Morpho-Architectural Traits that Allow the Regeneration of Eustachys retusa (poaceae) in Systems with Intensive Glyphosate Application

Panigo, Elisa; Alesso, Carlos Agustín; Dellaferrera, Ignacio; Olivella, J.; Perreta, Mariel Gladis

doi:10.1590/s0100-83582016340400011

Cited by 2 publications

(9 citation statements)

References 20 publications

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“…For this purpose, the nodes per axes were divided into three groups based on their position along the principal axis. These groups or zones were designated as apical, mid, and basal according to previous studies (Panigo et al, 2012(Panigo et al, , 2016.…”

Section: Methodsmentioning

confidence: 99%

“…Kunth (Argentine fingergrass) are plant species native to South America and frequently reported as species with low sensitivity to glyphosate (Puricelli & Faccini, 2005;Dellaferrera et al, 2007;Nisensohn et al, 2011;Panigo et al, 2012Panigo et al, , 2016. In previous morphological studies, we found that both species survive after glyphosate applications thanks to their ability to recover foliar mass through the regrowth of buds that are not developed under normal conditions (Panigo et al, 2012(Panigo et al, , 2016. Therefore, the application of glyphosate to C. erecta and E. retusa would not affect their bud bank and consequently their ability to resprout.…”

Section: Commelina Erecta L (Dayflower) Andmentioning

confidence: 99%

“…Glyphosate [Estrella, glyphosate as the isopropylamine salt at 480 g L −1 (48% w / v) (ACA)] was applied on day 0 of the experiment, with an experimental spray chamber using a flat fan nozzle (FE80/0.8/3) calibrated to deliver 200 L ha −1 at a pressure of 275 kPa. The selection of doses was based both on the recommendations of Phytosanitary Products Guide for Argentina (CASAFE, 2007) and on previous studies (Panigo et al, 2012(Panigo et al, , 2016. For each species, the herbicide treatments included two doses of glyphosate and an untreated control.…”

Section: Herbicide Treatmentsmentioning

confidence: 99%

“…In agroecosystems, this role has been mainly related to grazing (Busso et al, 1989(Busso et al, , 2011Hendrickson & Briske, 1997). However, after herbicide application and destruction of most of its above-ground biomass, certain perennials species can resprout (Malpassi, 2005;Panigo et al, 2012Panigo et al, , 2016Dellaferrera et al, 2015). Plants have two strategies to deal with severe agricultural disturbance: shortening their life cycle and surviving disturbance events as seeds (avoidance), or by means of underground bud banks with large regeneration capacity (tolerance) (Klimešová et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Commelina erecta (Commelinaceae) and Eustachys retusa (Poaceae) were studied because we identified, through architectural analysis, combinations of morphological features that facilitate regrowth after herbicide applications (Panigo et al, 2012(Panigo et al, , 2016. Commelina erecta is a perennial herb, with adventitious roots and a rhizome system (Panigo & Nisensohn, 2018).…”

Section: Introductionmentioning

confidence: 99%

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The role of bud bank in glyphosate tolerance of two herbaceous species

Panigo¹,

Dellaferrera²,

Alesso³

et al. 2019

Bol. Soc. Argent. Bot.

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Background and aims: Commelina erecta and Eutsachys retusa are two perennial weeds, which show high resprouting after glyphosate application. This behavior represents a serious problem for weed management. The purpose of this study was to characterize the bud bank of both species and to assess their response to glyphosate application. M&M: We analyzed 120 reproductive shoots of C. erecta, and 80 reproductive shoots of E. retusa, at 30- and 60-days post- herbicide application. The doses applied to C. erecta were 0 (control), 1.200 and 2.400 g a.i. ha -1 , and to E. retusa were 0 (control), 480 and 1200 g a.i. ha -1 . Results: We found that both species presented active buds in approximately 50% of their nodes, even after herbicide application. Bud bank dynamics changed in both weeds after herbicide application, and therefore their growth pattern. The activation of originally inhibited buds allowed weeds to regrow and survive after glyphosate application altering their architecture. Conclusions: The bud bank plays an important role in glyphosate tolerance in both weeds. The resprouting capacity in both species was similar for any dose of glyphosate applied. Therefore, an alternative control strategy based on the increase of the dose of herbicide would not be a successful alternative for the management of these weeds. The interruption of the storage of reserves in the rhizome system and the reduction of the number of buds would be key to effective long-term management of these and other perennial weeds in no tillage cropping system.

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Section: Methodsmentioning

confidence: 99%

Section: Commelina Erecta L (Dayflower) Andmentioning

confidence: 99%

Section: Herbicide Treatmentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The role of bud bank in glyphosate tolerance of two herbaceous species

Panigo¹,

Dellaferrera²,

Alesso³

et al. 2019

Bol. Soc. Argent. Bot.

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Morphological characterization of the foliar surface in glyphosate‐resistant tall windmill grass

et al. 2021

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Even though glyphosate resistance in tall windmill grass (Chloris elata Desv.) was initially reported in 2014, the resistance mechanisms have not yet been completely elucidated. Previous research found evidence of a non‐target site mechanism limiting the herbicide from reaching its enzyme target. We investigated the foliar morphology of tall windmill grass biotypes at different leaf developmental stages and correlated these results with glyphosate‐resistance levels. The biotypes were sprayed with glyphosate and their foliar anatomy was characterized at the four‐ to six‐leaf stages using scanning electronic microscopy. Samples were analyzed for stomata and trichome density and stomatal index was calculated. The resistant tall windmill grass biotype showed lower stomatal density at the four‐leaf stage and greater trichome density at the four‐ and six‐leaf stages, compared to the susceptible biotype, which might contribute to less herbicide uptake. Both biotypes had wax crystal formations surrounding the stomatal pore in plants at the six‐leaf stage, which could also contribute to the lower glyphosate susceptibility in older plants.

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Morpho-Architectural Traits that Allow the Regeneration of Eustachys retusa (poaceae) in Systems with Intensive Glyphosate Application

Cited by 2 publications

References 20 publications

The role of bud bank in glyphosate tolerance of two herbaceous species

The role of bud bank in glyphosate tolerance of two herbaceous species

Morphological characterization of the foliar surface in glyphosate‐resistant tall windmill grass

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