Plant growth and phenolic compounds in the rhizosphere soil of wild oat (Avena fatua L.)

Iannucci, Anna; Fragasso, Mariagiovanna; Platani, Cristiano; Papa, Roberto

doi:10.3389/fpls.2013.00509

Cited by 51 publications

(45 citation statements)

References 31 publications

(37 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This includes five-cyclic triterpenic glycosides represented by avenacin A1 extracted from oats. It has shown a moderate inhibitory effect against the fungus Candida albicans [30][31][32][33]. This finding was partly confirmed in the present research, in which the growth inhibition for F. oxysporum, F. culmorum, and some of the weed species treated with the root extract obtained from A. fatua was proven.…”

Section: Tabsupporting

confidence: 85%

The effect of plant extracts from Solanum nigrum L. and Avena fatua L. on the growth of some weed species and agropathogenic fungi

et al. 2018

View full text Add to dashboard Cite

Experiments to evaluate 40% and 80% methanol extracts prepared from the aboveground parts of two Solanum nigrum biotypes and from the roots of two Avena sativa biotypes were used to test the growth and development of some weed species and agropathogens. The species collected from different crop fields were Viola arvensis, Chenopodium album, Stellaria media, Papaver rhoeas, and Thlaspi arvense together with the pathogenic fungi Fusarium avenaceum, F. culmorum, and F. oxysporum. Plant morphological changes and significant fresh weight reduction of Viola arvensis were observed when treated with both 40% and 80% extracts. A similar response was found in C. album, but only when plants were treated with an 80% extract obtained from plants of S. nigrum collected from a maize field. The most susceptible to both extracts from A. fatua roots growing in a spring wheat field were C. album and S. media, whereas V. arvensis was only susceptible to the 80% extract. The addition of the extracts obtained from A. fatua to PDA medium at concentrations of 0.1% and 1% contributed to significant reductions in the mycelium growth of all three Fusarium species. The extract obtained from S. nigrum added to PDA medium at 1% concentration slightly stimulated mycelium growth of F. oxysporum.

show abstract

Section: Tabsupporting

confidence: 85%

The effect of plant extracts from Solanum nigrum L. and Avena fatua L. on the growth of some weed species and agropathogenic fungi

et al. 2018

View full text Add to dashboard Cite

show abstract

“…A key factor to be considered in the study of sequential aromatic catabolism is the component amounts in the mixtures of AC, since the utilization profile would be substrate concentration dependent. In this bacterium, the identified preferences were observed in a range of concentrations higher than those that can be found in most natural, nonpolluted environments (35)(36)(37)(38). However, it is still possible that preference also takes place at lower concentrations and that the utilized growth and degradation tests do not have enough resolution to detect it.…”

Section: Figmentioning

confidence: 93%

Hierarchy of Carbon Source Utilization in Soil Bacteria: Hegemonic Preference for Benzoate in Complex Aromatic Compound Mixtures Degraded by Cupriavidus pinatubonensis Strain JMP134

Pérez‐Pantoja

Leiva-Novoa

Donoso

et al. 2015

Appl Environ Microbiol

View full text Add to dashboard Cite

cCupriavidus pinatubonensis JMP134, like many other environmental bacteria, uses a range of aromatic compounds as carbon sources. Previous reports have shown a preference for benzoate when this bacterium grows on binary mixtures composed of this aromatic compound and 4-hydroxybenzoate or phenol. However, this observation has not been extended to other aromatic mixtures resembling a more archetypal context. We carried out a systematic study on the substrate preference of C. pinatubonensis JMP134 growing on representative aromatic compounds channeled through different catabolic pathways described in aerobic bacteria. Growth tests of nearly the entire set of binary combinations and in mixtures composed of 5 or 6 aromatic components showed that benzoate and phenol were always the preferred and deferred growth substrates, respectively. This pattern was supported by kinetic analyses that showed shorter times to initiate consumption of benzoate in aromatic compound mixtures. Gene expression analysis by real-time reverse transcription-PCR (RT-PCR) showed that, in all mixtures, the repression by benzoate over other catabolic pathways was exerted mainly at the transcriptional level. Additionally, inhibition of benzoate catabolism suggests that its multiple repressive actions are not mediated by a sole mechanism, as suggested by dissimilar requirements of benzoate degradation for effective repression in different aromatic compound mixtures. The hegemonic preference for benzoate over multiple aromatic carbon sources is not explained on the basis of growth rate and/or biomass yield on each single substrate or by obvious chemical or metabolic properties of these aromatic compounds.A romatic compounds (AC) are widespread in the environment, displaying a heterogeneous structural diversity. They can be naturally originated by biotic and abiotic processes or released as pollutants into the environment. AC primarily can be found as aromatic amino acids, secondary products abundantly generated by plants, structural components of the very complex lignin heteropolymer in woody plants, and xenobiotic compounds: biocides, industrial by-products, and petroleum derivatives, among others. Microorganisms may degrade hundreds of different AC using specialized biochemical pathways that allow them to grow on these carbon sources (1-3). Typically, bacteria deal with AC as part of complex mixtures in naturally occurring organic compounds, such as those found in plant exudates (4), in soils (5), and even in dissolved organic matter from freshwater and seawater (6). Therefore, microorganisms are concurrently exposed to several structurally heterogeneous AC as potential substrates, which raises the question of whether the components of these mixtures are used simultaneously or in a sequential manner. In the case of the sequential utilization pattern, characterized by diauxic growth, one compound inhibits degradation of the other by exerting metabolite toxicity (7), competitive inhibition of enzymes (8, 9), depletion of electron acceptors (10, 11),...

