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Impact of Leifsonia xyli subsp. xyli titer on nutritional status, and metabolism of sugar cane

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Abstract

Aims

Sugarcane plants infected with Leifsonia xyli subsp. xyli (Lxx) have their primary metabolism affected with decreased levels of sugars and amino acids. Cysteine and methionine are sulfur-containing essential amino acids used for bacterial growth and the Lxx titer in sugar cane leaves could affect the animo acid concentrations. The goal of this study was to evaluate how the increase in Lxx titer affects the nutritional status and sulfur metabolism in sugar cane leaves.

Methods

Susceptible sugar cane (Saccharum officinarum) genotype: CB49260 was used in this study with low (256 cells) and high (2090 cells) Lxx titers and macronutrients and primary metabolites assessed from leaves and culms.

Results

Plants with high Lxx titers accumulated more biomass in the main culm, leaves, and shoots than plants with low Lxx titers. Additionally, plants with high Lxx titers had 26% more sulfur content in leaves than plants with low Lxx titers. Higher levels of sulfate, sucrose, maltose, raffinose, shikimic acid, malate, putrescine, glycerol, and, erythritol were also present in plants with high Lxx titers; but decreased levels of methionine and glutathione in leaves. In the culm, plants with high Lxx titers also had increased levels of maltose; but decreased levels of threonine, ornithine, phenylalanine and myo-inositol when compared with plants with low Lxx titers.

Conclusions

This study demonstrated that high bacterial titers increase sulfur demand in sugar cane; however, the increased S content in the leaf did not result in higher sulfur assimilation, verified by increased sulfate but decreased methionine and glutathione levels. Therefore, our study showed that lower methionine availability, and methionine catabolism to putrescine in the leaves may fail to meet the increased sulfur organic compound demand of Lxx. The decrease in glutathione biosynthesis may reflect impaired biosynthesis or a drain on this antioxidant resulting from oxidative stresss by pathogenesis of Lxx.

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Data availability

The data that support the findings of this study are available from the corresponding author with a reasonable request.

Abbreviations

APS:

Adenosine phosphosulfate

DAP:

Days after planting

DTNB:

5,5′-Dithiobis(2-nitrobenzoic acid)

EDTA:

Ethylenediaminetetraacetic acid

GR:

Glutathione Reductase

GSH:

Reduced glutathione

GSSH:

Oxidized glutathione

GST:

Total glutathione

Lxx :

Leifsonia xyli subsp. xyli

MDA:

Malonoaldeyde

NADPH:

Nicotinamide adenine dinucleotide phosphate

PVPP:

Polyvinylpolypyrrolidone

RSD:

Ratoon stunting disease

SAM:

S-adenosylmethionine

TCA:

Tricarboxylic acid

References

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Acknowledgements

This study was financed in part by the Coordination for the Improvement of Higher Education Personnel (CAPES) - Brazil (CAPES) - Finance Code 001 and The Brazilian National Council for Scientific and Technological Development (CNPQ), through a scholarship (# 169260/2017-8). JL is grateful to CNPq for the productivity grant # 303718/2020-0. We would also like to thank the technicians Pedro Conceição Arthuso, Salete Aparecida Gaziola and Cleusa Pereira Cabral for their technical support in this study.

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Authors and Affiliations

Authors

Contributions

FHSG designed the experiments, FHSG, APDJ, MN, SP, and JF performed the experiments, FHSG and SJM wrote the manuscript, FHSG and SP analyzed the data, FHSG, SP, and SJM created and edited figures, FHSG, APDJ, MN, SP, JL, SJM, ARF, and RAK revised this draft by rewriting, discussing and commenting. All authors read and approved the manuscript.

Corresponding author

Correspondence to Fernando Henrique Silva Garcia.

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The manuscript does not present any kind of conflict of interest.

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Garcia, F.H.S., Domingues-Júnior, A.P., Lima Nogueira, M. et al. Impact of Leifsonia xyli subsp. xyli titer on nutritional status, and metabolism of sugar cane. Plant Soil 493, 341–354 (2023). https://doi.org/10.1007/s11104-023-06230-0

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  • DOI: https://doi.org/10.1007/s11104-023-06230-0

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