelle Bruno
- Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, United States of America
| | - Jonas Padilla
- Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, United States of America
| | - Inderjit Barphagha
- Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, United States of America
| | - John Ontoy
- Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, United States of America
| | - Jong Hyun Ham
- Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, United States of America
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Kouzai Y, Sagehashi Y, Watanabe R, Kajiwara H, Suzuki N, Ono H, Naito K, Akimoto-Tomiyama C. BglaTNB6, a tailocin produced by a plant-associated nonpathogenic bacterium, prevents rice seed-borne bacterial diseases. PLoS Pathog 2024; 20:e1012645. [PMID: 39423232 PMCID: PMC11524443 DOI: 10.1371/journal.ppat.1012645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 10/30/2024] [Accepted: 10/04/2024] [Indexed: 10/21/2024] Open
Abstract
Rice seed-borne diseases caused by the bacterial pathogens Burkholderia glumae and B. plantarii pose a major threat to rice production worldwide. To manage these diseases in a sustainable manner, a biocontrol strategy is crucial. In this study, we showed that B. gladioli NB6 (NB6), a nonpathogenic bacterium, strongly protects rice from infection caused by the above-mentioned pathogens. NB6 was isolated from the indica rice cultivar Nona Bokra seedlings, which possesses genetic resistance to B. glumae. We discovered that cell suspensions of NB6 and its culture filtrate suppressed the disease symptoms caused by B. glumae and B. plantarii in rice seedlings, which indicated that NB6 secretes a plant-protective substance extracellularly. Through purification and mass spectrometry analysis of the culture filtrate, combined with transmission electron microscopy and mutant analysis, the substance was identified as a tailocin and named BglaTNB6. Tailocins are bacteriotoxic multiprotein structures morphologically similar to headless phage tails. BglaTNB6 exhibited antibacterial activity against several Burkholderia species, including B. glumae, B. plantarii, and B. gladioli, suggesting it can prevent pathogen infection. Interestingly, BglaTNB6 greatly contributed only to the biocontrol activity of NB6 cell suspensions against B. plantarii, and not against B. glumae. BglaTNB6 was shown to be encoded by a prophage locus lacking genes for phage head proteins, and a B. gladioli strain with the coded BglaTNB6-like locus equipped with phage head proteins failed to prevent rice seedlings from being infected with B. plantarii. These results suggested that BglaTNB6 may enhance the competitiveness of NB6 against a specific range of bacteria. Our study also highlights the potential of tailocin-producing endophytes for managing crop bacterial diseases.
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Affiliation(s)
- Yusuke Kouzai
- Crop Stress Management Group, Division of Plant Molecular Regulation Research, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
| | - Yoshiyuki Sagehashi
- Crop Stress Management Group, Division of Plant Molecular Regulation Research, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
| | - Riku Watanabe
- Crop Stress Management Group, Division of Plant Molecular Regulation Research, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
| | - Hideyuki Kajiwara
- Biomacromolecules Research Unit, Research Center for Advanced Analysis, NARO, Tsukuba, Ibaraki, Japan
| | - Nobuhiro Suzuki
- Biomacromolecules Research Unit, Research Center for Advanced Analysis, NARO, Tsukuba, Ibaraki, Japan
| | - Hiroshi Ono
- Bioactive Chemical Analysis Unit, Research Center for Advanced Analysis, NARO, Tsukuba, Ibaraki, Japan
| | - Ken Naito
- Plant Resources Unit, Research Center of Genetic Resources, NARO, Tsukuba, Ibaraki, Japan
| | - Chiharu Akimoto-Tomiyama
- Crop Stress Management Group, Division of Plant Molecular Regulation Research, Institute of Agrobiological Sciences, NARO, Tsukuba, Ibaraki, Japan
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Valdez-Nuñez RA, Ramos-Luna LC, Meza-Catalán PP, Asencios-Sifuentes NR, Ocaña-Rodriguez AW, Chávez-Galarza JC, Sandoval-Vergara AN, Béna G. Genetic Diversity and Virulence of Phytopathogenic Burkholderia glumae Strains Isolated from Rice Cultivars in Valleys of the High Jungle of Perú. PLANT DISEASE 2024; 108:2376-2388. [PMID: 38386299 DOI: 10.1094/pdis-09-23-1823-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Burkholderia glumae causes bacterial leaf blight in rice, and its global spread has been exacerbated by climate change. To understand the genetic diversity and virulence of B. glumae strains isolated from rice cultivars in Perú, 47 isolates were obtained from infected rice fields, all belonging to B. glumae, and confirmed by recA and toxB sequences. The BOX-PCR typing group has 38 genomic profiles, and these turn into seven variable number tandem repeats (VNTR) haplotypes. There was no correlation between clustering and geographical origin. Nineteen strains were selected for phenotypic characterization and virulence, using both the maceration level of the onion bulb proxy and inoculation of seeds of two rice cultivars. Several strains produced pigments other than toxoflavin, which correlated with onion bulb maceration. In terms of virulence at the seed level, all strains produced inhibition at the root and coleoptile level, but the severity of symptoms varied significantly between strains, revealing significant differences in pathogenicity. There is no correlation between maceration and virulence scores, probably reflecting different virulence mechanisms depending on the host infection stage. This is the first study to evaluate the VNTR diversity and virulence of Peruvian strains of B. glumae in two commercial cultivars.
