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de Andrade Bezerra G, Arriel Elias MT, Costa NB, de Filippi MCC. The role of Phanerochaete australis in enhancing defense activity against Magnaporthe oryzae in upland rice. Mycologia 2024; 116:558-576. [PMID: 38819956 DOI: 10.1080/00275514.2024.2345029] [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: 08/02/2023] [Accepted: 04/16/2024] [Indexed: 06/02/2024]
Abstract
The inclusion of biological control in the integrated management of rice blast (Magnaporthe oryzae [Mo]) reduces pesticide application. Phanerochaete australis (Pha) has been shown to be a potential inducer of resistance to rice blast. Pha was isolated saprophytically from the rice phylloplane and studied for its interaction with Mo in the defense process of upland rice plants against the pathogen attack. Investigating the Pha × Mo interaction in a completely randomized design, the suppression of leaf blast and the epidemiological components of disease development were quantified in vivo, whereas the physiological and biochemical aspects, as defense enzymes and oxidative complex components, were evaluated in vitro during the induction of resistance. In the Pha × Mo interaction, it was found that seed treatment can significantly reduce disease severity by up to 93%, increase the photosynthetic apparatus, mobilize photoassimilates to the defense system, intensify defense enzyme and oxidant complex activities (chitinase [CHI], β-1,3-glucanase [GLU], lipoxygenase [LOX], phenylalanine ammonia-lyase [PAL], poliphenoloxidase [PPO], peroxidase [POX], catalase [CAT], cuperoxide dismutase [SOD]), decrease phenolic compounds (TPCs), and increase photosynthetic pigment levels compared with the negative control (Mo). When treating the seed, we are referring to an induction process where there is no physical contact between the pathogens. The enzymes produced by the interaction between the microorganisms validate this process; thus, Pha acts as an inducer of resistance to upland rice plants challenged with Mo.
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Affiliation(s)
- Gustavo de Andrade Bezerra
- Agronomy School, Federal University of Goiás, Goiânia, Goiás 74690900, Brazil
- Agricultural Microbiology Laboratory, Embrapa Rice and Beans, Santo Antônio de Goiás, Goiás 75375000, Brazil
| | | | - Niedja Bezerra Costa
- Environmental Sciences and Biodiversity Laboratory (LCAB), State University of Maranhão, São Luis, Maranhão 65081400, Brazil
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Zhou AA, Li RY, Mo FX, Ding Y, Li RT, Guo X, Hu K, Li M. Natural Product Citronellal can Significantly Disturb Chitin Synthesis and Cell Wall Integrity in Magnaporthe oryzae. J Fungi (Basel) 2022; 8:jof8121310. [PMID: 36547643 PMCID: PMC9784034 DOI: 10.3390/jof8121310] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/10/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Natural products are often favored in the study of crop pests and diseases. Previous studies have shown that citronellal has a strong inhibition effect on Magnaporthe oryzae. The objective of this study was to clarify its mechanism of action against M. oryzae. RESULTS Firstly, the biological activity of citronellal against M. oryzae was determined by direct and indirect methods, and the results show that citronellal had a strong inhibition effect on M. oryzae with EC50 values of 134.00 mg/L and 70.48 μL/L air, respectively. Additionally, a preliminary study on its mechanism of action was studied. After citronellal treatment, electron microscopy revealed that the mycelium became thin and broken; scanning electron microscopy revealed that the mycelium was wrinkled and distorted; and transmission electron microscopy revealed that the mycelium cell wall was invaginated, the mass wall of mycelium was separated, and the organelles were blurred. The mycelium was further stained with CFW, and the nodes were blurred, while the mycelium was almost non-fluorescent after PI staining, and there was no significant difference in the relative conductivity of mycelium. In addition, chitinase was significantly enhanced, and the expression of chitin synthesis-related genes was 17.47-fold upregulated. Finally, we found that the efficacy of citronellal against the rice blast was as high as 82.14% according to indoor efficacy tests. CONCLUSION These results indicate that citronellal can affect the synthesis of chitin in M. oryzae and damage its cell wall, thereby inhibiting the growth of mycelium and effectively protecting rice from rice blasts.
