Occurrence of Resistance to ALS Inhibitors in European Cyperus esculentus L.: Characterisation and Implications for Management

Scarabel, Laura; Farinati, Silvia; Sattin, M.

doi:10.3390/agronomy10081133

Cited by 6 publications

(4 citation statements)

References 28 publications

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“…However, several weed species have adapted to these conditions, exerting a considerable pressure on the rice crops. The most competitive and difficult to control rice weed species in Spain (Table 4) are Echinochloa spp., along with some Cyperaceae, present in most European rice-growing regions [16][17][18][19]. In other parts of the world, for example in Arkansas and California in the USA [20,21], and in Asian countries such as Japan [22] and China [23], the most harmful rice weeds are similar to those occurring at in Europe: Echinochloa spp., and species of the Cyperaceae family [16].…”

Section: Weed Control In Rice In Spainmentioning

confidence: 99%

An Overview of Rice Cultivation in Spain and the Management of Herbicide-Resistant Weeds

et al. 2021

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Spain is the second highest rice-producing country in the European Union, with approximately 105,000 ha used to grow this crop. The major rice-producing regions in Spain are Andalusia, Extremadura, Catalonia, and Valencia, followed by Aragon and Navarre. The main soil texture throughout Spanish rice areas is silty clay loam, with alkaline soils (pH > 7.5)—except in the Extremadura area (pH = 5.5–6)—and a low organic matter content. Water quality in terms of salinity is acceptable, although in some coastal rice areas salinity issues occasionally appear to be a determining factor for high yield achievement. According to a survey carried out on farmers and technicians, the most problematic weeds found in rice crops today in Spain are Echinochloa spp., Leptochloa spp., and Cyperus difformis. Most of the currently authorized herbicides can be classified according to two modes of action: ALS-inhibiting and ACCase-inhibiting. Repeated field applications of herbicides with the same mode of action have resulted in the selection of herbicide-resistant weeds. At present, resistance has been confirmed in different regions of Spain to ALS inhibitors in Echinochloa spp., Leptochloa spp., and Cyperus difformis, and to ACCase inhibitors in Echinochloa spp. and Leptochloa spp. The mechanism of resistance in these species is a mutation in the target site of these herbicides. Several mutations have been found in the ALS gene, both in Echinochloa spp. and Cyperus difformis, distributed in the different rice-growing regions considered in this work. ACCase gene mutations have been mainly found in Leptochloa spp. individuals from Extremadura and Valencia. These different mutations have resulted in different patterns of cross-resistance to ALS- and ACCase-inhibiting herbicides. It is likely that the repeated use of these two modes of action in rice will result in the evolution of more resistant weed populations. The possible availability of new herbicides with alternative modes of action in a short space of time seems very limited, suggesting the need for a more appropriate use of the available alternative strategies (crop rotation, dry sowing, manual weeding, etc.). This work presents a review of the main characteristics of rice cultivation in Spain, emphasizing the current problems in this crop and the management of herbicide-resistant weeds.

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Section: Weed Control In Rice In Spainmentioning

confidence: 99%

An Overview of Rice Cultivation in Spain and the Management of Herbicide-Resistant Weeds

et al. 2021

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“…Within the Cyperaceae family, ALS resistance has been reported in annual sedges (McCullough et al 2016), C. difformis (Tehranchian et al 2017), C. iria (Riar et al 2017), and C. esculentus (Scarabel et al 2020;Tehranchian et al 2014). However, the only species with confirmed resistance in established turfgrass stands is C. compressus (McCullough et al 2016;Yu et al 2020).…”

