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Qi Z, Meng X, Xu M, Du Y, Yu J, Song T, Pan X, Zhang R, Cao H, Yu M, Telebanco-Yanoria MJ, Lu G, Zhou B, Liu Y. A novel Pik allele confers extended resistance to rice blast. PLANT, CELL & ENVIRONMENT 2024. [PMID: 39087779 DOI: 10.1111/pce.15072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 07/18/2024] [Accepted: 07/22/2024] [Indexed: 08/02/2024]
Abstract
In the ongoing arms race between rice and Magnaporthe oryzae, the pathogen employs effectors to evade the immune response, while the host develops resistance genes to recognise these effectors and confer resistance. In this study, we identified a novel Pik allele, Pik-W25, from wild rice WR25 through bulked-segregant analysis, creating the Pik-W25 NIL (Near-isogenic Lines) named G9. Pik-W25 conferred resistance to isolates expressing AvrPik-C/D/E alleles. CRISPR-Cas9 editing was used to generate transgenic lines with a loss of function in Pik-W25-1 and Pik-W25-2, resulting in loss of resistance in G9 to isolates expressing the three alleles, confirming that Pik-W25-induced immunity required both Pik-W25-1 and Pik-W25-2. Yeast two-hybrid (Y2H) and split luciferase complementation assays showed interactions between Pik-W25-1 and the three alleles, while Pik-W25-2 could not interact with AvrPik-C, -D, and -E alleles with Y2H assay, indicating Pik-W25-1 acts as an adaptor and Pik-W25-2 transduces the signal to trigger resistance. The Pik-W25 NIL exhibited enhanced field resistance to leaf and panicle blast without significant changes in morphology or development compared to the parent variety CO39, suggesting its potential for resistance breeding. These findings advance our knowledge of rice blast resistance mechanisms and offer valuable resources for effective and sustainable control strategies.
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Affiliation(s)
- Zhongqiang Qi
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
- IRRI-JAAS Joint Laboratory, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Xiuli Meng
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University (FAFU), Fuzhou, China
- Genetics and Biotechnology Division, International Rice Research Institute, College, Los Banos, Laguna, Philippines
- Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
| | - Ming Xu
- High-throughput Genotyping Shared Laboratory, Seed Administration Department of Jiangsu Province, Nanjing, China
| | - Yan Du
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Junjie Yu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Tianqiao Song
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Xiayan Pan
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Rongsheng Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Huijuan Cao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Mina Yu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | | | - Guodong Lu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University (FAFU), Fuzhou, China
| | - Bo Zhou
- IRRI-JAAS Joint Laboratory, Jiangsu Academy of Agricultural Science, Nanjing, China
- Genetics and Biotechnology Division, International Rice Research Institute, College, Los Banos, Laguna, Philippines
| | - Yongfeng Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
- IRRI-JAAS Joint Laboratory, Jiangsu Academy of Agricultural Science, Nanjing, China
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Qi Z, Ju F, Guo Y, Du Y, Yu J, Zhang R, Yu M, Cao H, Song T, Pan X, Dai T, Liu Y. A Rapid, Equipment-Free Method for Detecting Avirulence Genes of Pyricularia oryzae Using a Lateral Flow Strip-Based RPA Assay. PLANT DISEASE 2024; 108:2283-2290. [PMID: 38587798 DOI: 10.1094/pdis-10-23-2098-sr] [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: 04/09/2024]
Abstract
Rice blast, caused by Pyricularia oryzae, is one of the most destructive rice diseases worldwide. Using resistant rice varieties is the most cost-effective way to control rice blast. Consequently, it is critical to monitor the distribution frequency of avirulence (Avr) genes in rice planting fields to facilitate the breeding of resistant rice varieties. In this study, we established a rapid recombinase polymerase amplification-lateral flow dipstick (RPA-LFD) detection system for the identification of AvrPik, Avr-Piz-t, and Avr-Pi9. The optimized reaction temperature and duration were 37°C and 20 min, indicating that the reaction system could be initiated by body temperature without relying on any precision instruments. Specificity analysis showed that the primer and probe combinations targeting the three Avr genes exhibited a remarkable specificity at genus-level detection. Under the optimized condition, the lower detected thresholds of AvrPik, Avr-Piz-t, and Avr-Pi9 were 10 fg/μl, 100 fg/μl, and 10 pg/μl, respectively. Notably, the detection sensitivity of the three Avr genes was much higher than that of PCR. In addition, we also successfully detected the presence of AvrPik, Avr-Piz-t, and Avr-Pi9 in the leaf and panicle blast lesions with the RPA-LFD detection system. In particular, the genomic DNA was extracted using the simpler PEG-NaOH rapid extraction method. In summary, we developed an RPA detection system for AvrPik, Avr-Pi9, and Avr-Piz-t, combined with the PEG-NaOH rapid DNA extraction method. The innovative approach achieved rapid, real-time, and accurate detection of the three Avr genes in the field, which is helpful to understand the distribution frequency of the three Avr genes in the field and provide theoretical reference for the scientific layout of resistant rice varieties.
