Weed Science最新文献_第3页

Exploring sterile pollen technique as a novel tool for management of Palmer amaranth (Amaranthus palmeri) 探索将不育花粉技术作为管理帕尔默苋（Amaranthus palmeri）的新工具

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-27 DOI: 10.1017/wsc.2024.7

Wenzhuo Wu, M. Mesgaran

{"title":"Exploring sterile pollen technique as a novel tool for management of Palmer amaranth (Amaranthus palmeri)","authors":"Wenzhuo Wu, M. Mesgaran","doi":"10.1017/wsc.2024.7","DOIUrl":"https://doi.org/10.1017/wsc.2024.7","url":null,"abstract":"\u0000 The success of the insect sterile technique (IST) in managing insect pests raised the hypothesis that a similar approach could be employed to control weed populations. Here, we investigated the feasibility of employing irradiated sterile pollen as a means to disrupt seed production in dioecious weeds, specifically focusing on Palmer amaranth (Amaranthus palmeri S. Watson). Our goal was to determine the optimal irradiation dose that strikes a balance between inducing sterility and preserving competitiveness, as excessive doses could result in pollen mortality, while low doses may retain fertility. Plants were grown in a greenhouse during the summer of 2020 and spring of 2021. Once they reached the flowering stage, male and female individuals were isolated. Mature pollen samples were collected and exposed to varying dosages (0, 100, 200, 300, 400, and 500 Gy) of gamma rays. These irradiated and non-irradiated pollen samples were used in pollen viability assessments and hand-pollination experiments. In the hand-pollination study conducted in 2020, we employed six pollination treatments using different irradiation doses. The results showed that 300 Gy was the most effective dose, resulting in a maximum reduction of 30% in seed set compared with open pollination when irradiated pollen had prior access to the stigma through artificial pollination before open pollination. In 2021, to simulate real field conditions, three additional treatments were introduced into the study, further confirming the effectiveness of the optimal 300 Gy dose. Our findings indicate that the sterile pollen technique (SPT) using irradiated pollen can be a valuable approach for reducing weed seed production. SPT also holds potential for broad-spectrum weed control by mixing sterile pollen from multiple weed species in a single application. Additionally, it could aid in managing herbicide-resistant weeds that have survived in-season control efforts. This research contributes to the development of novel and sustainable weed management strategies.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140425718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Burial and subsequent growth of rigid ryegrass (Lolium rigidum) and ripgut brome (Bromus diandrus) following strategic deep tillage 战略深耕后硬质黑麦草（Lolium rigidum）和糙叶锦鸡儿草（Bromus diandrus）的埋藏和后续生长

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-20 DOI: 10.1017/wsc.2024.11

C. Borger, G. Mwenda, Sarah J Collins, Stephen L Davies, A. Peerzada, Andrew van Burgel

{"title":"Burial and subsequent growth of rigid ryegrass (Lolium rigidum) and ripgut brome (Bromus diandrus) following strategic deep tillage","authors":"C. Borger, G. Mwenda, Sarah J Collins, Stephen L Davies, A. Peerzada, Andrew van Burgel","doi":"10.1017/wsc.2024.11","DOIUrl":"https://doi.org/10.1017/wsc.2024.11","url":null,"abstract":"\u0000 Soil amelioration via strategic deep tillage is occasionally utilised within the conservation tillage systems to alleviate soil constraints, but its impact on weed seed burial and subsequent growth within the agronomic system is poorly understood. This study assessed the effects of different strategic deep tillage practices, including soil loosening (deep ripping), soil mixing (rotary spading), or soil inversion (mouldboard plough), on weed seed burial and subsequent weed growth, compared to a no-till control. The tillage practices were applied in 2019 at Yerecoin and Darkan, Western Australia, and data on weed seed burial and growth was collected during the following three-year winter crop rotation (2019–2021). Soil inversion buried 89% of rigid ryegrass (Lolium rigidum Gaudin) and ripgut brome (Bromus diandrus Roth) seeds to a depth of 10–20 cm at both sites, while soil loosening and mixing left between 31% and 91% of the seeds in the top 0–10 cm of soil, with broad variation between sites. Few seeds were buried beyond 20 cm despite tillage working depths exceeding 30 cm at both sites. Soil inversion reduced the density of L. rigidum to <1 plant m-2 for three years after strategic tillage. Bromus diandrus density was initially reduced to 0-1 plant m-2 by soil inversion but increased to 4 plants m-2 at Yerecoin in 2020 and 147 plants at Darkan in 2021. Soil loosening or mixing did not consistently decrease weed density. The field data was used to parameterize a model, which predicted weed density following strategic tillage with greater accuracy for soil inversion than for loosening or mixing. The findings provide important insights into the effects of strategic deep tillage on weed management in conservational agricultural systems and demonstrate the potential of models for optimising weed management strategies.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140446195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Germination responses of the invasive cactus, hedge cactus (Cereus uruguayanus) to environmental factors 外来入侵仙人掌--对冲仙人掌（Cereus uruguayanus）的发芽对环境因素的反应

