Insecticidal activities of tea saponin against diamondback moth, <i>Plutella xylostella</i> and aphid, <i>Aphis craccivora</i>

Dolma, Shudh Kirti; Sharma, Eshita; Gulati, Ashu; Reddy, S. G. Eswara

doi:10.1080/15569543.2017.1318405

Cited by 21 publications

(17 citation statements)

References 20 publications

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“…However, the feeding preference index (PI) of the third instar for saponins was less at higher concentrations (0.63). Treatment of diamondback moth larvae with LC 20 and LC 50 doses of TS led to lower growth rates, decreased feed consumption, reduced frass production, lower pupal weights, reduced percentage pupation, slower adult emergence, and diminished fecundity, but prolonged durations of the larval and pupal periods [10].…”

Section: Introductionmentioning

confidence: 93%

“…The remaining E. obliqua were treated with C. oleifera seed cake ethanol extract, 30% EE, 50% EE, and 70% EE. Each pesticide treatment was diluted with deionized water to 8 different concentrations (5,10,15,20,25,30,40, and 50 mg/L). Twenty E. obliqua larvae were tested as a group within the experiments, and three biological replicates were performed.…”

Section: Evaluation Of the Contact Toxicity Of Camellia Saponins On Ementioning

confidence: 99%

“…The annual output of C. oleifera has exceeded 2 million tons, and about 200,000 tons of saponins can be supplied for use [9]. Previous studies have found that tea saponins have a strong insecticidal effect on the diamondback moth, Plutella xylostella, and aphid, Aphis craccivora [10]. In a study on saponin repellent activity, saponins at 4000 mg/L highly repel (48.57%) the third instar of P. xylostella.…”

Section: Introductionmentioning

confidence: 99%

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Insecticidal Activity and Insecticidal Mechanism of Total Saponins from Camellia oleifera

et al. 2019

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Chemical pesticides are commonly used during the cultivation of agricultural products to control pests and diseases. Excessive use of traditional pesticides can cause environmental and human health risks. There are ongoing searches for new plant-derived pesticides to reduce the use of chemical pesticides. In this study, tea saponin extracts of different purities were extracted from Camellia oleifera seeds using AB-8 macroporous resin and gradient elution with ethanol. The insecticidal effects of the tea saponin extracts were evaluated by contact toxicity tests and stomach toxicity tests using the lepidopteran pest of tea plantation, Ectropis obliqua. The total saponins extracted using 70% ethanol showed strong contact toxicity (LC50 = 8.459 mg/L) and stomach toxicity (LC50 = 22.395 mg/L). In-depth mechanistic studies demonstrated that tea saponins can disrupt the waxy layer of the epidermis, causing serious loss of water, and can penetrate the inside of the intestine of E. obliqua. After consumption of the tea saponins, the intestinal villi were shortened and the cavities of the intestinal wall were disrupted, which resulted in larval death. This study highlights the potential of tea saponins as a natural, plant-derived pesticide for the management of plant pests.

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Section: Introductionmentioning

confidence: 93%

Section: Evaluation Of the Contact Toxicity Of Camellia Saponins On Ementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Insecticidal Activity and Insecticidal Mechanism of Total Saponins from Camellia oleifera

et al. 2019

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“…The extraction and isolation of Camellia plant seed produced an important saponin called tea saponin (TS) [88]. The DBM fed on various host plant species strongly influenced by tea saponin regarding nutritional indicators, hormone titers, development, and reproduction [185]. The multiple effects of different concentrations of tea saponin (TS) on DBM rearing on three host plants caused mortality of third-instar larvae [186].…”

Section: Theaceaementioning

confidence: 99%

“…In repellent activity assay, tea saponins showed 48.57% higher repellence at 4.0 g L À1 dose against third-instar larvae of DBM, but feeding preference index (PI) of saponin against third-instar larvae of DBM decreased as concentration (0.63) increased. It showed that TS was more effective against second-instar larvae of DBM, after the application for 3 and 4 days (LC 50 25.79 g L À1 and 21.06 g L À1 , respectively) as compared to standard check, azadirachtin (LC 50 72.55 g L À1 ), after 96 h [185]. TS negatively influences the growth rate, feed consumption, frass production, pupal weight, percentage pupation, adult emergence, and fecundity as well as prolonged larval and pupal period of DBM.…”

Section: Residual Toxicity Of Saponinsmentioning

confidence: 99%

Saponins in Insect Pest Control

Qasim¹,

Islam²,

Ashraf³

et al. 2019

Reference Series in Phytochemistry

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The antifeedant, insecticidal and insect growth inhibitory activities of triterpenoid saponins fromClematis aethusifoliaTurcz againstPlutella xylostella(L.)

Tian

Nan

et al. 2020

Pest Management Science

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BACKGROUND: The diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), is a global insect pest of crops, leading to a reduction of agricultural products in productivity and quality. Plant saponins are rich sources for the discovery of candidates to control insect pests. This study focused on discovery of triterpenoid saponins from Clematis aethusifolia Turcz and evaluation of their antifeedant, insecticidal and insect growth inhibitory activities against the 3rd instar larvae of P. xylostella. RESULTS: Seven triterpenoid saponins (1-7) were isolated for the first time from the n-BuOH extract of C. aethusifolia. Monodes

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Insecticidal activities of tea saponin against diamondback moth, Plutella xylostella and aphid, Aphis craccivora

Cited by 21 publications

References 20 publications

Insecticidal Activity and Insecticidal Mechanism of Total Saponins from Camellia oleifera

Insecticidal Activity and Insecticidal Mechanism of Total Saponins from Camellia oleifera

Saponins in Insect Pest Control

The antifeedant, insecticidal and insect growth inhibitory activities of triterpenoid saponins fromClematis aethusifoliaTurcz againstPlutella xylostella(L.)

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