Impact of the colonization of Leifsonia xyli subsp. xyli in a susceptible sugarcane genotype on water status and physiological traits

García, Fernando; Barros, Timóteo Herculino da Silva; Coelho, Rubens Duarte; Laborde, Marie Caroline Ferreira; Azevedo, Ricardo Antunes; Lyra, Danilo Hottis; Kluge, Ricardo Alfredo

doi:10.1007/s10658-021-02209-8

Cited by 5 publications

(1 citation statement)

References 36 publications

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“…Leifsonia, however, links most soil physiochemical and enzyme factors. Some Leifsonia members can promote plant growth [97] and enhance host resistance to drought stress [98], whereas others have been reported as specific pathogens [99]. Interestingly, Leifsonia xyli HS0904 can produce carbonyl reductase and has been genetically modified to improve industrial catalytic efficiency [100], and other Leifsonia members can produce bacterial cellulose [101].…”

Section: P Bournei Replanting Enhances Soil Carbon Accumulationmentioning

confidence: 99%

Influence of Phoebe bournei (Hemsl.) Replanting on Soil Carbon Content and Microbial Processes in a Degraded Fir Forest

Li,

Zhou,

et al. 2023

Forests

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Replanting is a widely used method for improving the health and carbon sequestration capacity of degraded forests. However, its impact on soil carbon pools remains controversial. This study investigated the effects of replanting broadleaf Phoebe bournei (Hemsl.) Yang in a typical degraded fir forest. Soil carbon content, nutrient levels, and microbial community structure and function were measured at 0, 5, 8, and 12 years after replanting. The degraded fir forests were originally limited in nitrogen and phosphorus. Phoebe bournei replanting significantly increased soil total carbon but reduced total nitrogen and phosphorus levels, resulting in increased soil carbon:nitrogen, carbon:phosphorus, and nitrogen:phosphorus ratios. Microbial biomass carbon, nitrogen, and phosphorus were all significantly reduced, whereas microbial carbon:phosphorus and nitrogen:phosphorus ratios were enhanced. Enzyme activities related to nutrient cycling and carbon decomposition (acidic invertase, polyphenol oxidase, peroxidase, urase, nitrate reductase, and acidic phosphatase activities) were significantly lowered by replanting. Microbial richness and diversity significantly increased, and microbial community composition changed significantly due to replanting. Structural equation modeling revealed the significant role of total phosphorus in microbial biomass, microbial community composition, and enzyme activity, highlighting it as the main factor accelerating soil carbon accumulation. Network analysis identified Leifsonia, Bradyrhizobium, and Mycolicibacterium members as key microbial players in the soil carbon cycle. In summary, P. bournei replanting exacerbated soil phosphorus deficiency, leading to a decrease in soil microbial biomass and changes in community structure, reduced nutrient cycling and carbon-decomposition-related enzyme activities, less litter decomposition, and increased organic carbon accumulation. These findings demonstrate the importance of nutrient limitation in promoting soil carbon accumulation and offer new insights for soil carbon regulation strategies in forestry.

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Section: P Bournei Replanting Enhances Soil Carbon Accumulationmentioning

confidence: 99%

Influence of Phoebe bournei (Hemsl.) Replanting on Soil Carbon Content and Microbial Processes in a Degraded Fir Forest

Li,

Zhou,

et al. 2023

Forests

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

Garcia,

Domingues-Júnior,

Lima Nogueira

et al. 2023

Plant Soil

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Aims Leifsonia xyli subsp. xyli (Lxx) is the most common sugarcane bacterial pathogen that affects plant development and primary metabolism. For example, cysteine and methionine are sulfur-containing essential amino acids used for bacterial growth and the title of Lxx in sugarcane plants might affect sulfur metabolism. The goal of this study were to evaluate how the increase in bacterial titers affects nutritional status and sulfur metabolism in sugarcane.Methods: The study was carried out with a susceptible sugarcane (Saccharum o cinarum) genotype CB49260, with low and high Lxx titers, evaluating the mineral status and levels of primary metabolites.Results: Plants with high Lxx titers increased leaf sulfur content (S) compared to plants with low Lxx titers where plants with high Lxx titers displayed increased levels of sulfate, sucrose, maltose, ra nose, shikimic acid, malate, putrescine, glycerol, and, erythritol but decreased levels of methionine and glutathione in leaves. In the culm, plants with high Lxx titers displayed increased contents of maltose but decreased levels of threonine, ornithine, phenylalanine and myo-inositol when compared with plants with low Lxx titers.Conclusions: This study thus demonstrated that high bacterial titers increase sulfur demand in sugarcane. However, the increase in S content in the leaf did not result in higher sulfur assimilation, which was veri ed by increases sulfate level and decreases in methionine and glutathione levels. Therefore, our study showed that plant metabolism fails to meet the increased sulfur organic compound demand due to lower methionine and glutathione biosynthesis and methionine catabolism to putrescine biosynthesis in the leaves.

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Occurrence dynamics of ratoon stunting disease in various ecological sugarcane planting regions in Yunnan

Wang,

Li,

et al. 2024

Trop. plant pathol.

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Impact of the colonization of Leifsonia xyli subsp. xyli in a susceptible sugarcane genotype on water status and physiological traits

Cited by 5 publications

References 36 publications

Influence of Phoebe bournei (Hemsl.) Replanting on Soil Carbon Content and Microbial Processes in a Degraded Fir Forest

Influence of Phoebe bournei (Hemsl.) Replanting on Soil Carbon Content and Microbial Processes in a Degraded Fir Forest

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

Occurrence dynamics of ratoon stunting disease in various ecological sugarcane planting regions in Yunnan

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