{"title":"Synthesis and biological evaluation of trifluoromethyl-containing auxin derivatives.","authors":"Mitsuaki Yamashita, Fuki Saneoka, Aozora Sano, Towa Arakawa, Akira Iida","doi":"10.1584/jpestics.D25-026","DOIUrl":null,"url":null,"abstract":"<p><p>This study focused on the chemical synthesis of auxin analogs, wherein a trifluoromethyl group was introduced near the carboxyl group in the side chain of natural and synthetic auxins, including IAA, NAA, IBA, 2,4-D, and 4-Cl-IAA. The effects of these synthetic compounds and natural auxins on plant growth regulation and callus growth were evaluated. In experiments with black gram, CF<sub>3</sub>-IAA and 4-Cl-CF<sub>3</sub>-IAA exhibited comparable effects to the parent compound, IAA. Meanwhile, CF<sub>3</sub>-NAA, CF<sub>3</sub>-2,4-D, CF<sub>3</sub>-IBA-1, and CF<sub>3</sub>-IBA-2 displayed effects that differed considerably from those of their respective parent auxins. In experiments with lettuce, CF<sub>3</sub>-IAA, 4-Cl-CF<sub>3</sub>-IAA, CF<sub>3</sub>-NAA, CF<sub>3</sub>-2,4-D, and CF<sub>3</sub>-IBA-1 showed effects comparable to the corresponding parent auxins. However, at low concentrations, these analogs induced hypocotyl and root elongations, a response distinct from that observed with their parent compounds. Furthermore, CF<sub>3</sub>-IBA-2 considerably promoted hypocotyl and root elongations across all concentrations relative to the control. The addition of synthetic compounds to callus cultures revealed that CF<sub>3</sub>-IAA, 4-Cl-CF<sub>3</sub>-IAA, CF<sub>3</sub>-NAA, and CF<sub>3</sub>-2,4-D promoted callus proliferation, whereas CF<sub>3</sub>-IBA-1 and CF<sub>3</sub>-IBA-2 did not enhance callus growth.</p>","PeriodicalId":16712,"journal":{"name":"Journal of Pesticide Science","volume":"50 3","pages":"64-73"},"PeriodicalIF":1.8000,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12405010/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Pesticide Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1584/jpestics.D25-026","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENTOMOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
This study focused on the chemical synthesis of auxin analogs, wherein a trifluoromethyl group was introduced near the carboxyl group in the side chain of natural and synthetic auxins, including IAA, NAA, IBA, 2,4-D, and 4-Cl-IAA. The effects of these synthetic compounds and natural auxins on plant growth regulation and callus growth were evaluated. In experiments with black gram, CF3-IAA and 4-Cl-CF3-IAA exhibited comparable effects to the parent compound, IAA. Meanwhile, CF3-NAA, CF3-2,4-D, CF3-IBA-1, and CF3-IBA-2 displayed effects that differed considerably from those of their respective parent auxins. In experiments with lettuce, CF3-IAA, 4-Cl-CF3-IAA, CF3-NAA, CF3-2,4-D, and CF3-IBA-1 showed effects comparable to the corresponding parent auxins. However, at low concentrations, these analogs induced hypocotyl and root elongations, a response distinct from that observed with their parent compounds. Furthermore, CF3-IBA-2 considerably promoted hypocotyl and root elongations across all concentrations relative to the control. The addition of synthetic compounds to callus cultures revealed that CF3-IAA, 4-Cl-CF3-IAA, CF3-NAA, and CF3-2,4-D promoted callus proliferation, whereas CF3-IBA-1 and CF3-IBA-2 did not enhance callus growth.
期刊介绍:
The Journal of Pesticide Science publishes the results of original research regarding the chemistry and biochemistry of pesticides including bio-based materials. It also covers their metabolism, toxicology, environmental fate and formulation.