Morphological Identification of Aphid Species Infesting Some Ornamental plants in Taif Governorate

Rashwan, Rania S.; Alghamdi, Abdulrahman Abdullah; Althagafi, Seham S.

doi:10.21608/eajbsa.2016.12744

Cited by 3 publications

(3 citation statements)

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“…Calculated F values= 6.2 and 12.4, LSD = 36.9 and 42.3 for 2017 and 2018 seasons, respectively. Obtained results were confirmed with the finding of Rashwan et al (2016) who recorded no aphid infestation on the four ornamental plants: B. spectabilis, N. oleander, S. actinophylla and R. graveolens during 2015/2016 season. The most abundant density of aphids for all tested plants was noticed during 20 th March to 5 th June.Tecoma stans was the most susceptible ones with mean number 144 and 145.8 individuals/leaflets in 2017 and 2018, respectively.…”

Section: Population Fluctuations Of Aphids On Seven Ornamental Plants...supporting

confidence: 85%

Susceptibility of Some Ornamental Plants to Aphid Infestation and It's Associated with Plant Biochemical Components and Morphological Structures

Rashwan

2021

Arab Universities Journal of Agricultural Sciences

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Aphid is a major insect pest attacking ornamental plants. It causes great damage by reducing the economic values of plants. The investigated research aims to determine the relation between leaf biochemical components, morphological structures of plant leaf surface and the susceptibility of seven ornamental plants to Aphid Infestation. Highest recorded aphid infestation was observed on Tecoma stans during 2017 and 2018 seasons followed by Rosa damascena and Jasminum grandiflorum. There was no recorded infestation on four inspected ornamental plants, Ruta graveolens, Schefflera actinophylla, Nerium oleander and Bougainvillea spectabilis. Activity of antioxidant enzymes plays as defense line when increasing the insect population density. Biochemical components are varied among different plants that prevents or reduces insect infestation, as tannins, total phenol, and Phenol oxidase. Trichomes are considered as main morphological character in plant defense system. These results enhanced utilization resistant ornamental plants due to preventing aphid infestation. It is considered one of the integrated pest management programs, that achieves health environment without more insecticidal application.

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Section: Population Fluctuations Of Aphids On Seven Ornamental Plants...supporting

confidence: 85%

Susceptibility of Some Ornamental Plants to Aphid Infestation and It's Associated with Plant Biochemical Components and Morphological Structures

Rashwan

2021

Arab Universities Journal of Agricultural Sciences

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“…To the best of our knowledge, no studies have been conducted to investigate the antibacterial and anticancer activities of the endosymbiotic bacteria of aphids, especially in Taif, Saudi Arabia. Only a few attempts have been made to study the morphological identification of aphids in Taif [ 30 ], or the control of aphids infesting the Taif rose [ 31 ] and Taif pomegranates [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

GC Analysis, Anticancer, and Antibacterial Activities of Secondary Bioactive Compounds from Endosymbiotic Bacteria of Pomegranate Aphid and Its Predator and Protector

et al. 2023

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Bacterial secondary metabolites are a valuable source of various molecules that have antibacterial and anticancer activity. In this study, ten endosymbiotic bacteria of aphids, aphid predators and ants were isolated. Bacterial strains were identified according to the 16S rRNA gene. Ethyl acetate fractions of methanol extract (EA-ME) were prepared from each isolated bacterium and tested for their antibacterial activities using the disk diffusion method. The EA-ME of three bacterial species, Planococcus sp., Klebsiella aerogenes, Enterococcus avium, from the pomegranate aphids Aphis punicae, Chrysoperia carnea, and Tapinoma magnum, respectively, exhibited elevated antibacterial activity against one or several of the five pathogenic bacteria tested. The inhibition zones ranged from 10.00 ± 0.13 to 20.00 ± 1.11 mm, with minimum inhibitory concentration (MIC) values ranging from 0.156 mg/mL to 1.25 mg/mL. The most notable antibacterial activity was found in the EA-ME of K. aerogenes against Klebsiella pneumonia and Escherichia coli, with an MIC value of 0.156 mg/mL. The cytotoxic activity of EA-ME was dependent on the cell line tested. The most significant cytotoxicity effect was observed for extracts of K. aerogenes and E. avium, at 12.5 µg/mL, against the epithelial cells of lung carcinoma (A549), with a cell reduction of 79.4% and 67.2%, respectively. For the EA-ME of K. aerogenes and Pantoea agglomerans at 12.5 µg/mL, 69.4% and 67.8% cell reduction were observed against human colon cancer (Hct116), respectively. Gas chromatography–mass spectrometry (GC-MS) analysis of three EA-ME revealed the presence of several bioactive secondary metabolites that have been reported previously to possess antibacterial and anticancer properties. To the best of our knowledge, this is the first study to examine the biological activities of endosymbiotic bacteria in aphids, aphid predators and ants. The promising data presented in this study may pave the way for alternative drugs to overcome the continued emergence of multidrug-resistant bacteria, and find alternative drugs to conventional cancer therapies.