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-20 DOI: 10.1017/wsc.2024.10

F. D. Panetta, Shane Campbell, Simon Brooks, D. Brazier, B. S. Chauhan

{"title":"Germination responses of the invasive cactus, hedge cactus (Cereus uruguayanus) to environmental factors","authors":"F. D. Panetta, Shane Campbell, Simon Brooks, D. Brazier, B. S. Chauhan","doi":"10.1017/wsc.2024.10","DOIUrl":"https://doi.org/10.1017/wsc.2024.10","url":null,"abstract":"\u0000 Hedge cactus (Cereus uruguayanus R. Kiesling; syn. Cereus hildmannianus K. Schum.) is a columnar cactus that was introduced to Australia as an ornamental plant and has since become invasive in subhumid regions of Queensland and New South Wales. Compared to its congener Cereus jamacaru DC. (which currently is invasive in both eastern and southern Africa), information on seed biology of C. uruguayanus is lacking. Experiments were conducted to study the effects of alternating day/night temperature, salt stress, water stress, and burial depth on germination and seedling emergence of four seed accessions of C. uruguayanus. Seeds were also subjected to a Controlled Aging Test (CAT) to obtain an estimate of potential persistence under field conditions. The optimum temperature regime for germination of all accessions was 30/20 C. Germination decreased with an increase in sodium chloride (NaCl) concentrations, but germination of all accessions (range 26–81%) occurred at 160 mM NaCl, indicating very high salt tolerance. Seed germination gradually decreased with an increase in water stress, but germination in all accessions (range 19–47%) occurred at -0.8 MPa. Seed viability and potential germinability were unaffected by exposure to salt level (320 mM NaCl) and water (-1.6 MPa) stress under which germination did not occur. Germination responses to all three factors were generally similar to those documented for C. jamacaru. The emergence of C. uruguayanus decreased with an increase in seed burial depth. The highest emergence (43%) was recorded for surface-sown seeds and emergence was reduced to 0 at a burial depth of 2 cm. CAT results for two seed accessions indicated that seeds of C. uruguayanus are likely to demonstrate extended (> 3 yr) persistence under field conditions, a prediction that is supported by evidence that germination of its small (2 mm) seeds is markedly reduced by burial.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140446276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atmospheric deposition of dicamba herbicide can cause injury to sensitive soybean 麦草畏除草剂在大气中的沉积会对敏感的大豆造成伤害

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-20 DOI: 10.1017/wsc.2024.9

Eric Oseland, Mandy D. Bish, Robert Lerch, Kevin Bradley

{"title":"Atmospheric deposition of dicamba herbicide can cause injury to sensitive soybean","authors":"Eric Oseland, Mandy D. Bish, Robert Lerch, Kevin Bradley","doi":"10.1017/wsc.2024.9","DOIUrl":"https://doi.org/10.1017/wsc.2024.9","url":null,"abstract":"\u0000 The herbicide dicamba has injured millions of hectares of sensitive plant species in the United States since 2017. This injury has coincided with the commercialization of dicamba-resistant soybean [Glycine max (L.) Merr.] and cotton (Gossypium hirsutum L.). We quantified atmospheric deposition and mass flux of dicamba in 12 soybean production regions of Missouri. Dicamba was routinely detected in weekly deposition samples collected during agriculturally-intensive spray periods. Observed concentrations were indicative of both local (<1 km) and long-distance transport (>1 km) of air-borne dicamba. High deposition events (>100 µg m-2) occurred annually in southeast Missouri, and peak dicamba deposited at these sites (12.5-84.0 µg m-2) was sufficient to injure non-dicamba resistant soybean. Adoption rate of dicamba-resistant crops and atmospheric stability explained much of the variance, and it is difficult for a herbicide product label to address these variables. Overall, these results demonstrated that dicamba was commonly deposited from the atmosphere during the growing season and observed concentrations and fluxes were strongly related to the timing and magnitude of rainfall events, and the amount of dicamba usage near collection sites.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140448087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Herbicide Resistance Management: A Common Pool Resource Problem? 除草剂抗药性管理：共同资源问题？