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Affiliation(s)
- Ai-Ai Zhou
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Rong-Yu Li
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
- The Provincial Key Laboratory for Agricultural Pest Management in Mountainous Region, Guiyang 550025, China
- Correspondence: ; Tel.: +86-151-8514-8063
| | - Fei-Xu Mo
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Yi Ding
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Ruo-Tong Li
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Xue Guo
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Ke Hu
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Ming Li
- Institute of Crop Protection, Guizhou University, Guiyang 550025, China
- College of Agriculture, Guizhou University, Guiyang 550025, China
- The Provincial Key Laboratory for Agricultural Pest Management in Mountainous Region, Guiyang 550025, China
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Taunk K, Porto-Figueira P, Pereira JAM, Taware R, da Costa NL, Barbosa R, Rapole S, Câmara JS. Urinary Volatomic Expression Pattern: Paving the Way for Identification of Potential Candidate Biosignatures for Lung Cancer. Metabolites 2022; 12:36. [PMID: 35050157 PMCID: PMC8780352 DOI: 10.3390/metabo12010036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/13/2021] [Accepted: 12/21/2021] [Indexed: 12/24/2022] Open
Abstract
The urinary volatomic profiling of Indian cohorts composed of 28 lung cancer (LC) patients and 27 healthy subjects (control group, CTRL) was established using headspace solid phase microextraction technique combined with gas chromatography mass spectrometry methodology as a powerful approach to identify urinary volatile organic metabolites (uVOMs) to discriminate among LC patients from CTRL. Overall, 147 VOMs of several chemistries were identified in the intervention groups-including naphthalene derivatives, phenols, and organosulphurs-augmented in the LC group. In contrast, benzene and terpenic derivatives were found to be more prevalent in the CTRL group. The volatomic data obtained were processed using advanced statistical analysis, namely partial least square discriminative analysis (PLS-DA), support vector machine (SVM), random forest (RF), and multilayer perceptron (MLP) methods. This resulted in the identification of nine uVOMs with a higher potential to discriminate LC patients from CTRL subjects. These were furan, o-cymene, furfural, linalool oxide, viridiflorene, 2-bromo-phenol, tricyclazole, 4-methyl-phenol, and 1-(4-hydroxy-3,5-di-tert-butylphenyl)-2-methyl-3-morpholinopropan-1-one. The metabolic pathway analysis of the data obtained identified several altered biochemical pathways in LC mainly affecting glycolysis/gluconeogenesis, pyruvate metabolism, and fatty acid biosynthesis. Moreover, acetate and octanoic, decanoic, and dodecanoic fatty acids were identified as the key metabolites responsible for such deregulation. Furthermore, studies involving larger cohorts of LC patients would allow us to consolidate the data obtained and challenge the potential of the uVOMs as candidate biomarkers for LC.
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Affiliation(s)
- Khushman Taunk
- Proteomics Lab, National Centre for Cell Science (NCCS), Ganeshkhind, SPPU Campus, Pune 411007, India; (K.T.); (R.T.)
| | - Priscilla Porto-Figueira
- CQM—Centro de Química da Madeira, Centro de Ciências Exatas e da Engenharia, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal; (P.P.-F.); (J.A.M.P.)
| | - Jorge A. M. Pereira
- CQM—Centro de Química da Madeira, Centro de Ciências Exatas e da Engenharia, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal; (P.P.-F.); (J.A.M.P.)
| | - Ravindra Taware
- Proteomics Lab, National Centre for Cell Science (NCCS), Ganeshkhind, SPPU Campus, Pune 411007, India; (K.T.); (R.T.)
| | - Nattane Luíza da Costa
- Instituto de Informática, Alameda Palmeiras, Quadra D, Campus Samambaia, Universidade Federal de Goiás, Goiânia 74690-900, GO, Brazil; (N.L.d.C.); (R.B.)
| | - Rommel Barbosa
- Instituto de Informática, Alameda Palmeiras, Quadra D, Campus Samambaia, Universidade Federal de Goiás, Goiânia 74690-900, GO, Brazil; (N.L.d.C.); (R.B.)
| | - Srikanth Rapole
- Proteomics Lab, National Centre for Cell Science (NCCS), Ganeshkhind, SPPU Campus, Pune 411007, India; (K.T.); (R.T.)
| | - José S. Câmara
- CQM—Centro de Química da Madeira, Centro de Ciências Exatas e da Engenharia, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal; (P.P.-F.); (J.A.M.P.)
- Faculdade de Ciências Exatas e da Engenharia, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
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