Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

ioactive compound isolated from Conyza canadensis combined with physical treatments for the control of green mould in Orang

Full text
Author(s):
Terao, Daniel [1] ; Nascimento Queiroz, Sonia Claudia [1] ; Nunes Maia, Aline de Holanda [1]
Total Authors: 3
Affiliation:
[1] Empresa Brasileira Pesquisa Agr, Embrapa Melo Ambiente, CP 69, BR-13918110 Jaguariuna, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: JOURNAL OF PHYTOPATHOLOGY; v. 170, n. 3 JAN 2022.
Web of Science Citations: 0
Abstract

Green mould, caused by Penicillium digitatum, is the major postharvest disease of citrus in all producing countries. The control of this disease is carried out by fungicides in postharvest treatments, which can leave toxic residues in fruits. Therefore, the interest in cleaner technologies and alternatives to the use of fungicides, such as biopesticides, has grown in recent years. Conyza canadensis, an herbaceous weed spread all over the world, contains compounds which have significant activity against P. digitatum. Thus, the present research aimed to evaluate (4Z)-lachnophyllum lactone (LACH), isolated from C. canadensis, in combination with hot water brushing (HWB) and UV-C treatments, to control green mould and to preserve the quality of the fruit. LACH efficiently controlled green mould in orange cv. Valencia. The level of control improved from 24% to 42% according to the dose of LACH adopted, ranging from 10 to 100 mu g ml(-1) respectively. When in combination with HWB or UV-C, the efficiency of the control was enhanced from 50% to 78% with the lowest dose of LACH (10 mu g ml(-1)) and UV-C at 1.5 kJ m(-2), which showed no significant difference when the highest dose of LACH (100 mu g ml(-1)) was applied alone. This treatment delayed the onset of the disease symptoms. A biofungicide based on C. canadensis combined with UV-C and HWB is a potential natural control of green mould. (AU)

FAPESP's process: 18/25318-7 - Integrated technological process of postharvest treatment of fruits for the control of rot, with no use of agrochemicals
Grantee:Daniel Terao
Support Opportunities: Regular Research Grants