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Affiliation(s)
- Zhongqiang Qi
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
- IRRI-JAAS Joint Laboratory, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Fangyi Ju
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Yunxia Guo
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Yan Du
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Junjie Yu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Rongsheng Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Mina Yu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Huijuan Cao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Tianqiao Song
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Xiayan Pan
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
| | - Tingting Dai
- Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
| | - Yongfeng Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Science, Nanjing, China
- IRRI-JAAS Joint Laboratory, Jiangsu Academy of Agricultural Science, Nanjing, China
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Lu J, Liu Y, Song M, Xi Y, Yang H, Liu W, Li X, Norvienyeku J, Zhang Y, Miao W, Lin C. The CsPbs2-interacting protein oxalate decarboxylase CsOxdC3 modulates morphosporogenesis, virulence, and fungicide resistance in Colletotrichum siamense. Microbiol Res 2024; 284:127732. [PMID: 38677265 DOI: 10.1016/j.micres.2024.127732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 04/07/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024]
Abstract
The HOG MAPK pathway mediates diverse cellular and physiological processes, including osmoregulation and fungicide sensitivity, in phytopathogenic fungi. However, the molecular mechanisms underlying HOG MAPK pathway-associated stress homeostasis and pathophysiological developmental events are poorly understood. Here, we demonstrated that the oxalate decarboxylase CsOxdC3 in Colletotrichum siamense interacts with the protein kinase kinase CsPbs2, a component of the HOG MAPK pathway. The expression of the CsOxdC3 gene was significantly suppressed in response to phenylpyrrole and tebuconazole fungicide treatments, while that of CsPbs2 was upregulated by phenylpyrrole and not affected by tebuconazole. We showed that targeted gene deletion of CsOxdC3 suppressed mycelial growth, reduced conidial length, and triggered a marginal reduction in the sporulation characteristics of the ΔCsOxdC3 strains. Interestingly, the ΔCsOxdC3 strain was significantly sensitive to fungicides, including phenylpyrrole and tebuconazole, while the CsPbs2-defective strain was sensitive to tebuconazole but resistant to phenylpyrrole. Additionally, infection assessment revealed a significant reduction in the virulence of the ΔCsOxdC3 strains when inoculated on the leaves of rubber tree (Hevea brasiliensis). From these observations, we inferred that CsOxdC3 crucially modulates HOG MAPK pathway-dependent processes, including morphogenesis, stress homeostasis, fungicide resistance, and virulence, in C. siamense by facilitating direct physical interactions with CsPbs2. This study provides insights into the molecular regulators of the HOG MAPK pathway and underscores the potential of deploying OxdCs as potent targets for developing fungicides.
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Affiliation(s)
- Jingwen Lu
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yu Liu
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Miao Song
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yitao Xi
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Hong Yang
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China; Rubber Research Institute, Chinese Academy of Tropical Agricultural Science, Haikou 571101, China
| | - Wenbo Liu
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Xiao Li
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Justice Norvienyeku
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Yu Zhang
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Weiguo Miao
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
| | - Chunhua Lin
- Sanya Institute of Breeding and Multiplication / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education) / School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
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Huang Q, Chen C, Wu X, Qin Y, Tan X, Zhang D, Liu Y, Li W, Chen Y. Overexpression of ATP Synthase Subunit Beta (Atp2) Confers Enhanced Blast Disease Resistance in Transgenic Rice. J Fungi (Basel) 2023; 10:5. [PMID: 38276021 PMCID: PMC10820023 DOI: 10.3390/jof10010005] [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: 11/06/2023] [Revised: 12/17/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
Previous research has shown that the pathogenicity and appressorium development of Magnaporthe oryzae can be inhibited by the ATP synthase subunit beta (Atp2) present in the photosynthetic bacterium Rhodopseudomonas palustris. In the present study, transgenic plants overexpressing the ATP2 gene were generated via genetic transformation in the Zhonghua11 (ZH11) genetic background. We compared the blast resistance and immune response of ATP2-overexpressing lines and wild-type plants. The expression of the Atp2 protein and the physiology, biochemistry, and growth traits of the mutant plants were also examined. The results showed that, compared with the wild-type plant ZH11, transgenic rice plants heterologously expressing ATP2 had no significant defects in agronomic traits, but the disease lesions caused by the rice blast fungus were significantly reduced. When infected by the rice blast fungus, the transgenic rice plants exhibited stronger antioxidant enzyme activity and a greater ratio of chlorophyll a to chlorophyll b. Furthermore, the immune response was triggered stronger in transgenic rice, especially the increase in reactive oxygen species (ROS), was more strongly triggered in plants. In summary, the expression of ATP2 as an antifungal protein in rice could improve the ability of rice to resist rice blast.
