ArticleGenes & genomics2025
Aneusomaty in glyphosate-resistant Amaranthus palmeri and its hybrid with Amaranthus tuberculatus.
Article in Genes & genomics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Herbicide Resistance Genes in Crops: Mechanisms, Progress, and Future Perspectives.Plants (Basel, Switzerland) · 2026Review
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4 authors.
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Abstract
backgroundGlyphosate [N-(phosphonomethyl) Glycine], commonly known as Roundup, is one of the most widely used herbicides for controlling crop weeds. However, its extensive use has led to the rapid evolution of glyphosate-resistant (GR) weed populations, often via amplification of the target gene EPSPS (5-enolpyruvylshikimate-3-phosphate synthase), sometimes accompanied by chromosomal abnormalities.
objectiveThis study investigates the occurrence and characteristics of aneusomaty in GR Amaranthus palmeri and its interspecific hybrids with A. tuberculatus.
methodsFluorescence in situ hybridization (FISH) was used to cytologically characterize glyphosate resistance and aneusomaty in A. palmeri.
resultsAneusomaty was observed in GR A. palmeri and its hybrids with A. tuberculatus. Root tips from a single GR A. palmeri plant exhibited two distinct chromosome numbers: 2n = 34 and 2n = 68. Similarly, F1 hybrid root tips [A. tuberculatus (2n = 32) x A. palmeri (2n = 34)] displayed 2n = 33 and 2n = 66. The pseudo F
conclusionOur results suggest that aneusomaty-related increases in chromosome numbers during the sporophytic phase may facilitate EPSPS gene duplication, offering a previously unrecognized mechanism contributing to glyphosate resistance in A. palmeri.
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