Evolution of Target-Site Resistance to Glyphosate in an Population from Argentina and Its Expression at Different Plant Growth Temperatures. | LitMetric
Syngenta Argentina, Oficina Central, Av. Libertador 1855, Vicente López, Buenos Aires B1638BGE, Argentina.
Published: November 2019
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Article Abstract
The mechanism and expression of resistance to glyphosate at different plant growing temperatures was investigated in an population (VM1) from a soybean field in Vicuña Mackenna, Cordoba, Argentina. Resistance was not due to reduced glyphosate translocation to the meristem or to duplication, as reported for most US samples. In contrast, a proline 106 to serine target-site mutation acting additively with over-expression (1.8-fold increase) was respectively a major and minor contributor to glyphosate resistance in VM1. Resistance indices based on LD values generated using progenies from a cross between 52 PS106 VM1 individuals were estimated at 7.1 for homozygous SS106 and 4.3 for heterozygous PS106 compared with homozygous wild PP106 plants grown at a medium temperature of 24 °C day/18 °C night. A larger proportion of wild and mutant progenies survived a single commonly employed glyphosate rate when maintained at 30 °C day/26 °C night compared with 20 °C day/16 night in a subsequent experiment. Interestingly, the P106S mutation was not identified in any of the 920 plants analysed from 115 US populations, thereby potentially reflecting the difference in control practices in Argentina and USA.
This study examined the growth parameters of both glyphosate-susceptible and glyphosate-resistant biotypes of , designated as GA2005 and GA2017, respectively. A two-year microplot field study was conducted to assess their growth characteristics. Scheduled destructive harvests on named harvest days (HD) were conducted to collect measurements for further calculation of net assimilation rate (NAR; g m day), specific leaf area (SLA), leaf weight ratio (LWR), stem-to-leaf ratio (SLR), leaf area index (LAI), leaf area ratio (LAR; cm g), leaf area duration (LAD; days), relative growth rate (RGR; g.
Background: Glyphosate, as one of the most widely used herbicides worldwide, has been reclassified as a potential carcinogen and linked to multiple health problems. Recent data from animal experiments have proved its potential cardiovascular toxicity. However, whether glyphosate exposure influences human cardiovascular health at the population levels remains unknown.
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Electronic address:
The herbicides glyphosate and glufosinate are commonly used in citrus and sugarcane orchards in Guangxi Province, China, wherein the C plant Eleusine indica (L.) Gaertn. is known to be a dominant weed species.
Overusing pesticides to increase crop productivity is a global problem that harms ecosystems and can adversely affect human health. Therefore, low-cost, simple, and easy-to-use pesticide biomonitoring methods are needed to assess the impact of these products on the environment. In this study, we employed the root development of soybean (Glycine max (L.
The evolution and spread of antibiotic resistance are problems with important consequences for bacterial disease treatment. Antibiotic use in animal production and the subsequent export of antibiotic resistance elements in animal manure to soil is a concern. Recent reports suggest that exposure of pathogenic bacteria to glyphosate increases antibiotic resistance.