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Affiliation(s)
- Qiang Huang
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (Q.H.)
- State Key Laboratory of Hybrid Rice, Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China (D.Z.); (Y.L.)
| | - Chunyan Chen
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (Q.H.)
- State Key Laboratory of Hybrid Rice, Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China (D.Z.); (Y.L.)
| | - Xiyang Wu
- State Key Laboratory of Hybrid Rice, Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China (D.Z.); (Y.L.)
| | - Yingfei Qin
- State Key Laboratory of Hybrid Rice, Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China (D.Z.); (Y.L.)
| | - Xinqiu Tan
- State Key Laboratory of Hybrid Rice, Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China (D.Z.); (Y.L.)
| | - Deyong Zhang
- State Key Laboratory of Hybrid Rice, Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China (D.Z.); (Y.L.)
| | - Yong Liu
- State Key Laboratory of Hybrid Rice, Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China (D.Z.); (Y.L.)
| | - Wei Li
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (Q.H.)
| | - Yue Chen
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; (Q.H.)
- State Key Laboratory of Hybrid Rice, Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha 410125, China (D.Z.); (Y.L.)
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Saucedo-Bazalar M, Masias P, Nouchi-Moromizato E, Santos C, Mialhe E, Cedeño V. MALDI mass spectrometry-based identification of antifungal molecules from endophytic Bacillus strains with biocontrol potential of Lasiodiplodia theobromae, a grapevine trunk pathogen in Peru. CURRENT RESEARCH IN MICROBIAL SCIENCES 2023; 5:100201. [PMID: 37752899 PMCID: PMC10518354 DOI: 10.1016/j.crmicr.2023.100201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023] Open
Abstract
Lasiodiplodia theobromae, a grapevine trunk pathogen, is becoming a significant threat to vineyards worldwide. In Peru, it is responsible for Botryosphaeria dieback in many grapevine-growing areas and it has spread rapidly due to its high transmissibility; hence, control measures are urgent. It is known that some endophytic bacteria are strong inhibitors of phytopathogens because they produce a wide range of antimicrobial molecules. However, studies of antimicrobial features from endophytic bacteria are limited to traditional confrontation methods. In this study, a MALDI mass spectrometry-based approach was performed to identify and characterize the antifungal molecules from Bacillus velezensis M1 and Bacillus amyloliquefaciens M2 grapevine endophytic strains. Solid medium antagonism assays were performed confronting B. velezensis M1 - L. theobromae and B. amyloliquefaciens M2 - L. theobromae for antifungal lipopeptides identification. By a MALDI TOF MS it was possible identify mass spectra for fengycin, iturin and surfactin protoned isoforms. Masses spectrums for mycobacillin and mycosubtilin were also identified. Using MALDI Imaging MS we were able to visualize and relate lipopeptides mass spectra of fengycin (1463.9 m/z) and mycobacillin (1529.6 m/z) in the interaction zone during confrontations. The presence of lipopeptides-synthesis genes was confirmed by PCR. Liquid medium antagonism assays were performed for a proteomic analysis during the confrontation of B. velezensis M1 - L. theobromae. Different peptide sequences corresponding to many antifungal proteins and enzymes were identified by MALDI TOF MS/MS. Oxalate decarboxylase bacisubin and flagellin, reported as antifungal proteins, were identified at 99 % identity through peptide mapping. MALDI mass spectrometry-based identification of antifungal molecules would allow the early selection of endophytic bacteria with antifungal features. This omics tool could lead to measures for prevention of grapevine diseases and other economically important crops in Peru.
