The Library
Different regulation of auxin homeostasis would be a possible mechanism conferring quinclorac resistance in Echinochloa crusgalli var. zelayensis
Tools
Zhao, Zerui, Liu, Xudong, Pan, Xukun, Napier, Richard, Dong, Liyao and Liu, Jun (2022) Different regulation of auxin homeostasis would be a possible mechanism conferring quinclorac resistance in Echinochloa crusgalli var. zelayensis. Weed Research, 62 (5). pp. 318-327. doi:10.1111/wre.12546 ISSN 0043-1737.
|
PDF
WRAP-Different-regulation-of-auxin-homeostasis-would-be-a-possible-mechanism-conferring-quinclorac-resistance-Napier-22.pdf - Accepted Version - Requires a PDF viewer. Download (1744Kb) | Preview |
Official URL: https://doi.org/10.1111/wre.12546
Abstract
Differences in ethylene biosynthesis, and cyanide detoxification have been reported to be mechanisms of quinclorac resistance in Echinochloa crusgalli var. zelayensis. Resistant phenotypes could be a consequence of the altered endogenous IAA homeostasis induced by the herbicide. In this study we determined the IAA content and expression levels of auxin homeostasis-related genes in susceptible and resistant biotypes of E. crusgalli var. zelayensis after quinclorac treatment. The results showed that the IAA content of JNNX-S (susceptible biotype) was significantly higher than that of SSXB-R (resistant biotype) after treatment with 50 μM quinclorac. To better understand this rise in IAA, the expression profiles of seven genes (one for auxin synthesis, five for IAA conjugation, and one for IAA oxidation) and the biochemical activities of two oxidases involved in IAA homeostasis were measured. The expression of EcYUCCA10 was significantly higher in JNNX-S than in SSXB-R. The expression levels of the EcGH3s were significantly lower in JNNX-S than in SSXB-R. These expression profiles were consistent with the elevation of IAA levels in the susceptible biotype. In contrast, EcUGT and EcDAO were induced in each biotype, but a smaller increase was observed in SSXB-R than in JNNX-S. The enzymatic activities of IAA oxidases and peroxidases were higher in SSXB-R than in JNNX-S 24 h after treatment. It was inferred that altered expression of specific genes involved in IAA synthesis, conjugation, and oxidation resulted in less IAA being induced in the resistant biotype, resulting in a lower ethylene burst and the associated quinclorac resistance. These results suggest novel layers of complexity in the mechanism of quinclorac resistance.
Item Type: | Journal Article | ||||||||
---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QK Botany Q Science > QP Physiology S Agriculture > SB Plant culture |
||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||
Library of Congress Subject Headings (LCSH): | Auxin -- Molecular aspects, Homeostasis , Quinclorac , Echinochloa crusgalli -- Control, Plants -- Effect of herbicides on, Weeds -- Control | ||||||||
Journal or Publication Title: | Weed Research | ||||||||
Publisher: | Wiley-Blackwell Publishing Ltd. | ||||||||
ISSN: | 0043-1737 | ||||||||
Official Date: | October 2022 | ||||||||
Dates: |
|
||||||||
Volume: | 62 | ||||||||
Number: | 5 | ||||||||
Page Range: | pp. 318-327 | ||||||||
DOI: | 10.1111/wre.12546 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Reuse Statement (publisher, data, author rights): | This is the peer reviewed version of the following article:Zhao, Z., Liu, X., Pan, X., Napier, R., Dong, L. & Li, J. (2022) Different regulation of auxin homeostasis would be a possible mechanism conferring quinclorac resistance in Echinochloa crusgalli var. zelayensis. Weed Research, 62( 5), 318– 327. Available from: https://doi.org/10.1111/wre.12546, which has been published in final form at https://doi.org/10.1111/wre.12546. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 11 July 2022 | ||||||||
Date of first compliant Open Access: | 2 August 2023 | ||||||||
RIOXX Funder/Project Grant: |
|
||||||||
Related URLs: |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year