Biocontrol of early blight disease of eggplant using endophytic Aspergillus terreus: improving plant immunological, physiological and antifungal activities

Attia, Mohamed S.; Hashem, Amr H.; Badawy, Ali A.; Abdelaziz, Amer M.

doi:10.1186/s40529-022-00357-6

Cited by 42 publications

(28 citation statements)

References 61 publications

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“…As shown in Figure 7 , a sharp decrease in chlorophyll (a, b) and carotenoid was observed due to infection with Alternaria fungus compared to uninfected plants. These results are in agreement with several studies [ 6 , 46 , 87 , 94 ]. This acute deficiency in the components of chlorophyll and carotenoids may be due to the plant’s failure to capture light due to a deficiency in the leaf area responsible for light capture and photosynthesis, leaves and plant height, or it may also be due to oxidative explosion and increased activity of chlorophyll-degrading enzymes and chlorophyllase under the conditions of injury [ 6 , 81 , 88 ].…”

Section: Resultssupporting

confidence: 94%

“…These results are in agreement with several studies [ 6 , 46 , 87 , 94 ]. This acute deficiency in the components of chlorophyll and carotenoids may be due to the plant’s failure to capture light due to a deficiency in the leaf area responsible for light capture and photosynthesis, leaves and plant height, or it may also be due to oxidative explosion and increased activity of chlorophyll-degrading enzymes and chlorophyllase under the conditions of injury [ 6 , 81 , 88 ]. However, Alternaria -infected plants treated with silica nanoparticles (50 and 100 ppm) or Si showed a marked increase when compared with untreated infected plants.…”

Section: Resultssupporting

confidence: 94%

“…As shown in the Table 1 , Alternaria infection caused a high DI, reaching 82.5%. The results of this study agree with several studies on Alternaria [ 6 , 44 , 75 ]. Reducing the severity of the disease and increasing the protection% considers the most important indications of the occurrence of plant resistance [ 76 ].…”

Section: Resultssupporting

confidence: 93%

“…Alternaria solani was brought from the plant pathology lab of botany and microbiology Dep., Faculty of science, Al-Azhar University Cairo, Egypt. The fungus was confirmed by Koch’s postulate and the suspensions of conidial were prepared and spore density was counted by a hemocytometer and adjusted to 10 6 spores/mL [ 6 ].…”

Section: Methodsmentioning

confidence: 99%

“…Soil-born fungi including Fusarium and Alternaria caused highly noticeable destructive effects on plants in organic and conventional agriculture [ 3 , 4 , 5 ]. Early blight fungal disease in eggplant that caused by Alternaria solani is one of the most important vegetative diseases, which results in a weakness in the quantity and quality of production [ 6 ]. As the disease causes the leaves to fall and dry, the fruits become exposed to direct sunlight and the infection of the fruits leads to rotting, as well as to their unsuitability for marketing and storage [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

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Mycosynthesis of Silica Nanoparticles Using Aspergillus niger: Control of Alternaria solani Causing Early Blight Disease, Induction of Innate Immunity and Reducing of Oxidative Stress in Eggplant

et al. 2022

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The threats to the life and production of crops are exacerbated by climate change and the misuse of chemical pesticides. This study was designed to evaluate the effectiveness of biosynthesized silica nanoparticles (SiO2-NPs) as an alternative to pesticides against early blight disease of eggplant. Antifungal activity, disease index, photosynthetic pigments, osmolytes, oxidative stress, antioxidant enzymes activities were tested for potential tolerance of eggplant infected with Alternaria solani. Silica nanoparticles were successfully biosynthesized using Aspergillus niger through green and ecofriendly method. Results revealed that SiO2-NPs exhibited promising antifungal activity against A. solani where MIC was 62.5 µg/mL, and inhibition growth at concentration 1000 µg/mL recorded 87.8%. The disease Index (DI) as a result of infection with A. solani reached 82.5%, and as a result, a severe decrease in stem and root length and number of leaves occurred, which led to a sharp decrease in the photosynthetic pigments. However, contents of free proline, total phenol and antioxidant enzymes activity were increased in infected plants. On the other hand, the treatment with SiO2-NPs 100 ppm led to a great reduction in the disease Index (DI) by 25% and a high protection rate by 69.69%. A clear improvement in growth characteristics and a high content of chlorophyll and total carotenoids was also observed in the plants as a result of treatment with silica nanoparticles in (healthy and infected) plants. Interestingly, the noticeable rise in the content of infected and healthy plants of proline and phenols and an increase in the activity of super oxide dismutase (SOD) and polyphenol oxidase (PPO). It could be suggested that foliar application of SiO2-NPs especially 100 ppm could be commercially used as antifungal and strong inducer of plant physiological immunity against early blight disease.