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Affiliation(s)
- Manuel Saucedo-Bazalar
- Departamento de Biología y Bioquímica, Universidad Nacional de Tumbes, Av. Universitaria s/n, Pampa Grande, Tumbes, Peru
- Programa de Maestría en Biotecnología Molecular, Escuela de Posgrado, Universidad Nacional de Tumbes, Av. Universitaria s/n, Pampa Grande, Tumbes, Peru
| | | | - Estefanía Nouchi-Moromizato
- Programa de Maestría en Biotecnología Molecular, Escuela de Posgrado, Universidad Nacional de Tumbes, Av. Universitaria s/n, Pampa Grande, Tumbes, Peru
| | | | - Eric Mialhe
- INCABIOTEC SAC, Jr. Filipinas 212, Tumbes, Peru
| | - Virna Cedeño
- INCABIOTEC SAC, Jr. Filipinas 212, Tumbes, Peru
- CONCEPTO AZUL, Circunvalación Norte, 528 B, Urdesa, Guayaquil, Ecuador
- CEBIOMICS S.A. Calle 28 #2624 y Avenida Flavio Reyes, Manta, Ecuador
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Gupta S, Kanwar SS. Molecular characterization and in silico analysis of oxalate decarboxylase of Pseudomonas sp. OXDC12. J Biomol Struct Dyn 2023; 41:1495-1509. [PMID: 35007451 DOI: 10.1080/07391102.2021.2024882] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Oxalate decarboxylase (OxDC) is a Mn-dependent hexameric enzyme that is highly important in management of calcium oxalate mediated nephrolithiasis. The present study reported the production and purification of OxDC from Pseudomonas sp. OXDC12 up to 45.3-fold with an overall yield of 7%. The purified OxDC displayed a single band of approximately 40 kDa on SDS-PAGE and 240 kDa on Native-PAGE suggesting it to be a hexameric enzyme. The purified OxDC displayed an optimum activity at 26 °C and pH 4.5 in the presence of substrate sodium oxalate (30 mg/mL) with a Km and Vmax value of 43.9 mM and 8.9 µmol/min, respectively and an activation energy of 52.49 kJ/mol. The enzyme activity was significantly enhanced by adding o-phenylenediamine to the reaction mixture. OxDC exhibited a very low 17 haemolytic activity which suggested a relatively safer therapeutic aspect of the tested OxDC. The structure prediction studies of the OxDC revealed a tertiary structure with α/β chains that formed the β barrel structure, typical of all cupin domains. The Ramachandran plot produced by PROCHECK shows that 90.5% of the residues are in the most favoured region and hence the OxDC model produced was a good one. Docking studies revealed the binding of the metal ions and ligands to cluster of three histidine residues in the N terminal domain that formed the active site pocket of the enzyme. It was suggested that the histidine coordinated Mn2+ ion was critical for substrate recognition and binding and was also directly involved in OxDC catalyses.highlightsOxalate decarboxylase (OxDC) was successfully purified from Pseudomonas sp. OXDC12 up-to 45.3-fold.The Km and Vmax values of the purified OxDC were calculated as 43.9 mM and 8.9 µmol/min, respectively.Genre analysis and structure prediction studies revealed the presence of β barrel structure typical of all cupin domains. The model exhibited a bi-cupin domain that forms the dimer of the homo-hexameric OxDC.Docking experiments revealed that the cluster of three HIS residues in the N terminal domain of the tested enzyme formed the active site pocket for binding of Mn as well as the ligands.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shruti Gupta
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, India
| | - Shamsher Singh Kanwar
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla, India
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Grąz M, Ruminowicz-Stefaniuk M, Jarosz-Wilkołazka A. Oxalic acid degradation in wood-rotting fungi. Searching for a new source of oxalate oxidase. World J Microbiol Biotechnol 2023; 39:13. [PMID: 36380124 PMCID: PMC9666339 DOI: 10.1007/s11274-022-03449-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 10/27/2022] [Indexed: 11/17/2022]
Abstract
Oxalate oxidase (EC 1.2.3.4) is an oxalate-decomposing enzyme predominantly found in plants but also described in basidiomycete fungi. In this study, we investigated 23 fungi to determine their capability of oxalic acid degradation. After analyzing their secretomes for the products of the oxalic acid-degrading enzyme activity, three groups were distinguished among the fungi studied. The first group comprised nine fungi classified as oxalate oxidase producers, as their secretome pattern revealed an increase in the hydrogen peroxide concentration, no formic acid, and a reduction in the oxalic acid content. The second group of fungi comprised eight fungi described as oxalate decarboxylase producers characterized by an increase in the formic acid level associated with a decrease in the oxalate content in their secretomes. In the secretomes of the third group of six fungi, no increase in formic acid or hydrogen peroxide contents was observed but a decline in the oxalate level was found. The intracellular activity of OXO in the mycelia of Schizophyllum commune, Trametes hirsuta, Gloeophyllum trabeum, Abortiporus biennis, Cerrena unicolor, Ceriosporopsis mediosetigera, Trametes sanguinea, Ceriporiopsis subvermispora, and Laetiporus sulphureus was confirmed by a spectrophotometric assay.
