Comprehensive evaluation of effective constituents in total alkaloids from Sophora alopecuroides L. and their joint action against aphids by laboratory toxicity and field efficacy

Ma, Ting; Yan, Hongli; Shi, Xiaoling; Liu, Bingtao; Ma, Zhiqing; Xing, Zhang

doi:10.1016/j.indcrop.2017.10.021

Cited by 49 publications

(41 citation statements)

References 37 publications

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“…The remarkable larvicidal and ovicidal activities of S. alopecuroides extract might be due to the presence of a variety of alkaloids that possess potential insecticidal activity. Previously, it was reported that S. alopecuroides alkaloids showed high toxicity against aphids [59], Plagiodera versicoloraetc [60], Plutella xylostella, Helicoverpa armigera [61], and Leucania separate [62]. Though, in the present study, the mechanism of action of the plant extract from S. alopecuroides was not determined, it has been reported that the alkaloids of S. alopecuroides are involved in the inhibition of two commonly found enzymes (esterase and carboxylesterase) in insects [63].…”

Section: Discussionmentioning

confidence: 54%

Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus

Shoukat

Shakeel

Rizvi

et al. 2020

Insects

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In the current study, to combat insecticide resistance, we explored larvicidal, ovicidal, synergistic, and repellent activities of Sophora alopecuroides extract and its dominant constituents against Aedes albopictus. The results of the toxicity bioassays demonstrated that the extract of S. alopecuroides exerted significant larvicidal activity (16.66-86.66%) against the third-instar larvae of Ae. albopictus at different concentrations (5-50 ug/mL) and low hatchability of eggs (2.32-75%) at 5-50 ug/mL. The constituents of S. alopecuroides showed a synergistic effect when applied as a mixture (LC 30 + LC 30 ) against larvae, while no synergistic effect was observed against the eggs of Ae. albopictus. S. alopecuroides extract provided 93.11% repellency in the first 90 min and gradually decreased to 53.14% after 240 min, while the positive control DEET (N,N-diethyl-3-methylbenzamide) showed 94.18% in the first 90 min and 55.33% after 240 min. All of the results exhibited a concentration-dependent effect. To the best of our knowledge, this is the first time that a study has identified a highly effective extract of S. alopecuroides, which could be used as an alternative agent to control larvae and eggs and to repel adults of Ae. albopictus.

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Section: Discussionmentioning

confidence: 54%

Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus

Shoukat

Shakeel

Rizvi

et al. 2020

Insects

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“…was applied to determine the efficiency ratio of a synergistic combination, the method of Ma et al . was followed . Nine mixtures (synergistic combination) were prepared at LC 50 ratios of 9:1, 8:2, 7:3, 6:4, 5:5, 4:6, 3:7, 2:8, and 1:9.…”

Section: Methodsmentioning

confidence: 99%

Efficacy of binary combinations between methyl salicylate and carvacrol against thrips Anaphothrips obscurus: laboratory and field trials

Liu

et al. 2019

Pest Management Science

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BACKGROUND: Thrips Anaphothrips obscurus are one of the cosmopolitan major pests feeding on cereals and other grasses. In order to develop alternatives of chemical insecticides for thrips control, based on fumigant activity screening and evaluation of 22 essential oil (EO) compounds against the thrips, the binary interactions of methyl salicylate and carvacrol (MS-C) with high fumigant toxicity were studied systematically by bioassay and field trials. RESULTS:The bioassay results showed that six in 22 EO compounds had high fumigant toxicity against both the second-instar nymphs and adults of A. obscurus, including methyl salicylate, carvacrol, thymol, trans-cinnamaldehyde, diallyl trisulfide, and L-perillaldehyde. Furthermore, the combination of methyl salicylate mixed with carvacrol at a volume ratio of 5:5 exhibited the most significant synergism against A. obscurus, with a poison ratio value of 1.32 and a co-toxicity coefficient of 151.15. The optimal formulation of microemulsion (ME) was composed of 5% methyl salicylate, 5% carvacrol, 46% adjuvant and 44% deionized water. The result of dynamic light scattering and stability showed that MS-C 10% ME was a transparent, single-phase and homogeneous liquid system. Field trials indicated that the ME displayed a significant control efficacy of about 89.17% on thrips in peppers, and 82.59% in broad bean on the seventh day post application with a dosage of 600.0 g A.I hm -2 , respectively. CONCLUSION: The binary combination of MS-C possesses strikingly synergistic action against thrips A. obscurus, and the MS-C 10% ME has the potential to be developed as a botanical pesticide product for thrips control.

