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2 results on '"orcinol and tyrosol"'

1. On the metabolites produced by Colletotrichum gloeosporioides a fungus proposed for the Ambrosia artemisiifolia biocontrol; spectroscopic data and absolute configuration assignment of colletochlorin A.

Author

Masi, Marco, Zonno, Maria Chiara, Cimmino, Alessio, Reveglia, Pierluigi, Berestetskiy, Alexander, Boari, Angela, Vurro, Maurizio, and Evidente, Antonio

Abstract

Ambrosia artemisiifolia L. is responsible for serious allergies induced on humans. Different approaches for its control were proposed during the COST Action FA1203 “Sustainable management of Ambrosia artemisiifolia in Europe” (SMARTER). Fungal secondary metabolites often show potential herbicidal activity. Three phytotoxins were purified from the fungal culture filtrates of Colletotrichum gloeosporioides, isolated from infected leaves of A. artemisiifolia. They were identified by spectroscopic and chemical methods as colletochlorin A, orcinol and tyrosol (1, 2 and 3). The absolute configuration 6’R to colletochlorin A was assigned for the first time applying the advanced Mosher’s method. When assayed by leaf-puncture on A. artemisiifolia only 1 caused the appearance of large necrosis. The same symptoms were also induced by 1 on ambrosia plantlets associated with plant wilting. On Lemna minor, colletochlorin A caused a clear fronds browning, with a total reduction in chlorophyll content. [ABSTRACT FROM AUTHOR]

Published
2018
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2. On the metabolites produced by Colletotrichum gloeosporioides a fungus proposed for the Ambrosia artemisiifolia biocontrol; spectroscopic data and absolute configuration assignment of colletochlorin A

Author

Pierluigi Reveglia, Antonio Evidente, Maurizio Vurro, Maria Chiara Zonno, Alexander Berestetskiy, Marco Masi, Angela Boari, Alessio Cimmino, Masi, Marco, Zonno, Maria Chiara, Cimmino, Alessio, Reveglia, Pierluigi, Berestetskiy, Alexander, Boari, Angela, Vurro, Maurizio, and Evidente, Antonio

Subjects
0106 biological sciences, Frond, Magnetic Resonance Spectroscopy, Weed Control, Biological pest control, Secondary Metabolism, Fungus, Plant Science, Orcinol, 01 natural sciences, Biochemistry, Analytical Chemistry, chemistry.chemical_compound, phytotoxins, Botany, orcinol and tyrosol, Colletotrichum, Ambrosia, colletochlorin A, biocontrol, Ambrosia artemisiifolia, Molecular Structure, biology, phytotoxin, Herbicides, 010405 organic chemistry, Colletotrichum gloeosporioide, Organic Chemistry, Wilting, Phenylethyl Alcohol, biology.organism_classification, Colletotrichum gloeosporioides, 0104 chemical sciences, Europe, Plant Leaves, Tyrosol, chemistry, colletochlorin A, orcinol and tyrosol, 010606 plant biology & botany
Abstract

Ambrosia artemisiifolia L. is responsible for serious allergies induced on humans. Different approaches for its control were proposed during the COST Action FA1203 “Sustainable management of Ambrosia artemisiifolia in Europe” (SMARTER). Fungal secondary metabolites often show potential herbicidal activity. Three phytotoxins were purified from the fungal culture filtrates of Colletotrichum gloeosporioides, isolated from infected leaves of A. artemisiifolia. They were identified by spectroscopic and chemical methods as colletochlorin A, orcinol and tyrosol (1, 2 and 3). The absolute configuration 6’R to colletochlorin A was assigned for the first time applying the advanced Mosher’s method. When assayed by leaf-puncture on A. artemisiifolia only 1 caused the appearance of large necrosis. The same symptoms were also induced by 1 on ambrosia plantlets associated with plant wilting. On Lemna minor, colletochlorin A caused a clear fronds browning, with a total reduction in chlorophyll content.

Published
2018
Full Text
View/download PDF

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