Silicon improves the photosynthetic performance of black pepper plants inoculated with Fusarium solani f. sp. piperis

D’Addazio, Verônica; Silva, J.V.G.; Jardim, A.S.; Longue, Lana Lírio; Santos, Renata Aparecida Ahnert dos; Fernandes, Adriano A.; Silva, M.B.; Silva, D.M.; Santos, T. A. dos; Schmildt, Edílson Romais; Pfenning, Ludwig H.; Falqueto, Antelmo Ralph

doi:10.32615/ps.2019.182

Cited by 14 publications

(6 citation statements)

References 59 publications

(54 reference statements)

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“…Fusarium infection also alters physiological responses and reduces stomatal conductance and transpiration in tomato plants, while application of PBE-1 enhances transpiration and stomatal conductance during Fusarium infection, as the xylem responsible for the passage of water is not blocked. Fernandes et al (2020) also reported that Fusarium infection results in reduce gs and transpiration.…”

Section: Discussionmentioning

confidence: 92%

Bacillus tequilensis influences metabolite production in tomato and restores soil microbial diversity during Fusarium oxysporum infection

Bhattacharya,

Chauhan,

Singh

et al. 2024

Plant Biol J

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This study evaluates cellular damage, metabolite profiling, and defence‐related gene expression in tomato plants and soil microflora during Fusarium wilt disease after treatment with B. tequilensis PBE‐1. Histochemical analysis showed that PBE‐1 was the primary line of defence through lignin deposition and reduced cell damage. GC–MS revealed that PBE‐1 treatment ameliorated stress caused by F. oxysporum infection. PBE‐1 also improved transpiration, photosynthesis, and stomatal conductance in tomato. qRT‐PCR suggested that the defence‐related genes FLS2, SERK, NOS, WRKYT, NHO, SAUR, and MYC2, which spread infection, were highly upregulated during F. oxysporum infection, but either downregulated or expressed normally in PBE‐1 + P treated plants. This indicates that the plant not only perceives the bio‐control agent as a non‐pathogen entity but its presence in normal metabolism and gene expression within the host plant is maintained. The study further corroborated findings that application of PBE‐1 does not cause ecological disturbances in the rhizosphere. Activity of soil microflora across four treatments, measured by Average Well Colour Development (AWCD), showed continuous increases from weeks 1 to 4 post-pathogen infection, with distinct substrate usage patterns like tannic and fumaric acids impacting microbial energy source utilization and diversity. Principal Component Analysis (PCA) and diversity indices like McIntosh, Shannon, and Simpson further illustrated significant microbial community shifts over the study period. In conclusion, our findings demonstrate that B. tequilensis PBE‐1 is an ideal bio‐agent for field application during Fusarium wilt disease management in tomato.

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Section: Discussionmentioning

confidence: 92%

Bacillus tequilensis influences metabolite production in tomato and restores soil microbial diversity during Fusarium oxysporum infection

Bhattacharya,

Chauhan,

Singh

et al. 2024

Plant Biol J

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“…Photosynthetic performances were enhanced by the application of a Si supplement to dicot plants such as black pepper where it reduced disease severity and improved resistance to Fusarium solani f. sp. piperis (D'Addazio et al, 2020). Furthermore, Si application alleviated water stress by modulating some photosynthesis‐related genes, regulating the photochemical process and reducing the effects of iron toxicity (dos Santos et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 95%

Silicon mediates the changes in physiological performance, nutrient uptake, root colonization morphology and secondary metabolite activity in rubber rootstock seedlings (Hevea brasiliensis) inoculated with Rigidoporus microporus

et al. 2022

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White root disease (WRD) of rubber, caused by Rigidoporus microporus, is a severe soilborne disease in rubber plantations. Although several studies have addressed the potential use of silicon (Si) to combat plant diseases, the exact mechanisms underlying Si-improved physiological performance and resistance to WRD in rubber rootstock seedlings are still unknown. This study evaluated the effect of soluble Si supplementation in controlling R. microporus on 13-month-old rubber rootstock seedlings of clones RRIM 2002 and RRIM 2024. The application of soluble Si twice a month on the RRIM 2002 clone increased the relative chlorophyll content, photosynthesis rate, stomatal conductance and transpiration rate to 55.0%, 179.0%, 277.8% and 173.0% higher, respectively, than untreated seedlings 9 months postinoculation with R. microporus. Soluble Si supplementation reduced the disease by 55.0%, compared to only 25.6% disease reduction on rubber rootstock seedlings treated with propiconazole.The application of soluble Si enhanced the accumulation of Si and the production of total phenolic compounds (TPCs) in the rubber rootstock seedling roots by 40% and 25%, respectively, compared to untreated seedlings 9 months postinoculation with R. microporus. Based on scanning electron microscopy observations, the root tissue of rubber rootstock seedlings treated with soluble Si showed the absence of R. microporus hyphae, and the accumulation of Si granules was observed. Thus, this work proved that soluble Si in the form of silicic acid shows promising results as an alternative fertilizer in controlling WRD.

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“…Changes in leaf photochemistry and carbon metabolism are often associated with the lower activity of Rubisco and changes in the capacity for regeneration of ribulose-1,5-bisphosphate (Hiscox and Israelstam, 1979). The reduction in Rubisco's activity has also been reported in plants infested with pathogens (Dꞌaddazio et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

The role of iron on the growth and development of the seedlings of Rhizophora mangle L.

Barcelos¹,

Andreia²,

Adriano³

et al. 2022

Sci. Res. Essays

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Iron is an essential element, and its deficiency and excess result in negative effects on the growth and physiology of plants. Heavy metals are the highest anthropic pollutants that affect mangrove ecosystem. This study aimed to analyze the development of Rhizophora mangle seedlings in response to excess Fe under controlled conditions. Seedlings of R. mangle previously established were transferred to the culture substrate containing 45 (Control), 135, 225, 270, and 315 µmol L -1 of Fe. The propagules were cultivated for 270 days and during this period the epicotyl length and leaf production were evaluated. At the end of the experiment, the epicotyl length, growth rate, and gas exchange of the seedlings were calculated in the different treatments and the quantification of Fe in the aerial part and root of the seedlings were performed. The excess of Fe led to lower incorporation of biomass, mainly affecting leaf production in the treatment with 315 µmol L -1 . A reduction was observed in the assimilation of carbon, also a reduction in stomatal conductance in the highest concentrations of the metal. The excess of Fe in the cultivation solution increased its concentration in the seedlings biomass, with the roots being principally responsible for the bioaccumulation. Although R. mangle plants showed clear signs of stress to excess Fe, they also have a strong capacity for bioaccumulation and tolerance.

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Silicon improves the photosynthetic performance of black pepper plants inoculated with Fusarium solani f. sp. piperis

Cited by 14 publications

References 59 publications

Bacillus tequilensis influences metabolite production in tomato and restores soil microbial diversity during Fusarium oxysporum infection

Bacillus tequilensis influences metabolite production in tomato and restores soil microbial diversity during Fusarium oxysporum infection

Silicon mediates the changes in physiological performance, nutrient uptake, root colonization morphology and secondary metabolite activity in rubber rootstock seedlings (Hevea brasiliensis) inoculated with Rigidoporus microporus

The role of iron on the growth and development of the seedlings of Rhizophora mangle L.

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