Allelopathic Activity of Cymbopogon nardus (Poaceae): A Preliminary Study

Suwitchayanon, Prapaipit; Pukclai, Piyatida; Kato‐Noguchi, Hisashi

doi:10.5539/jps.v2n2p1

Cited by 8 publications

(7 citation statements)

References 14 publications

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“…On the other hand, the I50 values for root growth showed that lettuce was the most sensitive and Italian ryegrass was the least sensitive. Similar trends have been reported by Suwitchayanon et al (2013) and Krumsri et al (2019), who found that aqueous methanol extracts of Cymbopogon nardus and Dischidia imbricata showed the highest inhibitory potential against lettuce seedling growth and the lowest inhibition against barnyard grass, respectively. Additionally, El-Mergawi and Al-Humaid (2019) reported different inhibitory activity of Tamarix mannifera extracts against lettuce, barnyard grass, canary grass (Phalaris minor), and purslane (Portulaca oleracea).…”

Section: Discussionsupporting

confidence: 88%

Allelopathic potential of Acacia pennata (L.) Willd. leaf extracts against the seedling growth of six test plants

Kyaw

Kato‐Noguchi

2020

Not Bot Horti Agrobo

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Acacia pennata (L.) Willd (Mimosaceae), a woody climbing plant, is used as a traditional medicinal plant in the South and Southeast Asia regions and has been documented to have various pharmacological effects. However, the allelopathy of this plant still remains unclear. Thus, the allelopathic potential of A. pennata leaf extracts was examined against the seedling growth of dicot plants [alfalfa (Medicago sativa L.), cress (Lepidium sativum L.), and lettuce (Lactuca sativa L.)] and monocot plants [barnyard grass (Echinochloa crus-galli (L.) Beauv.), Italian ryegrass (Lolium multiﬂorum Lam.), and timothy (Phleum pratense L.)] at six different concentrations. The results showed that the A. pennata leaf extracts inhibited the seedling growth of all the test plant species at concentrations ≥3 mg dry weight (D.W.) equivalent extract mL-1. The inhibitory activity of the extracts against both shoot and root growth varied with concentration and tested plants. The concentrations required for 50% inhibition of the test plant shoots and roots were 1.5-16.1 and 1.4-8.6 mg D.W. equivalent extract mL-1, respectively. The root growth of all the test plant species was more sensitive to the extracts than their shoot growth, except alfalfa. The results of the present study indicate that the A. pennata leaf extracts may have allelopathic potential and may contain allelopathic substances. Therefore, further studies are required for isolation and identification of the growth inhibitory substances which are responsible for the allelopathic effect of A. pennata.

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Section: Discussionsupporting

confidence: 88%

Allelopathic potential of Acacia pennata (L.) Willd. leaf extracts against the seedling growth of six test plants

Kyaw

Kato‐Noguchi

2020

Not Bot Horti Agrobo

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“…Our previous studies confirmed that whole plants of C. nardus have strong inhibitory activity on common agricultural weeds such as barnyard grass, Italian ryegrass, jungle rice and timothy (Suwitchayanon et al, 2013). Therefore, in the present study, C. nardus was divided into three parts such as leaves, stalks and roots and investigated their allelopathic activities.…”

Section: Introductionmentioning

confidence: 52%

Allelopathic activity of leaves, stalks and roots of Cymbopogon nardus

Suwitchayanon

Kato‐Noguchi

2014

Emir. J. Food Agric

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In this study, leaves, stalks and roots of Cymbopogon nardus were separately evaluated to determine the most active parts that contained the strong growth inhibitory activity. Each aqueous methanol extracts of Cymbopogon nardus were determined their allelopathic activity by using six test plant species; alfalfa (Medicago sativa L.), cress (Lepidum sativum L.), lettuce (Lactuca sativa L.), barnyard grass (Echinochloa crus-galli L.), Italian ryegrass (Lolium moltiflorum Lam.) and jungle rice (Echinochloa colonum (L.) P. Beauv.). Four extract concentrations (0.01, 0.03, 0.1 and 0.3 g dry weight equivalent extract/mL) were used for the bioassay. The results showed that these three extracts have inhibitory activity and the percent inhibition increased concentration dependently. However, the inhibitory activity of leaf and root extracts was more effective than stalk extract at 95% level of significance. Barnyard grass, Italian ryegrass and jungle rice were the most sensitive to the leaf, stalk and root extracts, respectively. The concentrations required for 50% growth inhibition of C. nardus leaf, stalk and root extracts on all test plants were 0.000-0.025, 0.009-0.077 and 0.003-0.023 g dry weight equivalent extract/mL, respectively. In addition, separation of these extracts through silica gel column indicated that root extract contained the most active fractions with strong growth inhibition. The present results suggest that C. nardus may have allelopathic compounds and the root extracts have the greatest inhibitory activity. Studies are in progress for the isolation and identification of allelopathic compounds in aqueous methanol extracts of C. nardus roots for the development of natural herbicides.

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“…Khanuja et al (2005) reported the essential oils of Cymbopogon citratus to exhibit allelopathic activity and affect seed germination and growth of corn and barnyard grass. Inhibitory effects of C. nardus on the shoot and root growth of cress, lettuce, rapeseed and Italian ryegrass were also observed by Prapaipit et al (2013). Kaiira et al (2019) observed no Striga hermonthica weed in rice mulched with C. nardus and attributed it to influences of compounds released by C. nardus.…”

Section: Discussionmentioning

confidence: 87%

Profiles of Compounds in Stover of Rice, Cymbopogon, Desmodium, Mucuna and Maize

Kaiira¹,

Chemining’wa²,

Ayuke³

et al. 2021

JAS

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Crop residues and mulches release phytotoxic substances into the soil that affect plant growth. An experiment was conducted at the Uganda National Crop Resources Research Institute, Namulonge during 2016, to identify compounds in the stover of potted Cymbopogon nardus, Desmodium uncinatum, Oryza sativa, (NERICA 1), Mucuna pruriens and Zea mays (LONGE 6H) at fourty five days after germination. This marked near the average stationary phase for test crops’ growth when secondary metabolites are maximum. Organic compounds in the stover were extracted using solid phase micro-extraction. Samples were subjected to analysis using a 7890A Gas Chromatography system. Data files were transferred into a distinct folder and data was uploaded onto XCMS online platform for pair wise comparison and other related statistical analysis in the National institute of Science and Technology library. Ten terpenoids and one ester were identified in cymbopogon stover. Desmodium stover released six terpenoids and three phenols. Rice stover produced six terpenoids, three phenolic compounds and one ester. Mucuna stover released two terpenoids and four phenols. The maize stover produced five terpenoids and four phenolic compounds. Profiled compounds from cymbopogon, desmodium, rice, mucuna and maize could be responsible for the reported negative allelopathic effects such as auto-toxicity and suppression of companion crops expressed in agricultural ecosystems. Allelopathic activity of the profiled compounds should be confirmed through bioassays extracts and residues studies. The development and incorporation of the profiled metabolites into agricultural management system may lead to the production of bio-herbicides that reduce environmental degradation and increase crop productivity.

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Allelopathic Activity of Cymbopogon nardus (Poaceae): A Preliminary Study

Cited by 8 publications

References 14 publications

Allelopathic potential of Acacia pennata (L.) Willd. leaf extracts against the seedling growth of six test plants

Allelopathic potential of Acacia pennata (L.) Willd. leaf extracts against the seedling growth of six test plants

Allelopathic activity of leaves, stalks and roots of Cymbopogon nardus

Profiles of Compounds in Stover of Rice, Cymbopogon, Desmodium, Mucuna and Maize

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