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“…19,20 Its main bioactive constituents were confirmed as alkaloids, which could fall into three categories, namely matrine-type, aloperinetype and cytisine-type. 21 Matrine-type alkaloids, including matrine, sophocarpine and oxymatrine etc., have drawn wide attention for their excellent activity, and high content and abundant varieties in S. alopecuroides. 21 Furthermore, matrine possesses broad bioactivities including insecticidal, antibacterial, antifungal, and antiviral activities, 22,23 especially on aphids.…”

Section: Introductionmentioning

confidence: 99%

“…21 Matrine-type alkaloids, including matrine, sophocarpine and oxymatrine etc., have drawn wide attention for their excellent activity, and high content and abundant varieties in S. alopecuroides. 21 Furthermore, matrine possesses broad bioactivities including insecticidal, antibacterial, antifungal, and antiviral activities, 22,23 especially on aphids. 21 More importantly, matrine is easy to degrade in soil and water, 24,25 and safe to non-target organisms, 26 showing good environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

“…21 Furthermore, matrine possesses broad bioactivities including insecticidal, antibacterial, antifungal, and antiviral activities, 22,23 especially on aphids. 21 More importantly, matrine is easy to degrade in soil and water, 24,25 and safe to non-target organisms, 26 showing good environmental friendliness. Now, a pesticide with matrine as the active or iconic ingredient is the most registered in commercialized botanical pesticide products in China.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of physiological and biochemical effects of two Sophora alopecuroides alkaloids on pea aphids Acyrthosiphon pisum

Shi

et al. 2020

Pest Management Science

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BACKGROUND: Sophora alopecuroides alkaloids are the main constituents for the broad bioactivities on insect pests, especially on aphids. However, the aphicidal mode of action of S. alopecuroides alkaloids remains unclear. To clarify the aphicidal action, avermectin was selected as a positive control, and matrine, sophocarpine were chosen as the representative alkaloids to determine the physiological and biochemical effects on pea aphids (Acyrthosiphon pisum). RESULTS: The aphids treated by matrine and sophocarpine developed the intoxication symptoms of convulsions, paralysis, and death. However, avermectin showed no convulsions. Moreover, the two alkaloids had a significant inducing effect on glutamic acid decarboxylase, and the specific enzyme activity was 1.14-1.22 times of the control group. In the meanwhile, both matrine and sophocarpine possessed a dose-response and time-response inhibitory effect on alanine aminotransferase in vivo and in vitro. Furthermore, the glutamate content in pea aphids treated with the two alkaloids increased significantly with time, which was about 1.5-2.0 times that of the control group. Similarly, the GABA content elevated significantly, with an increase of 1.0-1.3 times. In addition, all the treatments, except avermectin, presented inhibitory effects on Na + , K +-ATPase, Ca 2+ and Mg 2 +-ATPase, with dose-response and time-response effect. However, the three treatments had no significant effect on acetylcholinesterase and acetylcholine content. CONCLUSION: The toxicological action of matrine and sophocarpine is related to the regulation on glutamate and γ-aminobutyric acid systems and has certain similarities to that of avermectin. These findings would provide a basis for further mechanism elucidation.

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Comprehensive evaluation of effective constituents in total alkaloids from Sophora alopecuroides L. and their joint action against aphids by laboratory toxicity and field efficacy

Cited by 49 publications

References 37 publications

Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus

Larvicidal, Ovicidal, Synergistic, and Repellent Activities of Sophora alopecuroides and Its Dominant Constituents Against Aedes albopictus

Efficacy of binary combinations between methyl salicylate and carvacrol against thrips Anaphothrips obscurus: laboratory and field trials

Evaluation of physiological and biochemical effects of two Sophora alopecuroides alkaloids on pea aphids Acyrthosiphon pisum

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