Modeling the evolution of herbicide resistance in weed species with a complex life cycle

Holmes, Katherine; Lindquist, John L.; Rebarber, Richard; Werle, Rodrigo; Yerka, Melinda K.; Tenhumberg, Brigitte

doi:10.1002/eap.2473

Cited by 12 publications

(22 citation statements)

References 80 publications

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“…However, then the effect reverses, delaying resistance evolution. This effect is observed for diploids and tetraploid perennials (Holmes et al 2022).…”

Section: Discussionmentioning

confidence: 80%

“…Liu et al (2019) presented an individual-based model, which captures the sexual reproduction, including self-pollination, but lacks a seed bank. The density-dependent discrete model of Holmes et al (2022) comprises both, a seed bank and a bank of rhizome buds. However, it lacks the possibility of de novo resistance evolution, and pure outcrossing is assumed.…”

Section: Introductionmentioning

confidence: 99%

“…Mathematical modelling has proven to be a valuable tool for studying long-term population dynamics of weeds (Holst et al 2007, Freckleton & Stephens 2009). However, the majority of this models deals with annual weeds, the complex life cycle of perennial species has been addressed to a lesser extend (Holst et al, 2007, but see Liu et al, 2019; Holmes et al, 2022). To our knowledge, just two population dynamical models of Sorghum halepense exist so far, comprising the perennial life cycle (Liu et al 2019, Holmes et al 2022).…”

Section: Introductionmentioning

confidence: 99%

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Theoretical assessment of persistence and adaptation in weeds with complex life cycles

Lauenroth

Gokhale

2022

Preprint

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Perennial weed species like Sorghum halepense are a bane of agriculture and lead to significant economic losses. Such weeds can spread quickly and are particularly hard to control due to their ability to reproduce sexually via seeds and asexually through rhizomes. The growing problem of herbicide resistance imposes an additional major challenge on the weed management. Our theoretical study of Sorghum halepense incorporates the complete complex life cycle along with control measures of herbicide application and tillage. We evaluate the extent of control that the different strategies provide and the evolution of herbicide resistance. Our analysis indicates that the natural frequency of target-site resistance mainly depends on the resistance cost and less on its dominance. The sexual phase of the life cycle, including self-pollination and seed bank dynamics, contributes substantially to the persistence and rapid adaptation of the weed. For example, the seed bank significantly increases the probability of escape from control while maintaining genetic variation. We also extend our analysis to study herbicide mixtures, rotations and treatment combinations and how they contribute to reducing control failure. Our model is rooted in observational and experimental data on Sorghum halepense. Still, the general methodology developed herein is extendable to other perennial weeds comprising a complex life cycle. This approach shows how an integrated interdisciplinary view can synergistically contribute to understanding and tackling the global threat to food production presented by resistant weeds.

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“…However, then the effect reverses, delaying resistance evolution. This effect is observed for diploids and tetraploid perennials (Holmes et al 2022).…”

Section: Discussionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Theoretical assessment of persistence and adaptation in weeds with complex life cycles

Lauenroth

Gokhale

2022

Preprint

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“…Wide flowering windows in johnsongrass were also reported in California 45 , Kansas, Missouri, and Nebraska 44 , which corroborates our observations. The high degree of flowering synchrony allows for natural outcrossing among members of Sorghum genera and accelerates the dispersal of resistance-conferring alleles and other novel traits 3 , 9 , 15 , 46 .…”

Section: Resultsmentioning

confidence: 99%

Pollen-mediated transfer of herbicide resistance between johnsongrass (Sorghum halepense) biotypes

Maity

Young

Subramanian

et al. 2022

Sci Rep

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Johnsongrass (Sorghum halepense) is a troublesome weed in row crop production in the United States. Herbicide resistance is a growing concern in this species, with resistance to ACCase-, ALS-, and EPSPS-inhibitors already reported. Pollen-mediated gene flow (PMGF) is capable of spreading herbicide resistance, but the extent of PMGF has not yet been studied in johnsongrass. Field experiments were conducted in a Nelder-wheel design to quantify the distance and frequency of PMGF from ALS-inhibitor-resistant (AR) to -susceptible (AS) johnsongrass across three environments (summer 2018, fall 2018, and fall 2019). The AR biotype (pollen donor) was established at the center of the wheel (5-m diameter), and a naturally occurring johnsongrass (AS) infestation was utilized as the pollen recipient, in eight directions and at nine distances (5, 10, 15, 20, 25, 35, 40, 45, and 50 m) within each direction. Seeds collected from the AS plants in each distance and direction were screened for survival to the ALS-inhibitor herbicide nicosulfuron (Accent Q) at 95 g ai ha−1 under greenhouse conditions. The survivors (i.e. hybrids) were further confirmed based on the presence of the Trp574Leu mutation. At the closest distance of 5 m, PMGF was 9.6–16.2% across the directions and environments, which progressively declined to 0.8–1.2% at 50 m. The exponential decay model predicted 50% reduction in PMGF at 2.2 m and 90% reduction at 5.8 m from the pollen donor block. Results demonstrate that herbicide resistance can spread between adjacent field populations of johnsongrass through PMGF, which necessitates sound monitoring and management.

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“…Coupled with the excessive use of herbicides, the herbicide-resistant weeds in farmland are increasing year by year (Buddenhagen et al, 2021;Green and Siehl, 2021;Holmes et al, 2022). Previous researches have shown that the ptxD/Phi system effectively control weeds in cotton and tobaccos (Lopez-Arredondo and Herrera-Estrella, 2012; Pandeya et al, 2018), but the application of this system in rapeseed has not been reported.…”

Section: Discussionmentioning

confidence: 99%

Generation of novel phosphite-mediated weed control system for Brassica napus by expressing PtxDQ from Ralstonia sp.4506

et al. 2022

Preprint

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Weeds are managed by the herbicides in modern agriculture. However, the herbicide control options are rapidly diminishing due to the recent increased in the number of herbicide-resistant weeds in fields, which affect the sustainable development of agriculture in the future. Plants could absorb phosphite (Phi) through the Pi transporters, but the Phi cannot be metabolized and used as phosphorus (P) fertilizers for crops, which leads to the plant growth inhibition. Previously, a ptxD gene isolated from Ralstonia sp.4506, and a mutagenesis of the Tyr139 to Gln (Y139Q) enhanced activity of PtxD. To evaluate the efficacious of a phosphite-based weed control system in Brassica napus, we generated transgenic B. napus plants with a codon-optimized ptxD (Y139Q, ptxDQ) gene. Ectopic expression of ptxDQ gain an ability to convert Phi into orthophosphate (Pi), leading to improved plant growth in the presence of Phi. When P is supplied in the form of Phi, ptxDQ-expressing B. napus plants outcompete Setaria glauca, in artificial substrates. Additionally, Pi-starvation induced genes were suppressed in ptxDQ transgenic lines by suppling Phi. Overall, the ptxDQ/Phi system provide an effective alternative to suppressing the growth of weeds while providing adequate Pi nutrition to the crops, which in turn will improve the sustainability of agriculture.

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Modeling the evolution of herbicide resistance in weed species with a complex life cycle

Cited by 12 publications

References 80 publications

Theoretical assessment of persistence and adaptation in weeds with complex life cycles

Theoretical assessment of persistence and adaptation in weeds with complex life cycles

Pollen-mediated transfer of herbicide resistance between johnsongrass (Sorghum halepense) biotypes

Generation of novel phosphite-mediated weed control system for Brassica napus by expressing PtxDQ from Ralstonia sp.4506

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