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-20 DOI: 10.1017/wsc.2024.12

Nicolas T. Bergmann, Ian C. Burke, C. Wardropper

{"title":"Herbicide Resistance Management: A Common Pool Resource Problem?","authors":"Nicolas T. Bergmann, Ian C. Burke, C. Wardropper","doi":"10.1017/wsc.2024.12","DOIUrl":"https://doi.org/10.1017/wsc.2024.12","url":null,"abstract":"\u0000 Herbicide resistance is often viewed as a complex problem in need of innovative management solutions. Because of the transboundary mobility of many weeds, resistance to herbicides is also viewed as a community-scale issue. Consequently, the idea of greater coordination among resource users – especially growers – is often promoted as a management approach. Recently, scholars have framed herbicide resistance as a commons problem in need of collective action. Specifically, social scientists have explored the utility of adopting bottom-up community-based approaches to help solve the growing problem of herbicide resistance through a framework for interpreting the commons known as common pool resource theory. This article analyzes how herbicide resistance fits – and fails to fit – within common pool resource theory and offers an updated conceptual framework from which to build future work. We argue that the application of common pool resource theory to herbicide resistance management is underdeveloped and approaches based on this theory have shown little success. The relevance of common pool resource theory for informing herbicide resistance management is less settled than existing scholarship has suggested and other frameworks for approaching transboundary resource problems – such as co-production of knowledge and participatory action research – warrant consideration.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140447323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Responses of Soil Seedbank and Aboveground Weed Communities to Globe Artichoke Cropping Systems: an On-Farm Analysis 土壤种子库和地上杂草群落对朝鲜蓟种植系统的响应：农场分析

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-12 DOI: 10.1017/wsc.2024.5

A. Scavo, A. Restuccia, Alessandro Di Martino, G. Mauromicale

{"title":"Responses of Soil Seedbank and Aboveground Weed Communities to Globe Artichoke Cropping Systems: an On-Farm Analysis","authors":"A. Scavo, A. Restuccia, Alessandro Di Martino, G. Mauromicale","doi":"10.1017/wsc.2024.5","DOIUrl":"https://doi.org/10.1017/wsc.2024.5","url":null,"abstract":"\u0000 Globe artichoke [Cynara cardunculus L. var. scolymus (L.) Fiori] is one of the most important crops across the Mediterranean basin, where weeds are an important biotic constraint limiting crop yields. However, the effects of globe artichoke cropping systems on weeds have been rarely tested. Following the demand for eco-friendly weed management practices, a multi-location trial (13 farms) was carried out, measuring weed seedbanks and aboveground communities within 4 globe artichoke cropping systems: globe artichoke monoculture (ART), the 8-10 years previously cultivation of globe artichoke (past-ART), a globe artichoke – durum wheat (Triticum aestivum L.) rotation (ART-WHEAT) and a control where globe artichoke was never grown. Both below-and aboveground weed communities were dominated by annual therophytes, but a low correspondence was found between both types of communities. Averaged over farms, ART highly reduced both the weed soil seedbank (1600 seeds m‒2 on average) and the aboveground weed biomass (only 3.4 g DW m‒2) compared to the control, with a decrease of 72% in the soil seedbank and 99% in the aboveground flora, respectively. Moreover, in the farms where globe artichoke was previously grown, a very low aboveground weed biomass (77% less than control) was found. In addition, ART contributed to the preservation of high levels of weed diversity (except for aboveground communities) and therefore avoided the creation of a specialized weed flora. In conclusion, we suggest the inclusion of globe artichoke into crop rotation schemes in Mediterranean agroecosystems as a sustainable tool for reducing both the soil seedbank and aboveground weeds, thus reducing the requirement of direct weed control methods and preserving the environment.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139844294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling The Effect of Temperature on Rhizome sprouting in the Invasive Weed Silverleaf Nightshade (Solanum elaeagnifolium) 模拟温度对入侵杂草银叶夜来香（Solanum elaeagnifolium）根茎萌发的影响

