Compositions and methods comprising polynucleotides and polypeptides having ALS activity and tolerance to at least one ALS inhibitor are provided. In specific embodiments, the sequence has an increased preference for 2-ketobutyrate, when compared to an appropriate control, such as for example, HRA, and/or a preference for 2-ketobutyrate similar to a native ALS. Further provided are nucleic acid constructs, plants, plant cells, explants, seeds and grain having the ALS inhibitor tolerant sequences. Various methods of employing the ALS inhibitor tolerant sequences are provided. Such methods include methods for producing an ALS inhibitor tolerant plant, plant cell, explant or seed and methods of controlling weeds in a field containing a crop employing the plants and/or seeds disclosed herein.
本发明提供了包含具有 ALS 活性和对至少一种 ALS
抑制剂耐受性的多核苷酸和
多肽的组合物和方法。在具体的实施方案中,与适当的对照(例如 HRA)相比,该序列对
2-酮丁酸的偏好增加,和/或对
2-酮丁酸的偏好与原生 ALS 相似。此外,还提供了具有 ALS
抑制剂耐受序列的核酸构建体、植物、植物细胞、外植体、种子和谷物。还提供了采用耐 ALS
抑制剂序列的各种方法。这些方法包括生产耐 ALS
抑制剂的植物、植物细胞、外植体或种子的方法,以及在含有本文公开的植物和/或种子的作物田中控制杂草的方法。