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Affiliation(s)
- Renzo A Valdez-Nuñez
- Departamento Académico de Ciencias Básicas, Facultad de Ingeniería, Universidad Nacional de Barranca, Barranca 15169, Lima, Perú
- Biotechnology Research Laboratory, Universidad Nacional de Barranca, Barranca 15169, Lima, Perú
| | - Lucero C Ramos-Luna
- Biotechnology Research Laboratory, Universidad Nacional de Barranca, Barranca 15169, Lima, Perú
| | - Patricia P Meza-Catalán
- Biotechnology Research Laboratory, Universidad Nacional de Barranca, Barranca 15169, Lima, Perú
| | | | - Angel W Ocaña-Rodriguez
- Departamento Académico de Ciencias Básicas, Facultad de Ingeniería, Universidad Nacional de Barranca, Barranca 15169, Lima, Perú
| | - Julio C Chávez-Galarza
- Departamento Académico de Ciencias Básicas, Facultad de Ingeniería, Universidad Nacional de Barranca, Barranca 15169, Lima, Perú
| | - Ana N Sandoval-Vergara
- Departamento Académico Agrosilvopastoril, Universidad Nacional de San Martín, Tarapoto, Perú
| | - Gilles Béna
- IRD, CIRAD, INRAe, Institut Agro, PHIM (Plant Health Institute of Montpellier), University of Montpellier, Montpellier, France
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Hamidizade M, Taghavi SM, Soleimani A, Bouazar M, Abachi H, Portier P, Osdaghi E. Wild mushrooms as potential reservoirs of plant pathogenic bacteria: a case study on Burkholderia gladioli. Microbiol Spectr 2024; 12:e0339523. [PMID: 38380912 PMCID: PMC10986547 DOI: 10.1128/spectrum.03395-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/18/2024] [Indexed: 02/22/2024] Open
Abstract
Fruit bodies (sporocarps) of wild mushrooms growing in natural environments play a substantial role in the preservation of microbial communities, for example, clinical and food-poisoning bacteria. However, the role of wild mushrooms as natural reservoirs of plant pathogenic bacteria remains almost entirely unknown. Furthermore, bacterial transmission from a mushroom species to agricultural plants has rarely been recorded in the literature. In September 2021, a creamy-white Gram-negative bacterial strain was isolated from the sporocarp of Suillus luteus (slippery jack) growing in Bermuda grass (Cynodon dactylon) lawn in Southern Iran. A similar strain was isolated from the same fungus in the same area in September 2022. Both strains were identified as Burkholderia gladioli based on phenotypic features as well as phylogeny of 16S rRNA and three housekeeping genes. The strains were not only pathogenic on white button mushrooms (Agaricus bisporus) but also induced hypersensitive reaction (HR) on tobacco and common bean leaves and caused soft rot on a set of diverse plant species, that is, chili pepper, common bean pod, cucumber, eggplant, garlic, gladiolus, narcissus, onion, potato, spring onion, okra, kohlrabi, mango, and watermelon. Isolation of plant pathogenic B. gladioli strains from sporocarp of S. luteus in two consecutive years in the same area could be indicative of the role of this fungus in the preservation of the bacterium in the natural environment. B. gladioli associated with naturally growing S. luteus could potentially invade neighboring agricultural crops, for example, vegetables and ornamentals. The potential role of wild mushrooms as natural reservoirs of phytopathogenic bacteria is further discussed.IMPORTANCEThe bacterial genus Burkholderia contains biologically heterogeneous strains that can be isolated from diverse habitats, that is, soil, water, diseased plant material, and clinical specimens. In this study, two Gram-negative pectinolytic bacterial strains were isolated from the sporocarps of Suillus luteus in September 2021 and 2022. Molecular phylogenetic analyses revealed that both strains belonged to the complex species Burkholderia gladioli, while the pathovar status of the strains remained undetermined. Biological investigations accomplished with pathogenicity and host range assays showed that B. gladioli strains isolated from S. luteus in two consecutive years were pathogenic on a set of diverse plant species ranging from ornamentals to both monocotyledonous and dicotyledonous vegetables. Thus, B. gladioli could be considered an infectious pathogen capable of being transmitted from wild mushrooms to annual crops. Our results raise a hypothesis that wild mushrooms could be considered as potential reservoirs for phytopathogenic B. gladioli.