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-12 DOI: 10.1017/wsc.2024.8

Omer Kapiluto, Evgeny Smirnov, Gai Achdary, H. Eizenberg, R. Lati

{"title":"Modelling The Effect of Temperature on Rhizome sprouting in the Invasive Weed Silverleaf Nightshade (Solanum elaeagnifolium)","authors":"Omer Kapiluto, Evgeny Smirnov, Gai Achdary, H. Eizenberg, R. Lati","doi":"10.1017/wsc.2024.8","DOIUrl":"https://doi.org/10.1017/wsc.2024.8","url":null,"abstract":"\u0000 Silverleaf nightshade (Solanum elaeagnifolium Cav.), a noxious, highly invasive perennial weed, poses a significant threat to irrigated summer crops, vegetables, and orchards. This weed has the ability to reproduce both sexually, through seed production, and asexually, via an extensive underground rhizome network, the latter being major role in the weed’s invasion, establishment, and persistence. Our aims were thus to assess the impact of temperature on rhizome sprouting for fragments of different lengths and to model the sprouting dynamics. The influence of temperature on the sprouting of rhizome fragments (2.5, 5, 7.5, or 10 cm long) was investigated in growth chambers at eight temperatures ranging from 10–45 C. The highest sprouting proportions for 10-cm rhizome fragments were recorded at 30 and 35 C in complete darkness. The highest sprouting time for all fragment lengths was observed at 15 C in complete darkness. Modeling sprouting rates as a function of temperature gave the cardinal temperatures for the four different rhizome fragment lengths, with values of: T\u0000 b\u0000 (base temperature) 12.80, 9.34, 9.14 and 9.50 C, T\u0000 o\u0000 (optimal temperature) 38.90, 36.60, 35.16 and 34.86 C, Tc (ceiling temperature) 39.80, 40.08, 40.50 and 40.80 C for the rhizome length of 2.5, 5, 7.5 and 10 cm respectively. Based on these findings, the potential for S. elaeagnifolium to spread to new areas and possible new management strategies are discussed; these offer a novel approach for informed decision making regarding the control of this weed.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139782935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modelling The Effect of Temperature on Rhizome sprouting in the Invasive Weed Silverleaf Nightshade (Solanum elaeagnifolium) 模拟温度对入侵杂草银叶夜来香（Solanum elaeagnifolium）根茎萌发的影响

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-12 DOI: 10.1017/wsc.2024.8

Omer Kapiluto, Evgeny Smirnov, Gai Achdary, H. Eizenberg, R. Lati

{"title":"Modelling The Effect of Temperature on Rhizome sprouting in the Invasive Weed Silverleaf Nightshade (Solanum elaeagnifolium)","authors":"Omer Kapiluto, Evgeny Smirnov, Gai Achdary, H. Eizenberg, R. Lati","doi":"10.1017/wsc.2024.8","DOIUrl":"https://doi.org/10.1017/wsc.2024.8","url":null,"abstract":"\u0000 Silverleaf nightshade (Solanum elaeagnifolium Cav.), a noxious, highly invasive perennial weed, poses a significant threat to irrigated summer crops, vegetables, and orchards. This weed has the ability to reproduce both sexually, through seed production, and asexually, via an extensive underground rhizome network, the latter being major role in the weed’s invasion, establishment, and persistence. Our aims were thus to assess the impact of temperature on rhizome sprouting for fragments of different lengths and to model the sprouting dynamics. The influence of temperature on the sprouting of rhizome fragments (2.5, 5, 7.5, or 10 cm long) was investigated in growth chambers at eight temperatures ranging from 10–45 C. The highest sprouting proportions for 10-cm rhizome fragments were recorded at 30 and 35 C in complete darkness. The highest sprouting time for all fragment lengths was observed at 15 C in complete darkness. Modeling sprouting rates as a function of temperature gave the cardinal temperatures for the four different rhizome fragment lengths, with values of: T\u0000 b\u0000 (base temperature) 12.80, 9.34, 9.14 and 9.50 C, T\u0000 o\u0000 (optimal temperature) 38.90, 36.60, 35.16 and 34.86 C, Tc (ceiling temperature) 39.80, 40.08, 40.50 and 40.80 C for the rhizome length of 2.5, 5, 7.5 and 10 cm respectively. Based on these findings, the potential for S. elaeagnifolium to spread to new areas and possible new management strategies are discussed; these offer a novel approach for informed decision making regarding the control of this weed.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139842971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Confirmation and Differential Metabolism Associated with Quinclorac Resistance in Smooth Crabgrass (Digitaria ischaemum) 确认平滑蟹草（Digitaria ischaemum）对喹啉酸的抗性及其代谢差异

