Three Cladosporium spp. As Promising Biological Control Candidates for Controlling Whiteflies (Bemisia spp.) In Egypt

Abdel-Baky, N. F.; Arafat,; ., S. Nehal; Abdel-Salam, A.

doi:10.3923/pjbs.1998.188.195

Cited by 23 publications

(6 citation statements)

References 24 publications

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“…In another report [77], Aspergillus species (A. japonica, A. flavus, A. pseudoelegans and A. niger) were also studied for their biocides' activity on white mould disease of soybean caused by Sclerotinia sclerotiorum. Similarly, three Cladosporium species (C. uredinicola, C. cladosporioides, and C. chlorocephalum) were studied as potential biocontrol agents and were found to be aggressive on whiteflies (Bemisia spp) [78]. Islam et al [74], in a study from Malaysia, corroborated the earlier Egyptian study when they reported the isolation of Cladosporium cladosporiodes from rice tested on the fungus Bamesia tabaci and found it to show excellent biocontrol properties.…”

Section: Discussionmentioning

confidence: 70%

Chemical Characterization and Metagenomic Identification of Endophytic Microbiome from South African Sunflower (Helianthus annus) Seeds

et al. 2023

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Helianthus annus (sunflower) is a globally important oilseed crop whose survival is threatened by various pathogenic diseases. Agrochemical products are used to eradicate these diseases; however, due to their unfriendly environmental consequences, characterizing microorganisms for exploration as biocontrol agents are considered better alternatives against the use of synthetic chemicals. The study assessed the oil contents of 20 sunflower seed cultivars using FAMEs-chromatography and characterized the endophytic fungi and bacteria microbiome using Illumina sequencing of fungi ITS 1 and bacteria 16S (V3–V4) regions of the rRNA operon. The oil contents ranged between 41–52.8%, and 23 fatty acid components (in varied amounts) were found in all the cultivars, with linoleic (53%) and oleic (28%) acids as the most abundant. Ascomycota (fungi) and Proteobacteria (bacteria) dominated the cultivars at the phyla level, while Alternaria and Bacillus at the genus level in varying abundance. AGSUN 5102 and AGSUN 5101 (AGSUN 5270 for bacteria) had the highest fungi diversity structure, which may have been contributed by the high relative abundance of linoleic acid in the fatty acid components. Dominant fungi genera such as Alternaria, Aspergillus, Aureobasidium, Alternariaste, Cladosporium, Penicillium, and bacteria including Bacillus, Staphylococcus, and Lactobacillus are established, providing insight into the fungi and bacteria community structures from the seeds of South Africa sunflower.

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Section: Discussionmentioning

confidence: 70%

Chemical Characterization and Metagenomic Identification of Endophytic Microbiome from South African Sunflower (Helianthus annus) Seeds

et al. 2023

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“…chlorocephalum and C . uredinicola were recorded as entomopathogens of Aphids and whiteflies 19 , 20 . The Genus Cladosporium is considered to be a rich source of diverse and bioactive natural compounds 21 .…”

Section: Introductionmentioning

confidence: 99%

Production of cold-active pectinases by three novel Cladosporium species isolated from Egypt and application of the most active enzyme

Moharram

Zohri

Hesham

et al. 2022

Sci Rep

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Cladosporium parasphaerospermum, Cladosporium chlamydosporigenum, and Cladosporium compactisporum have all been discovered and characterized as new Cladosporium species. The three new species seemed to generate cold-active pectinases with high activity at pH 6.0 and 10 °C, pH 6.0 and 15 °C, and pH 5.0 and 15 °C, respectively, with the most active being C. parasphaerospermum pectinase. In submerged fermentation (SmF), C. parasphaerospermum produced the most cold-active pectinase with the highest activity and specific activity (28.84 U/mL and 3797 U/mg) after 8 days. C. parasphaerospermum cold-active pectinase was isolated using DEAE-Cellulose anion exchange resin and a Sephadex G 100 gel filtration column. The enzyme was purified 214.4-fold and 406.4-fold greater than the fermentation medium using DEAE-cellulose and Sephadex G 100, respectively. At pH 7.0 and 10 °C, pure pectinase had the highest activity (6684 U/mg), with Km and Vmax determined to be 26.625 mg/mL and 312.5 U/min, respectively. At 5 mM/mL, EDTA, MgCl2, and SDS inhibited the activity of pure pectinase by 99.21, 96.03, and 94.45%, respectively. The addition of 10 U/mL pure pectinase enhanced the yield of apple, orange, apricot, and peach juice by 17, 20, 13, and 24%, respectively, and improved the clarity and colour of orange juice by 194 and 339%, respectively. We can now add cold-active pectinase production to the long list of Cladosporium species that have been identified. We also report three new species that can be used in biotechnological solutions as active microbial pectinase producers. Although further research is needed, these distinct species might be used to decompose difficult and resistant pertinacious wastes as well as clear fruit juices.

