Plant, pathogen and biocontrol agent interaction effects on bioactive compounds and antioxidant activity in garlic

Cavalcanti, Vytória Piscitelli; Aazza, Smail; Bertolucci, Suzan Kelly Vilela; Pereira, Maysa Mathias Alves; Cavalcanti, Pórtya Piscitelli; Buttrós, Victor Hugo Teixeira; Silva, Ana Mara de Oliveira e; Pasqual, Moacir; Soares, Joyce Dória Rodrigues

doi:10.1016/j.pmpp.2020.101550

Cited by 9 publications

(5 citation statements)

References 36 publications

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“…Distinct species of BCA might differ in the mechanism of action yielding differences in biocontrol efficacy [6], and genetic variation within the same species of BCA that might cause variability in control efficacy [16,21]. Higher W% was observed in some biocontrol treatments compared to the negative control suggesting an interaction between the biocontrol pathogen and the plant [6,22]. Ten of the biocontrol treatments (isolates 80-45, 55-45, 48-86, 38-53, 32-86, 20-45, 110-81, 97-81, and 115-53) showed an increase of W% ranging from 17% to 5% compared to negative control.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening

Maxwell¹,

Chang²,

Chen³

et al. 2022

Proceedings of the International Symposium Southeast Asia Vegetable 2021 (SEAVEG 2021)

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Tomato is among the most cultivated vegetable crops worldwide, and bacterial wilt (BW) caused by the Ralstonia solanacearum species complex (RSSC) is the most devastating disease affecting tomato, impacting food and nutrition security in many areas. Pesticides used for controlling plant diseases are hazardous to producers, consumers, and the environment, whereas biological control is potentially a sustainable and environmentally safe alternative for disease management. To identify efficient biocontrol agents (BCAs), twenty-five potential BCA isolates were screened for control efficacy to BW on ten-day-old tomato seedlings of highly susceptible (L390) and moderately resistant (L180) cultivars previously inoculated with R. solanacearum strain PSS4 (=Asian origin, Race 1, Phylotype I; Biovar 3). After ten days incubation at 28 °C in the growth chamber, wilting (W%) and biocontrol efficacy (BE%) percent were evaluated. Of the 25 BCAs tested, four significantly reduced W%, with BE% ranging from 50% to 80% for both varieties. The four BCA isolates were identified as Talaromyces sp., Trichoderma sp., Bacillus sp., and Variovorax sp. The seedling method allows the rapid and cost-effective in vivo screening of many potential BCAs to reliably identify those with higher bacterial wilt control efficacy for further testing.

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Section: Resultsmentioning

confidence: 99%

Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening

Maxwell¹,

Chang²,

Chen³

et al. 2022

Proceedings of the International Symposium Southeast Asia Vegetable 2021 (SEAVEG 2021)

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“…Different procedures to report antioxidant capacities are commonly used to evaluate the response of the plant defence system [54]. Specifically, the 2,2-diphenyl-1-picrylhydrazyl radical (DPPH), Trolox equivalent antioxidant activity (TEAC) and cupric ion reducing antioxidant activity (CUPRAC) were evaluated in leaves and roots to provide a complete visual regarding the elimination of free radicals [50].…”

Section: Discussionmentioning

confidence: 99%

The Biosynthesis, Accumulation of Phenolic Compounds and Antioxidant Response in Lactuca sativa L. Plants Inoculated with a Biofertilizer Based on Soil Yeast and Iron Nanoparticles

Berríos,

Nahuelcura,

González

et al. 2024

Plants

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Lettuce is a vegetable that contributes vitamins, minerals, fibre, phenolic compounds and antioxidants to the human diet. In the search for improving production conditions and crop health, the use of microorganisms with plant growth-promoting capabilities, such as soil yeasts (PGPY), in conjunction with nanotechnology could offer sustainable development of agroecosystems. This study evaluated the synthesis of health-promoting bioactive compounds in lettuce under the application of soil yeast and an iron nanoparticle (NP-Fe2O3) encapsulated in alginate beads. Two yeast strains, Candida guillermondii and Rhodotorula mucilaginosa, and a consortium of both yeasts were used in the presence and absence of Fe2O3-NPs. Phenolic compounds were identified and quantified via HPLC-ESI-Q-ToF and antioxidant activity. Ten phenolic compounds were identified, highlighting the chicoric acid isomer and two quercetin glycosides with high concentrations of up to 100 µg g−1 in treatments with C. guillermondii. Treatments with R. mucilaginosa and NPs-Fe2O3 presented an increase in antioxidant activity, mainly in TEAC, CUPRAC and DPPH activities in leaves, with significant differences between treatments. Therefore, the use of encapsulated soil yeasts is a viable alternative for application in vegetables to improve the biosynthesis and accumulation of phenolic compounds in lettuce and other crops.

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“…Among them, superoxide dismutase (SOD), peroxidase (POD), and ascorbate peroxidase (APX) can help to maintain the dynamic balance of reactive oxygen species. Microbes associated with plants may also help stimulate the antioxidative system in the host plants [113]. For example, Bacillus sp.…”

Section: Antioxidant Enzymesmentioning

confidence: 99%

Bacterial Bioprotectants: Biocontrol Traits and Induced Resistance to Phytopathogens

Egamberdieva

Eshboev

Shukurov

et al. 2023

Microbiology Research

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Plant growth and nutrition are adversely affected by various factors such as water stress, high temperature, and plant pathogens. Plant-associated microbes play a vital role in the growth and development of their hosts under biotic and abiotic stresses. The use of a rhizosphere microbiome for plant growth stimulation and the biological control of fungal disease can lead to improved crop productivity. Mechanisms used by plant-growth-promoting rhizobacteria (PGPR) to protect plants from soilborne pathogens include antibiosis, the production of lytic enzymes, indole-3 acetic acid production, decreasing ethylene levels by secreting 1-aminocyclopropane-1-carboxylate deaminase, competition for nutrients and niches, parasitism and induced systemic resistance. In this review, we emphasize the biological control of plant pathogens by root-associated microbes and discuss traits involved in pathogen reduction. Future research should focus on the effect of root exudation on plant–pathogen interactions under various abiotic factors. Moreover, the development of microbial fungicides with longer shelf lives will help farmers to opt for organic agriculture, reducing the use of chemical fertilizers. This trend is expected to drive the adoption of biological control methods in agriculture. The future prospects for the biological control of plant diseases are bright and are expected to play an increasingly important role in sustainable agriculture.

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Plant, pathogen and biocontrol agent interaction effects on bioactive compounds and antioxidant activity in garlic

Cited by 9 publications

References 36 publications

Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening

Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening

The Biosynthesis, Accumulation of Phenolic Compounds and Antioxidant Response in Lactuca sativa L. Plants Inoculated with a Biofertilizer Based on Soil Yeast and Iron Nanoparticles

Bacterial Bioprotectants: Biocontrol Traits and Induced Resistance to Phytopathogens

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