Phytotoxic Activity of the Natural Compound Norharmane on Crops, Weeds and Model Plants

Plants

Luz Cabeiras-Freijanes¹  David López-González¹  Manuel J. Reigosa¹  Adela M. Sánchez-Moreiras¹  David Ledo¹  Mercedes Verdeguer² 

[1] Department of Plant Biology and Soil Science, Faculty of Biology, University of Vigo, Campus Lagoas-Marcosende s/n, 36310 Vigo, Spain;Mediterranean Agroforestry Institute (MAI), Polytechnic University of Valencia, Camino de Vera s/n, 46022 Valencia, Spain;

关键词: norharmane;    phytotoxicity;    Arabidopsis thaliana;    crops;    weeds;    water stress;   

DOI  :  10.3390/plants9101328

来源: DOAJ

【 摘 要 】

Norharmane is a secondary metabolite that appears in different species of land plants. In this paper, we investigated for the first time the specificity of norharmane through germination and growth tests on some crops as Zea mays L. (maize), Triticum aestivum L. (wheat), Oryza sativa L. (rice) and Lactuca sativa L. (lettuce) and weeds as Amaranthus retroflexus L. (amaranth), Echinochloa crus-galli L. (barnyard grass), Plantago lanceolata L. (ribwort), Portulaca oleracea L. (common purslane) and Avena fatua L. (wild oat), and its phytotoxic capacity on the metabolism of adult Arabidopsis thaliana L. (thale cress) by measuring chlorophyll a fluorescence, pigment content, total proteins, osmotic potential and morphological analysis. Norharmane had an inhibitory effect on the germination of A. fatua and P. lanceolata, and the growth of P. oleracea, E. crus-galli and A. retroflexus. On adult A. thaliana plants, the compound was more effective to watering, leading to water stress that compromised the growth of the plants and ultimately affected the photosynthetic apparatus. Therefore, this research shows that norharmane not only affects seedlings’ metabolism, but also damages the metabolism of adult plants and can be a potential model for a future bioherbicide given its specificity.

【 授权许可】

Unknown