Physiological basis for differential tolerance of tomato and pepper to rimsulfuron and halosulfuron: site of action study

Buker, Richard S.; Rathinasabapathi, Bala; Stall, William M.; MacDonald, Greg; Olson, Stephen M.

doi:10.1614/ws-03-046r

Cited by 17 publications

(15 citation statements)

References 26 publications

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“…Cytochrome monoxygenases (P450s) are one of the largest groups of enzyme families that are responsible for plant tolerance to herbicides (Buker, 2004;Beckie et al, 2012;Yu and Powles, 2013;Hamouzova et al, 2014;Rojano Delgado et al, 2014). The P450 enzymes are present in the endoplasmic reticulum and are involved in synthesis of hormones derived from fatty acids and also with the secondary metabolism of plants (Powles and Yu, 2010).…”

Section: Introductionmentioning

confidence: 99%

Tolerance of Common Bean Plants to Ethoxysulfuron Herbicide and the Mechanism Involved in the Process

et al. 2016

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-The objectives of this study were to determine the effect of herbicide ethoxysulfuron on the development of commom bean (Phaseolus vulgaris), to evaluate the impact of the herbicide on the crop grain yield and to determine the mechanism of tolerance of common bean to ethoxysulfuron. Field experiments were carried out with several doses of ethoxysulfuron to determine its effect on the grain yield of two varieties of common bean ("IPR Andorinha", "IPR Tangará"). The mechanism of plant tolerance was evaluated through several methods, including the analysis of the ALS enzyme sensitivity to herbicide and the use of P450 inhibitors (the insecticides malathion + chlorpyrifos) and the use of antidote (mefenpyr-diethyl). When the rate of ethoxysulfuron was 83.2 g ha -1 , the grain yield loss reached 25% (IPR Tangará) and 35% (IPR Andorinha). The ALS enzyme activity was severely reduced even at low concentrations ethoxysulfuron (1 μM), indicating that the mechanism of tolerance is not the insensitivity of the herbicide target enzyme. The inhibitors of herbicide detoxification increased the sensitivity of the bean plants to ethoxysulfuron, and the antidote (stimulator of herbicide degradation) mitigated the herbicidal effect. These results strongly support the hypothesis that the mechanism of tolerance of common bean plants to ethoxysulfuron is enhanced herbicide detoxification.Keywords: Phaseolus vulgaris, crop grain yield, ALS enzyme, detoxification. RESUMO -Os objetivos deste trabalho foram determinar o efeito do herbicida ethoxysulfuron sobre o desenvolvimento do feijoeiro (Phaseolus vulgaris), avaliar o impacto do herbicida sobre o rendimento de grãos e determinar o mecanismo de tolerância do feijoeiro ao ethoxysulfuron. Em campo, foram realizados dois experimentos com doses crescentes de ethoxysulfuron, a fim de determinar o seu efeito sobre o desenvolvimento e o rendimento de grãos de dois cultivares (cvs.) de feijão (IPR Andorinha e IPR Tangará). O mecanismo de tolerância das plantas foi determinado através da análise de sensibilidade da enzima ALS ao herbicida, do uso de inseticidas inibidores da P450 (malathion + chlorpyrifos) e do uso de antídoto (mefenpyr-diethyl). Quando a dose de ethoxysulfuron foi de 83,2 g ha -1 , as perdas de rendimento de grãos atingiram 25% (IPR Tangará) e 35% (IPR Andorinha

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Section: Introductionmentioning

confidence: 99%

Tolerance of Common Bean Plants to Ethoxysulfuron Herbicide and the Mechanism Involved in the Process

et al. 2016

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“…Unlike similar vegetable cropping systems (e.g., tomato, cucumber, and cantaloupe), acceptable long-term alternatives to methyl bromide for nutsedge management in eggplant have not been identifi ed. Halosulfuron (Trade name Sandea, Gowan Co., Yuma, Ariz.) has been identifi ed as a potential herbicide for use in several cucurbit crops (Batts et al, 2001;Brown and Masiunas, 2002;Haar et al, 2002;Johnson and Mullinix, 2002;Webster and Culpepper, 2005;Webster et al, 2003) and solaneceous crops (Buker et al, 2004;Grichar et al, 2003;Haar et al, 2002). Halosulfuron controls purple and yellow nutsedge (Blum et al, 2000;Derr et al, 1996;Vencill et al, 1995), impedes tuber production (Lowe et al, 2000;Nelson and Renner, 2002;Warren and Coble, 1999), reduces tuber viability (Molin et al, 1999), prevents shoot regrowth and reduces nutsedge competitiveness .…”