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Affiliation(s)
- Mozhde Hamidizade
- Department of Plant Protection, School of Agriculture, Shiraz University, Shiraz, Iran
- Department of Plant Protection, College of Agriculture, University of Tehran, Karaj, Iran
| | - S. Mohsen Taghavi
- Department of Plant Protection, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Ardavan Soleimani
- Department of Plant Protection, College of Agriculture, University of Tehran, Karaj, Iran
| | - Mohammad Bouazar
- Department of Plant Protection, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Hamid Abachi
- Department of Plant Protection, College of Agriculture, University of Tehran, Karaj, Iran
| | - Perrine Portier
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, CIRM-CFBP, Angers, France
| | - Ebrahim Osdaghi
- Department of Plant Protection, College of Agriculture, University of Tehran, Karaj, Iran
- Center for International Scientific Studies and Collaborations (CISSC) of Iran, Tehran, Iran
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Tiran Gunasena M, Hussein MZ, Ali A, Wahab MAA, Bashir Kutawa A, Rafif A, Afif Mohd Zobir S, Ahmad K. Zingiber officinale Roscoe Essential Oils-Loaded Chitosan Nanoparticles with Enhanced Bactericidal Efficacy against Burkholderia glumae in Rice. Chem Biodivers 2023; 20:e202300686. [PMID: 37905394 DOI: 10.1002/cbdv.202300686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 10/28/2023] [Accepted: 10/29/2023] [Indexed: 11/02/2023]
Abstract
Ginger essential oils (GEO) shows exceptional antimicrobial properties against plant pathogens. Due to its high volatility and low stability, it requires encapsulation to retain its effective properties. The GEO-Chitosan (GEO-CS) nanobactericide was developed using the ionic gelation method. The nanobactericides show particle diameters of 465, 28, 35, 48 and 500 nm when sodium tripolyphosphate (TPP) concentrations used in the preparation were 0.0, 0.5, 1.0, 2.0 and 4.0 %, respectively. The X-ray diffraction and the UV-vis studies revealed that the GEO was encapsulated into the chitosan nanoparticles with an encapsulation efficiency of around 46 % and a loading capacity of 27-34 %. The antibacterial activity of GEO-chitosan nanobactericide against Burkholderia glumae (Bg) was found to be 7.5-11.8 mm, with minimum inhibitory concentration and minimum bactericidal concentration values of 15.6 μl/mL and 31.25 μl/mL, respectively. Hence, these findings indicate that the prepared GEO-CS nanobactericides were found to be effective against Bg. This preliminary study is toward the development of new agronanobactericides using a natural product to control Bg.
