Evidence map›Paper›PMID 39956931›Full record

ArticlePest management science2025

A point mutation in IAA34 confers resistance to the auxin herbicide 2,4-D in Sisymbrium orientale.

Yuanlin Qi, Mahima Krishnan, Matthew Tucker, Christopher Preston

Abstract read
In one paragraph

Article in Pest management science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

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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

1 citing paper in PubMed.

  1. Article
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

4 authors.

Yuanlin QiSchool of Agriculture, Food and Wine, The University of Adelaide, Glen Osmond, Australia.ORCID https://orcid.org/0000-0002-2260-1806
Mahima KrishnanSchool of Agriculture, Food and Wine, The University of Adelaide, Glen Osmond, Australia.ORCID https://orcid.org/0009-0009-4574-9131
Matthew TuckerSchool of Agriculture, Food and Wine, The University of Adelaide, Glen Osmond, Australia.
Christopher PrestonSchool of Agriculture, Food and Wine, The University of Adelaide, Glen Osmond, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSisymbrium orientale has evolved resistance to 2,4-D in Australia due to a 27 bp deletion in SoIAA2. However, one population of Sisymbrium orientale resistant to 2,4-D (R1) did not contain the SoIAA2

resultsR1 is resistant to 2,4-D, 2-methyl-4-chlorophenoxyacetic acid (MCPA), and fluroxypyr with increased tolerance to dicamba, triclopyr and picloram. The 2,4-D resistance level for R1 is lower than resistant populations containing a 27 bp deletion in IAA2. 2,4-D resistance in R1 was due to a single dominant gene. Pretreatment of R1 with the P450 inhibitor malathion did not reduce resistance to 2,4-D. We identified a point mutation, Leu 175 Pro, in SoIAA34 in R1, but not in three susceptible (S) populations. This mutation was present (either homozygous or heterozygous) in all 2,4-D resistant plants in a segregating F2 population generated from a cross between S and R1 plants. Transgenic Arabidopsis plants expressing SoIAA34-R had significantly greater root length and dry mass than the wild-type (WT) or transgenic Arabidopsis plants carrying SoIAA34-S under 2,4-D treatment.

conclusionWe confirmed resistance to 2,4-D in the R1 population was controlled by a single dominant locus. Further, we verified that the Leu 175 Pro mutation in SoIAA34 is responsible for the 2,4-D resistance in R1. © 2025 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Indexed as

2,4-Dichlorophenoxyacetic AcidHerbicide ResistanceHerbicidesPlant ProteinsPoint Mutation2,4-Dichlorophenoxyacetic AcidHerbicidesPlant ProteinsAux/IAAauxin herbicideresistance mechanismSisymbrium orientale

Identifiers

PMID39956931
PMCPMC12159386

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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.