TAILIEUCHUNG - cPre-emergence application of (thio)urea analogues compromises the development of the weed species Bidens pilosa, Urochloa brizantha, and Urochloa decumbens

Invasive species (weeds) contribute to great losses in crop productivity, and one of the strategies for controlling their distribution in the field involves the use of herbicides. However, the development of new formulations for the control of weeds is challenged by environmental issues, increases in the resistance of weeds to herbicides, and poor selectivity of herbicides towards invasive species. Here, by using preemergence experiments, we assessed the phytotoxicity of two (thio)urea analogues (2A10 and 2B2) against the weed species Bidens pilosa (a dicot), Urochloa brizantha and Urochloa decumbens (monocots). Similar to diuron (400 mM), which is a commercial urea analogue herbicide, the urea analogue 2A10 (>200 mM) was lethal to B. pilosa. Although 2A10 failed to disrupt the germination of U. brizantha seeds, this compound (600 mM) inhibited the accumulation of chlorophyll a and b and carotenoids and resulted in the development of seedlings that presented relatively short roots and small, chlorotic leaves. Moreover, the thiourea analogue 2B2 (600 mM) reduced the germination percentage of U. decumbens seeds and delayed their germination, and at a concentration of 800 mM, this analogue impaired root growth and blocked the formation of lateral roots. | cPre-emergence application of (thio)urea analogues compromises the development of the weed species Bidens pilosa, Urochloa brizantha, and Urochloa decumbens

• Sinh học
• Biginelli adducts
• Dihydropyrimidin 2(1H) ones thiones
• Weed control
• Pre emergence application
• The weed species Bidens pilosa
• Urochloa decumbens
• Antiproliferative activity cancer
• Calcium channel
• Antimicrobial activity
• Notable pharmacological properties