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Section: Resultssupporting

confidence: 94%

Section: Resultssupporting

confidence: 94%

Section: Resultssupporting

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mycosynthesis of Silica Nanoparticles Using Aspergillus niger: Control of Alternaria solani Causing Early Blight Disease, Induction of Innate Immunity and Reducing of Oxidative Stress in Eggplant

et al. 2022

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Influence of biosynthesized magnesium oxide nanoparticles on growth and physiological aspects of cowpea (Vigna unguiculata L.) plant, cowpea beetle, and cytotoxicity

Abdelfattah,

Yousef,

Badawy

et al. 2023

Biotechnology Journal

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Recently, agricultural management innovation has incorporated engineered nanoparticles. The current investigation was carried out to produce magnesium oxide nanoparticles (MgONPs) for the first time applying S. cerevisiae extract. FTIR, XRD), HRTEM, and zeta potential analysis were used to characterize the MgONPs. The FTIR data show that the bioactive substances reduce and cap the synthesized MgONPs. The crystalline metallic MgONPs had four significant peaks in the XRD pattern. The size and form of MgONPs were validated by TEM, which exhibited spherical structures with an average size of 27 nm. The effect of various dosages of MgONPs administered to the cowpea (Vigna unguiculata L.)plant on all in‐vitro parameters was shown to be significant in the study. The concentration 200 ppm was the most significant treatment which increased shoot length, shoot dry‐weight and root dry‐weight by 27.35%, 45.09% and 31.91% when compared with the untreated cowpea plants. MgONPs significantly increased photosynthetic pigments, with 150 ppm treatment significantly increasing soluble proteins and carbohydrates. MgONPs effectively treated cowpea C. maculatus, with dose and time‐dependent insecticidal activity. MgONPs death rates varied by 82.66% and 100% on fifth day. Biochemical and histopathological studies of rats were investigated. Rats treated with MgONPs showed higher GOT, GPT, Urea levels, but lower creatinine, indicating significant differences. MgONPs‐treated rats' liver showed mild to moderate histopathologic changes, including portal blood vessel congestion, lymphocytic cholangitis, and degenerative changes. MgONPs has the potential to improve cowpea development outcomes and suppress grain insects (C. maculatus).This article is protected by copyright. All rights reserved

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Novel Aminocoumarin Derivatives against Phytopathogenic Fungi: Design, Synthesis and Structure‐Activity Relationships

Sun,

Pu,

Lei

et al. 2024

Chemistry & Biodiversity

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Phytopathogenic fungi is the most devastating reason for the decrease of the agricultural production and food safety. To develop new fungicidal agents for resistance concerning, a novel series of aminocoumarin derivatives were synthesized and their fungicidal activity were investigated both in vitro and in vivo. Transmission electron microscope (TEM), scanning electron microscope (SEM), RNA‐Seq, 3D‐QSAR and molecular docking were applied to reveal the underlying anti‐fungal mechanisms. Most of the compounds exhibited significant fungicidal activity. Notably, compound 10c had a more extensive fungicidal effect than positive control. TEM indicated that compound 10c could cause abnormal morphology of cell walls, vacuoles and release of cellular contents. Transcriptional analysis data indicated that 895 and 653 out of 1548 differential expressed genes (DEGs) were up‐regulated and down‐regulated respectively. The Go and KEGG enrichment indicated that the coumarin derivatives could induce significant changes of succinate dehydrogenase (SDH), Acetyl‐coenzyme A synthetase (ACCA) and pyruvate dehydrogenase (PDH) genes, which contributed to the disorders of glucolipid metabolism and the dysfunction of mitochondrial. The results demonstrated that aminocoumarins with schiff‐base as core moieties could be the promising lead compounds for the discovery of novel fungicides.

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Biocontrol of early blight disease of eggplant using endophytic Aspergillus terreus: improving plant immunological, physiological and antifungal activities

Cited by 42 publications

References 61 publications

Mycosynthesis of Silica Nanoparticles Using Aspergillus niger: Control of Alternaria solani Causing Early Blight Disease, Induction of Innate Immunity and Reducing of Oxidative Stress in Eggplant

Mycosynthesis of Silica Nanoparticles Using Aspergillus niger: Control of Alternaria solani Causing Early Blight Disease, Induction of Innate Immunity and Reducing of Oxidative Stress in Eggplant

Influence of biosynthesized magnesium oxide nanoparticles on growth and physiological aspects of cowpea (Vigna unguiculata L.) plant, cowpea beetle, and cytotoxicity

Novel Aminocoumarin Derivatives against Phytopathogenic Fungi: Design, Synthesis and Structure‐Activity Relationships

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