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

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Journal Plants (Basel)
Date 2020 Oct 14
PMID 33050191
Citations 4
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Abstract

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 L (maize), L. (wheat), L. (rice) and L. (lettuce) and weeds as L. (amaranth), L. (barnyard grass), L. (ribwort), L. (common purslane) and L. (wild oat), and its phytotoxic capacity on the metabolism of adult L. (thale cress) by measuring chlorophyll fluorescence, pigment content, total proteins, osmotic potential and morphological analysis. Norharmane had an inhibitory effect on the germination of and , and the growth of , and . On adult 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.

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