The essential oil of inula racemosa

Bokadia, M. M.; MacLeod, Alexander J.; Mehta, Sunidhi; Mehta, B. K.; Patel, Harshad B.

doi:10.1016/s0031-9422(00)83760-7

Cited by 34 publications

(8 citation statements)

References 5 publications

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“…Sesquiterpenelactones isolated from different plant species have been known to show nematicidal, plant growth regulatory, antifungal and insecticidal properties (Datta and Saxena, 2001;Barrero et al, 2000;Liu et al, 2006;Ma et al, 2013, Wu et al, 2016. Chemical profiling of the root essential oil of I. racemosa showed the presence of mainly sesquiterpenes (60%),and other minor constituent were apiotaxene (22 %) and phenylacetonitrile (2 %) (Bokadia et al, 1986). Jamna et al (2012) reported the presence of tannins, sterols and alkaloids and absence of triterpenoids and flavonoids in the roots of I. racemosa.…”

Section: Resultsmentioning

confidence: 99%

Potential of Inula racemosa root extract and its fractions to suppress root-knot nematode Meloidogyne incognita

Kaur

Chahal

Dhillon

et al. 2017

JANS

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Nematicidal potential of chloroform root extract of Inula racemosa and its fractions was investigated on egg hatching and mortality of root knot nematode Meloidogyne incognita. Egg masses and second stage juveniles (J2) of M. incognita were exposed to different concentrations (0.1-8.0 mg ml-1) of I. racemosa root extract and its fractions. Observations on egg hatch were recorded on 1st, 3rd, 5th, 7th and 9th day and those of mortality studies were recorded on 2nd, 4th, 6th, 8th and 10th day, respectively. Significant mortality as well as egg hatch inhibition was observed for all the tested components at 5 %. The root extract was found to be most effective in controlling egg hatching as complete inhibition was observed at 8.0 mg ml-1 concentration on 1stday of treatment and nonpolar fraction was most effective in causing mortality of J2 of M. incognita as 100 % inhibition was observed at 6.0 and 8.0 mg ml-1 concentration on 2nd day of treatment. Maximum inhibition of egg hatching was observed for root extract at 8.0 mg ml-1 concentration and 100 % mortality was observed for root extract as well as nonpolar fraction at the same concentration. The nonpolar fraction was most effective in causing mortality as maximum mortality was observed at 6.0 and 8.0 mg ml-1 concentration throughout the exposure time. Polar fraction was least effective among all the components both in egg hatch inhibition and J2 mortality of M. incognita. Both the activities showed concentrations as well as time dependence. Results show different role of tested components on egg hatching and mortality of root knot nematode. The root extract of I. racemosa and its fractions showed a potential to develop new nematicide.

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Section: Resultsmentioning

confidence: 99%

Potential of Inula racemosa root extract and its fractions to suppress root-knot nematode Meloidogyne incognita

Kaur

Chahal

Dhillon

et al. 2017

JANS

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“…Literature data on a few species are available, including Dittrichia viscosa (L.) Greuter (formerly Inula viscosa (L.) Aiton) [26], Inula racemosa Hook. f. [27,28], Inula helenium L. [1], Pulicaria mauritanica Coss. [29] and T. speciosa [24,30].…”

Section: Discussionmentioning

confidence: 99%

Composition of Essential Oils from Roots and Aerial Parts of Carpesium divaricatum, a Traditional Herbal Medicine and Wild Edible Plant from South-East Asia, Grown in Poland

