Fulvic acid-induced disease resistance to Botrytis cinerea in table grapes may be mediated by regulating phenylpropanoid metabolism

Xu, Dandan; Deng, Yuewen; Xi, Pinggen; Yu, Ge; Wang, Qi; Zeng, Qingqian; Jiang, Zide; Gao, Lingwang

doi:10.1016/j.foodchem.2019.02.015

Cited by 70 publications

(36 citation statements)

References 36 publications

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“…Plant activators that can induce defense response have attracted increasing attentions due to their potentials in controlling plant diseases whilst reducing the environmental burdens. Their action mechanisms can activate a complex signaling network, including the pathways regulated by SA, ET, JA, etc [19]. In our study, we further investigated whether γ-PGA could trigger resistance against the pathogens infection in plants.…”

Section: Discussionmentioning

confidence: 98%

“…FA is an important component of organic matters in soil, which can in uence plant growth and microorganism activity [15,16]. Otherwise, FA has e cacy in controlling several plant diseases and protecting plants against abiotic stresses [15,[17][18][19]. However, application of FA powder can lead to the soil acidi cation because it contains organic acids.…”

Section: Introductionmentioning

confidence: 99%

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Bioconversion of poly-γ-glutamic acid (γ-PGA) from fulvic acid powder produced from the wastewater of yeast molasses fermentation

Li¹,

Wang²,

Ke³

et al. 2020

Preprint

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Background: Molasses is a wildly used feedstock for fermentation, but it poses a severe wastewater-disposal problem worldwide. Recently, the wastewater produced by yeast during molasses fermentation is being processed into fulvic acid (FA) powder as a fertilizer for crops, but it consequently induces a problem of soil acidification after being directly applied in soil. In this study, the low-cost FA powder was bioconverted into a value-added product, γ-PGA, by a glutamate independent producer, Bacillus velezensis GJ11. Results: With FA powder, the substrates of sodium glutamate and citrate sodium used in medium were decreased around one third. Moreover, FA powder could completely substitute Mg2+, Mn2+, Ca2+ and Fe3+ in the fermentation medium. In the optimized FA powder fermentation medium, the γ-PGA was produced with its maximum concentration at 42.55 g/L and a productivity of 1.15 g/(L·h), while only 2.87 g/L was produced in the medium without FA powder. Hydrolyzed γ-PGA could trigger induced systemic resistance (ISR), e.g. H2O2 accumulation and callose deposition, against the pathogen infection in plants. Further investigations found that the ISR triggered by γ-PGA hydrolyzates was dependent on the ethylene signalling and NPR1. Conclusions: To our knowledge, this is the first report of using the industry waste, FA powder, as a sustainable substrate for the microbial synthesis of γ-PGA. This bioprocess can not only develop a new way of FA powder as a cheap feedstock for producing γ-PGA, but also help to reduce pollution from the wastewater of yeast molasses fermentation.

show abstract

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Bioconversion of poly-γ-glutamic acid (γ-PGA) from fulvic acid powder produced from the wastewater of yeast molasses fermentation

Li¹,

Wang²,

Ke³

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Their action mechanisms can activate a complex signalling network, including the pathways regulated by salicylic acid (SA), ethylene (ET), jasmonic acid (JA), etc [19]. In this study, we investigated whether γ-PGA could trigger resistance against the pathogens infection in plants.…”

Section: Discussionmentioning

confidence: 99%

“…Thereby, processing wastewater into FA powder is favorable for reducing the pollution from molasses fermentation. Moreover, the FA powder is rich in FA (> 45%) as well as other nutrients, such as N (> 3%), P (> 0.5%), K (> 12%), and amino acids (> 6%), so it can be used as a fertilizer for crops via promoting plant growth and microorganism activity, controlling plant diseases and protecting plants against abiotic stresses [15][16][17][18][19]. However, excessive application of FA powder can lead to soil acidi cation because it contains a lot of organic acids.…”

Section: Introductionmentioning

confidence: 99%

Microbial synthesis of poly- γ -glutamic acid ( γ -PGA) with fulvic acid powder, the waste from yeast molasses fermentation

