| Full text | |
| Author(s): |
Marins Ocampos, Fernanda Maria
[1]
;
Borim de Souza, Ana Julia
[2]
;
Antar, Guilherme Medeiros
[3]
;
Wouters, Felipe Christoff
[4]
;
Colnago, Luiz Alberto
[1]
Total Authors: 5
|
| Affiliation: | [1] Embrapa Instrumentacao, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Estadual Paulista Julio de Mesquita Filho UN, Fac Ciencias, BR-17033360 Bauru, SP - Brazil
[3] Univ Sao Paulo, Inst Biociencias, Dept Bot, BR-05508090 Sao Paulo, SP - Brazil
[4] Univ Fed Sao Carlos UFSCar, Dept Quim, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Molecules; v. 26, n. 14 JUL 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Phenylphenalenones, metabolites found in Schiekia timida (Haemodoraceae), are a class of specialized metabolites with many biological activities, being phytoalexins in banana plants. In the constant search to solve the problem of glyphosate and to avoid resistance to commercial herbicides, this work aimed to investigate the phytotoxic effect of the methanolic extract of S. timida seeds. The chemical composition of the seed extract was directly investigated by NMR and UPLC-QToF MS and the pre- and post-emergence phytotoxic effect on a eudicotyledonous model (Lactuca sativa) and a monocotyledonous model (Allium cepa) was evaluated through germination and seedling growth tests. Three concentrations of the extract (0.25, 0.50, and 1.00 mg/mL) were prepared, and four replicates for each of them were analyzed. Three major phenylphenalenones were identified by NMR spectroscopy: 4-hydroxy-anigorufone, methoxyanigorufone, and anigorufone, two of those reported for the first time in S. timida. The presence of seven other phenylphenalenones was suggested by the LC-MS analyses. The phenylphenalenone mixture did not affect the germination rate, but impaired radicle and hypocotyl growth on both models. The effect in the monocotyledonous model was statistically similar to glyphosate in the lowest concentration (0.25 mg/mL). Therefore, although more research on this topic is required to probe this first report, this investigation suggests for the first time that phenylphenalenone compounds may be post-emergence herbicides. (AU) | |
| FAPESP's process: | 14/50918-7 - INCT 2014: for the Biorational Control of Pest-Insect and Phytopathogens |
| Grantee: | Maria Fátima das Graças Fernandes da Silva |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 12/25299-6 - Integrated studies for leaf cutting control |
| Grantee: | João Batista Fernandes |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 19/13656-8 - Development and application of nuclear magnetic resonance in products and agricultural processes |
| Grantee: | Luiz Alberto Colnago |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/00504-2 - NMR-based metabolomic investigation of potential natural agrochemicals from Schiekia orinocensis under biotic and abiotic stress |
| Grantee: | Fernanda Maria Marins Ocampos |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |