Can light intensity influence the tolerance of <i>Synedrellopsis grisebachii</i> to glyphosate?

Santos, Juciléia Irian dos; Amaral, Cárita Liberato do; Alves, Paulo Roberto Arruda; Gasparino, Eduardo Custódio

doi:10.1111/wbm.12085

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…This differences could be addressed to the use of different glyphosate formulations and dose rate, the application technique (manual or mechanical) employed by farmers, and the agro environment conditions (Neve et al, 2014; Renton et al, 2014; Jussaume and Ervin, 2016; Matzrafi et al, 2016; Owen, 2016). It has been shown that an increase in the relative humidity and temperature increases the glyphosate absorption, translocation, and toxicity in many weed species (Ge et al, 2011; Hatterman-Valenti et al, 2011; Vila-Aiub et al, 2012; Santos et al, 2016). This research also revealed that the low GR 50 and LD 50 values for the susceptible accessions showed that glyphosate has been a very effective tool for farmer for over 15 years, as has been shown in P. hysterophorus from Colombia, Dominican Republic, and Florida (Fernandez, 2013; Rosario et al, 2013; Jimenez et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

Glyphosate-Resistant Parthenium hysterophorus in the Caribbean Islands: Non Target Site Resistance and Target Site Resistance in Relation to Resistance Levels

et al. 2016

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Glyphosate has been the most intensely herbicide used worldwide for decades, and continues to be a single tool for controlling weeds in woody crops. However, the adoption of this herbicide in a wide range of culture systems has led to the emergence of resistant weeds. Glyphosate has been widely used primarily on citrus in the Caribbean area, but a study of resistance in the Caribbean islands of Cuba and the Dominican Republic has never been carried out. Unfortunately, Parthenium hysterophorus has developed glyphosate-resistance in both islands, independently. The resistance level and mechanisms of different P. hysterophorus accessions (three collected in Cuba (Cu-R) and four collected in the Dominican Republic (Do-R) have been studied under greenhouse and laboratory conditions. In in vivo assays (glyphosate dose causing 50% reduction in above-ground vegetative biomass and survival), the resistance factor levels showed susceptible accessions (Cu-S ≥ Do-S), low-resistance accessions (Cu-R3 < Do-R4), medium-resistance accessions (Do-R3 < Cu-R2 < Do-R2) and high-resistance accessions (Do-R1 < Cu-R1). In addition, the resistance factor levels were similar to those found in the shikimic acid accumulation at 1000 μM of glyphosate (Cu-R1 ≥ Do-R1 > Do-R2 > Cu-R2 > Do-R3 > Do-R4 > Cu-R3 >> Cu-S ≥ Do-S). Glyphosate was degraded to aminomethylphosphonic acid, glyoxylate and sarcosine by >88% in resistant accessions except in Cu-R3 and Do-R4 resistant accessions (51.12 and 44.21, respectively), whereas a little glyphosate (<9.32%) was degraded in both susceptible accessions at 96 h after treatment. There were significant differences between P. hysterophorus accessions in the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) activity enzyme with and without different glyphosate rates. The R accessions showed values of between 0.026 and 0.21 μmol μg−1 TSP protein min−1 basal EPSPS activity values with respect to the S (0.024 and 0.025) accessions. The same trend was found in the EPSPS enzyme activity treated with glyphosate, where a higher enzyme activity inhibition (glyphosate μM) corresponded to greater resistance levels in P. hysterophorus accessions. One amino acid substitution was found at position 106 in EPSPS, consisting of a proline to serine change in Cu-R1, Do-R1 Do-R2. The above-mentioned results indicate that high resistance values are determined by the number of defense mechanisms (target-site and non-target-site resistance) possessed by the different P. hysterophorus accessions, concurrently.

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Section: Discussionmentioning

confidence: 99%

Glyphosate-Resistant Parthenium hysterophorus in the Caribbean Islands: Non Target Site Resistance and Target Site Resistance in Relation to Resistance Levels

et al. 2016

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“…In contrast, Sherner et al (2017) reported greater glyphosate efficacy on flooded soils, Tworkoski et al (1998) described greater efficacy under dry soil conditions, and Zanatta et al (2007) found no difference between varying soil moisture levels. The effect of elevated irradiance levels has been shown to increase (Coupland 1983; Kells and Rieck 1979), decrease (Santos et al 2016; Sharkhuu et al 2014), or be unrelated to glyphosate performance (Adkins et al 1998b; Masiunas and Weller 1988).…”