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Affiliation(s)
- Marcin Grąz
- grid.29328.320000 0004 1937 1303Department of Biochemistry and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
| | - Marta Ruminowicz-Stefaniuk
- grid.29328.320000 0004 1937 1303Department of Biochemistry and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
| | - Anna Jarosz-Wilkołazka
- grid.29328.320000 0004 1937 1303Department of Biochemistry and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
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Senapati M, Tiwari A, Sharma N, Chandra P, Bashyal BM, Ellur RK, Bhowmick PK, Bollinedi H, Vinod KK, Singh AK, Krishnan SG. Rhizoctonia solani Kühn Pathophysiology: Status and Prospects of Sheath Blight Disease Management in Rice. FRONTIERS IN PLANT SCIENCE 2022; 13:881116. [PMID: 35592572 PMCID: PMC9111526 DOI: 10.3389/fpls.2022.881116] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/06/2022] [Indexed: 05/14/2023]
Abstract
Sheath blight caused by necrotrophic fungus Rhizoctonia solani Kühn is one of the most serious diseases of rice. Use of high yielding semi dwarf cultivars with dense planting and high dose of nitrogenous fertilizers accentuates the incidence of sheath blight in rice. Its diverse host range and ability to remain dormant under unfavorable conditions make the pathogen more difficult to manage. As there are no sources of complete resistance, management through chemical control has been the most adopted method for sheath blight management. In this review, we provide an up-to-date comprehensive description of host-pathogen interactions, various control measures such as cultural, chemical, and biological as well as utilizing host plant resistance. The section on utilizing host plant resistance includes identification of resistant sources, mapping QTLs and their validation, identification of candidate gene(s) and their introgression through marker-assisted selection. Advances and prospects of sheath blight management through biotechnological approaches such as overexpression of genes and gene silencing for transgenic development against R. solani are also discussed.
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Affiliation(s)
- Manoranjan Senapati
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Ajit Tiwari
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Neha Sharma
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Priya Chandra
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Bishnu Maya Bashyal
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Ranjith Kumar Ellur
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | | | - Haritha Bollinedi
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - K. K. Vinod
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - Ashok Kumar Singh
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | - S. Gopala Krishnan
- Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi, India
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Towards Understanding the Involvement of H +-ATPase in Programmed Cell Death of Psammosilene tunicoides after Oxalic Acid Application. Molecules 2021; 26:molecules26226957. [PMID: 34834048 PMCID: PMC8622363 DOI: 10.3390/molecules26226957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/08/2021] [Accepted: 11/15/2021] [Indexed: 11/22/2022] Open
Abstract
Psammosilene tunicoides is a unique perennial medicinal plant species native to the Southwestern regions of China. Its wild population is rare and endangered due to over-excessive collection and extended growth (4–5 years). This research shows that H+-ATPase activity was a key factor for oxalate-inducing programmed cell death (PCD) of P. tunicoides suspension cells. Oxalic acid (OA) is an effective abiotic elicitor that enhances a plant cell’s resistance to environmental stress. However, the role of OA in this process remains to be mechanistically unveiled. The present study evaluated the role of OA-induced cell death using an inverted fluorescence microscope after staining with Evans blue, FDA, PI, and Rd123. OA-stimulated changes in K+ and Ca2+ trans-membrane flows using a patch-clamp method, together with OA modulation of H+-ATPase activity, were further examined. OA treatment increased cell death rate in a dosage-and duration-dependent manner. OA significantly decreased the mitochondria activity and damaged its electron transport chain. The OA treatment also decreased intracellular pH, while the FC increased the pH value. Simultaneously, NH4Cl caused intracellular acidification. The OA treatment independently resulted in 90% and the FC led to 25% cell death rates. Consistently, the combined treatments caused a 31% cell death rate. Furthermore, treatment with EGTA caused a similar change in intracellular pH value to the La3+ and OA application. Combined results suggest that OA-caused cell death could be attributed to intracellular acidification and the involvement of OA in the influx of extracellular Ca2+, thereby leading to membrane depolarization. Here we explore the resistance mechanism of P. tunicoides cells against various stresses endowed by OA treatment.
