ArticlePloS one2015
Physiological and Molecular Mechanisms of Differential Sensitivity of Palmer Amaranth (Amaranthus palmeri) to Mesotrione at Varying Growth Temperatures.
Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 90 citations in OpenAlex.
- Effect of Different Temperatures on Herbicide Efficacy for the Management of the Invasive WeedPlants (Basel, Switzerland) · 2025Article
- Divergent Cross-Adaptation of Herbicide-Treated Wheat and Triticale Affected by Drought or Waterlogging.International journal of molecular sciences · 2023Article
- Article
- Recurrent Selection with Sub-Lethal Doses of Mesotrione Reduces Sensitivity inPlants (Basel, Switzerland) · 2021Article
- Future efficacy of pre-emergence herbicides in corn (Zea mays) is threatened by more variable weather.Pest management science · 2021Article
- Herbicide Resistance: Another Hot Agronomic Trait for Plant Genome Editing.Plants (Basel, Switzerland) · 2021Review
- Based on the Virtual Screening of Multiple Pharmacophores, Docking and Molecular Dynamics Simulation Approaches toward the Discovery of Novel HPPD Inhibitors.International journal of molecular sciences · 2020Article
- Characterization, Genetic Analyses, and Identification of QTLs Conferring Metabolic Resistance to a 4-Hydroxyphenylpyruvate Dioxygenase Inhibitor in Sorghum (Frontiers in plant science · 2020Article
- Evolution of Target-Site Resistance to Glyphosate in anPlants (Basel, Switzerland) · 2019Article
- Rapid metabolism increases the level of 2,4-D resistance at high temperature in common waterhemp (Amaranthus tuberculatus).Scientific reports · 2019Article
- Non-Target-Site Resistance to Herbicides: Recent Developments.Plants (Basel, Switzerland) · 2019Review
- High [COFrontiers in plant science · 2019Article
- Extrachromosomal circular DNA-based amplification and transmission of herbicide resistance in crop weedProceedings of the National Academy of Sciences of the United States of America · 2018Article
- Hyperspectral Technologies for Assessing Seed Germination and Trifloxysulfuron-methyl Response inFrontiers in plant science · 2017Article
- Unraveling the Transcriptional Basis of Temperature-Dependent Pinoxaden Resistance inFrontiers in plant science · 2017Article
- Physiological and Molecular Characterization of Hydroxyphenylpyruvate Dioxygenase (HPPD)-inhibitor Resistance in Palmer Amaranth (Frontiers in plant science · 2017Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Herbicide efficacy is known to be influenced by temperature, however, underlying mechanism(s) are poorly understood. A marked alteration in mesotrione [a 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor] efficacy on Palmer amaranth (Amaranthus palmeri S. Watson) was observed when grown under low- (LT, 25/15 °C, day/night temperatures) and high (HT, 40/30° C) temperature compared to optimum (OT, 32.5/22.5 °C) temperature. Based on plant height, injury, and mortality, Palmer amaranth was more sensitive to mesotrione at LT and less sensitive at HT compared to OT (ED50 for mortality; 18.5, 52.3, and 63.7 g ai ha-1, respectively). Similar responses were observed for leaf chlorophyll index and photochemical efficiency of PSII (Fv/Fm). Furthermore, mesotrione translocation and metabolism, and HPPD expression data strongly supported such variation. Relatively more mesotrione was translocated to meristematic regions at LT or OT than at HT. Based on T50 values (time required to metabolize 50% of the 14C mesotrione), plants at HT metabolized mesotrione faster than those at LT or OT (T50; 13, 21, and 16.5 h, respectively). The relative HPPD:CPS (carbamoyl phosphate synthetase) or HPPD:β-tubulin expression in mesotrione-treated plants increased over time in all temperature regimes; however, at 48 HAT, the HPPD:β-tubulin expression was exceedingly higher at HT compared to LT or OT (18.4-, 3.1-, and 3.5-fold relative to untreated plants, respectively). These findings together with an integrated understanding of other interacting key environmental factors will have important implications for a predictable approach for effective weed management.
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