The Effect of Myco-Biocontrol Based Formulates on Yield, Physiology and Secondary Products of Organically Grown Basil

Teliban, Gabriel-Ciprian; Burducea, Marian; Zheljazkov, Valtcho D.; Dincheva, Ivayla; Badjakov, Ilian; Munteanu, N.; Mihalache, Gabriela; Cojocaru, Alexandru; Popa, Lorena-Diana; Stoleru, Vasile

doi:10.3390/agriculture11020180

Cited by 7 publications

(8 citation statements)

References 61 publications

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“…After 90 min of incubation, the samples were read on the spectrophotometer at 760 nm. The results were interpreted according to the calibration curve as gallic acid equivalents per gram of dry mass [37,38].…”

Section: Biochemical Analysesmentioning

confidence: 99%

The Impact of Salinity Stress on Antioxidant Response and Bioactive Compounds of Nepeta cataria L.

et al. 2022

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In this study, the ability of Nepeta cataria L. to grow and synthesize bioactive compounds on soil treated with different salt concentrations was tested to evaluate the opportunity of cultivating it in soils affected by salinization. N. cataria L. was grown in soil containing specific amounts of NaCl, Na2SO4, and their mixture. After harvesting, the plants were analyzed from the morphological and physiological point of view. Salinity stress inhibited the growth, with the highest decrease of the plant yield up to about 70% in the case of salt mixture, and smaller values for the separate salt treatments. In the same time, as a defense mechanism, there was an increase of granular trichomes’ density, as observed with the scanning electron microscope. For mild concentrations of salt, the amount of chlorophyll pigments was enhanced, while for stronger salinity stress, it decreased. The opposite behavior was evidenced for the polyphenol content, as antioxidant activity was used as a protective mechanism against reactive oxygen species produced under salinity stress. The antioxidant activity was considerably higher for separate NaCl and Na2SO4 treatments than for the salt mixture variants. The results showed that the species Nepeta cataria L. reacts well to high salinity levels, with an increased content of bioactive compounds and antioxidant activity even for the highest studied salinity conditions.

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Section: Biochemical Analysesmentioning

confidence: 99%

The Impact of Salinity Stress on Antioxidant Response and Bioactive Compounds of Nepeta cataria L.

et al. 2022

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“…In addition, the treatment with Azotobacter chroococcum 76A indicated greater phytostimulation efficacy with higher significant values of sweet basil in root dry weight, rate of CO 2 net assimilation and photosynthetic efficiency that can be related to a better fitness of the plant. The colonization of roots by Trichoderma may enhance growth response due to the enhancement of carbohydrate metabolism, photosynthetic and respiratory rates [ 45 ], thus triggering the plants physiological processes that improve the photosynthesis rate and stomatal conductance [ 57 ]. Silletti et al noted that the photosynthetic rate was similarly higher in wheat when treated with Trichoderma or with Azotobacter [ 48 ], whereas the bacteria was found to release phytohormones that could stimulate photosynthesis in basil [ 47 ].…”

Section: Discussionmentioning

confidence: 99%

“…Other studies have demonstrated how the use of microorganisms can influence the essential oil and phenolic components on basil. For instance, the inoculum of AMF improved the concentration of rosmarinic acid, chicoric acid and caffeic acid on 4 basil cultivars [ 70 ], growth and aroma volatiles (e.g., linalool) on sweet basil in heavy-metal-contaminated soil [ 44 ], plus the use of different commercial microbial bio-based products increased the percentage of different metabolites (e.g., caffeic acid) on different basil cultivars [ 57 ]. Moreover, our results indicate that the simultaneous application of Trichoderma afroharzianum T22 with Azotobacter chroococcum 76A induced a better modulation of phenolics metabolism when compared to the single applications of Trichoderma and Azotobacter , especially for rosmarinic and caffeic acid, as is in line with findings by Sabra et al [ 44 ] affirming that the dual application of beneficial fungi and its associated bacteria generated an enhancement of sweet basil nutraceutical value.…”

