Guanidine sulphate: Slow release of mineral nitrogen during incubation in soil

Zhang, Z.; Nyborg, M.; Worsley, M.; Worsley, K.M.; Gower, D.A.

doi:10.1080/00103629209368601

Cited by 6 publications

(4 citation statements)

References 12 publications

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“…9 ) 27 . However, we realize that the low catalytic efficiency of guanidinase estimated in the current study is consistent with the fact that biodegradation of guanidine in nature is such a slow process that guanidine has been commonly utilized as a slow-release fertilizer in agriculture 2 , 7 .…”

Section: Discussionsupporting

confidence: 85%

A guanidine-degrading enzyme controls genomic stability of ethylene-producing cyanobacteria

Wang

et al. 2021

Nat Commun

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Recent studies have revealed the prevalence and biological significance of guanidine metabolism in nature. However, the metabolic pathways used by microbes to degrade guanidine or mitigate its toxicity have not been widely studied. Here, via comparative proteomics and subsequent experimental validation, we demonstrate that Sll1077, previously annotated as an agmatinase enzyme in the model cyanobacterium Synechocystis sp. PCC 6803, is more likely a guanidinase as it can break down guanidine rather than agmatine into urea and ammonium. The model cyanobacterium Synechococcus elongatus PCC 7942 strain engineered to express the bacterial ethylene-forming enzyme (EFE) exhibits unstable ethylene production due to toxicity and genomic instability induced by accumulation of the EFE-byproduct guanidine. Co-expression of EFE and Sll1077 significantly enhances genomic stability and enables the resulting strain to achieve sustained high-level ethylene production. These findings expand our knowledge of natural guanidine degradation pathways and demonstrate their biotechnological application to support ethylene bioproduction.

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Section: Discussionsupporting

confidence: 85%

A guanidine-degrading enzyme controls genomic stability of ethylene-producing cyanobacteria

Wang

et al. 2021

Nat Commun

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“…Despite the practical applications of guanidine as a protein denaturant (when applied at high concentrations) 1 and as an ingredient in slow-release fertilizers 2 , little is known about the fate of guanidine in biological systems. Guanidine has been detected in human urine at concentrations of 7-13 mg L − 1 (0.12-0.22 mM) 3 , but its biosynthetic pathway remains elusive 4 .…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of cyanobacteria species reveals a novel guanidine-degrading enzyme that controls genomic stability of ethylene-producing strains

Wang¹,

Xu²,

Wang³

et al. 2021

Preprint

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Recent studies have revealed the prevalence and biological significance of guanidine metabolism in nature. However, the metabolic pathways used by microbes to degrade guanidine or mitigate its toxicity have not been widely studied. Here we report a novel guanidine-degrading enzyme, Sll1077, identified in the model cyanobacterium Synechocystis sp. PCC 6803 through comparative proteomics and subsequent experimental validation. Although previously annotated as an agmatinase enzyme, Sll1077 is more likely a “guanidinase”, because it degrades guanidine rather than agmatine to urea. We demonstrate that the model cyanobacterium Synechococcus elongatus PCC 7942 strain engineered to express the bacterial ethylene-forming enzyme (EFE) exhibits unstable ethylene production due to toxicity and genomic instability induced by accumulation of the EFE-byproduct guanidine. Co-expression of EFE and Sll1077 significantly enhanced genomic stability and enabled the resulting strain to achieve sustained high-level ethylene production. These findings expand our knowledge of natural guanidine degradation pathways and demonstrate their biotechnological application to support ethylene bioproduction.

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“…The application of silver nanoparticles has also resulted in an increase in carotenoid and phenolic content, as well as total antioxidant capacity in oakleaf lettuce, at a concentration of 40 ppm [22]. Application of guanidine, which has also proved to be an efficient slow-release nitrogen fertilizer, reduces nitrogen loss and improves nitrogen nutrition [23]. However, the optimization of parameters and concentrations is essential to avoid phytotoxicity.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Serendipita indica and Guanidine-Modified Nanomaterial on Growth and Development of Cabbage Seedlings and Black Spot Infestation

et al. 2021

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To ensure sustainable agricultural production and protection of crops from various biotic and abiotic stresses, while keeping in view environmental protection, by minimal usage of chemicals, the exploitation of beneficial microorganisms and modern nanotechnologies in the field of agriculture is of paramount importance. This study aimed to investigate the effects of Serendipita indica and guanidine-modified nanomaterial on the growth, and other selected parameters, of cabbage, as well as incidence of black spot disease. S. indica was applied in substrate and by seed inoculation. S. indica had a positive impact on the development of plants, and resulted in reduced black spot severity. The maximum plant height (119 mm) and number of leaves (8.3) were observed in S. indica-treated plants. Pigments were enhanced, i.e., chlorophyll a (0.79 mg/g), chlorophyll b (0.22 mg/g), and carotenoid content (0.79 mg/g), by substrate treatment. The highest antioxidant capacity (9.5 mM/L), chlorophyll a and b (1.8 and 0.6 mg/g), and carotenoid content (1.8 mg/L) were reported in S. indica seed treatment. S. indica treatment resulted in 59% and 41% disease incidence decrease in substrate and seed treatment, respectively. Guanidine-modified nanomaterial was seen to be effective in improving plant growth and reducing disease incidence; however, it did not perform better than S. indica. Application of nanoparticles resulted in enhanced normalized difference vegetation index and fluorescence by increasing chlorophyll a, b, and carotenoid content. Nitrogen content was the highest in plants treated with nanoparticles. However, the effect of the combined application of fungus and nanoparticles was similar to that of S. indica alone in substrate treatment, although negative impacts were reported in the biochemical parameters of cabbage. S. indica has great potential to enhance plant growth and manage Alternaria incidence in cabbage crops.

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Guanidine sulphate: Slow release of mineral nitrogen during incubation in soil

Cited by 6 publications

References 12 publications

A guanidine-degrading enzyme controls genomic stability of ethylene-producing cyanobacteria

A guanidine-degrading enzyme controls genomic stability of ethylene-producing cyanobacteria

Comparative analysis of cyanobacteria species reveals a novel guanidine-degrading enzyme that controls genomic stability of ethylene-producing strains

The Effects of Serendipita indica and Guanidine-Modified Nanomaterial on Growth and Development of Cabbage Seedlings and Black Spot Infestation

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