Targeted Metabolic Profiles of the Leaves and Xylem Sap of Two Sugarcane Genotypes Infected with the Vascular Bacterial Pathogen <i>Leifsonia xyli</i> subsp. <i>xyli</i>
Ratoon stunt (RS) is a worldwide disease that reduces biomass up to 80% and is caused by the xylem-dwelling bacterium <i>Leifsonia xyli</i> subsp. <i>xyli</i>. This study identified discriminant metabolites between a resistant (R) and a susceptible (S) sugarcane variety at th...
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2021-04-01
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| author | Fernanda R. Castro-Moretti Jean-Christophe Cocuron Mariana C. Cia Thais R. Cataldi Carlos A. Labate Ana Paula Alonso Luis E. A. Camargo |
| author_facet | Fernanda R. Castro-Moretti Jean-Christophe Cocuron Mariana C. Cia Thais R. Cataldi Carlos A. Labate Ana Paula Alonso Luis E. A. Camargo |
| author_sort | Fernanda R. Castro-Moretti |
| collection | DOAJ |
| description | Ratoon stunt (RS) is a worldwide disease that reduces biomass up to 80% and is caused by the xylem-dwelling bacterium <i>Leifsonia xyli</i> subsp. <i>xyli</i>. This study identified discriminant metabolites between a resistant (R) and a susceptible (S) sugarcane variety at the early stages of pathogen colonization (30 and 120 days after inoculation—DAI) by untargeted and targeted metabolomics of leaves and xylem sap using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS), respectively. Bacterial titers were quantified in sugarcane extracts at 180 DAI through real-time polymerase chain reaction. Bacterial titers were at least four times higher on the S variety than in the R one. Global profiling detected 514 features in the leaves and 68 in the sap, while 119 metabolites were quantified in the leaves and 28 in the sap by targeted metabolomics. Comparisons between mock-inoculated treatments indicated a greater abundance of amino acids in the leaves of the S variety and of phenolics, flavonoids, and salicylic acid in the R one. In the xylem sap, fewer differences were detected among phenolics and flavonoids, but also included higher abundances of the signaling molecule sorbitol and glycerol in R. Metabolic changes in the leaves following pathogen inoculation were detected earlier in R than in S and were mostly related to amino acids in R and to phosphorylated compounds in S. Differentially represented metabolites in the xylem sap included abscisic acid. The data represent a valuable resource of potential biomarkers for metabolite-assisted selection of resistant varieties to RS. |
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| issn | 2218-1989 |
| language | English |
| last_indexed | 2024-03-10T12:25:10Z |
| publishDate | 2021-04-01 |
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| series | Metabolites |
| spelling | doaj.art-7cf78de1ffae4d7c8baf688ee7ef87a72023-11-21T15:08:34ZengMDPI AGMetabolites2218-19892021-04-0111423410.3390/metabo11040234Targeted Metabolic Profiles of the Leaves and Xylem Sap of Two Sugarcane Genotypes Infected with the Vascular Bacterial Pathogen <i>Leifsonia xyli</i> subsp. <i>xyli</i>Fernanda R. Castro-Moretti0Jean-Christophe Cocuron1Mariana C. Cia2Thais R. Cataldi3Carlos A. Labate4Ana Paula Alonso5Luis E. A. Camargo6Department of Biological Sciences, University of North Texas, 1504 W Mulberry St., Denton, TX 76201, USADepartment of Biological Sciences, University of North Texas, 1504 W Mulberry St., Denton, TX 76201, USACentro de Tecnologia Canavieira, Fazenda Santo Antonio, Piracicaba 13418-970, BrazilDepartment of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba 13418-900, BrazilDepartment of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba 13418-900, BrazilDepartment of Biological Sciences, University of North Texas, 1504 W Mulberry St., Denton, TX 76201, USADepartment of Plant Pathology and Nematology, Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba 13418-900, BrazilRatoon stunt (RS) is a worldwide disease that reduces biomass up to 80% and is caused by the xylem-dwelling bacterium <i>Leifsonia xyli</i> subsp. <i>xyli</i>. This study identified discriminant metabolites between a resistant (R) and a susceptible (S) sugarcane variety at the early stages of pathogen colonization (30 and 120 days after inoculation—DAI) by untargeted and targeted metabolomics of leaves and xylem sap using gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS), respectively. Bacterial titers were quantified in sugarcane extracts at 180 DAI through real-time polymerase chain reaction. Bacterial titers were at least four times higher on the S variety than in the R one. Global profiling detected 514 features in the leaves and 68 in the sap, while 119 metabolites were quantified in the leaves and 28 in the sap by targeted metabolomics. Comparisons between mock-inoculated treatments indicated a greater abundance of amino acids in the leaves of the S variety and of phenolics, flavonoids, and salicylic acid in the R one. In the xylem sap, fewer differences were detected among phenolics and flavonoids, but also included higher abundances of the signaling molecule sorbitol and glycerol in R. Metabolic changes in the leaves following pathogen inoculation were detected earlier in R than in S and were mostly related to amino acids in R and to phosphorylated compounds in S. Differentially represented metabolites in the xylem sap included abscisic acid. The data represent a valuable resource of potential biomarkers for metabolite-assisted selection of resistant varieties to RS.https://www.mdpi.com/2218-1989/11/4/234bacterial pathogenmetabolomicsplant defenseratoon stunting disease<i>Saccharum</i> spp. |
| spellingShingle | Fernanda R. Castro-Moretti Jean-Christophe Cocuron Mariana C. Cia Thais R. Cataldi Carlos A. Labate Ana Paula Alonso Luis E. A. Camargo Targeted Metabolic Profiles of the Leaves and Xylem Sap of Two Sugarcane Genotypes Infected with the Vascular Bacterial Pathogen <i>Leifsonia xyli</i> subsp. <i>xyli</i> Metabolites bacterial pathogen metabolomics plant defense ratoon stunting disease <i>Saccharum</i> spp. |
| title | Targeted Metabolic Profiles of the Leaves and Xylem Sap of Two Sugarcane Genotypes Infected with the Vascular Bacterial Pathogen <i>Leifsonia xyli</i> subsp. <i>xyli</i> |
| title_full | Targeted Metabolic Profiles of the Leaves and Xylem Sap of Two Sugarcane Genotypes Infected with the Vascular Bacterial Pathogen <i>Leifsonia xyli</i> subsp. <i>xyli</i> |
| title_fullStr | Targeted Metabolic Profiles of the Leaves and Xylem Sap of Two Sugarcane Genotypes Infected with the Vascular Bacterial Pathogen <i>Leifsonia xyli</i> subsp. <i>xyli</i> |
| title_full_unstemmed | Targeted Metabolic Profiles of the Leaves and Xylem Sap of Two Sugarcane Genotypes Infected with the Vascular Bacterial Pathogen <i>Leifsonia xyli</i> subsp. <i>xyli</i> |
| title_short | Targeted Metabolic Profiles of the Leaves and Xylem Sap of Two Sugarcane Genotypes Infected with the Vascular Bacterial Pathogen <i>Leifsonia xyli</i> subsp. <i>xyli</i> |
| title_sort | targeted metabolic profiles of the leaves and xylem sap of two sugarcane genotypes infected with the vascular bacterial pathogen i leifsonia xyli i subsp i xyli i |
| topic | bacterial pathogen metabolomics plant defense ratoon stunting disease <i>Saccharum</i> spp. |
| url | https://www.mdpi.com/2218-1989/11/4/234 |
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