Section: Herbicide Response Experimentsmentioning

confidence: 99%

First report of ALS inhibitor–resistant green kyllinga (Kyllinga brevifolia)

et al. 2022

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Acetolactate synthase (ALS) inhibitors provide postemergence control of green kyllinga (Kyllinga brevifolia Rottb.) in turfgrass and other cropping systems. A suspected resistant (R)-biotype of K. brevifolia was collected from a golf course and evaluated for resistance to ALS-inhibitors. In greenhouse experiments, the sulfosulfuron rates required to cause 50% shoot biomass reduction from the nontreated at 4 weeks after treatment (WAT) were 10 and 792 g ai ha−1 for the S (susceptible) and R-biotype, respectively. The rates required to cause 50% injury at 4 WAT were 189 and >3360 g ai ha−1, respectively. In other experiments, shoot mass of the R-biotype was not reduced from the nontreated by imazaquin, trifloxysulfuron-sodium, pyrimisulfan, thiencarbazone + foramsulfuron + halosulfuron, florasulam + halauxifen-methyl, and bentazon, while sulfentrazone reduced biomass similar to the S-biotype. Gene sequencing of the R-biotype revealed a mutation at Asp-376-Glu that has previously conferred resistance to five families of ALS-inhibitors. This is the first report of ALS-inhibitor resistance in K. brevifolia.

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“…The cultivation of tiger nut is widespread across various continents, including Europe, America, Asia, and Africa, for application in medicine, food, and cosmetics [15,16]. Numerous studies underscore its robust resistance to adversity, and adaption to diverse environments with a high yield in sandy soil farmland [13,17,18]. Notably, Tian [13] emphasized the critical role of nitrogen fertilizer in fostering the growth and development of tiger nut in sandy soil conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Nitrogen Addition on Tiger Nut (Cyperus esculentus L.) Rhizosphere Microbial Diversity and Drive Factions of Rhizosphere Soil Multifunctionality in Sandy Farmland

Zheng,

Chen,

Liu

et al. 2024

Agronomy

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Nitrogen (N) is an essential element both affecting rhizosphere microorganisms within soil and supporting plant nutrition; however, little is known about how the rhizosphere microbial community composition of tiger nut in sandy soil responds to nitrogen addition. In this study, high-throughput sequencing technology is employed to analyze the shifts in composition and co-occurrence networks of rhizosphere microbial communities in tiger nut after nitrogen addition in sandy farmland. Results reveal that nitrogen addition significantly increases several soil parameters, including total organic matter (SOC, 32.2%), total nitrogen (TN, 46.2%), alkali-hydro nitrogen (AN, 92.7%), β-1,4-glucosidase (BG, 12.6%), L-leucine aminopeptidase (LAP, 8.62%), β-1,4-xylosidase(XYL, 25.6%), and β-1,4-N-acetylglucosaminidase (NAG, 32.3%). Meanwhile, bacterial α-diversity decreases with nitrogen addition, while fungi remain unaffected. Network analysis indicates a reduction in connections between microorganisms; however, increasing stability is observed in the interaction network after nitrogen addition. Importantly, nitrogen addition leads to the enhancement of rhizosphere soil multifunctionality, with fungal diversity identified as the primary driver of soil multifunctionality. The positive impact of microbial diversity on soil multifunctionality outweighs the relative negative effects. This study sheds light on the nuanced effects of nitrogen addition on rhizosphere microbial diversity and its consequent impact on soil multifunctionality, with Acidobacteria, Proteobacteria and Ascomycota having positive effects, providing a comprehensive understanding of the complex environmental–plant–soil–microbe interactions in sandy farmland ecosystems.

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Occurrence of Resistance to ALS Inhibitors in European Cyperus esculentus L.: Characterisation and Implications for Management

Cited by 6 publications

References 28 publications

An Overview of Rice Cultivation in Spain and the Management of Herbicide-Resistant Weeds

An Overview of Rice Cultivation in Spain and the Management of Herbicide-Resistant Weeds

First report of ALS inhibitor–resistant green kyllinga (Kyllinga brevifolia)

Effect of Nitrogen Addition on Tiger Nut (Cyperus esculentus L.) Rhizosphere Microbial Diversity and Drive Factions of Rhizosphere Soil Multifunctionality in Sandy Farmland

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