Section: Introductionmentioning

confidence: 99%

Environmental Factors Moderate Glyphosate-induced Antagonism of POST Herbicides on the Rapid Response Biotype of Glyphosate-Resistant Giant Ragweed (Ambrosia trifida)

Harre

Young

2018

Weed Sci

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In the rapid response (RR) biotype of glyphosate-resistant (GR) giant ragweed (Ambrosia trifidaL.), exposure to glyphosate elicits H2O2production in mature leaves, resulting in foliage loss and reduced glyphosate translocation. When glyphosate is applied with POST herbicides intended to improve control ofA. trifida, the RR to glyphosate has the propensity to antagonize these herbicide combinations. This research documents how transient changes in air temperature, soil moisture, and light intensity during a 6-d period surrounding herbicide application regulate induction of the RR and the effect on POST herbicide interactions with glyphosate. Air temperature had the greatest influence on H2O2accumulation in leaf disks following treatment with glyphosate, as plants at 30 C produced more than twice the amount of H2O2at 2.5 h after treatment compared with 10 C. Plants under field capacity conditions accumulated nearly 50% more H2O2than those at one-third field capacity, while those under no shade had only 18% more H2O2compared with those in a shaded environment. Despite these initial results, dry weight reduction at 21 d after treatment never differed by more than 8% between levels of environmental factors, thus indicating a negligible influence on glyphosate efficacy. The magnitude of glyphosate-induced antagonism was generally greater at 30 C (12% to 21% less than expected control) versus 10 C (11% to 16%) on atrazine, cloransulam, dicamba, and topramezone and was greater at field capacity (20% to 24%) versus one-third field capacity (11% to 15%) on cloransulam and topramezone. These results indicate air temperatures and soil moisture levels conducive to optimal plant growth accelerate the RR to glyphosate, thereby increasing the likelihood of glyphosate-induced antagonism on several translocated herbicides.

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“…(Bressanin et al, 2014) and tolerant weeds, such as the tropical spiderwort -Commelina benghalensis L., coatbuttons -Tridax procumbens L., and Cinderella weed -Synedrellopsis grisebachii Hieron. & Kuntze (Santos et al, 2016), which normally infest orange groves (Pinotti et al, 2009). On the other hand, there are several cover crop species with allelopathic potential that can contribute to weed control (Linares et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Integrated methods for weed control in the 'Natal' orange tree

Real¹,

Neto²,

Favaro³

et al. 2021

Científica

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One of the main critical points in the production process of orange trees is the negative interference imposed by weeds. Considering the relevance of this factor, this study aims to evaluate integrated methods for weed control on the yield of orange (Citrus sinensis L.), cv. 'Natal'. A field experiment was carried out in a randomized block design with the following nine treatments: manual weeding of the area associated with maintenance with herbicide; herbicide application in the total area; herbicide application in the total area followed by sowing of jack bean (Canavalia ensiformis L.) between the rows; herbicide application in the total area followed by sowing of the legume in the total area; herbicide application between the rows only in the free space between canopies; herbicide application in the row; herbicide application in the canopy projection; herbicide application in the total area except for the canopy projection; besides a control treatment, without weeding. The herbicide used was glyphosate, always applied at a dose of 1,080 g ha -1 . Among the studied managements, it can be concluded that the manual weeding of the area associated with maintenance with glyphosate (1,080 g ha -1 ); glyphosate application in the total area; glyphosate application in the total area followed by sowing of jack bean between the rows; glyphosate application in the total area followed by sowing of jack beans in the total area; and glyphosate application in the canopy projection resulted in the same yield as the traditional management adopted by the farmer, which consists of glyphosate application in the row. On the other hand, glyphosate application in the total area except for the canopy projection and glyphosate application between the rows only in the free space between canopies were not good weed control methods, resulting in lower yield, whose value was similar to that of the control without weeding (in the bush).

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Can light intensity influence the tolerance of Synedrellopsis grisebachii to glyphosate?

Cited by 5 publications

References 24 publications

Glyphosate-Resistant Parthenium hysterophorus in the Caribbean Islands: Non Target Site Resistance and Target Site Resistance in Relation to Resistance Levels

Glyphosate-Resistant Parthenium hysterophorus in the Caribbean Islands: Non Target Site Resistance and Target Site Resistance in Relation to Resistance Levels

Environmental Factors Moderate Glyphosate-induced Antagonism of POST Herbicides on the Rapid Response Biotype of Glyphosate-Resistant Giant Ragweed (Ambrosia trifida)

Integrated methods for weed control in the 'Natal' orange tree

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