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Du Y, Qi Z, Liang D, Yu J, Yu M, Zhang R, Cao H, Yong M, Pan X, Yin X, Qiao J, Liu Y, Chen Z, Song T, Liu W, Zhang Z, Liu Y. Pyricularia sp. jiangsuensis, a new cryptic rice panicle blast pathogen from rice fields in Jiangsu Province, China. Environ Microbiol 2021; 23:5463-5480. [PMID: 34288342 DOI: 10.1111/1462-2920.15678] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/10/2021] [Accepted: 07/18/2021] [Indexed: 11/30/2022]
Abstract
Pyricularia oryzae is a multi-host pathogen causing cereal disease, including the devastating rice blast. Panicle blast is a serious stage, leading to severe yield loss. Thirty-one isolates (average 4.1%) were collected from the rice panicle lesions at nine locations covering Jiangsu province from 2010 to 2017. These isolates were characterized as Pyricularia sp. jiangsuensis distinct from known Pyricularia species. The representative strain 18-2 can infect rice panicle, root and five kinds of grasses. Intriguingly, strain 18-2 can co-infect rice leaf with P. oryzae Guy11. The whole genome of P. sp. jiangsuensis 18-2 was sequenced. Nine effectors were distributed in translocation or inversion region, which may link to the rapid evolution of effectors. Twenty-one homologues of known blast-effectors were identified in strain 18-2, seven effectors including the homologues of SLP1, BAS2, BAS113, CDIP2/3, MoHEG16 and Avr-Pi54, were upregulated in the sample of inoculated panicle with strain 18-2 at 24 hpi compared with inoculation at 8 hpi. Our results provide evidences that P. sp. jiangsuensis represents an addition to the mycobiota of blast disease. This study advances our understanding of the pathogenicity of P. sp. jiangsuensis to hosts, which sheds new light on the adaptability in the co-evolution of pathogen and host.
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Affiliation(s)
- Yan Du
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Zhongqiang Qi
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Dong Liang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Junjie Yu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Mina Yu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Rongsheng Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Huijuan Cao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Mingli Yong
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Xiayan Pan
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Xiaole Yin
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Junqing Qiao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Youzhou Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Zhiyi Chen
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Tianqiao Song
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Wende Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Zhengguang Zhang
- Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yongfeng Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.,International Rice Research Institute, Jiangsu Academy of Agricultural Sciences Joint Laboratory, Nanjing, 210014, China
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Pastore AJ, Teo RD, Montoya A, Burg MJ, Twahir UT, Bruner SD, Beratan DN, Angerhofer A. Oxalate decarboxylase uses electron hole hopping for catalysis. J Biol Chem 2021; 297:100857. [PMID: 34097877 PMCID: PMC8254039 DOI: 10.1016/j.jbc.2021.100857] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 05/28/2021] [Accepted: 06/03/2021] [Indexed: 01/16/2023] Open
Abstract
The hexameric low-pH stress response enzyme oxalate decarboxylase catalyzes the decarboxylation of the oxalate mono-anion in the soil bacterium Bacillus subtilis. A single protein subunit contains two Mn-binding cupin domains, and catalysis depends on Mn(III) at the N-terminal site. The present study suggests a mechanistic function for the C-terminal Mn as an electron hole donor for the N-terminal Mn. The resulting spatial separation of the radical intermediates directs the chemistry toward decarboxylation of the substrate. A π-stacked tryptophan pair (W96/W274) links two neighboring protein subunits together, thus reducing the Mn-to-Mn distance from 25.9 Å (intrasubunit) to 21.5 Å (intersubunit). Here, we used theoretical analysis of electron hole-hopping paths through redox-active sites in the enzyme combined with site-directed mutagenesis and X-ray crystallography to demonstrate that this tryptophan pair supports effective electron hole hopping between the C-terminal Mn of one subunit and the N-terminal Mn of the other subunit through two short hops of ∼8.5 Å. Replacement of W96, W274, or both with phenylalanine led to a large reduction in catalytic efficiency, whereas replacement with tyrosine led to recovery of most of this activity. W96F and W96Y mutants share the wildtype tertiary structure. Two additional hole-hopping networks were identified leading from the Mn ions to the protein surface, potentially protecting the enzyme from high Mn oxidation states during turnover. Our findings strongly suggest that multistep hole-hopping transport between the two Mn ions is required for enzymatic function, adding to the growing examples of proteins that employ aromatic residues as hopping stations.
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Affiliation(s)
- Anthony J Pastore
- Department of Chemistry, University of Florida, Gainesville, Florida, USA
| | - Ruijie D Teo
- Department of Chemistry, Duke University, Durham, North Carolina, USA
| | - Alvaro Montoya
- Department of Chemistry, University of Florida, Gainesville, Florida, USA
| | - Matthew J Burg
- Department of Chemistry, University of Florida, Gainesville, Florida, USA
| | - Umar T Twahir
- Department of Chemistry, University of Florida, Gainesville, Florida, USA
| | - Steven D Bruner
- Department of Chemistry, University of Florida, Gainesville, Florida, USA
| | - David N Beratan
- Department of Chemistry, Duke University, Durham, North Carolina, USA.
