1
|
Wang H, Li X, Ren Y, Gao H, Feng Z, Dong L. Low expression of auxin receptor EcAFB4 confers resistance to florpyrauxifen-benzyl in Echinochloa crus-galli (L.) P. Beauv. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 204:106099. [PMID: 39277422 DOI: 10.1016/j.pestbp.2024.106099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2024] [Revised: 08/15/2024] [Accepted: 08/23/2024] [Indexed: 09/17/2024]
Abstract
Echinochloa crus-galli (L.) P. Beauv is a monocotyledonous weed that seriously infests rice fields. Florpyrauxifen-benzyl, a novel synthetic auxin herbicide commercialized in China in 2018, is an herbicide for controlling E. crus-galli. However, a suspected resistant population (R) collected in 2012 showed resistance to the previously unused florpyrauxifen-benzyl. Whole-plant dose-response bioassay indicated that the R population evolved high resistance to quinclorac and florpyrauxifen-benzyl. Pretreatment with P450 inhibitors did not influence the GR50 of E. crus-galli to florpyrauxifen-benzyl. The expression of target receptor EcAFB4 was down-regulated in the R population, leading to the reduced response to florpyrauxifen-benzyl (suppresses over-production of ethylene and ABA). We verified this resistance mechanism in the knockout OsAFB4 in Oryza sativa L. The Osafb4 mutants exhibited high resistance to florpyrauxifen-benzyl and moderate resistance to quinclorac. Furthermore, DNA methylation in the EcAFB4 promoter regulated its low expression in the R population after florpyrauxifen-benzyl treatment. In summary, the low expression of the auxin receptor EcAFB4 confers target resistance to the synthetic auxin herbicide florpyrauxifen-benzyl in the R- E. crus-galli.
Collapse
Affiliation(s)
- Hao Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, PR China; Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Xiaoxu Li
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
| | - Yanrong Ren
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Haitao Gao
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Zhike Feng
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Liyao Dong
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, PR China.
| |
Collapse
|
2
|
Riaz M, Akhtar N, Msimbira LA, Antar M, Ashraf S, Khan SN, Smith DL. Neocosmospora rubicola, a stem rot disease in potato: Characterization, distribution and management. Front Microbiol 2022; 13:953097. [PMID: 36033873 PMCID: PMC9403868 DOI: 10.3389/fmicb.2022.953097] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/21/2022] [Indexed: 11/23/2022] Open
Abstract
Potato (Solanum tuberosum L.) is one of the most important crops in maintaining global food security. Plant stand and yield are affected by production technology, climate, soil type, and biotic factors such as insects and diseases. Numerous fungal diseases including Neocosmospora rubicola, causing stem rot, are known to have negative effects on potato growth and yield quality. The pathogen is known to stunt growth and cause leaf yellowing with grayish-black stems. The infectivity of N. rubicola across a number of crops indicates the need to search for appropriate management approaches. Synthetic pesticides application is a major method to mitigate almost all potato diseases at this time. However, these pesticides significantly contribute to environmental damage and continuous use leads to pesticide resistance by pathogens. Consumers interest in organic products have influenced agronomists to shift toward the use of biologicals in controlling most pathogens, including N. rubicola. This review is an initial effort to carefully examine current and alternative approaches to control N. rubicola that are both environmentally safe and ecologically sound. Therefore, this review aims to draw attention to the N. rubicola distribution and symptomatology, and sustainable management strategies for potato stem rot disease. Applications of plant growth promoting bacteria (PGPB) as bioformulations with synthetic fertilizers have the potential to increase the tuber yield in both healthy and N. rubicola infested soils. Phosphorus and nitrogen applications along with the PGPB can improve plants uptake efficiency and reduce infestation of pathogen leading to increased yield. Therefore, to control N. rubicola infestation, with maximum tuber yield benefits, a pre-application of the biofertilizer is shown as a better option, based on the most recent studies. With the current limited information on the disease, precise screening of the available resistant potato cultivars, developing molecular markers for resistance genes against N. rubicola will assist to reduce spread and virulence of the pathogen.
