Phenolic Compounds as a Cause of Phytotoxicity in Greenhouse Substrates Repeatedly Used in Cucumber Growing

Politycka, Barbara; Wójcik-Wojtkowiak, D.; Pudelski, T.

doi:10.17660/actahortic.1985.156.13

Cited by 18 publications

(12 citation statements)

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“…Total polyphenols are relatively high in FPR and LPR extracts in comparison to BSG extract. Total polyphenols are known to have germination inhibitor effect [40].…”

Section: Seed Germination Bioassays For Optimum Solvent Extraction Ramentioning

confidence: 99%

Extraction and characterization of bio-effectors from agro-food processing by-products as plant growth promoters

Chami

Alwanney

Pascali

et al. 2014

Chem. Biol. Technol. Agric.

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Background: Recently, a novel concept 'bio-effectors' rose on to describe a group of products that are able to improve plant performance rather than fertilizers. Agro-food processing residues and by-products potentially represent important sources of bio-effectors but they are currently not properly taken in consideration. To fulfill this gap, in these study, three food processing by-products: (i) brewers' spent grain, (ii) fennel processing residues, and (iii) lemon processing residues were chosen as bio-effector candidates. Raw materials were chemically characterized, and green extraction methodology was optimized by using water, ethanol, and their mixture based on the extraction yields. Aqueous extracts were used for seed germination bioassays on Lepidium sativum seeds to evaluate their potential bioactivities. Thereafter, the extracts were chemically characterized and metabolites were detected by 1D and 2D NMR spectroscopy. Results: Results are summarized as follows: (i) raw materials showed an interesting nutritional content; (ii) aqueous extraction resulted higher yield more than other used solvent; (iii) at high solvent extraction ratio, aqueous extracts were not phytotoxic but enhanced seed germination and root elongation; (iv) all aqueous extracts are differently rich in nutrients, amino-acids, sugars, and other low molecular weight molecule compounds.

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“…Total polyphenols are relatively high in FPR and LPR extracts in comparison to BSG extract. Total polyphenols are known to have germination inhibitor effect [40].…”

Section: Seed Germination Bioassays For Optimum Solvent Extraction Ramentioning

confidence: 99%

Extraction and characterization of bio-effectors from agro-food processing by-products as plant growth promoters

Chami

Alwanney

Pascali

et al. 2014

Chem. Biol. Technol. Agric.

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“…During prolonged use of the same substrate in cucumber cultivation under glasshouse conditions, phytotoxic phenolic compounds accumulate (Politycka et al, 1984;Pudelski et al, 1982). Decaying crop residues of cucumber are their source.…”

Section: Introductionmentioning

confidence: 99%

“…In the substrate seven phenolic acids were identified: ferulic, p-hydroxybenzoic, p-coumaric, protocatechuic, salicylic, syringic and vanillic (Politycka et al, 1984). It is known that simple phenolic compounds, which are toxic to plants, do not occur in high concentration in their free form in actively metabolising tissues, but are present in bound form as esters or glucosides.…”

Section: Introductionmentioning

confidence: 99%

Response of sweet pepper to phenols accumulated in greenhouse substrate

Politycka

Wójcik-Wojtkowiak

1991

Plant Soil

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Prolonged cucumber cultivation in the same substrates leads to accumulation of phytotoxic phenolic compounds. Introduction of sweet pepper as an aftercrop eliminates substrate phytotoxicity.The aim of the study was to examine whether in sweet pepper detoxication of substrate phenols occurs by means of the glucosylation process. The examined materials were substrates differing in phytotoxicity level, and sweet pepper plants grown on these substrates. Substrate phytotoxicity was obtained by means of either repeated cucumber cultivation or by phenolic acid addition. During the vegetative growth phase of sweet pepper, the phytotoxicity and phenolic compound levels in the substrate, and the glucosylated phenol contents in above-ground plant parts were determined.Results showed that sweet pepper responds to an increased presence of phenols in the substrate by an intensified glucosylation.

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“…Phenolic compounds can accumulate in the soil after continuous cropping of cucumber and have detrimental effects on cucumber growth Matsui 1994, Zhou et al 2012). Syringic acid (SA) was identified in the cucumber-cultivated peat-bark substrate (Politycka et al 1984) and soils under cucumber . Here, we focused on the effects of SA on whole rhizosphere microbial communities.…”

mentioning

confidence: 99%

Syringic acid inhibited cucumber seedling growth and changed rhizosphere microbial communities

Zhou¹,

Wu²,

Xiang³

2014

PLANT SOIL ENVIRON

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Phenolic compounds enter soil as a result of root exudation and plant residue decomposition, but their impacts on soil microbial communities are poorly understood. In this experiment, effects of syringic acid on cucumber rhizosphere microbial communities were evaluated. Rhizosphere bacterial and fungal community structures and abundances were analyzed with PCR-denaturing gradient gel electrophoresis (DGGE) and quantitative PCR, respectively. Results showed that syringic acid inhibited cucumber seedling growth at concentrations of 0.05 to 0.2 μmol/g soil, and increased rhizosphere soil dehydrogenase activity, microbial biomass carbon content, bacterial 16S rRNA gene and fungal ITS rRNA gene densities, and decreased the bacteria-to-fungi ratio at concentrations of 0.02 to 0.2 μmol/g soil. Syringic acid also changed rhizosphere bacterial and fungal community structures: it decreased the richness, evenness, and diversity indices of rhizosphere bacterial community but had no significant influences on that of fungal community, indicating that syringic acid had different influence on bacterial and fungal communities. Taken together, these results showed that syringic acid inhibited cucumber growth and altered rhizosphere microbial communities, suggesting that syringic acid plays some role in the communication between plants and soil microorganisms.

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Phenolic Compounds as a Cause of Phytotoxicity in Greenhouse Substrates Repeatedly Used in Cucumber Growing

Cited by 18 publications

References 0 publications

Extraction and characterization of bio-effectors from agro-food processing by-products as plant growth promoters

Extraction and characterization of bio-effectors from agro-food processing by-products as plant growth promoters

Response of sweet pepper to phenols accumulated in greenhouse substrate

Syringic acid inhibited cucumber seedling growth and changed rhizosphere microbial communities

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