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“…To the best of our knowledge, no studies were conducted to investigate the antibacterial and anticancer activities of endosymbiotic bacteria of aphids, especially in Taif city, Saudi Arabia. Only a few attempts have studied the morphological identification of aphids in Taif [31] or controlling aphids infesting of Taif rose [32].…”

Section: Introductionmentioning

confidence: 99%

Anticancer and antibacterial activities of secondary bioactive compounds from endosymbiotic bacteria of aphid and their surrounding organisms (Predator and protector)

Alsufyani

Al-Otaibi

Alotaibi

et al. 2022

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Secondary metabolites of bacterial origin are a valuable source of diverse molecules with antibacterial and anticancer activities. In the current study, 10 endosymbiotic bacteria were isolated from aphids, aphid predators and ants. Bacterial strains were identified based on the 16S rRNA gene. Crude extracts were prepared from each isolated bacteria and tested for their antibacterial activities using the disk diffusion method. The extracts of three bacterial species;Planococcussp,Klebsiella aerogenes, Enterococcus aviumfromAphis punicae, Chrysoperia carneaandTapinoma magnum, respectively were found to have strong antibacterial activities against one or more of the five pathogenic bacteria tested. The inhibition zones ranged from 10.00± 0.13 to 20.00± 1.11mm with minimum inhibitory concentration (MIC) values ranged from 0.156 mg/mL to 1.25 mg/mL. The notable antibacterial activity was for the crude extract ofK. aerogenesagainstKlebsiella pneumoniaandEscherichia coliat MIC value of 0.156 mg/mL. The cytotoxic activity of the crude extracts varied according to the tested cell line. The most cytotoxic effect was for the extracts ofK. aerogenesandE. aviumat a concentration of 0.16 mg/mL against lung carcinoma epithelial cells (A549) with cell reduction of 79.4% and 67.2%, respectively. Crude extracts ofK. aerogenesandPantoea agglomeransat a concentration of 0.16 mg/mL showed 69.4% and 67.8% cell reduction against human colon cancer (Hct116), respectively. Gas chromatography–mass spectrometry (GC-MS) analysis of three crude extracts revealed the presence of several bioactive secondary metabolites that have been reported previously to possess antibacterial and anticancer properties. To the best of our knowledge, this is the first study to report the biological activities of endosymbiotic bacteria from aphids, aphid predators and ants. The promising data presented in this study opens a new avenue for alternative drugs to overcome the continuous emergence of multidrug-resistant bacteria and to find alternative drugs for traditional cancer therapies.

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Morphological Identification of Aphid Species Infesting Some Ornamental plants in Taif Governorate

Cited by 3 publications

References 4 publications

Susceptibility of Some Ornamental Plants to Aphid Infestation and It's Associated with Plant Biochemical Components and Morphological Structures

Susceptibility of Some Ornamental Plants to Aphid Infestation and It's Associated with Plant Biochemical Components and Morphological Structures

GC Analysis, Anticancer, and Antibacterial Activities of Secondary Bioactive Compounds from Endosymbiotic Bacteria of Pomegranate Aphid and Its Predator and Protector

Anticancer and antibacterial activities of secondary bioactive compounds from endosymbiotic bacteria of aphid and their surrounding organisms (Predator and protector)

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