The dicotyledonous species Erodium moschatum (L) L'Her. ex Aiton is sensitive to haloxyfop herbicide due to herbicide-sensitive acetyl-coenzyme A carboxylase

Christopher, John T. and Holtum, Joseph A. M. (1998) The dicotyledonous species Erodium moschatum (L) L'Her. ex Aiton is sensitive to haloxyfop herbicide due to herbicide-sensitive acetyl-coenzyme A carboxylase. Planta, 207 2: 275-279. doi:10.1007/s004250050483


Author Christopher, John T.
Holtum, Joseph A. M.
Title The dicotyledonous species Erodium moschatum (L) L'Her. ex Aiton is sensitive to haloxyfop herbicide due to herbicide-sensitive acetyl-coenzyme A carboxylase
Journal name Planta   Check publisher's open access policy
ISSN 0032-0935
1432-2048
Publication date 1998-12
Sub-type Article (original research)
DOI 10.1007/s004250050483
Volume 207
Issue 2
Start page 275
End page 279
Total pages 5
Place of publication Heidelberg, Germany
Publisher Springer
Language eng
Formatted abstract
Most plants are resistant to herbicides which inhibit acetyl-coenzyme A carboxylase (ACCase) because they have both eukaryotic ACCase and herbicide-insensitive, prokaryotic ACCase. Members of the Gramineae are killed because they have only herbicide-sensitive, eukaryotic ACCase. Here we report that a dicot, Erodium moschatum, is sensitive to the ACCase-inhibiting herbicide haloxyfop because it has herbicide-sensitive ACCase. Erodium moschatum was controlled by haloxyfop application at rates which controlled the gramineous species Digitaria ciliaris and a susceptible Lolium rigidum biotype but did not control the dicot Nicotiana tabacum or a haloxyfop-resistant L. rigidum biotype WLR96. Similarly, the haloxyfop acid concentration required to inhibit activity by 50% in E. moschatum ACCase assays (1.0 μM) was similar to that required for D. ciliaris (2.3 μM) and susceptible L. rigidum (0.4 μM) but much less than that for the resistant L. rigidum biotype WLR96 (353 μM) or the dicots N. tabacum (182 μM) and Pisum sativum (150 μM). Leaf protein extracts from N. tabacum and P. sativum contained both eukaryotic ACCase and prokaryotic subunits of ACCase, but E. moschatum, D. ciliaris and both L. rigidum biotypes exhibited only the eukaryotic ACCase. Thus, the dicot E. moschatum is sensitive to haloxyfop because it lacks the herbicide-insensitive prokaryotic ACCase, a protein that has been considered ubiquitous in dicot species.
Keyword Acetyl-coenzyme A carboxylase
Aryloxyphenoxypropionate
Erodium
Haloxyfop
Graminicide
Weed Control
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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Created: Mon, 07 Mar 2011, 14:50:44 EST