Evolution of olfactory receptor in oriental fruit fly Dacus dorsalis.

Abstract:

:Male oriental fruit flies (Dacus dorsalis) from colonies in Taiwan and Hawaii were evaluated for limit of response to various analogues of methyl eugenol. The results are interpreted in terms of the geometry and allosteric requirements of the antennal receptor that triggers the characteristic methyl eugenol reflex. This receptor has evolved for complementarity to all portions of the methyl eugenol molecule and responds only to ortho-substituted benzenes with adjacent oxygen atoms or isoelectronic equivalents. Substantial differences in responses of Taiwan and Hawaiian D. dorsalis suggest that perceptible evolution of the receptor protein has occurred during the past 50 years. A plausible scheme for the coevolution of dacini flies with plants containing phenylpropionoid essential oils is outlined.

authors

Metcalf RL,Metcalf ER,Mitchell WC,Lee LW

doi

10.1073/pnas.76.4.1561

subject

Has Abstract

pub_date

1979-04-01 00:00:00

pages

1561-5

issue

4

eissn

0027-8424

issn

1091-6490

journal_volume

76

pub_type

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