Induced alkaloid defence inAtropa acuminata in response to mechanical and herbivore leaf damage |
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Authors: | M. Bashir Khan Jeffrey B. Harborne |
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Affiliation: | (1) School of Plant Sciences, University of Reading, PO Box 221, RG6 2AS Reading, United Kingdom |
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Abstract: | Summary Measurement of tropane alkaloid content in leaves ofAtropa acuminata after mechanical damage showed a maximum increase to 153% of the control 8 days later. There were no changes in the root or stem after similar damage. The plant responded to repeated mechanical damage by doubling its alkaloid content at 11 days after the initial wounding. But on further treatments, there was a slight decrease in alkaloid content with time. Mollusc feeding produced an increase of 164% in alkaloid content after 4 days. These results indicate that induced defence systems in angiosperms can vary considerably from plant species to plant species and that the effects of mechanical damage may differ in different parts of the same plant. |
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Keywords: | induced defence herbivory leaf damage mollusc feeding tropane alkaloids Solanaceae Atropa acuminata |
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