Potential Allelochemicals from an Invasive Weed Mikania micrantha H.B.K.

  title={Potential Allelochemicals from an Invasive Weed Mikania micrantha H.B.K.},
  author={Hua Shao and Shaolin Peng and Xiaoyi Wei and Deqing Zhang and Chi Zhang},
  journal={Journal of Chemical Ecology},
Phytotoxicity-directed extraction and fractionation of the aerial parts of Mikania micrantha H.B.K. led to the isolation and identification of three sesquiterpenoids: dihydromikanolide, deoxymikanolide, and 2,3-epoxy-1-hydroxy-4,9-germacradiene-12,8:15,6-diolide. These sesquiterpenoids inhibited both germination and seedling growth of tested species with deoxymikanolide possessing the strongest phytotoxicity. In a bioassay against lettuce (Lectuca sativa L.), deoxymikanolide reduced radicle… 

Identification and comparison of allelopathic effects from leaf and flower volatiles of the invasive plants Mikania micrantha

It was concluded that terpenoids released through volatilization have an important role in the allelopathic effect of M. micrantha, and the oxygenated monoterpene α-terpineol played a crucial role in these effects.

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The results indicate that these compounds could contribute to the invasion of O. acanthium in ecological systems and agricultural fields.

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C. odorata and M. micrantha show allelopathic properties when used as cover crop and mulch by controlling the growth of A. conyzoides and C. iria at all seedling growth parameters and the speed of germination index was the most sensitive compared to that of the other indices.

Effects of Mikania micrantha wilt virus infection on photosynthesis and the activities of four enzymes in Mikania micrantha H.B.K.

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Effects of aqueous extracts and decomposition of Mikania micrantha H.B.K. debris on selected agronomic crops

Germination percentage, radicle length and fresh weight of two crops, Chinese cabbage and tomato, decreased progressively when plants were exposed to increasing concentrations of aqueous extract of Mikania, but did not affect those of corn and long bean seedlings.

Allelochemical Potential of Metopium brownei

The aqueous leachates, organic extracts, and the mixtures of flavonoids and urushiols were inhibitory to the growth of test plants and phytopathogenic fungi.

Sesquiterpene Lactones from Mikania micrantha.

As part of a study of Argentine Compositae, the chemical composition of M .

Effects of Mikania micrantha H.B.K. on germination and growth of weed species

The plant height of the test species decreased with increasing amounts of debris when either leaf or root debris of Mikania was present on the soil surface or incorporated into the soil.

First Isolation of Natural Cyanamide as a Possible Allelochemical from Hairy Vetch Vicia villosa

Cyanamide was isolated from the leaves and stems of hairy vetch, guided by plant growth inhibitory activity against lettuce seedlings, demonstrating cyanamide biosynthesis in the seedlings.

Allelopathic Potential of Aquatic Plants Associated with Wild Rice (Zizania palustris): I. Bioassay with Plant and Lake Sediment Samples

The allelopathic potential of eight aquatic plants associated with wild rice was investigated using lettuce and wild rice seedling bioassays and did not yield any conclusive evidence that the wild rice-associated aquatic plants have allelopathy effects on wild rice.

Can failure be turned into success for biological control of mile-a-minute weed (Mikania micrantha)?

Progress on biological control of Mikania micrantha Kunth and other weeds of developing countries is discussed in light of the availability and continuity of funding, and Comparisons are drawn between the developed world where a long-term commitment with adequate funding is now generally recognised as necessary, and the developing world, where short-term donor funding makes long- term funding difficult or impossible to obtain.