Oviposition inhibitory activity of the Mexican sunflower Tithonia diversifolia (Asteraceae) polar extracts against the two-spotted spider mite Tetranychus urticae (Tetranychidae)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F18%3A00004441" target="_blank" >RIV/00027006:_____/18:00004441 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.pmpp.2016.11.002" target="_blank" >http://dx.doi.org/10.1016/j.pmpp.2016.11.002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.pmpp.2016.11.002" target="_blank" >10.1016/j.pmpp.2016.11.002</a>

Result language

angličtina

Original language name

Oviposition inhibitory activity of the Mexican sunflower Tithonia diversifolia (Asteraceae) polar extracts against the two-spotted spider mite Tetranychus urticae (Tetranychidae)

Original language description

The Mexican sunflower (Tithonia diversifolia, Asteraceae) is an invasive shrub of agricultural and non-agricultural lands in tropical countries. Besides extensive utilizations in the traditional medicine, mainly to treat malaria, the plant is believed to have a great potential in agriculture of developing countries as a green biomass to produce fertilizer, fodder and biopesticides. The plant is known to produce tagitinins, which are sesquiterpene lactones with a bitter taste endowed with toxicity against several insects such as mosquitoes, aphids, and beetles. Here, we evaluated the potential of T. diversifolia against the two-spotted spider mite Tetranychus urticae (Tetranychidae), which is one of the most economically important arthropod pests worldwide. The leaf methanolic extract and its ethyl acetate fraction were tested for acute and chronic toxicity and for oviposition inhibitory effects. The chemical composition of the extracts was analyzed by HPLC-MSn and NMR. The main constituents were flavonoid derivatives, phenylpropanoids and sesquiterpene lactones. Among the latter, tagitinin C and tagitinin A were the major compounds. In acute toxicity assays, mortality did not exceed 50% even for the highest tested dose of 150 mu g cm(-3). However, in chronic toxicity assays, on day 5 from application, the methanolic extract LD50 was 41.3 mu g cm(-3) while LD90 was 98.7 mu g cm(-3). Furthermore, both T. diversifolia extracts inhibited oviposition in T. urticae. The ethyl acetate extract was the most active oviposition inhibitor, with an ED50 value of 44.3 mu g cm(-3) and an ED90 of 121.5 mu g cm(-3). Overall, the good yield rate of the extract and the high crop yield highlighted good prospects of using the extract from this plant for the development of oviposition inhibitors against mites.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

<a href="/en/project/QJ1510160" target="_blank" >QJ1510160: New technologies of the gaining of bioactive compounds from medicinal and aromatic plants as a sources of active substances of botanical pesticides and food supplements.</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physiological and Molecular Plant Pathology

ISSN

0885-5765

e-ISSN

—

Volume of the periodical

101

Issue of the periodical within the volume

JAN 2018

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

85-92

UT code for WoS article

000426426800010

EID of the result in the Scopus database

2-s2.0-85006760660