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Li D, Li S, Wei S, Sun W. Strategies to Manage Rice Sheath Blight: Lessons from Interactions between Rice and Rhizoctonia solani. RICE (NEW YORK, N.Y.) 2021; 14:21. [PMID: 33630178 PMCID: PMC7907341 DOI: 10.1186/s12284-021-00466-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
Rhizoctonia solani is an important phytopathogenic fungus with a wide host range and worldwide distribution. The anastomosis group AG1 IA of R. solani has been identified as the predominant causal agent of rice sheath blight, one of the most devastating diseases of crop plants. As a necrotrophic pathogen, R. solani exhibits many characteristics different from biotrophic and hemi-biotrophic pathogens during co-evolutionary interaction with host plants. Various types of secondary metabolites, carbohydrate-active enzymes, secreted proteins and effectors have been revealed to be essential pathogenicity factors in R. solani. Meanwhile, reactive oxygen species, phytohormone signaling, transcription factors and many other defense-associated genes have been identified to contribute to sheath blight resistance in rice. Here, we summarize the recent advances in studies on molecular interactions between rice and R. solani. Based on knowledge of rice-R. solani interactions and sheath blight resistance QTLs, multiple effective strategies have been developed to generate rice cultivars with enhanced sheath blight resistance.
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Affiliation(s)
- Dayong Li
- College of Plant Protection, Jilin Agricultural University, 2888 Xincheng Street, 130118, Changchun, Jilin, China
| | - Shuai Li
- Department of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, 110866, Shenyang, Liaoning, China
| | - Songhong Wei
- Department of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, 110866, Shenyang, Liaoning, China
| | - Wenxian Sun
- College of Plant Protection, Jilin Agricultural University, 2888 Xincheng Street, 130118, Changchun, Jilin, China.
- Department of Plant Pathology, the Ministry of Agriculture Key Laboratory of Pest Monitoring and Green Management, China Agricultural University, 100193, Beijing, China.
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Sha Y, Zeng Q, Sui S. Screening and Application of Bacillus Strains Isolated from Nonrhizospheric Rice Soil for the Biocontrol of Rice Blast. THE PLANT PATHOLOGY JOURNAL 2020; 36:231-243. [PMID: 32547339 PMCID: PMC7272846 DOI: 10.5423/ppj.oa.02.2020.0028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/01/2020] [Accepted: 04/27/2020] [Indexed: 05/05/2023]
Abstract
Rice blast, caused by Magnaporthe oryzae, is one of the most destructive rice diseases worldwide. The aim of this study was to screen bacterial isolates to efficiently prevent the occurrence of rice blast. A total of 232 bacterial isolates were extracted from nonrhizospheric rice soil and were screened for antifungal activity against M. oryzae using a leaf segment assay. Strains S170 and S9 showed significant antagonistic activity against M. oryzae in vitro and in leaf disk assays, and controlled M. oryzae infection under greenhouse conditions. The results showed that strains S170 and S9 could effectively control rice leaf blast and panicle neck blast after five spray treatments in field. This suggested that the bacterial strains S170 and S9 were valuable and promising for the biocontrol of rice disease caused by M. oryzae. Based on 16S rDNA, and gyrA and gyrB gene sequence analyses, S170 and S9 were identified as Bacillus amyloliquefaciens and B. pumilus, respectively. The research also demonstrated that B. amyloliquefaciens S170 and B. pumilus S9 could colonize rice plants to prevent pathogenic infection and evidently suppressed plant disease caused by 11 other plant pathogenic fungi. This is the first study to demonstrate that B. amyloliquefaciens and B. pumilus isolated from nonrhizospheric rice soil are capable of recolonizing internal rice stem tissues.
