CARACTERÍSTICAS ESTRUCTURALES Y FISIOLÓGICAS DE Petunia axillaris RELACIONADAS CON SU BAJA SENSIBILIDAD A GLIFOSATO

Dellaferrera, Ignacio; Panigo, Elisa; Gonzalez-Torralba, F.; Christoffoleti, Pedro Jacob; Perreta, Mariel Gladis

doi:10.1590/s0100-83582015000300008

Cited by 4 publications

(5 citation statements)

References 29 publications

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“…However, the emergence of new shoots after application increased the degree of branching ( Figure 2C). This increase in branch order and number due to the development of axillary buds, originally inhibited in no-treated plants, has been reported in other perennial species that have survived the application of glyphosate (Panigo et al, 2012;Dellaferrera et al, 2015). Treated plants redirected resources to the production of new shoots, which allows them to recover photosynthetically active foliar mass loss.…”

Section: Morpho-architectural Variations Of the Shoot Systemmentioning

confidence: 56%

“…The plants treated with the higher dose developed a higher proportion of fourth-order branches than the others as a consequence of the severe injuries observed in shoots of lower orders. Therefore, the glyphosate doses applied were positively correlated with an increase in the complexity of the branching system as in others glyphosate tolerant species (Panigo et al, 2012;Dellaferrera et al, 2015).…”

Section: (B) (C) (A) (D) (E)mentioning

confidence: 72%

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

Panigo¹,

Alesso²,

Dellaferrera³

et al. 2016

Planta daninha

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-Eustachys retusa has low sensitivity to glyphosate at the reproductive stage. The purpose of this study was to analyze the effect of glyphosate on adult E. retusa plants in order to identify the traits that make possible their regeneration in no-tillage systems. For this purpose, reproductive-stage specimens from wild populations were treated with glyphosate at two different rates (480 and 1,200 g a.i. ha dose. However, a certain proportion of plants can survive despite having full chlorosis as a consequence of basal bud activation (bud bank) and the presence of reserves in the rhizome. These combinations of morphological traits facilitate the recovery of foliar mass in some plants after the application of the herbicide. This behavior represents a serious problem because E. retusa plants retain the ability to regrow. This shows that, E. retusa management at reproductive stage must be complemented with other cultural and/or chemical tactics.Keywords: argentine fingergrass, herbicide, weed, tolerance, morphological changes. RESUMO -Eustachys

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Section: Morpho-architectural Variations Of the Shoot Systemmentioning

confidence: 56%

Section: (B) (C) (A) (D) (E)mentioning

confidence: 72%

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

Panigo¹,

Alesso²,

Dellaferrera³

et al. 2016

Planta daninha

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“…It is well known that the bud bank is strongly related to shoot architecture. The activation of originally inhibited buds in treated plants (Panigo et al, 2012(Panigo et al, , 2016, allowed weeds to survive to herbicide application by altering their growth pattern (Malpassi, 2005;Dellaferrera et al, 2015). The development of an average maximum of three extra branches per axis was frequent in the treated axes.…”

Section: Discussionmentioning

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%

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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“…The ability to reproduce both sexually and vegetatively and to present morphological variations during its growth cycle contribute to the propagation, adaptation, and rapid growth of the species in banana plantations (Brenes-Prendas et al, 2012). These morphological, structural, and physiological factors could also confer adaptive advantages of a population weed that would allow it to survive and increase in systems with intensive use of glyphosate (Dellaferrera et al, 2015). However, studies on the specific morphological and physiological characteristics that might confer glyphosate tolerance to S. podophyllum are necessary.…”

Section: Ld90mentioning

confidence: 99%

Susceptibility of weed populations to glyphosate in banana plantations of the Department of Magdalena, Colombia

Quintero-Pertuz

Hoyos

Carbonó-Delahoz

et al. 2021

Chil. j. agric. res.

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The prevalence and deficient control with glyphosate in some weeds in banana (Musa × paradisiaca L.) plantations in the Department of Magdalena, Colombia, have been evidenced. The susceptibility to glyphosate of prevalent weeds in farms with more than 10 yr of application of this herbicide was evaluated. Seeds and propagules of adult plants of five weedy species were collected from farms where deficient glyphosate control was observed (populations with possible resistance) and in areas not cultivated or free of herbicide use (susceptible populations). Under controlled conditions, seedlings obtained from 17 populations were treated with a commercial dose of glyphosate (1440 g acid equivalent [ae] ha -1 ) or twice this dose (2880 g ae ha -1 ). At 21 d after application, populations with a relative fresh weight and survival greater than 20% and visual control lower than 80% were categorized as resistant populations. To determine the resistance factor (RF) in the resistant populations, bioassays were performed with increasing doses of the herbicide (0, 720, 1440, 2880, 5760, and 11 520 g ae ha -1 ). Populations of Echinochloa colona (L.) Link and Melothria pendula L. were sensitive to both doses, while the populations of Commelina erecta L. and Syngonium podophyllum Schott were not controlled, confirming glyphosate-tolerant. Populations of Erigeron bonariensis L., from uncultivated areas was susceptible, while those from farms were resistant. Glyphosate-resistance was confirmed in two populations of E. bonariensis, with respective RF of 3.5 and 8.6. The repetitive application of glyphosate for weed control in the Magdalena banana farms has contributed to the prevalence of tolerant species and the appearance of herbicide-resistant weeds.

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CARACTERÍSTICAS ESTRUCTURALES Y FISIOLÓGICAS DE Petunia axillaris RELACIONADAS CON SU BAJA SENSIBILIDAD A GLIFOSATO

Cited by 4 publications

References 29 publications

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

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

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

Susceptibility of weed populations to glyphosate in banana plantations of the Department of Magdalena, Colombia

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