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Affiliation(s)
- Mahesh Tiran Gunasena
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, 43400, Malaysia
- Grain Legume and Oil Crop Research and Development Centre, Angunakolapelessa, 82220, Sri Lanka
| | - Mohd Zobir Hussein
- Institute of Nanoscience and Nanotechnology, Universiti Putra Malaysia, Serdang, 43400, Malaysia
| | - Asgar Ali
- Centre of Excellence for Postharvest Biotechnology (CEPB), School of Biosciences, University of Nottingham Malaysia, Semenyih, 43500, Malaysia
| | - Mohd Aswad Abdul Wahab
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, 43400, Malaysia
| | - Abdulaziz Bashir Kutawa
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, 43400, Malaysia
- Department of Plant Science and Biotechnology, Faculty of Life Sciences, Federal University Dutsin-Ma, P.M.B 500, Dutsin-Ma, 821101, Nigeria
| | - Amara Rafif
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, 43400, Malaysia
| | - Syazwan Afif Mohd Zobir
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, 43400, Malaysia
| | - Khairulmazmi Ahmad
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, 43400, Malaysia
- Institute of Plantation Studies (IKP), Universiti Putra Malaysia, Serdang, 43400, Malaysia
- Institute of Tropical Agriculture and Food Security (ITAFoS), Universiti Putra Malaysia, Serdang, 43400, Malaysia
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Ngalimat MS, Mohd Hata E, Zulperi D, Ismail SI, Ismail MR, Mohd Zainudin NAI, Saidi NB, Yusof MT. A laudable strategy to manage bacterial panicle blight disease of rice using biocontrol agents. J Basic Microbiol 2023; 63:1180-1195. [PMID: 37348082 DOI: 10.1002/jobm.202300182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/25/2023] [Accepted: 06/02/2023] [Indexed: 06/24/2023]
Abstract
Bacterial panicle blight (BPB) disease is a dreadful disease in rice-producing countries. Burkholderia glumae, a Gram-negative, rod-shaped, and flagellated bacterium was identified as the primary culprit for BPB disease. In 2019, the disease was reported in 18 countries, and to date, it has been spotted in 26 countries. Rice yield has been reduced by up to 75% worldwide due to this disease. Interestingly, the biocontrol strategy offers a promising alternative to manage BPB disease. This review summarizes the management status of BPB disease using biological control agents (BCA). Bacteria from the genera Bacillus, Burkholderia, Enterobacter, Pantoea, Pseudomonas, and Streptomyces have been examined as BCA under in vitro, glasshouse, and field conditions. Besides bacteria, bacteriophages have also been reported to reduce BPB pathogens under in vitro and glasshouse conditions. Here, the overview of the mechanisms of bacteria and bacteriophages in controlling BPB pathogens is addressed. The applications of BCA using various delivery methods could effectively manage BPB disease to benefit the agroecosystems and food security.
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Affiliation(s)
- Mohamad S Ngalimat
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Erneeza Mohd Hata
- Sustainable Agronomy and Crop Protection, Institute of Plantation Studies, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Dzarifah Zulperi
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Siti I Ismail
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd R Ismail
- Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Nur A I Mohd Zainudin
- Department of Biology, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Noor B Saidi
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Mohd T Yusof
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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Iqbal A, Nwokocha G, Tiwari V, Barphagha IK, Grove A, Ham JH, Doerrler WT. A membrane protein of the rice pathogen Burkholderia glumae required for oxalic acid secretion and quorum sensing. MOLECULAR PLANT PATHOLOGY 2023; 24:1400-1413. [PMID: 37428013 PMCID: PMC10576180 DOI: 10.1111/mpp.13376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 06/26/2023] [Accepted: 06/26/2023] [Indexed: 07/11/2023]
Abstract
Bacterial panicle blight is caused by Burkholderia glumae and results in damage to rice crops worldwide. Virulence of B. glumae requires quorum sensing (QS)-dependent synthesis and export of toxoflavin, responsible for much of the damage to rice. The DedA family is a conserved membrane protein family found in all bacterial species. B. glumae possesses a member of the DedA family, named DbcA, which we previously showed is required for toxoflavin secretion and virulence in a rice model of infection. B. glumae secretes oxalic acid as a "common good" in a QS-dependent manner to combat toxic alkalinization of the growth medium during the stationary phase. Here, we show that B. glumae ΔdbcA fails to secrete oxalic acid, leading to alkaline toxicity and sensitivity to divalent cations, suggesting a role for DbcA in oxalic acid secretion. B. glumae ΔdbcA accumulated less acyl-homoserine lactone (AHL) QS signalling molecules as the bacteria entered the stationary phase, probably due to nonenzymatic inactivation of AHL at alkaline pH. Transcription of toxoflavin and oxalic acid operons was down-regulated in ΔdbcA. Alteration of the proton motive force with sodium bicarbonate also reduced oxalic acid secretion and expression of QS-dependent genes. Overall, the data show that DbcA is required for oxalic acid secretion in a proton motive force-dependent manner, which is critical for QS of B. glumae. Moreover, this study supports the idea that sodium bicarbonate may serve as a chemical for treatment of bacterial panicle blight.