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Affiliation(s)
- Yuexia Sha
- Institute of Plant Protection, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750011, China
| | - Qingchao Zeng
- College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Shuting Sui
- College of Plant Protection, China Agricultural University, Beijing 100193, China
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Molla KA, Karmakar S, Molla J, Bajaj P, Varshney RK, Datta SK, Datta K. Understanding sheath blight resistance in rice: the road behind and the road ahead. PLANT BIOTECHNOLOGY JOURNAL 2020; 18:895-915. [PMID: 31811745 PMCID: PMC7061877 DOI: 10.1111/pbi.13312] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 11/15/2019] [Accepted: 11/22/2019] [Indexed: 05/03/2023]
Abstract
Rice sheath blight disease, caused by the basidiomycetous necrotroph Rhizoctonia solani, became one of the major threats to the rice cultivation worldwide, especially after the adoption of high-yielding varieties. The pathogen is challenging to manage because of its extensively broad host range and high genetic variability and also due to the inability to find any satisfactory level of natural resistance from the available rice germplasm. It is high time to find remedies to combat the pathogen for reducing rice yield losses and subsequently to minimize the threat to global food security. The development of genetic resistance is one of the alternative means to avoid the use of hazardous chemical fungicides. This review mainly focuses on the effort of better understanding the host-pathogen relationship, finding the gene loci/markers imparting resistance response and modifying the host genome through transgenic development. The latest development and trend in the R. solani-rice pathosystem research with gap analysis are provided.
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Affiliation(s)
- Kutubuddin A. Molla
- ICAR‐National Rice Research InstituteCuttackIndia
- Laboratory of Translational Research on Transgenic CropsDepartment of BotanyUniversity of CalcuttaKolkataIndia
- The Huck Institute of the Life SciencesThe Pennsylvania State UniversityUniversity ParkPAUSA
- Department of Plant Pathology and Environmental MicrobiologyThe Pennsylvania State UniversityUniversity ParkPAUSA
| | - Subhasis Karmakar
- Laboratory of Translational Research on Transgenic CropsDepartment of BotanyUniversity of CalcuttaKolkataIndia
| | - Johiruddin Molla
- Center of Excellence in Genomics & Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Prasad Bajaj
- Center of Excellence in Genomics & Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Rajeev K. Varshney
- Center of Excellence in Genomics & Systems Biology (CEGSB)International Crops Research Institute for the Semi‐Arid Tropics (ICRISAT)HyderabadIndia
| | - Swapan K. Datta
- Laboratory of Translational Research on Transgenic CropsDepartment of BotanyUniversity of CalcuttaKolkataIndia
| | - Karabi Datta
- Laboratory of Translational Research on Transgenic CropsDepartment of BotanyUniversity of CalcuttaKolkataIndia
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Kumar V, Irfan M, Datta A. Manipulation of oxalate metabolism in plants for improving food quality and productivity. PHYTOCHEMISTRY 2019; 158:103-109. [PMID: 30500595 DOI: 10.1016/j.phytochem.2018.10.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 10/23/2018] [Accepted: 10/26/2018] [Indexed: 05/25/2023]
Abstract
Oxalic acid is a naturally occurring metabolite in plants and a common constituent of all plant-derived human diets. Oxalic acid has diverse unrelated roles in plant metabolism, including pH regulation in association with nitrogen metabolism, metal ion homeostasis and calcium storage. In plants, oxalic acid is also a pathogenesis factor and is secreted by various fungi during host infection. Unlike those of plants, fungi and bacteria, the human genome does not contain any oxalate-degrading genes, and therefore, the consumption of large amounts of plant-derived oxalate is considered detrimental to human health. In this review, we discuss recent biotechnological approaches that have been used to reduce the oxalate content of plant tissues.
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Affiliation(s)
- Vinay Kumar
- National Institute of Plant Genome Research, New Delhi, 110067, India
| | - Mohammad Irfan
- National Institute of Plant Genome Research, New Delhi, 110067, India
| | - Asis Datta
- National Institute of Plant Genome Research, New Delhi, 110067, India.
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Combinatorial Interactions of Biotic and Abiotic Stresses in Plants and Their Molecular Mechanisms: Systems Biology Approach. Mol Biotechnol 2018; 60:636-650. [PMID: 29943149 DOI: 10.1007/s12033-018-0100-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Plants are continually facing biotic and abiotic stresses, and hence, they need to respond and adapt to survive. Plant response during multiple and combined biotic and abiotic stresses is highly complex and varied than the individual stress. These stresses resulted alteration of plant behavior through regulating the levels of microRNA, heat shock proteins, epigenetic variations. These variations can cause many adverse effects on the growth and development of the plant. Further, in natural conditions, several abiotic stresses causing factors make the plant more susceptible to pathogens infections and vice-versa. A very intricate and multifaceted interactions of various biomolecules are involved in metabolic pathways that can direct towards a cross-tolerance and improvement of plant's defence system. Systems biology approach plays a significant role in the investigation of these molecular interactions. The valuable information obtained by systems biology will help to develop stress-resistant plant varieties against multiple stresses. Thus, this review aims to decipher various multilevel interactions at the molecular level under combinatorial biotic and abiotic stresses and the role of systems biology to understand these molecular interactions.
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