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Insecticidal Constituents from the Argentine Liverwort Plagiochila bursata
Author(s) -
Ramírez Marta,
Kamiya Norma,
Popich Susana,
Asakawa Yoshinori,
Bardón Alicia
Publication year - 2010
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.200900256
Subject(s) - noctuidae , lepidoptera genitalia , spodoptera , instar , larva , pupa , chemistry , botany , biology , stereochemistry , biochemistry , gene , recombinant dna
The new 2,3‐secoaromadendrane 1 , together with the known compounds plagiochilines A and M ( 2 and 3 , resp.), fusicogigantone A ( 4 ), and 1,4‐dimethylazulene ( 5 ) were isolated from an Argentine collection of the liverwort Plagiochila bursata. Structures were elucidated by extensive 1D‐ and 2D‐NMR studies. Compounds 2 and 4 , incorporated to the larval diet at 100 μg per g of diet, reduced the larval growth of Spodoptera frugiperda (Lepidoptera: Noctuidae) by 66±29% and 25±8% and produced 55 and 75% larval mortality at early instars and 20 and 25% pupal mortality, respectively. Treatment with compound 2 also produced abdomen and wing malformation in adults leading to impossibility to mate.