Wang

Liu

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: Molasses is a wildly used feedstock for fermentation, but it also poses a severe wastewater-disposal problem worldwide. Recently, the wastewater from yeast molasses fermentation is being processed into fulvic acid (FA) powder as a fertilizer for crops, but it consequently induces a problem of soil acidification after being directly applied into soil. In this study, the low-cost FA powder was bioconverted into a value-added product of γ-PGA by a glutamate independent producer of Bacillus velezensis GJ11.Results: FA power could partially substitute the high-cost substrates such as sodium glutamate and citrate sodium for producing γ-PGA. With FA powder in the fermentation medium, the amount of sodium glutamate and citrate sodium used for producing γ-PGA were both decreased around one third. Moreover, FA powder could completely substitute Mg2+, Mn2+, Ca2+ and Fe3+ in the fermentation medium for producing γ-PGA. In the optimized medium with FA powder, the γ-PGA was produced at 42.55 g/L with a productivity of 1.15 g/(L·h), while only 2.87 g/L was produced in the medium without FA powder. Hydrolyzed γ-PGA could trigger induced systemic resistance (ISR), e.g. H2O2 accumulation and callose deposition, against the pathogen’s infection in plants. Further investigations found the ISR triggered by γ-PGA hydrolysates was dependent on the ethylene (ET) signalling and nonexpressor of pathogenesis-related proteins 1 (NPR1). Conclusions: To our knowledge, this is the first report to use the industry waste, FA powder, as a sustainable substrate for microbial synthesis of γ-PGA. This bioprocess can not only develop a new way to use FA powder as a cheap feedstock for producing γ-PGA, but also help to reduce pollution from the wastewater of yeast molasses fermentation.

show abstract

“…Thereby, processing wastewater into FA powder is favorable for reducing the pollution from molasses fermentation. Moreover, the FA powder is rich in FA (> 45%) as well as other nutrients, such as N (> 3%), P (> 0.5%), K (> 12%), and amino acids (> 6%), so it can be used as a fertilizer for crops via promoting plant growth and microorganism activity, controlling plant diseases, and protecting plants against abiotic stresses [ 15 – 19 ]. However, excessive application of FA powder can lead to soil acidification, because it contains a lot of organic acids.…”

Section: Introductionmentioning

confidence: 99%

Microbial synthesis of poly-γ-glutamic acid (γ-PGA) with fulvic acid powder, the waste from yeast molasses fermentation

Wang

Liu

et al. 2020

Biotechnol Biofuels

View full text Add to dashboard Cite

Background Molasses is a wildly used feedstock for fermentation, but it also poses a severe wastewater-disposal problem worldwide. Recently, the wastewater from yeast molasses fermentation is being processed into fulvic acid (FA) powder as a fertilizer for crops, but it consequently induces a problem of soil acidification after being directly applied into soil. In this study, the low-cost FA powder was bioconverted into a value-added product of γ-PGA by a glutamate-independent producer of Bacillus velezensis GJ11. Results FA power could partially substitute the high-cost substrates such as sodium glutamate and citrate sodium for producing γ-PGA. With FA powder in the fermentation medium, the amount of sodium glutamate and citrate sodium used for producing γ-PGA were both decreased around one-third. Moreover, FA powder could completely substitute Mg2+, Mn2+, Ca2+, and Fe3+ in the fermentation medium for producing γ-PGA. In the optimized medium with FA powder, the γ-PGA was produced at 42.55 g/L with a productivity of 1.15 g/(L·h), while only 2.87 g/L was produced in the medium without FA powder. Hydrolyzed γ-PGA could trigger induced systemic resistance (ISR), e.g., H2O2 accumulation and callose deposition, against the pathogen’s infection in plants. Further investigations found that the ISR triggered by γ-PGA hydrolysates was dependent on the ethylene (ET) signaling and nonexpressor of pathogenesis-related proteins 1 (NPR1). Conclusions To our knowledge, this is the first report to use the industry waste, FA powder, as a sustainable substrate for microbial synthesis of γ-PGA. This bioprocess can not only develop a new way to use FA powder as a cheap feedstock for producing γ-PGA, but also help to reduce pollution from the wastewater of yeast molasses fermentation.

show abstract

Fulvic acid-induced disease resistance to Botrytis cinerea in table grapes may be mediated by regulating phenylpropanoid metabolism

Cited by 70 publications

References 36 publications

Bioconversion of poly-γ-glutamic acid (γ-PGA) from fulvic acid powder produced from the wastewater of yeast molasses fermentation

Bioconversion of poly-γ-glutamic acid (γ-PGA) from fulvic acid powder produced from the wastewater of yeast molasses fermentation

Microbial synthesis of poly- γ -glutamic acid ( γ -PGA) with fulvic acid powder, the waste from yeast molasses fermentation

Microbial synthesis of poly-γ-glutamic acid (γ-PGA) with fulvic acid powder, the waste from yeast molasses fermentation

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