2019

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Carpesium divaricatum Sieb. and Zucc. has long been used both as traditional medicine and seasonal food. The most extensively studied specialized metabolites synthesized by the plant are sesquiterpene lactones of germacrane-type. Low-molecular and volatile terpenoids produced by C. divaricatum, however, have never been explored. In this work, compositions of essential oils distilled from roots and shoots of C. divaricatum plants, cultivated either in the open field or in the glasshouse have been studied by GC-MS-FID supported by NMR spectroscopy. The analyses led to the identification of 145 compounds in all, 112 of which were localized in aerial parts and 80 in roots of the plants grown in the open field. Moreover, remarkable differences in composition of oils produced by aerial and underground parts of C. divaricatum have been observed. The major volatiles found in the shoots were: α-pinene (40%), nerol (4%) and neryl-isobutyrate (3%), whereas predominant components of the root oil were 10-isobutyryloxy-8,9-epoxythymyl-isobutyrate (29%), thymyl-isobutyrate (6%) and 9-isobutyryloxythymyl-isobutyrate (6%). In the analyzed oils, seventeen thymol derivatives were identified. Among them eight compounds were specific for roots. Roots of the plants cultivated in the glasshouse were, in general, a poor source of essential oil in comparison with those of the plants grown in the open field. Chemophenetic relationships with other taxa of the Inuleae-Inulineae were also briefly discussed.

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“…Aplotaxene is known to occur in roots of a number of thistle species, including Cirsium hypoleucum (Bohlmann and Abraham, 1981), Cirsium canum (L.) (Bohlmann and Abraham, 1981), Cirsium japonicum (Yano, 1977), Centaurea incana (Aclinou et al, 1982), Arctium lappa Linn. (Washino et al, 1985), C. tinctorius (Binder et al, 1975), Saussurea lappa Clarke (Klein and Thomel, 1976), and Inula racemosa (Bokadia et al, 1986). Binder et al (1975) found aplotaxene in seedlings of safflower.…”

Section: Discussionmentioning

confidence: 99%

Properties of an extract from Canada thistle roots that stimulates germination of dormant teliospores of Canada thistle rust (Puccinia punctiformis)

French¹,

Turner²,

Sonnett³

et al. 1988

J. Agric. Food Chem.

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A stimulator of teliospore germination was concentrated from thistle roots (Cirsium arvense) by steam distillation and extraction by hexane. Concentrations of 25 pL/L stimulated teliospore germination 50% in 7 days. Teliospores exposed to volatiles from crude extract at time intervals ranging from 1 min to 24 h reached a maximum germination plateau with 1 h or longer exposures when counted at 7 days. TLC, NMR, and GC-mass spectrometric analysis of the hexane extract indicated the presence of C17 unsaturated hydrocarbons with four, three, two, and one double bonds. 1-Pentadecene was also found. Most of the stimulatory activity occurred with the compound separated by TLC at Rt 0.26, shown to be (Z,Z,Z)-1,8,11,14-heptadecatetraene, or aplotaxene. The spot at Rf 0.60 contained 1-neptadecene and 1-pentadecene. These compounds were analyzed quantitatively by gas chromatography. Aplotaxene was found in thistle roots at concentrations of 0.032 pg/g of fresh roots. Synthetic aplotaxene was found to possess no stimulatory activity on Canada thistle rust teliospore germination.Canada thistle [Cirsium arvense (L.) Scop.] is a widely dispersed noxious weed that is difficult and expensive to control by herbicides. This plant is susceptible to a rust, Puccinia punctiformis, that is particularly devastating in the aecial stage. Infection is initiated from basidiospores produced by germinating teliospores. Turner et al. (1982) reported a biologically active substance from Canada thistle roots that stimulated teliospore germination.

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The essential oil of inula racemosa

Cited by 34 publications

References 5 publications

Potential of Inula racemosa root extract and its fractions to suppress root-knot nematode Meloidogyne incognita

Potential of Inula racemosa root extract and its fractions to suppress root-knot nematode Meloidogyne incognita

Composition of Essential Oils from Roots and Aerial Parts of Carpesium divaricatum, a Traditional Herbal Medicine and Wild Edible Plant from South-East Asia, Grown in Poland

Properties of an extract from Canada thistle roots that stimulates germination of dormant teliospores of Canada thistle rust (Puccinia punctiformis)

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