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-12 DOI: 10.1017/wsc.2024.6

Atikah D. Putri, Varsha Singh, E. D. De Castro, C. A. Rutland, J. Scott McElroy, Te-ming Tseng, J. McCurdy

{"title":"Confirmation and Differential Metabolism Associated with Quinclorac Resistance in Smooth Crabgrass (Digitaria ischaemum)","authors":"Atikah D. Putri, Varsha Singh, E. D. De Castro, C. A. Rutland, J. Scott McElroy, Te-ming Tseng, J. McCurdy","doi":"10.1017/wsc.2024.6","DOIUrl":"https://doi.org/10.1017/wsc.2024.6","url":null,"abstract":"\u0000 Quinclorac controls crabgrass (Digitaria spp.) in cool- and warm-season turfgrass species. Herbicide-resistant smooth crabgrass [Digitaria ischaemum (Schreb.) Schreb. Ex Muhl.]D. ischaemum biotypes have evolved due to recurrent usage of quinclorac. Two Mississippi populations (MSU1 and MSU2) of D. ischaemum were characterized using standard greenhouse dose-response screens in order to assess their resistance relative to known susceptible populations. Subsequent investigations explored mechanisms of resistance, including examining cyanide accumulation, glutathione-S-transferase (GST) activity, and the potential involvement of cytochrome P450s in MSU1, MSU2, and a susceptible (SMT2). Resistant populations MSU1 and MSU2 required 80 and five times more quinclorac, respectively, to reach 50% biomass reduction than susceptible populations. The SMT2 biotype accumulated three times more cyanide than the resistant MSU1 and MSU2 populations. GST activity was elevated in resistant MSU1 and MSU2 populations. Furthermore, quinclorac concentrations of treated resistant populations was elevated when plants were pre-treated with the P450 inhibitor malathion. These findings suggest a non-target-site–based mechanism of resistance involving the accumulation of cyanide. This may provide a scientific basis for understanding the occurrence of quinclorac-resistant D. ischaemum, although further research is needed to investigate potential target-site mechanisms of resistance.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139784969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Confirmation and Differential Metabolism Associated with Quinclorac Resistance in Smooth Crabgrass (Digitaria ischaemum) 确认平滑蟹草（Digitaria ischaemum）对喹啉酸的抗性及其代谢差异

IF 2.5 2区农林科学

Weed Science Pub Date : 2024-02-12 DOI: 10.1017/wsc.2024.6

Atikah D. Putri, Varsha Singh, E. D. De Castro, C. A. Rutland, J. Scott McElroy, Te-ming Tseng, J. McCurdy

{"title":"Confirmation and Differential Metabolism Associated with Quinclorac Resistance in Smooth Crabgrass (Digitaria ischaemum)","authors":"Atikah D. Putri, Varsha Singh, E. D. De Castro, C. A. Rutland, J. Scott McElroy, Te-ming Tseng, J. McCurdy","doi":"10.1017/wsc.2024.6","DOIUrl":"https://doi.org/10.1017/wsc.2024.6","url":null,"abstract":"\u0000 Quinclorac controls crabgrass (Digitaria spp.) in cool- and warm-season turfgrass species. Herbicide-resistant smooth crabgrass [Digitaria ischaemum (Schreb.) Schreb. Ex Muhl.]D. ischaemum biotypes have evolved due to recurrent usage of quinclorac. Two Mississippi populations (MSU1 and MSU2) of D. ischaemum were characterized using standard greenhouse dose-response screens in order to assess their resistance relative to known susceptible populations. Subsequent investigations explored mechanisms of resistance, including examining cyanide accumulation, glutathione-S-transferase (GST) activity, and the potential involvement of cytochrome P450s in MSU1, MSU2, and a susceptible (SMT2). Resistant populations MSU1 and MSU2 required 80 and five times more quinclorac, respectively, to reach 50% biomass reduction than susceptible populations. The SMT2 biotype accumulated three times more cyanide than the resistant MSU1 and MSU2 populations. GST activity was elevated in resistant MSU1 and MSU2 populations. Furthermore, quinclorac concentrations of treated resistant populations was elevated when plants were pre-treated with the P450 inhibitor malathion. These findings suggest a non-target-site–based mechanism of resistance involving the accumulation of cyanide. This may provide a scientific basis for understanding the occurrence of quinclorac-resistant D. ischaemum, although further research is needed to investigate potential target-site mechanisms of resistance.","PeriodicalId":23688,"journal":{"name":"Weed Science","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139844513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0