Section: Discussionmentioning

confidence: 99%

Bioformulations with Beneficial Microbial Consortia, a Bioactive Compound and Plant Biopolymers Modulate Sweet Basil Productivity, Photosynthetic Activity and Metabolites

et al. 2021

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Increasing attention is being given to the development of innovative formulations to substitute the use of synthetic chemicals to improve agricultural production and resource use efficiency. Alternatives can include biological products containing beneficial microorganisms and bioactive metabolites able to inhibit plant pathogens, induce systemic resistance and promote plant growth. The efficacy of such bioformulations can be increased by the addition of polymers as adjuvants or carriers. Trichoderma afroharzianum T22, Azotobacter chroococcum 76A and 6-pentyl-α-pyrone (6PP; a Trichoderma secondary metabolite) were administrated singularly or in a consortium, with or without a carboxymethyl cellulose-based biopolymer (BP), and tested on sweet basil (Ocimum basilicum L.) grown in a protected greenhouse. The effect of the treatments on basil yield, photosynthetic activity and secondary metabolites production was assessed. Photosynthetic efficiency was augmented by the applications of the bioformulations. The applications to the rhizosphere with BP + 6PP and BP + T22 + 76A increased the total fresh weight of basil by 26.3% and 23.6%, respectively. Untargeted LC-MS qTOF analysis demonstrated that the plant metabolome was significantly modified by the treatments. Quantification of the profiles for the major phenolic acids indicated that the treatment with the T22 + 76A consortium increased rosmarinic acid content by 110%. The use of innovative bioformulations containing microbes, their metabolites and a biopolymer was found to modulate the cultivation of fresh basil by improving yield and quality, thus providing the opportunity to develop farming systems with minimal impact on the environmental footprint from the agricultural production process.

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“…Total chlorophyll content was measured with CCM 200 (chlorophyll content meter), a non-destructive portable device produced by ADC Bioscientific Ltd., Hoddesdon, UK, which measures total chlorophyll and expresses it in CCI units (Chlorophyll Content Index) [ 38 ].…”

Section: Methodsmentioning

confidence: 99%

“…The gas exchange parameters, photosynthesis, and transpiration were measured with a portable compact system LCI Bioscientific UK Ltd., with a Narrow Leaf Chamber, with an area of 5.8 cm 2 , between 9–10 a.m. [ 38 ].…”

Section: Methodsmentioning

confidence: 99%

Assessment of the Fertilization Capacity of the Aquaculture Sediment for Wheat Grass as Sustainable Alternative Use

Burducea

Lobiuc

Dirvariu

et al. 2022

Plants

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Periodic removal of sediment from aquaculture ponds is practiced to maintain their productivity and animal welfare. The recovery of sediment as a plant fertilizer could alleviate the costs of sediment removal. The objective of this study was to test the effects of a dried sediment, extracted from an aquaculture pond used for common carp cultivation, on the growth and physiology of potted wheat grass and the quality of the juice obtained from wheat grass. The results showed that sediment application did not produce significant morphological changes, although the values for plant height (16.94–19.22 cm), leaf area (19.67–139.21 mm2), and biomass (3.39–4.26 g/plant) were higher in sediment-grown plants. However, at a physiological level, the effect was negative, decreasing photosynthesis (0.82–1.66 μmol CO2 m2s−1), fluorescence ΦPSII (0.737–0.782), and chlorophyll content (1.40–1.83 CCI). The juice yield was reduced in the sediment treatments (46–58 g/100 g), while the quality was improved by increasing the content of phenols (2.55–3.39 µg/mL gallic acid equivalent), flavonoids (1.41–1.85 µg/mL quercetin equivalent), and antioxidant activity (47.99–62.7% inhibition of ;2,2-diphenyl-1-picrylhydrazyl). The positive results obtained in this study can be attributed to the moderate nutrient content of the sediment and a negligible concentration of heavy metals.

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The Effect of Myco-Biocontrol Based Formulates on Yield, Physiology and Secondary Products of Organically Grown Basil

Cited by 7 publications

References 61 publications

The Impact of Salinity Stress on Antioxidant Response and Bioactive Compounds of Nepeta cataria L.

The Impact of Salinity Stress on Antioxidant Response and Bioactive Compounds of Nepeta cataria L.

Bioformulations with Beneficial Microbial Consortia, a Bioactive Compound and Plant Biopolymers Modulate Sweet Basil Productivity, Photosynthetic Activity and Metabolites

Assessment of the Fertilization Capacity of the Aquaculture Sediment for Wheat Grass as Sustainable Alternative Use

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