show abstract

“…During this period, wheat is, generally, at the booting and heading stage depending on the genotype [41]. Iannucci et al also reported that the concentration of phenolic compounds in the rhizosphere soil of wild oat (Avena fatua) varied with the age of the plant [42]. A sharp decline in phenolic compounds has been reported in that study during stem elongation and early booting stage [42].…”

Section: Discussionmentioning

confidence: 63%

“…Iannucci et al also reported that the concentration of phenolic compounds in the rhizosphere soil of wild oat (Avena fatua) varied with the age of the plant [42]. A sharp decline in phenolic compounds has been reported in that study during stem elongation and early booting stage [42]. However, the total phenol content at 6 weeks PNI in inoculated treatments for both resistant and susceptible genotypes did not decline, contrary to the non-inoculated treatments.…”

Section: Discussionmentioning

confidence: 63%

Constitutive and Induced Expression of Total Phenol and Phenol Oxidases in Wheat Genotypes Ranging in Resistance/Susceptibility to the Root-Lesion Nematode Pratylenchus thornei

Rahaman

Zwart

Thompson

2020

Plants

View full text Add to dashboard Cite

Plant-derived phenolic compounds contribute to the defense against various pathogens, including root-lesion nematodes (Pratylenchus spp.). However, there are no reports on the role of phenolic compounds in wheat (Triticum aestivum) against Pratylenchus thornei. In this study, wheat genotypes ranging from resistant to very susceptible to P. thornei were used to investigate the level of total phenols and phenol oxidases, polyphenol oxidase (PPO), and peroxidase (POD) expressed in root tissues when grown in the presence and absence of P. thornei over time (2-8 weeks). Higher constitutive levels of total phenols were found in resistant synthetic hexaploid wheats CPI133872 (576 µg gallic acid equivalent (GAE)/g root) and CPI133859 (518 µg GAE/g root) at 8 weeks after sowing, compared with moderately resistant and susceptible genotypes (192 to 390 µg GAE/g root). The activity of PPO was induced in resistant (CPI133872) and moderately resistant (GS50a and its derivate QT8343) genotypes, becoming maximal at 4 weeks after P. thornei inoculation. The activity of POD was induced in CPI133872 at 6 weeks after P. thornei inoculation. Different genetic sources of resistance to P. thornei showed diverse defense mechanisms and differences in timing responses. The combined effects of total phenols and oxidative enzymes could be important for defense against P. thornei in some resistant wheat genotypes.

show abstract

Plant growth and phenolic compounds in the rhizosphere soil of wild oat (Avena fatua L.)

Cited by 51 publications

References 31 publications

The effect of plant extracts from Solanum nigrum L. and Avena fatua L. on the growth of some weed species and agropathogenic fungi

The effect of plant extracts from Solanum nigrum L. and Avena fatua L. on the growth of some weed species and agropathogenic fungi

Hierarchy of Carbon Source Utilization in Soil Bacteria: Hegemonic Preference for Benzoate in Complex Aromatic Compound Mixtures Degraded by Cupriavidus pinatubonensis Strain JMP134

Constitutive and Induced Expression of Total Phenol and Phenol Oxidases in Wheat Genotypes Ranging in Resistance/Susceptibility to the Root-Lesion Nematode Pratylenchus thornei

Contact Info

Product

Resources

About