English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Hyptis suaveolens  (Lamiaceae) is an exotic invasive plant in many countries. Earlier studies reported that the aqueous, methanol, and aqueous methanol extract of  H. suaveolens  and its residues have phytotoxic properties. However, to date, the phytotoxic substances of this plant have not been reported. Therefore, the objectives of this study were isolation and identification of phytotoxic substances of  H. suaveolens . Aqueous methanol extract of this plant was purified by several chromatographic runs through bioassay guided fractionation using garden cress ( Lepidium sativum ) as a test plant. Final purification of a phytotoxic substance was achieved by reverse phase HPLC and characterized as 14 α -hydroxy-13 β -abiet-8-en-18-oic acid (suaveolic acid) by high-resolution ESI-MS,  1 H-, 13 C-NMR, CD, and specific rotation. Suaveolic acid inhibited the shoot growth of garden cress, lettuce ( Lactuca sativa ), Italian ryegrass ( Lolium multiflorum ), and barnyard grass ( Echinochloa crus-galli ) at concentrations greater than 30  µ M. Root growth of all but lettuce was also inhibited at concentrations greater than 30  µ M. The inhibitory activities were concentration dependent. Concentrations required for 50% growth inhibition of suaveolic acid for those test plant species were ranged from 76 to 1155  µ M. Therefore, suaveolic acid is phytotoxic and may be responsible for the phytotoxicity of  H. suaveolens  plant extracts.

Suaveolic Acid: A Potent Phytotoxic Substance ofHyptis suaveolens