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Affiliation(s)
- Asif Iqbal
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - George Nwokocha
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - Vijay Tiwari
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - Inderjit K. Barphagha
- Department of Plant Pathology and Crop PhysiologyLouisiana State University Agricultural CenterBaton RougeLouisianaUSA
| | - Anne Grove
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
| | - Jong Hyun Ham
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
- Department of Plant Pathology and Crop PhysiologyLouisiana State University Agricultural CenterBaton RougeLouisianaUSA
| | - William T. Doerrler
- Department of Biological SciencesLouisiana State UniversityBaton RougeLouisianaUSA
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Simon EV, Hechanova SL, Hernandez JE, Li CP, Tülek A, Ahn EK, Jairin J, Choi IR, Sundaram RM, Jena KK, Kim SR. Available cloned genes and markers for genetic improvement of biotic stress resistance in rice. FRONTIERS IN PLANT SCIENCE 2023; 14:1247014. [PMID: 37731986 PMCID: PMC10507716 DOI: 10.3389/fpls.2023.1247014] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/14/2023] [Indexed: 09/22/2023]
Abstract
Biotic stress is one of the major threats to stable rice production. Climate change affects the shifting of pest outbreaks in time and space. Genetic improvement of biotic stress resistance in rice is a cost-effective and environment-friendly way to control diseases and pests compared to other methods such as chemical spraying. Fast deployment of the available and suitable genes/alleles in local elite varieties through marker-assisted selection (MAS) is crucial for stable high-yield rice production. In this review, we focused on consolidating all the available cloned genes/alleles conferring resistance against rice pathogens (virus, bacteria, and fungus) and insect pests, the corresponding donor materials, and the DNA markers linked to the identified genes. To date, 48 genes (independent loci) have been cloned for only major biotic stresses: seven genes for brown planthopper (BPH), 23 for blast, 13 for bacterial blight, and five for viruses. Physical locations of the 48 genes were graphically mapped on the 12 rice chromosomes so that breeders can easily find the locations of the target genes and distances among all the biotic stress resistance genes and any other target trait genes. For efficient use of the cloned genes, we collected all the publically available DNA markers (~500 markers) linked to the identified genes. In case of no available cloned genes yet for the other biotic stresses, we provided brief information such as donor germplasm, quantitative trait loci (QTLs), and the related papers. All the information described in this review can contribute to the fast genetic improvement of biotic stress resistance in rice for stable high-yield rice production.
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Affiliation(s)
- Eliza Vie Simon
- Rice Breeding Innovation Department, International Rice Research Institute (IRRI), Laguna, Philippines
- Institute of Crop Science (ICropS), University of the Philippines Los Baños, Laguna, Philippines
| | - Sherry Lou Hechanova
- Rice Breeding Innovation Department, International Rice Research Institute (IRRI), Laguna, Philippines
| | - Jose E. Hernandez
- Institute of Crop Science (ICropS), University of the Philippines Los Baños, Laguna, Philippines
| | - Charng-Pei Li
- Taiwan Agricultural Research Institute (TARI), Council of Agriculture, Taiwan
| | - Adnan Tülek
- Trakya Agricultural Research Institute, Edirne, Türkiye
| | - Eok-Keun Ahn
- National Institute of Crop Science, Rural Development Administration (RDA), Republic of Korea
| | - Jirapong Jairin
- Division of Rice Research and Development, Rice Department, Bangkok, Thailand
| | - Il-Ryong Choi
- Rice Breeding Innovation Department, International Rice Research Institute (IRRI), Laguna, Philippines
- National Institute of Crop Science, Rural Development Administration (RDA), Republic of Korea
| | - Raman M. Sundaram
- ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad, India
| | - Kshirod K. Jena
- School of Biotechnology, KIIT Deemed University, Bhubaneswar, Odisha, India
| | - Sung-Ryul Kim
- Rice Breeding Innovation Department, International Rice Research Institute (IRRI), Laguna, Philippines
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Kang JA, Dutta S, Lee YH. Biocontrol of bacterial seedling rot of rice plants using combination of Cytobacillus firmus JBRS159 and silicon. PLoS One 2023; 18:e0290049. [PMID: 37578972 PMCID: PMC10424872 DOI: 10.1371/journal.pone.0290049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 07/31/2023] [Indexed: 08/16/2023] Open
Abstract
Burkholderia glumae causes bacterial panicle blight (BPB) and bacterial seedling rot (BSR) which are difficult to control in rice plants. Seed disinfection using microbes and eco-friendly materials is an efficient alternative practice for managing BPB and BSR. In this study, we applied Cytobacillus firmus JBRS159 (JBRS159) in combination with silicon dioxide (SiO2) nanoparticle or potassium silicate (K2SiO3) solution to control BSR. JBRS159, SiO2 nanoparticle, and K2SiO3 independently suppressed the BSR disease and promoted growths of rice and Arabidopsis. Population of B. glumae in the treated rice seeds was suppressed by the application of JBRS159 via competitions for nutrients and niches. The mixture of JBRS159 and each Si compound (SiO2 nanoparticle or K2SiO3) was complementary for disease-suppressing and growth-promoting activities of individual treatment. The results of this study indicate that mixture of JBRS159 with each Si compound can be harnessed for disease control and growth promotion as efficient alternatives to chemical pesticides and synthetic fertilizers. The efficacy of JBRS159 and Si compounds in the control of BSR and BPB in the field remains to be evaluated.
