In:
PLOS Biology, Public Library of Science (PLoS), Vol. 19, No. 1 ( 2021-1-19), p. e3001022-
Abstract:
Plants and insects often use the same compounds for chemical communication, but not much is known about the genetics of convergent evolution of chemical signals. The terpene ( E )-β-ocimene is a common component of floral scent and is also used by the butterfly Heliconius melpomene as an anti-aphrodisiac pheromone. While the biosynthesis of terpenes has been described in plants and microorganisms, few terpene synthases (TPSs) have been identified in insects. Here, we study the recent divergence of 2 species, H . melpomene and Heliconius cydno , which differ in the presence of ( E )-β-ocimene; combining linkage mapping, gene expression, and functional analyses, we identify 2 novel TPSs. Furthermore, we demonstrate that one, HmelOS, is able to synthesise ( E )-β-ocimene in vitro. We find no evidence for TPS activity in HcydOS (HmelOS ortholog of H . cydno ), suggesting that the loss of ( E )-β-ocimene in this species is the result of coding, not regulatory, differences. The TPS enzymes we discovered are unrelated to previously described plant and insect TPSs, demonstrating that chemical convergence has independent evolutionary origins.
Type of Medium:
Online Resource
ISSN:
1545-7885
DOI:
10.1371/journal.pbio.3001022
DOI:
10.1371/journal.pbio.3001022.g001
DOI:
10.1371/journal.pbio.3001022.g002
DOI:
10.1371/journal.pbio.3001022.g003
DOI:
10.1371/journal.pbio.3001022.g004
DOI:
10.1371/journal.pbio.3001022.s001
DOI:
10.1371/journal.pbio.3001022.s002
DOI:
10.1371/journal.pbio.3001022.s003
DOI:
10.1371/journal.pbio.3001022.s004
DOI:
10.1371/journal.pbio.3001022.s005
DOI:
10.1371/journal.pbio.3001022.s006
DOI:
10.1371/journal.pbio.3001022.s007
DOI:
10.1371/journal.pbio.3001022.s008
DOI:
10.1371/journal.pbio.3001022.s009
DOI:
10.1371/journal.pbio.3001022.s010
DOI:
10.1371/journal.pbio.3001022.s011
DOI:
10.1371/journal.pbio.3001022.s012
DOI:
10.1371/journal.pbio.3001022.s013
DOI:
10.1371/journal.pbio.3001022.s014
DOI:
10.1371/journal.pbio.3001022.s015
DOI:
10.1371/journal.pbio.3001022.s016
DOI:
10.1371/journal.pbio.3001022.s017
DOI:
10.1371/journal.pbio.3001022.s018
DOI:
10.1371/journal.pbio.3001022.s019
DOI:
10.1371/journal.pbio.3001022.s020
DOI:
10.1371/journal.pbio.3001022.s021
DOI:
10.1371/journal.pbio.3001022.s022
DOI:
10.1371/journal.pbio.3001022.s023
DOI:
10.1371/journal.pbio.3001022.s024
DOI:
10.1371/journal.pbio.3001022.s025
DOI:
10.1371/journal.pbio.3001022.s026
DOI:
10.1371/journal.pbio.3001022.s027
DOI:
10.1371/journal.pbio.3001022.s028
DOI:
10.1371/journal.pbio.3001022.s029
DOI:
10.1371/journal.pbio.3001022.s030
DOI:
10.1371/journal.pbio.3001022.s031
DOI:
10.1371/journal.pbio.3001022.s032
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2021
detail.hit.zdb_id:
2126773-X
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