Rym Boukhalfa , Claudia Ruta , Saida Messgo-Moumene , Generosa J. Calabrese , Maria Pia Argentieri , Giuseppe De Mastro
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引用次数: 0
Abstract
The bioherbicidal potential of four essential oils (EOs) from Mediterranean species of Thymus sp. pl.: Thymus algeriensis Boiss. et Reut., T. ciliatus Desf. subspecies coloratus (Boiss. et Reut.) Batt., T. vulgaris L., ecotype Fasano and T. vulgaris L. var. Varico was investigated to identify new sources of biomolecules. In vivo assays were carried out to assess the effect of the EOs on pre and post-emergence of two weed species: Lolium perenne L. and Amaranthus retroflexus L. Four concentrations of EO emulsions (5, 7.5, 10 and 20 µL/mL) were applied. All essential oils (EOs) exhibited the strongest herbicidal activity at the highest tested concentration (20 µL/mL), completely inhibiting seed germination (100 %) in the Vithal control, whereas lower concentrations were less effective. On the contrary, for post-emergence experiments and compared to the positive control, L. perenne showed resistance to the EOs while A. retroflexus was highly sensitive, arguing a selectivity of the EOs. Additionally, cytological analysis were performed on the model plant Arabidopsis thaliana (L.) Heynh, for a better understanding of the structural modifications induced by the EOs. The root system of EO-treated A. thaliana seedlings was highly damaged.
地中海种胸腺属植物(thyymus sp. pl.)四种精油的生物除草潜力。et Reut。纤毛虫;亚种花莲et Reut)。棉絮。为寻找新的生物分子来源,对不同生态型的褐飞虱(T. vulgaris L. var. Varico)、褐飞虱(T. vulgaris L. var. Varico)进行了研究。采用四种浓度(5、7.5、10和20 µL/mL)的EO乳剂对两种杂草(黑麦草和逆花苋)萌发前后的影响进行了体内实验。所有精油(EOs)在最高浓度(20 µL/mL)表现出最强的除草活性,在Vithal对照中完全抑制种子萌发(100 %),而较低浓度的效果较差。相反,在羽化后实验中,与阳性对照相比,白花蒿对雌二醇表现出抗性,而逆行蒿对雌二醇表现出高度敏感性,说明雌二醇具有选择性。此外,还对模式植物拟南芥(Arabidopsis thaliana, L.)进行了细胞学分析。为了更好地理解EOs引起的结构变化。eo处理的拟南芥幼苗根系受到严重破坏。
期刊介绍:
Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.