Comparative phytotoxicity of artemisinin and several sesquiterpene analogues

Dayan, Franck E.; Hernández, A.; Allen, Stacy N.; Moraes, Rita M.; Vroman, Jeffrey A.; Avery, Mitchell A.; Duke, Stephen O.

doi:10.1016/s0031-9422(98)00568-8

Cited by 91 publications

(59 citation statements)

References 19 publications

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“…The inhibitory action of artemisinin on target species growth could be attributed to the overproduction of reactive oxygen species and subsequence lipid peroxidation and arrested cell division (Dayan et al, 1999;Yan et al, 2015). Moreover, artemisinin was reported to possess strong anti-algal activity against Microcystis aeruginosa (Ni et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

Germination and seedling growth of barley as affected by Artemisia annua water extract

Salman¹,

Salameh²,

Abu-Romman³

2017

Plant Omics

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Laboratory and greenhouse pot experiments were conducted to assess the allelopathic effects of Artemisia annua water extract on germination and growth of barley. Lower concentrations of A. annua water extract (0.5 and 1.0 %) did not affect the germination of barley seeds. However, higher concentrations (1.5-3.5 %) resulted in significant reductions in the germination percentage. Seedling growth of barley was also affected by A. annua water extract. Both shoot and root lengths were negatively affected by A. annua water extract and the degree of inhibition was concentration dependent. When barley seedlings were subjected to 0.5% extract concentration, shoot length was inhibited by 6% while root length showed 18.5% inhibition over control seedlings. The lowest shoot and root lengths were recorded at 3.0 and 3.5 % water extract. At 0.5 % extract concentration, shoot and root fresh and dry weights were significantly unaffected compared with the control. Shoot fresh weight was significantly unaltered when seedlings were treated with 1.0 % extract. However, at the same concentration root fresh weight, shoot dry weight, and root dry weight were inhibited by 44.7, 33.3, and 40 %, respectively. The present results confirmed that root growth (length and weight) was more sensitive to A. annua water extract than shoot growth. The present results also indicated the presence of water soluble allelochemicals in A. annua that are able to inhibit growth of barley.

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Section: Resultsmentioning

confidence: 99%

Germination and seedling growth of barley as affected by Artemisia annua water extract

Salman¹,

Salameh²,

Abu-Romman³

2017

Plant Omics

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“…Active at low concentrations these compounds exhibit specific structure-activity relationship (Beekman et al 1997). Among several biologically active compounds, the phytotoxic potential of sesquiterpene lactones has long been established (Dalvi et al 1971, Dayan et al 1999. Possible roles of these terpenes in regulating hydrolytic enzymes including amylases, de novo synthesized in germinating seeds, can not be overruled.…”

Section: Resultsmentioning

confidence: 99%

Effect of some Essential Oils on Seed Germination and Seedling Length of <i>Parthenium hysterophorous</i> L.

Paudel

Gupta

2009

Ecoprint

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Effect of plant essential oils on seed germination and seedling growth of Parthenium hysterophorus was examined. Essential oils of Eucalyptus, Camphor, and Lemongrass were used in the experiments at different concentrations (0 to 20 ml.l -1 ). Water imbibed (36 h) seeds were germinated at 25°C ± 1 in petriplates containing 3 layers of filter papers soaked in distilled water and added with 1.5 ml of a given essential oil of particular concentration. Experiments were carried out taking three replicas.Observations were made at an interval of 24 h from the 4 th day of incubation till 20 th . All essential oils significantly (P<0.05) reduced seed germination irrespective of their sources. Effects of plant sources were, however, not significant (P>0.05).

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“…Sesquiterpenos provenientes de Artemisia annua provocaram inibição do crescimento radicular de sementes de alface e azevém (Dayan et al, 1999). O sesquiterpeno artemisinina reduziu a mitose em células do meristema apical de raízes de cebola e afetou diretamente a divisão celular das sementes indicadoras de alface e azevém.…”

Section: Resultsunclassified

Determinação de espécie indicadora e comparação de genótipos de girassol quanto ao potencial alelopático

et al. 2009

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RESUMO -Na agricultura atual, o método mais utilizado para o controle de plantas daninhas é o químico, em razão da facilidade de uso, elevada eficiência e baixa necessidade de mão de obra. No entanto, a utilização inadequada desses produtos provoca problemas ao ambiente e à saúde humana. Cresce, portanto, a busca por métodos alternativos de controle de plantas daninhas, menos demandadores de energia e menos tóxicos e agressivos ao ambiente. Este trabalho objetivou avaliar o efeito alelopático da cultura do girassol (Helianthus annuus) sobre diferentes espécies de plantas daninhas e cultivadas, em dois experimentos realizados em delineamento experimental completamente casualizado, utilizando o método da semeadura em substituição. O primeiro experimento foi realizado com quatro repetições, em esquema bifatorial. O primeiro fator foi constituído por seis espécies indicadoras: picão-preto (Bidens pilosa), corda-de-viola (Ipomoea grandifolia), caruru (Amaranthus hybridus), alface (Lactuca sativa, cultivar Aurélia), tomate (Lycopersicon esculentum, cultivar Santa Cruz), trigo (Triticum aestivum, cultivar BRS 208); e o segundo, pela presença ou não de plântulas de girassol. O segundo experimento foi composto por 24 tratamentos, representados por 23 genótipos de girassol e por uma testemunha sem girassol, utilizando-se quatro repetições. A espécie indicadora foi apenas o picão-preto. Em ambos os experimentos, no final do período de sete dias de convívio, foram avaliados o número de sementes germinadas e o comprimento radicular e da parte aérea das espécies indicadoras. Não foram observadas diferenças entre as porcentagens de germinação de quaisquer das espécies indicadoras avaliadas, em função da presença ou não das plântulas de girassol. A presença de plântulas de girassol estimulou o crescimento radicular das plântulas de tomate e trigo e inibiu o crescimento da parte aérea de picão-preto, trigo e corda-de-viola. Houve grande variabilidade de potencial alelopático entre genótipos de girassol sobre a germinação e o crescimento radicular e da parte aérea de Bidens pilosa. Os resultados demonstram que a técnica da semeadura em substituição é adequada para detectar efeitos estimulativos ou inibitórios de girassol sobre espécies indicadoras e para discriminar genótipos de girassol quanto à habilidade em inibir ou estimular plântulas de Bidens pilosa.Palavras-chave: alelopatia, semeadura de substituição, seleção de espécie indicadora, seleção de genótipos.ABSTRACT -In modern agriculture, the chemical method is the most used for weed control because it is highly efficient, easy to apply, and demands limited labor. However, the inadequate use of chemical products can lead to environmental and human health problems. Thus, there is a growing need to search for alternative weed control methods using substances which are less energy-demanding, less toxic and less aggressive to the environment. This work aimed to evaluate the allelopathic potential of sunflower (Helianthus annuus) culture on different weed and cultivated

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Comparative phytotoxicity of artemisinin and several sesquiterpene analogues

Cited by 91 publications

References 19 publications

Germination and seedling growth of barley as affected by Artemisia annua water extract

Germination and seedling growth of barley as affected by Artemisia annua water extract

Effect of some Essential Oils on Seed Germination and Seedling Length of <i>Parthenium hysterophorous</i> L.

Determinação de espécie indicadora e comparação de genótipos de girassol quanto ao potencial alelopático

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