RT Journal T1 RHIZOTOXICITY OF THE INVASIVE SPECIES MELIA AZEDARACH: IMPLICATION OF PHENOLS ON ITS HERBICIDE POTENTIAL A1 M. Akacha A1 K. Lahbib A1 N. G. Boughanmi JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 27 IS 4 SP 1353 OP 1365 YR 2017 FD 2017/08/01 DO DOI NA AB

A biological invasion of non-native plants is spreading into our natural areas and rights-of way. In the present work, Melia azedarach (Meliaceae) known for its high allelopathic potential is used to investigate its bio-pesticide capacity on the common model used in bioassays: Raphanus sativus (R. sativus). Exposure of R. sativus to M. azedarach (aqueous/ethanolic) leaves extracts result on toxicity exclusively toward roots. The roots inhibition was dose dependent and more pronounced for ethanolic extract. Allelochemicals of M. azedarach ethanolic extracts induced an oxidative stress in radish focalized by a decrease on enzymatic anti-oxidant defense such superoxide dismutase (SOD) activity. However, the stimulation of phenyl-alanine ammonialyase (PAL) activity and the subsequent increase in phenols content failed to alleviate R. Sativus roots oxidative stress. Importantly, the result of M. azedarach leaves extracts inducing oxidative imbalance in roots seemed to be harmful in vivo on R. sativus but exceeded its antioxidant abilities in vitro. M. azedarach invasive species might be valorized, in Tunisia, by developing “root killers” bio-herbicides and enhancing biological proprieties of received plant.

K1 Melia azedarach, raphanus sativus,rhizotoxicity, oxidative stress and bio-herbicide PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2017-JAPS-171