Journal ArticleDOI
Evaluation of phytotoxic activity of leaf and stem extracts and identification of a phytotoxic substance from Caesalpinia mimosoides Lamk.
Sutjaritpan Boonmee,Sutjaritpan Boonmee,Arihiro Iwasaki,Kiyotake Suenaga,Hisashi Kato-Noguchi +4 more
TLDR
In this article, aqueous methanol extracts of C. mimosoides leaves and stems were used to investigate the phytotoxicity of the leaves against the growth of different types of plants.Abstract:
Caesalpinia mimosoides (Fabaceae) has been used as a folk medicine and reported to have pharmacological properties. However, the phytotoxicity of C. mimosoides has not yet been studied. Therefore, the phytotoxic activity of C. mimosoides leaf and stem extracts was evaluated against the growth of dicotyledonous and monocotyledonous plants. Aqueous methanol extracts of C. mimosoides leaves and stems exhibited inhibitory effects on the growth of all the test plants. The growth of the test plants decreased with the increase of concentrations of the extracts. Comparison of the concentrations required for 50% growth inhibition (I50 values) indicates that the leaf extracts had more inhibitory effects than the stem extracts. Thus, the active substances in the leaf extracts were purified using column chromatographic separations and a growth inhibitory substance was isolated and identified as methyl gallate by using spectral analysis. This study reports the first isolation of methyl gallate in C. mimosoides leaves. Methyl gallate at 10 mM completely inhibited the growth of cress shoots and inhibited its roots by 4.7% of control growth. At the same concentration, the shoots and roots of barnyard grass were inhibited by 84.2 and 1.7% of control growth, respectively. I50 values of methyl gallate for the growth of cress and barnyard grass ranged from 2.3 to 2.9 and 0.3 to 30.5 mM, respectively. The results suggest that methyl gallate may be responsible for the phytotoxic effects of C. mimosoides.read more
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Allelopathy of Medicinal Plants: Current Status and Future Prospects in Weed Management
TL;DR: In this paper, a review paper has been prepared by comprehensive studies of various published research articles, books and proceedings available in the world literature about the allelopathic potentiality of medicinal plants, and its role on the development of bio-herbicides for eco-friendly weed management strategies to conserve bio-diversity and ecological balance.
Journal ArticleDOI
Allelopathic Potential and Active Substances from Wedelia Chinensis (Osbeck).
Kawsar Hossen,Krishna Rany Das,Krishna Rany Das,Krishna Rany Das,Shun Okada,Shun Okada,Arihiro Iwasaki,Kiyotake Suenaga,Hisashi Kato-Noguchi,Hisashi Kato-Noguchi +9 more
TL;DR: It is suggested that vanillic acid and gallic acid may be required for the growth inhibitory activities of Wedelia chinensis.
Journal ArticleDOI
Recent Advances in Saffron Soil Remediation: Activated Carbon and Zeolites Effects on Allelopathic Potential.
TL;DR: The results showed that the allelopathic effects of aqueous and methanolic extracts of SC remnant were significantly superior to those of 9-year-old SFS, and adsorbents may play a role in treating soils contaminated by allelochemicals.
Journal ArticleDOI
Evaluation of the Allelopathic Potential of Leaf Extracts from Dischidia imbricata (Blume) Steud. on the Seedling Growth of Six Test Plants
TL;DR: Results indicated that D. imbricata may possess allelopathy activity and may contain allelopathic substances.
Journal ArticleDOI
Evaluation of phytotoxic potential and identification of phytotoxic substances in Cassia alata Linn. leaves
TL;DR: Results indicate that the two identified active phytotoxic substances from C. alata may be responsible for its growth inhibitory properties.
References
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TL;DR: Impact of pesticides use in agriculture: their benefits and hazards, and the risks and benefits to human health.
Journal ArticleDOI
Secondary compounds as protective agents
TL;DR: Insect Chemoreceptors, Insect-deterrent Properties of Secondary Compounds, and the Complexity of Allelopathy.
Journal ArticleDOI
Ecophysiological aspects of allelopathy
Inderjit,Stephen O. Duke +1 more
TL;DR: Five aspects of allelochemicals are discussed from an ecophysiological perspective: biosynthesis, modes of release, mode of action, detoxification and prevention of autotoxicity, and joint action of alleLochemicals.
Journal Article
Phytochemistry of Medicinal Plants
TL;DR: The major classes of phytochemicals with disease-preventing functions are dietary fibre, antioxidants, anticancer, detoxifying agents, immunity-potentiating agents and neuropharmacological agents as discussed by the authors.
Journal ArticleDOI
Screening of antioxidant activity and antioxidant compounds of some edible plants of Thailand
TL;DR: In this article, a large number of plants, which have been used as food and herbs in Thailand, were investigated for their antioxidant activity by using a β-carotene bleaching method.