Evidence map›Paper›PMID 25224158›Full record

ArticleBMC plant biology2014

Positive Darwinian selection is a driving force for the diversification of terpenoid biosynthesis in the genus Oryza.

Hao Chen, Guanglin Li, Tobias G Köllner, Qidong Jia, Jonathan Gershenzon, Feng Chen

Open access · goldAbstract read
In one paragraph

Article in BMC plant biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
0.7field-weighted citation impact, top 29% of its field
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 39 citations in OpenAlex.

  1. Review
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  7. Evolution and co-evolution: insights into the divergence of plant heat shock factor genes.Physiology and molecular biology of plants : an international journal of functional plant biology · 2022
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  9. Evolution of Terpene Synthases in Orchidaceae.International journal of molecular sciences · 2021
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  10. Protective Effects of (Nutrients · 2020
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  11. Article
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  14. The evolution of metabolism: How to test evolutionary hypotheses at the genomic level.Computational and structural biotechnology journal · 2020
    Review
  15. Article
  16. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 3 countries.

Hao Chen
Guanglin Li
Tobias G Köllner
Qidong Jia
Jonathan Gershenzon
Feng ChenDepartment of Plant Sciences, University of Tennessee, Knoxville 37996, TN, USA. fengc@utk.edu.
Max Planck Institute for Chemical Ecology · DEUniversity of Tennessee at Knoxville · USBeijing Botanical Garden · CNShaanxi Normal University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTerpenoids constitute the largest class of secondary metabolites made by plants and display vast chemical diversity among and within species. Terpene synthases (TPSs) are the pivotal enzymes for terpenoid biosynthesis that create the basic carbon skeletons of this class. Functional divergence of paralogous and orthologous TPS genes is a major mechanism for the diversification of terpenoid biosynthesis. However, little is known about the evolutionary forces that have shaped the evolution of plant TPS genes leading to terpenoid diversity.

resultsThe orthologs of Oryza Terpene Synthase 1 (OryzaTPS1), a rice terpene synthase gene involved in indirect defense against insects in Oryza sativa, were cloned from six additional Oryza species. In vitro biochemical analysis showed that the enzymes encoded by these OryzaTPS1 genes functioned either as (E)-β-caryophyllene synthases (ECS), or (E)-β-caryophyllene & germacrene A synthases (EGS), or germacrene D & germacrene A synthases (DAS). Because the orthologs of OryzaTPS1 in maize and sorghum function as ECS, the ECS activity was inferred to be ancestral. Molecular evolutionary detected the signature of positive Darwinian selection in five codon substitutions in the evolution from ECS to DAS. Homology-based structure modeling and the biochemical analysis of laboratory-generated protein variants validated the contribution of the five positively selected sites to functional divergence of OryzaTPS1. The changes in the in vitro product spectra of OryzaTPS1 proteins also correlated closely to the changes in in vivo blends of volatile terpenes released from insect-damaged rice plants.

conclusionsIn this study, we found that positive Darwinian selection is a driving force for the functional divergence of OryzaTPS1. This finding suggests that the diverged sesquiterpene blend produced by the Oryza species containing DAS may be adaptive, likely in the attraction of the natural enemies of insect herbivores.

Indexed as

Alkyl and Aryl TransferasesOryzaSelection, GeneticTerpenesAlkyl and Aryl TransferasesTerpenesterpene synthase

Identifiers

PMID25224158
PMCPMC4172859
OpenAlexW2105237540

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.