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“…In another report by Atallah et al (2022) , Aspergillus species namely A. japonica, A. flavus, A. pseudoelegans, and A. niger exhibited fungicidal activity against white mold disease of soybean caused by Sclerotinia sclerotiorum . Similarly, three species of Cladosporium, namely, C. uredinicola, C. cladosporioides, and C. chlorocephalum , were studied as potential biocontrol agents and proved to have insecticidal activity toward the whiteflies Bemisia spp ( Abdel-Baky, 1998 ). Studies have also shown that certain genera such as Aspergillus, Cladosporium, and Penicillium can be used as effective post-harvest treatment against food-borne fungi of melons and watermelons ( Abdel-Baky, 1998 ).…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, three species of Cladosporium, namely, C. uredinicola, C. cladosporioides, and C. chlorocephalum , were studied as potential biocontrol agents and proved to have insecticidal activity toward the whiteflies Bemisia spp ( Abdel-Baky, 1998 ). Studies have also shown that certain genera such as Aspergillus, Cladosporium, and Penicillium can be used as effective post-harvest treatment against food-borne fungi of melons and watermelons ( Abdel-Baky, 1998 ).…”

Section: Discussionmentioning

confidence: 99%

Contribution to the characterization of the seed endophyte microbiome of Argania spinosa across geographical locations in Central Morocco using metagenomic approaches

Sohaib,

Fays,

Khatib

et al. 2024

Front. Microbiol.

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Microbial endophytes are microorganisms that live inside plants, and some of them play important yet understudied roles in plant health, growth, and adaptation to environmental conditions. Their diversity within plants has traditionally been underestimated due to the limitations of culture-dependent techniques. Metagenomic profiling provides a culture-independent approach to characterize entire microbial communities. The argan tree (Argania spinosa) is ecologically and economically important in Morocco, yet its seed endophyte microbiome remains unexplored. This study aimed to compare the bacterial and fungal endophyte communities associated with argan seeds collected from six sites across Morocco using Illumina MiSeq sequencing of the 16S rRNA gene and ITS regions, respectively. Bacterial DNA was extracted from surface-sterilized seeds and amplified using universal primers, while fungal DNA was isolated directly from seeds. Bioinformatics analysis of sequencing data identified taxonomic profiles at the phylum to genus levels. The results indicated that bacterial communities were dominated by the genus Rhodoligotrophos, while fungal communities exhibited varying degrees of dominance between Ascomycota and Basidiomycota depending on site, with Penicillium being the most abundant overall. Distinct site-specific profiles were observed, with Pseudomonas, Bacillus, and Aspergillus present across multiple locations. Alpha diversity indices revealed variation in endophyte richness between seed sources. In conclusion, this first exploration of the argan seed endophyte microbiome demonstrated environmental influence on community structure. While facing limitations due to small sample sizes and lack of ecological metadata, it provides a foundation for future mechanistic investigations into how specific endophyte–host interactions shape argan adaptation across Morocco’s diverse landscapes.

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Three Cladosporium spp. As Promising Biological Control Candidates for Controlling Whiteflies (Bemisia spp.) In Egypt

Cited by 23 publications

References 24 publications

Chemical Characterization and Metagenomic Identification of Endophytic Microbiome from South African Sunflower (Helianthus annus) Seeds

Chemical Characterization and Metagenomic Identification of Endophytic Microbiome from South African Sunflower (Helianthus annus) Seeds

Production of cold-active pectinases by three novel Cladosporium species isolated from Egypt and application of the most active enzyme

Contribution to the characterization of the seed endophyte microbiome of Argania spinosa across geographical locations in Central Morocco using metagenomic approaches

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