Weed Adaptation as a Driving Force for Weed Persistence in Agroecosystems

Neve, Paul; Caicedo, Ana L.

doi:10.1002/9781119525622.ch15

Cited by 3 publications

(4 citation statements)

References 105 publications

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“…Since the dawn of agriculture, weeds have undergone adaptative evolution to proliferate and escape eradication (Vigueira et al, 2013). They arose simultaneously with crop domestication through three possible routes: standing variation of wild species, hybridization between wild and crop taxa (exoferality), and direct de-domestication from crop cultivars (endoferality) (Bagavathiannan & Van Acker, 2008;Ellstrand et al, 2010;Gressel, 2005;Neve & Caicedo, 2022;Wet & Harlan, 1975). Agricultural weeds -which strongly compete with crops for resources-are responsible for the highest potential crop losses in productivity (34%), with animal pests and pathogens coming behind (with losses of 18 and 16%, respectively) (Oerke, 2006).…”

Section: Introductionmentioning

confidence: 99%

Adaptive introgression from local cultivars is a driver of agricultural adaptation in Argentinian weedy rice

Presotto,

Hernández,

Vercellino

et al. 2023

Preprint

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Weedy rice, a pervasive and troublesome weed found across the globe, has often evolved through feralization of rice cultivars. In the South American Southern Cone region, rice breeding has a contemporary history and weedy rice has been reported as an important constraint since early 1970s; however the origin and genetic composition of Argentinian weedy rice has not been explored so far. To study this, we used genotyping-by-sequencing to generate genome-wide single nucleotide polymorphisms (SNPs) and compared Argentinian weedy rice with whole-genome data from strains, rice cultivars and wild rice accessions from regions worldwide. In addition, we conducted a comprehensive seed and phenological characterization, and performed an herbicide resistance screening, taking into account mutations in the ALS gene observed in the Argentinian weedy rice collection. Our results revealed large variability in seed traits and flowering time in Argentinian weedy rice. Additionally, most strains were resistant to ALS-inhibiting herbicides with a high frequency of the ALS mutation (A122T), which is also present in Argentinian rice cultivars. Cultivated rice varieties in Argentina belonged to the three major groups: japonica, indica and aus. In contrast, Argentinian weedy rice strains were mostly aus and aus-indica hybrids, resembling cultivars and weedy rice strains from the Southern Cone region. Our findings suggest that Argentinian weedy rice descends from aus weeds, presumably from the United States, which contemporaneously hybridized with local indica cultivars. The observed genetic similarities within the Southern Cone region can be attributed to the continuous exchange of breeding germplasm and cultivars, which, in turn, facilitated the dissemination of weedy rice strains.

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Section: Introductionmentioning

confidence: 99%

Adaptive introgression from local cultivars is a driver of agricultural adaptation in Argentinian weedy rice

Presotto,

Hernández,

Vercellino

et al. 2023

Preprint

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“…Weeds have great potential as model systems in which to understand plant responses to biotic and abiotic stresses (Vigueira et al 2013 ). They can survive in disrupted environments and persist under multiple challenges, in particular escaping from control measures in the field, including targeted tillage practices, herbicide use, and hand-weeding (Sharma et al 2021 ; Neve and Caicedo 2022 ). In addition, weeds are not distributed in limited ecological niches, but rather, they often exhibit a widespread distribution, even among areas with distinct conditions, exemplifying their strong environmental plasticity (Sharma et al 2021 ).…”

Section: Genomic Insights Into Weed Biologymentioning

confidence: 99%

Weed genomics: yielding insights into the genetics of weedy traits for crop improvement

Huang

et al. 2023

aBIOTECH

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Weeds cause tremendous economic and ecological damage worldwide. The number of genomes established for weed species has sharply increased during the recent decade, with some 26 weed species having been sequenced and de novo genomes assembled. These genomes range from 270 Mb (Barbarea vulgaris) to almost 4.4 Gb (Aegilops tauschii). Importantly, chromosome-level assemblies are now available for 17 of these 26 species, and genomic investigations on weed populations have been conducted in at least 12 species. The resulting genomic data have greatly facilitated studies of weed management and biology, especially origin and evolution. Available weed genomes have indeed revealed valuable weed-derived genetic materials for crop improvement. In this review, we summarize the recent progress made in weed genomics and provide a perspective for further exploitation in this emerging field.

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“…Since the dawn of agriculture, weeds have undergone adaptive evolution to proliferate and escape eradication (Vigueira et al., 2013). They arose simultaneously with crop domestication through three possible routes: standing variation of wild species, hybridization between wild and crop taxa (exoferality), and direct de‐domestication from crop cultivars (endoferality; Bagavathiannan & Van Acker, 2008; De Wet & Harlan, 1975; Ellstrand et al., 2010; Gressel, 2005; Neve & Caicedo, 2022). Agricultural weeds – which strongly compete with crops for resources – are responsible for the highest potential crop losses in productivity (34%), with animal pests and pathogens coming behind (with losses of 18 and 16%, respectively; Oerke, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…& Van Acker, 2008;De Wet & Harlan, 1975;Ellstrand et al, 2010;Gressel, 2005;Neve & Caicedo, 2022). Agricultural weeds -which strongly compete with crops for resources -are responsible for the highest potential crop losses in productivity (34%), with animal pests and pathogens coming behind (with losses of 18 and 16%, respectively; Oerke, 2006).…”

mentioning

confidence: 99%

Introgression from local cultivars is a driver of agricultural adaptation in Argentinian weedy rice

Presotto,

Hernández,

Vercellino

et al. 2024

Molecular Ecology

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Weedy rice, a pervasive and troublesome weed found across the globe, has often evolved through fertilization of rice cultivars with little importance of crop‐weed gene flow. In Argentina, weedy rice has been reported as an important constraint since the early 1970s, and, in the last few years, strains with herbicide‐resistance are suspected to evolve. Despite their importance, the origin and genetic composition of Argentinian weedy rice as well its adaptation to agricultural environments has not been explored so far. To study this, we conducted genotyping‐by‐sequencing on samples of Argentinian weedy and cultivated rice and compared them with published data from weedy, cultivated and wild rice accessions distributed worldwide. In addition, we conducted a phenotypic characterization for weedy‐related traits, a herbicide resistance screening and genotyped accessions for known mutations in the acetolactate synthase (ALS) gene, which confers herbicide resistance. Our results revealed large phenotypic variability in Argentinian weedy rice. Most strains were resistant to ALS‐inhibiting herbicides with a high frequency of the ALS mutation (A122T) present in Argentinian rice cultivars. Argentinian cultivars belonged to the three major genetic groups of rice: japonica, indica and aus while weeds were mostly aus or aus‐indica admixed, resembling weedy rice strains from the Southern Cone region. Phylogenetic analysis supports a single origin for aus‐like South American weeds, likely as seed contaminants from the United States, and then admixture with local indica cultivars. Our findings demonstrate that crop to weed introgression can facilitate rapid adaptation to agriculture environments.

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Weed Adaptation as a Driving Force for Weed Persistence in Agroecosystems

Cited by 3 publications

References 105 publications

Adaptive introgression from local cultivars is a driver of agricultural adaptation in Argentinian weedy rice

Adaptive introgression from local cultivars is a driver of agricultural adaptation in Argentinian weedy rice

Weed genomics: yielding insights into the genetics of weedy traits for crop improvement

Introgression from local cultivars is a driver of agricultural adaptation in Argentinian weedy rice

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