Silicon impacts on soil microflora under Ralstonia Solanacearum inoculation

Lin, Weipeng; Jiang, Ni-Hao; Li, Peng; Fan, Xueying; Gao, Yang; Wang, Guoping; Cai, Kunzheng

doi:10.1016/s2095-3119(18)62122-7

Cited by 19 publications

(14 citation statements)

References 89 publications

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“…These findings may suggest that OC input is the most important factor that influences microbial communities after straw return, partly driving Si mobility by changing the transformation of different Si forms. Third, straw is also rich in Si, except for the input of C and N. A previous study (Lin et al, 2020) reported that 63.7% of total bacterial OTUs were regulated by Si source addition regardless of the presence of plants, suggesting that Si source had a direct effect on soil microorganisms. Most interestingly, according to RDA combined with VPA analysis to assess the effects of Si sources on soil bacterial community, Si source was closely related to the soil microbial community (Fig.…”

Section: 3mentioning

confidence: 95%

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Song

Liao

et al. 2021

Soil Ecol. Lett.

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Returning crop straw into the soil is an important practice to balance biogenic and bioavailable silicon (Si) pool in paddy, which is crucial for the healthy growth of rice. However, owing to little knowledge about soil microbial communities responsible for straw degradation, how straw return affects Si bioavailability, its uptake, and rice yield remains elusive. Herein, we investigate the change of soil Si fractions and microbial community in a 39-year-old paddy field amended by a long-term straw return. Results show that rice straw return significantly increased soil bioavailable Si and rice yield from 29.9% to 61.6% and from 14.5% to 23.6%, respectively, when compared to NPK fertilization alone. Straw return significantly altered soil microbial community abundance. Acidobacteria was positively and significantly related to amorphous Si, while Rokubacteria at phylum level, Deltaproteobacteria, and Holophagae at class level was negatively and significantly related to organic matter adsorbed and Fe/Mn-oxide-combined Si in soils. Redundancy analysis of their correlations further demonstrated that Si status significantly explained 12% of soil bacterial community variation. These findings suggest that soil bacteria community and diversity interact with Si mobility by altering its transformation, thus resulting in the balance of various nutrient sources to drive biological Si cycle in agroecosystem.

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Section: 3mentioning

confidence: 95%

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Song

Liao

et al. 2021

Soil Ecol. Lett.

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“…Sucrose is an easily available carbon source for soil microbes [69]. Our group and others have reported that Si-mediated tomato resistance against R. solanacearum is associated with the modification of the rhizosphere microbial community structure [23,24,70]. In the study by Gu et al [71] found that five sugars (sucrose, melibiose, etc.)…”

Section: Discussionmentioning

confidence: 99%

“…A recent study showed that the expression of ethylene (ET) and jasmonic acid (JA) dependent genes (JERF3, TSRF1 and ACCO) was induced by exogenous Si in the soil culture system, and suggested that ET and JA pathways may participate in Si-induced tomato bacterial wilt resistance, but the authors have not ruled out a role of salicylic acid (SA) [8]. Recently, our group reported that Si-modulated phenolic compound metabolism in roots or root exudates, and that Si could significantly influence soil microbial community component in rhizosphere soil of Si-treated tomato plants infected with R. solanacearum [23,24]. To date, despite an increase in researches on the underlying mechanism of Si-induced tomato resistance against R. solanacearum, the exact mechanism still remains enigmatic [9,12,23,25].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, our group reported that Si-modulated phenolic compound metabolism in roots or root exudates, and that Si could significantly influence soil microbial community component in rhizosphere soil of Si-treated tomato plants infected with R. solanacearum [23,24]. To date, despite an increase in researches on the underlying mechanism of Si-induced tomato resistance against R. solanacearum, the exact mechanism still remains enigmatic [9,12,23,25]. Currently, limited mechanism investigation mainly focuses on the stems' responses to R. solanacearum [8,9,23,25].…”

Section: Introductionmentioning

confidence: 99%

“…To date, despite an increase in researches on the underlying mechanism of Si-induced tomato resistance against R. solanacearum, the exact mechanism still remains enigmatic [9,12,23,25]. Currently, limited mechanism investigation mainly focuses on the stems' responses to R. solanacearum [8,9,23,25]. However, the fact is that R. solanacearum naturally infects plants through root wounds [6][7][8], and tomato roots have an immune system that functions to protect the plant against R. solanacearum [26], and Si mainly accumulated in tomato roots [9,23,27].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Combined Application of Potassium Silicate and Salicylic Acid on the Defense Response of Hydroponically Grown Tomato Plants to Ralstonia solanacearum Infection

Jiang

Zhang

2021

Sustainability

Self Cite

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Bacterial wilt, caused by soilborne pathogenic bacterium Ralstonia solanacearum, is a serious and widespread disease that affects global tomato production. Both silicon (Si) and salicylic acid (SA) play important roles in enhancing tomato resistance against bacterial wilt, however, their combined effects on the defense responses of infected tomato plants remain unknown. Hence, the combined effects of Si and SA on physiological and biochemical parameters of R. solanacearum-infected tomato plants were investigated. The combination treatment of Si and SA significantly decreased disease incidences, lipoxygenase (LOX) activity and ethylene (ET) production. The combined treatments were more prominent in improving the morphological traits of root systems, such as root length, root surface area, average root diameter and root volume. The activities of polyphenol oxidase (PPO) and peroxidase (POD) and the concentrations of total soluble phenolics (TSPs) and lignin-thioglycolic acid (LTGA) derivatives were significantly increased in the plants with combined treatments. Si in combination with SA could significantly enhance neutral invertase (NI) and acid invertases (AI) activities in the leaves of tomato plants at 3 days post-infection (dpi) compared with application of Si alone. Three defense-related genes, PAL, POD and pathogenesis-related protein 1 (PR1), were significantly induced in Si+SA treatment at 7 dpi when compared with individual application of Si or SA. The expression level of salicylic acid-binding protein 2 (SABP2) was significantly higher for combination treatment when compared with treatment of Si or SA alone. The possible mechanisms involved in the synergistic effects of Si and SA on the control of tomato bacterial wilt were proposed. This study indicates that under hypertonic conditions, the combined application of 2.0 mM potassium silicate (K2SiO3) and 0.5 mM SA had a synergistic effect on the control of tomato bacterial wilt.

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Silicon application influences the prokaryotic communities in the rhizosphere of sugarcane genotypes

Leite

Neto

Dutra

et al. 2023

Applied Soil Ecology

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Silicon impacts on soil microflora under Ralstonia Solanacearum inoculation

Cited by 19 publications

References 89 publications

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Soil bacterial communities interact with silicon fraction transformation and promote rice yield after long-term straw return

Effects of Combined Application of Potassium Silicate and Salicylic Acid on the Defense Response of Hydroponically Grown Tomato Plants to Ralstonia solanacearum Infection

Silicon application influences the prokaryotic communities in the rhizosphere of sugarcane genotypes

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