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confidence: 99%

Eggplant Tolerance to Halosulfuron Applied through Drip Irrigation

Webster¹,

Culpepper²

2005

HortSci

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Halosulfuron is an alternative to methyl bromide for managing nutsedges (Cyperus spp.) in several vegetable crops. Field studies were conducted to evaluate eggplant growth and yield when halosulfuron was applied through drip-irrigation before transplant at four rates (0, 26, 39, or 52 g·ha–1 a.i.) or following transplant (26 g·ha–1 applied 1, 2, or 3 weeks after transplant) in spring and fall crops in 2002 and 2003. Inverse linear relationships were observed between rate of halosulfuron and eggplant growth and rate of halosulfuron and eggplant yield. Halosulfuron at 52 g·ha–1 reduced eggplant growth (crop height and canopy width) 19% to 22%. Eggplant fruit biomass at the first harvest was reduced 37% to 63% by halosulfuron applied before transplant. Eggplant was capable of recovering from the initial injury and there was no effect of halosulfuron rate on fruit biomass at the final harvest. Total season fruit biomass was reduced ≤4% from halosulfuron at 39 g·ha–1, while halosulfuron at 52 g·ha–1 reduced fruit biomass 33%. Delay in application of halosulfuron to 3 weeks after transplant (WAT) resulted in ≤7% reduction in fruit biomass and number for the entire season. When halosulfuron was applied 1 WAT, fruit biomass at the first two harvests was reduced >33%, however total season harvest from this treatment was >99% of the yield from the nontreated control. This preliminary study indicates that halosulfuron injected through drip tape may have the potential to assist in the replacement of methyl bromide for nutsedge management in eggplant. However, there are many issues that must be addressed and studied before adopting this practice in eggplant.

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“…Absorption was rapid initially and reached 42% by 24 HAT, and then it gradually increased to 60% and 70% at 48 and 96 HAT, respectively. Likewise, Buker (2002) reported 40% and 60% absorption of 14 C-halosulfuron in tomato and pepper at 24 and 72 HAT, respectively.…”

Section: Resultsmentioning

confidence: 95%

Absorption, Translocation, and Metabolism of¹⁴C-Halosulfuron in Grafted Eggplant and Tomato

et al. 2017

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Grafted plants are a combination of two different interspecific or intraspecific scion and rootstock. Determination of herbicidal selectivity of the grafted plant is critical given their increased use in vegetable production. Differential absorption, translocation, and metabolism play an important role in herbicide selectivity of plant species because these processes affect the herbicide amount delivered to the site of action. Therefore, experiments were conducted to determine absorption, translocation, and metabolism of halosulfuron in grafted and non-grafted tomato and eggplant. Transplant type included non-grafted tomato cultivar Amelia, non-grafted eggplant cultivar Santana, Amelia scion grafted onto Maxifort tomato rootstock (A-Maxifort) and Santana scion grafted onto Maxifort rootstock (S-Maxifort). Plants were treated POST with commercially formulated halosulfuron at 39 g ai ha-1followed by14C-halosulfuron under controlled laboratory conditions. Amount of14C-halosufuron was quantified in leaf wash, treated leaf, scion shoot, rootstock shoot, and root at 6, 12, 24, 48, and 96 h after treatment (HAT) using liquid scintillation spectrometry. No differences were observed between transplant types with regard to absorption and translocation of14C-halosulfuron. Absorption of14C-halosulfuron increased with time, reaching 10 and 74% of applied at 6 and 96 HAT, respectively. Translocation of14C-halosulfuron was limited to the treated leaf, which reached maximum (66% of applied) at 96 HAT, whereas minimal (<4% of applied) translocation occurred in scion shoot, rootstock shoot, and root. Tomato plants metabolized halosulfuron faster compared to eggplant regardless of grafting. Of the total amount of14C-halosulfuron absorbed into the plant, 9 to 14% remained in the form of the parent compound in tomato compared with 25 to 26% in eggplant at 48 HAT. These results indicate that grafting did not affect absorption, translocation, and metabolism of POST halosulfuron in tomato and eggplant.

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Physiological basis for differential tolerance of tomato and pepper to rimsulfuron and halosulfuron: site of action study

Cited by 17 publications

References 26 publications

Tolerance of Common Bean Plants to Ethoxysulfuron Herbicide and the Mechanism Involved in the Process

Tolerance of Common Bean Plants to Ethoxysulfuron Herbicide and the Mechanism Involved in the Process

Eggplant Tolerance to Halosulfuron Applied through Drip Irrigation

Absorption, Translocation, and Metabolism of¹⁴C-Halosulfuron in Grafted Eggplant and Tomato

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Physiological basis for differential tolerance of tomato and pepper to rimsulfuron and halosulfuron: site of action study

Cited by 17 publications

References 26 publications

Tolerance of Common Bean Plants to Ethoxysulfuron Herbicide and the Mechanism Involved in the Process

Tolerance of Common Bean Plants to Ethoxysulfuron Herbicide and the Mechanism Involved in the Process

Eggplant Tolerance to Halosulfuron Applied through Drip Irrigation

Absorption, Translocation, and Metabolism of14C-Halosulfuron in Grafted Eggplant and Tomato

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Absorption, Translocation, and Metabolism of¹⁴C-Halosulfuron in Grafted Eggplant and Tomato