Assessment of mutant tomato lines as a starting material for breeding varieties resistant to Alternaria alternata

Nekoval, S. N.; Zakharchenko, Anastasia; Sadovaya, Anastasia; Churikova, Arina; Fedoryanskaya, Irina

doi:10.1016/j.sjbs.2021.09.066

Cited by 3 publications

(1 citation statement)

References 26 publications

(40 reference statements)

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“…Under the microscope, the two heads of macroconidia were pointed, slightly curved, sickle-shaped, with septa; microconidia were elliptical, septate. A spore suspension was prepared according to Nekoval et al (2022). After root injury, each tomato seedling was irrigated with 10 ml spore suspension, and the symptoms were observed after the disease.…”

Section: Isolation and Identification Of Pathogensmentioning

confidence: 99%

Biocontrol activity and action mechanism of Bacillus velezensis strain SDTB038 against Fusarium crown and root rot of tomato

et al. 2022

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Fusarium crown and root rot of tomato is a soilborne diseases that has brought serious harm and economic losses to tomato production in facilities in recent years. The disease has been reported in more than 30 countries worldwide, but there are few reports on its biological control. A Bacillus velezensis strain SDTB038 with biocontrol effects was isolated and identified in a previous study and is considered one of the most important PGPRs. Seven secondary metabolite biosynthesis gene clusters were found in strain SDTB038 by whole genome sequencing, explaining its biocontrol effects. Results indicated that different concentrations of SDTB038 fermentation broth inhibited the mycelial growth of Fusarium crown and root rot of tomato. Strain SDTB038 could generate indole acetic acid and promote healthy growth of tomatoes, while the effect of 108 CFU/ml SDTB038 concentration on promoting tomato growth was the most obvious. B. velezensis SDTB038 significantly reduced the accumulation of ROS in tomato plants, induced the up-regulation of antifreeze genes, and promoted the rapid recovery of tomato plants at low temperatures in a pot experiment. At the same time, SDTB038 had good control effect on Fusarium crown and root rot of tomato, and 108 CFU/ml SDTB038 fermentation broth had the best control effect, which was 42.98%. In summary, the strain B. velezensis SDTB038 may be a promising bacterial agent for biological control of Fusarium crown and root rot of tomato, and an important source of potential antimicrobial compounds.

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Section: Isolation and Identification Of Pathogensmentioning

confidence: 99%

Biocontrol activity and action mechanism of Bacillus velezensis strain SDTB038 against Fusarium crown and root rot of tomato

et al. 2022

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Effectiveness of Bacillus pseudomycoides strain for Biocontrol of Early Blight on tomato plants

ElSharawy,

Eid,

Ebrahiem

2023

Int. J. Phytopathol.

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Alternaria early blight is an air-borne and soil-borne pathogen that cause losses and damages that can reach up to 80% in tomato production. In our work, the immediate antagonistic effect of Bacillus pseudomycoides was inspected against Alternaria early blight of tomato. Bacillus pseudomycoides (Bp1) (OQ629426) gave inhibition efficacy against A. solani growth, being, 74.22 %. Invitro, Bp1 had the capability to produce the endogenous plant auxin (IAA) it was 18.9 (µg/100 mL), the quantity of GA 9.4 (µg/100 mL), 95.8 μ Deferroxamine mesylate. Tomato plants treated with B. pseudomycoides registered the least disease severity, being 50 and 40 % in Mancozeb + ALS and Bp1+ ALS treatments with high efficiency to control the severity between 75 and 100 % respectively. Tomato plants treated with B. pseudomycoides showed improved growth characteristics as compared with the untreated control. Plants with bacterial treatment conferred 45.6 cm shoot length, 2.9 (g∕plant) fresh weight and 0.7 (g∕plant) Dry weight. The highest increase in the activity of polyphenol oxidase (PPO) and peroxidase (POD) was observed in the infected leaves of tomato plants treated with B. pseudomycoides Bp1 (T4) (4.6, 6.9 m/g f. w.) respectively, followed by treatment of plants with Mancozeb (T3) (3.9, 5.4 m/g f. w.) respectively, compared to other treatments. This study suggested that B. pseudomycoides is a promising biocontrol agent against Alternaria early blight. This bacterium may represent an important source of potential antimicrobial bio-agent against Alternaria early blight disease, also it may play a role in the development of integrated control programs in future studies.

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Impacts of Environmental Factors and Nutrients Management on Tomato Grown under Controlled and Open Field Conditions

et al. 2023

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Tomato (Solanum lycopersicum) is commonly cultivated in the greenhouse and open fields. Organic and conventional nutrients are two common inputs for crops. Since there are different methods for producing tomatoes, the four most important scenarios were selected, focusing on two types of nutrient management options (organic and conventional), and two types of cultivation methods (open field and greenhouse). The greenhouse organic (scenario one: GH-O), greenhouse conventional (scenario two: GH-C), open field organic (scenario three: OF-O), and open field conventional (scenario four: OF-C) were the four scenarios examined in this research. This study aims to investigate the environmental effects of greenhouse and open field tomatoes in the organic and conventional system of nutrients. Life cycle assessment (LCA) was used to assess the environmental impact of different scenarios. This paper uses midpoint attributional LCA to analyze environmental damages during tomato production. In this study, the environmental effect of scenarios was evaluated in three categories: human health, ecosystem quality, and resources. The system boundary starts from the cradle and ends at the farm gate with the harvest of tomatoes. One ton of tomatoes (mass unit) is considered the functional unit for this research. The ReCiPe 2016 model was used for the assessment of the environmental impact. The results of this research showed that scenario two (GH-C) had the highest yield among the other scenarios, and scenario one (GH-O) had the lowest environmental damage. According to the results of this study, the use of compost in the organic open-field scenario was not suggested to be a good option for tomato cultivation because of its negative environmental impact on human health, ecosystem quality, and resources.

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Assessment of mutant tomato lines as a starting material for breeding varieties resistant to Alternaria alternata

Cited by 3 publications

References 26 publications

Biocontrol activity and action mechanism of Bacillus velezensis strain SDTB038 against Fusarium crown and root rot of tomato

Biocontrol activity and action mechanism of Bacillus velezensis strain SDTB038 against Fusarium crown and root rot of tomato

Effectiveness of Bacillus pseudomycoides strain for Biocontrol of Early Blight on tomato plants

Impacts of Environmental Factors and Nutrients Management on Tomato Grown under Controlled and Open Field Conditions

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