Distinctive physiological and molecular responses of foxtail millet and maize to nicosulfuron

• DOI: 10.3389/fpls.2023.1308584
• Publication Date: 2024-01-16T04:32:14Z
• Authors: Boyu Lu; Ru Meng; Yiru Wang; Wei Xiong; Yuchao Ma; Peng Gao; Jianhong Ren; Liguang Zhang; Zhihai Zhao; Guangyu Fan; Yinyuan Wen; Xiangyang Yuan
• Keywords: Foxtail; Acetolactate synthase; Glutathione S-transferase

Introduction Nicosulfuron is the leading acetolactate synthase inhibitor herbicide product, and widely used to control gramineous weeds. Here, we investigated metabolic process of nicosulfuron into foxtail millet maize, in order clarify mechanism difference sensitivity maize from perspective physiological metabolism provide a theoretical basis for breeding nicosulfuron-resistant varieties. Methods We treated (Zhangzagu 10, Jingu 21) (Nongda 108, Ditian 8) with various doses both pot field experiments. The malonaldehyde (MDA) content, target enzymes, detoxification antioxidant as well related gene expression levels leaf tissues were measured, yield was determined after maturity. Results results showed that recommended dose caused Zhangzagu 10 21 fail harvest; sensitive variety (Ditian decreased by 37.09%, whereas resistant 108) did not decrease. stress increased CYP450 enzyme activity, MDA activity reduced (ALS) ALS 8, glutathione S-transferase (GST) GST millet. In conclusion, enzymes involved plants. are main factors responsible differences among millet, varieties, Discussion These findings offer valuable insights exploring resistance (TSR) non-target (NTSR) mechanisms under provides future research develop germplasm diverse traits.