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Affiliation(s)
- Jun An Kang
- Division of Biotechnology, Jeonbuk National University, Iksan-si, Jeollabuk-do, Republic of Korea
| | - Swarnalee Dutta
- Division of Biotechnology, Jeonbuk National University, Iksan-si, Jeollabuk-do, Republic of Korea
| | - Yong Hoon Lee
- Division of Biotechnology, Jeonbuk National University, Iksan-si, Jeollabuk-do, Republic of Korea
- Advanced Institute of Environment and Bioscience, Plant Medical Research Center, and Institute of Bio-industry, Jeonbuk National University, Jeonju-si, Jeollabuk-do, Republic of Korea
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Chung D, Nguyen HT, Yu NH, Yu WJ, Kwon YM, Bae SS, Choi G, Kim JC. In vitro and in vivo antimicrobial activity of the fungal metabolite toluquinol against phytopathogenic bacteria. Front Microbiol 2023; 14:1221865. [PMID: 37583517 PMCID: PMC10424571 DOI: 10.3389/fmicb.2023.1221865] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 07/07/2023] [Indexed: 08/17/2023] Open
Abstract
Introduction Bacterial plant diseases cause tremendous economic losses worldwide. However, a few effective and sustainable control methods are currently available. To discover novel and effective management approaches, we screened marine fungi for their antibacterial activity against phytopathogenic bacteria in vitro and in vivo. Methods We screened the culture broth of 55 fungal strains isolated from various marine sources (seawater, algae, and sediment) for their in vitro antibacterial activity using the broth microdilution method. Then, only the fungal strain (designated UL-Ce9) with higher antibacterial activity in vitro was tested in an in vivo experiment against tomato bacterial wilt. The active compounds of UL-Ce9 were extracted using ethyl acetate, purified by a series of chromatography, and the structure was elucidated by nuclear magnetic resonance spectroscopy. Pesticide formulations of toluquinol were prepared as soluble concentrates and wettable powder. The disease control efficacy of toluquinol formulations was evaluated against blight of rice and the bacterial wilt of tomato. Results and discussion The culture broth of UL-Ce9 showed high antibacterial activity against Agrobacterium tumefaciens, Ralstonia solanacearum, and Xanthomonas arboricola pv. pruni in vitro, and we selected UL-Ce9 for the in vivo test. The UL-Ce9 culture broth completely suppressed the bacterial wilt of tomato at a dilution of 1:5. The phylogenetic analysis identified UL-Ce9 as Penicillium griseofulvum, and the antibacterial metabolites were revealed as patulin, gentisyl alcohol, and toluquinol, all of which were associated with the biosynthetic pathway of the mycotoxin patulin. Patulin exhibited the highest antibacterial activity against 16 phytopathogenic bacteria in vitro, followed by toluquinol and gentisyl alcohol. As patulin is toxic, we selected toluquinol to investigate its potential use as a pesticide against bacterial plant diseases. Compared with the chemicals currently being applied in agriculture (streptomycin and oxytetracycline), toluquinol formulations exhibited similar and higher control efficacies against bacterial leaf blight of rice and bacterial wilt of tomato, respectively. To the best of our knowledge, this is the first report of the antibacterial activity of toluquinol against phytopathogenic bacteria. Our results suggest that toluquinol is a potential candidate for the development of novel and effective pesticides for the management of bacterial plant diseases.
