| Full text | |
| Author(s): Show less - |
Kátia R. Prieto
[1]
;
Lívia S. de Medeiros
[2]
;
Marsele M. Isidoro
[3]
;
Leonardo Toffano
[4]
;
Maria Fátima G. F. da Silva
[5]
;
João B. Fernandes
[6]
;
Paulo C. Vieira
[7]
;
Moacir R. Forim
[8]
;
Edson Rodrigues-Filho
[9]
;
Rodrigo M. Stuart
[10]
;
Marcos A. Machado
[11]
Total Authors: 11
|
| Affiliation: Show less - | [1] Universidade Federal de São Carlos. Departamento de Química - Brasil
[2] Universidade Federal de São Carlos. Departamento de Química - Brasil
[3] Universidade Federal de São Carlos. Departamento de Química - Brasil
[4] Universidade Federal de São Carlos. Departamento de Química - Brasil
[5] Universidade Federal de São Carlos. Departamento de Química - Brasil
[6] Universidade Federal de São Carlos. Departamento de Química - Brasil
[7] Universidade Federal de São Carlos. Departamento de Química - Brasil
[8] Universidade Federal de São Carlos. Departamento de Química - Brasil
[9] Universidade Federal de São Carlos. Departamento de Química - Brasil
[10] Instituto Agronômico. Centro APTA Citros Sylvio Moreira - Brasil
[11] Instituto Agronômico. Centro APTA Citros Sylvio Moreira - Brasil
Total Affiliations: 11
|
| Document type: | Journal article |
| Source: | Journal of the Brazilian Chemical Society; v. 27, n. 8, p. 1493-1505, 2016-08-00. |
| Abstract | |
A methanol-soluble fraction of the dichloromethane extract from the culture broth of A. alternata AT4303 strain afforded the following five known mycotoxins: alternariol, alternariol monomethyl ether, altenusin, altenuene and altertoxin I. A hexane-soluble fraction of the dichloromethane extract yielded the steroids ergosterol and ergosterol peroxide, and alternariol monomethyl ether. The concentrated ethyl acetate extract afforded the nucleoside uridine, uracil and inosine. The micro-extracts obtained from this strain in solid media were analyzed using liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS), and the following five known toxins were identified: ACTG-C, D, E and F and AK-toxin II. The major toxins produced by the tangerine pathotype ACT-toxins appear to be absent in strain AT4303. However, the low concentration of ACT-toxins appears to be responsible for their lack of detection in this study. Some compounds isolated from citrus plants were tested for in vitro activity against this strain. The results indicated that 17.3 µM apigenin-7-O-rutinoside inhibited by 80% conidial germination and appressorium development. (AU) | |
| 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: | 08/57859-5 - Biorrational control of insect pests |
| Grantee: | Maria Fátima das Graças Fernandes da Silva |
| Support Opportunities: | Research Projects - Thematic Grants |