Collapse
Affiliation(s)
- Muhammad Riaz
- Department of Plant Pathology, University of the Punjab, Lahore, Pakistan
- Department of Plant Science, McGill University, Montreal, QC, Canada
| | - Naureen Akhtar
- Department of Plant Pathology, University of the Punjab, Lahore, Pakistan
- Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, VIC, Australia
| | | | - Mohammed Antar
- Department of Plant Science, McGill University, Montreal, QC, Canada
| | - Shoaib Ashraf
- Department of Animal Science, McGill University, Montreal, QC, Canada
| | - Salik Nawaz Khan
- Department of Plant Pathology, University of the Punjab, Lahore, Pakistan
| | - Donald L. Smith
- Department of Plant Science, McGill University, Montreal, QC, Canada
| |
Collapse
|
3
|
Yang X, Han H, Cao J, Li Y, Yu Q, Powles SB. Exploring quinclorac resistance mechanisms in Echinochloa crus-pavonis from China. PEST MANAGEMENT SCIENCE 2021; 77:194-201. [PMID: 32652760 DOI: 10.1002/ps.6007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/16/2020] [Accepted: 07/11/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Barnyardgrass (Echinochloa spp.) is a global weed in rice fields. Quinclorac is commonly used to control barnyardgrass. However, due to persistent use, quinclorac resistance has evolved. We obtained quinclorac-susceptible (QS) and -resistant (QR1, QR2) lines from the progeny of a single resistant E. crus-pavonis for a resistance mechanism study. RESULTS Line QR1 exhibited resistance to high quinclorac rates (up to 6400 g ha-1 ), whereas line QR2 exhibited a resistance/susceptibility segregation ratio of 3:1 at the field or lower rates (400, 100 g ha-1 ). Intriguingly, a lower level of 14 C-quinclorac metabolism and hence a higher level of 14 C-quinclorac translocation was observed in QR1 than QS plants. The basal expression levels of 1-aminocyclopropane-1-carboxylic acid (ACC) synthase (ACS) and ACC oxidase 2 (ACO2) genes did not differ significantly between the QR1 and QS lines. However, more expression of ACS and ACO genes was induced by quinclorac treatment in QS than in QR1. Basal levels of β-cyanoalanine synthase (β-CAS) gene expression were similar in QS and QR1 plants, but a greater level of down-regulation was detected in QS than in QR1 plants after quinclorac treatment. CONCLUSION These results indicate QR plants are less responsive to quinclorac than QS plants in terms of up-regulating quinclorac metabolism and ethylene synthesis. Resistance in this E. crus-pavonis line is likely controlled by a single major gene, involving possibly an alteration in auxin signal perception/transduction to the ethylene biosynthesis pathway. The β-CAS is unlikely to play a major role in quinclorac resistance in this particular population.
Collapse
Affiliation(s)
- Xia Yang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Australian Herbicide Resistance Initiative, School of Agriculture and Environment, University of Western Australia, Crawley, Australia
| | - Heping Han
- Australian Herbicide Resistance Initiative, School of Agriculture and Environment, University of Western Australia, Crawley, Australia
| | - Jingjing Cao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Yongfeng Li
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- Agricultural Engineering Research Institute, Jiangsu University, Zhenjiang, China
| | - Qin Yu
- Australian Herbicide Resistance Initiative, School of Agriculture and Environment, University of Western Australia, Crawley, Australia
| | - Stephen B Powles
- Australian Herbicide Resistance Initiative, School of Agriculture and Environment, University of Western Australia, Crawley, Australia
| |
Collapse
|
4
|
Todd OE, Figueiredo MRA, Morran S, Soni N, Preston C, Kubeš MF, Napier R, Gaines TA. Synthetic auxin herbicides: finding the lock and key to weed resistance. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 300:110631. [PMID: 33180710 DOI: 10.1016/j.plantsci.2020.110631] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/17/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
Synthetic auxin herbicides are designed to mimic indole-3-acetic acid (IAA), an integral plant hormone affecting cell growth, development, and tropism. In this review, we explore target site genes in the auxin signaling pathway including SCFTIR1/AFB, Aux/IAA, and ARFs that are confirmed or proposed mechanisms for weed resistance to synthetic auxin herbicides. Resistance to auxin herbicides by metabolism, either by enhanced cytochrome P450 detoxification or by loss of pro-herbicide activation, is a major non-target-site resistance pathway. We speculate about potential fitness costs of resistance due to effects of resistance-conferring mutations, provide insight into the role of polyploidy in synthetic auxin resistance evolution, and address the genetic resources available for weeds. This knowledge will be the key to unlock the long-standing questions as to which components of the auxin signaling pathway are most likely to have a role in resistance evolution. We propose that an ambitious research effort into synthetic auxin herbicide/target site interactions is needed to 1) explain why some synthetic auxin chemical families have activity on certain dicot plant families but not others and 2) fully elucidate target-site cross-resistance patterns among synthetic auxin chemical families to guide best practices for resistance management.
Collapse
Affiliation(s)
- Olivia E Todd
- Department of Agricultural Biology, 1177 Campus Delivery, Colorado State University, Fort Collins, CO 80525, USA.
| | - Marcelo R A Figueiredo
- Department of Agricultural Biology, 1177 Campus Delivery, Colorado State University, Fort Collins, CO 80525, USA.
| | - Sarah Morran
- Department of Agricultural Biology, 1177 Campus Delivery, Colorado State University, Fort Collins, CO 80525, USA.
| | - Neeta Soni
- Department of Agricultural Biology, 1177 Campus Delivery, Colorado State University, Fort Collins, CO 80525, USA.
| | - Christopher Preston
- School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, SA, 5005, Australia.
| | - Martin F Kubeš
- School of Life Sciences, The University of Warwick, Coventry, CV4 7AL, UK.
| | - Richard Napier
- School of Life Sciences, The University of Warwick, Coventry, CV4 7AL, UK.
| | - Todd A Gaines
- Department of Agricultural Biology, 1177 Campus Delivery, Colorado State University, Fort Collins, CO 80525, USA.
| |
Collapse
|