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Affiliation(s)
- Dawoon Chung
- Department of Microbial Resources, National Marine Biodiversity Institute of Korea, Seocheon, Republic of Korea
| | - Hoa Thi Nguyen
- Plant Healthcare Research Institute, JAN153 Biotech Incorporated, Gwangju, Republic of Korea
- Center of Organic Biochemistry, Vietnam Institute of Industrial Chemistry, Ha Noi, Vietnam
| | - Nan Hee Yu
- Plant Healthcare Research Institute, JAN153 Biotech Incorporated, Gwangju, Republic of Korea
| | - Woon-Jong Yu
- Department of Microbial Resources, National Marine Biodiversity Institute of Korea, Seocheon, Republic of Korea
| | - Yong Min Kwon
- Department of Microbial Resources, National Marine Biodiversity Institute of Korea, Seocheon, Republic of Korea
| | - Seung Seob Bae
- Department of Microbial Resources, National Marine Biodiversity Institute of Korea, Seocheon, Republic of Korea
| | - Grace Choi
- Department of Microbial Resources, National Marine Biodiversity Institute of Korea, Seocheon, Republic of Korea
| | - Jin-Cheol Kim
- Plant Healthcare Research Institute, JAN153 Biotech Incorporated, Gwangju, Republic of Korea
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Ahmed T, Wu Z, Jiang H, Luo J, Noman M, Shahid M, Manzoor I, Allemailem KS, Alrumaihi F, Li B. Bioinspired Green Synthesis of Zinc Oxide Nanoparticles from a Native Bacillus cereus Strain RNT6: Characterization and Antibacterial Activity against Rice Panicle Blight Pathogens Burkholderia glumae and B. gladioli. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:884. [PMID: 33808470 PMCID: PMC8065826 DOI: 10.3390/nano11040884] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/21/2021] [Accepted: 03/24/2021] [Indexed: 11/29/2022]
Abstract
Burkholderia glumae and B. gladioli are seed-borne rice pathogens that cause bacterial panicle blight (BPB) disease, resulting in huge rice yield losses worldwide. However, the excessive use of chemical pesticides in agriculture has led to an increase in environmental toxicity. Microbe-mediated nanoparticles (NPs) have recently gained significant attention owing to their promising application in plant disease control. In the current study, we biologically synthesize zinc oxide nanoparticles (ZnONPs) from a native Bacillus cereus RNT6 strain, which was taxonomically identified using 16S rRNA gene analysis. The biosynthesis of ZnONPs in the reaction mixture was confirmed by using UV-Vis spectroscopy. Moreover, XRD, FTIR, SEM-EDS, and TEM analysis revealed the functional groups, crystalline nature, and spherical shape of ZnONPs with sizes ranging from 21 to 35 nm, respectively. Biogenic ZnONPs showed significant antibacterial activity at 50 µg mL-1 against B. glumae and B. gladioli with a 2.83 cm and 2.18 cm zone of inhibition, respectively, while cell numbers (measured by OD600) of the two pathogens in broth culture were reduced by 71.2% and 68.1%, respectively. The ultrastructure studies revealed the morphological damage in ZnONPs-treated B. glumae and B. gladioli cells as compared to the corresponding control. The results of this study revealed that ZnONPs could be considered as promising nanopesticides to control BPB disease in rice.
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Affiliation(s)
- Temoor Ahmed
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (T.A.); (Z.W.); (H.J.); (M.N.)
| | - Zhifeng Wu
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (T.A.); (Z.W.); (H.J.); (M.N.)
| | - Hubiao Jiang
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (T.A.); (Z.W.); (H.J.); (M.N.)
| | - Jinyan Luo
- Shanghai Extension and Service Center of Agriculture Technology, Department of Plant Quarantine, Shanghai 201103, China;
| | - Muhammad Noman
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (T.A.); (Z.W.); (H.J.); (M.N.)
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan; (M.S.); (I.M.)
| | - Irfan Manzoor
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan; (M.S.); (I.M.)
- Department of Biology, Indiana University, Bloomington, IN 47405, USA
| | - Khaled S. Allemailem
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 51452, Saudi Arabia; (K.S.A.); (F.A.)
| | - Faris Alrumaihi
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah 51452, Saudi Arabia; (K.S.A.); (F.A.)
| | - Bin Li
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; (T.A.); (Z.W.); (H.J.); (M.N.)
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