Download MendeleyTowards novel herbicide modes of action by inhibiting lysine biosynthesis in plants.
Soares da Costa, T.P., Hall, C.J., Panjikar, S., Wyllie, J.A., Christoff, R.M., Bayat, S., Hulett, M.D., Abbott, B.M., Gendall, A.R., Perugini, M.A.(2021) Elife 10
- PubMed: 34313586
- DOI: https://doi.org/10.7554/eLife.69444
- Primary Citation of Related Structures:
7MDS - PubMed Abstract:
Weeds are becoming increasingly resistant to our current herbicides, posing a significant threat to agricultural production. Therefore, new herbicides with novel modes of action are urgently needed. In this study, we exploited a novel herbicide target, dihydrodipicolinate synthase (DHDPS), which catalyses the first and rate-limiting step in lysine biosynthesis. The first class of plant DHDPS inhibitors with micromolar potency against Arabidopsis thaliana DHDPS was identified using a high-throughput chemical screen. We determined that this class of inhibitors binds to a novel and unexplored pocket within DHDPS, which is highly conserved across plant species. The inhibitors also attenuated the germination and growth of A. thaliana seedlings and confirmed their pre-emergence herbicidal activity in soil-grown plants. These results provide proof-of-concept that lysine biosynthesis represents a promising target for the development of herbicides with a novel mode of action to tackle the global rise of herbicide-resistant weeds.
Organizational Affiliation:
Department of Biochemistry and Genetics, La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Australia.
