Properties of the enzyme acetolactate synthase in herbicide resistant canola

Durigon, Miria Rosa; Mariani, Franciele; Santos, Fernando Machado dos; Várgas, Leandro; Chavarria, Geraldo

doi:10.1590/1678-4499.2017159

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…Similarly, grain yield expressed as seed weight plant −1 in the hybrid Hyola 571CL did not differ from that in the sensitive hybrid (Table 1). Resistance in the hybrid Hyola 571CL is to herbicides of the imidazolinone group only, possibly associated with the mutation at codon 653, from serine to asparagine, with no alteration in the functionality of the ALS enzyme in comparison to the hybrids Hyola 555TT and Hyola 61 (Durigon, Mariani, Santos, Vargas, & Chavarria, 2018). In the same way, the mutation of Ser-653 in wheat and sunflower plants, conferring resistance to the herbicide imazamox, did not cause significant reduction in crop yield (Pozniak, Holm, & Hucl, 2004;Massinga, Al-Khatib, St. Amand, & Miller, 2005).…”

Section: Resultsmentioning

confidence: 87%

Growth of canola hybrids resistant and sensitive to herbicides

Durigon

Cechin

Mariani

et al. 2020

Semina: Ciênc. Agrár.

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Plant growth analysis is useful for determining adequate management practices and exploring the maximum yield potential of cultivars or hybrids. Canola hybrids with resistance to herbicides have been studied and registered for Brazilian conditions, as they improve weed management in canola crops. This study evaluated the growth of canola hybrids resistant to triazine or imidazolinone herbicides compared to a sensitive hybrid. The experiment was conducted using a completely randomized design, with four replications, in a bifactorial scheme using three hybrids and six sampling times. The canola hybrids used were Hyola 571CL (resistant to imidazolinones), Hyola 555TT (resistant to triazines), and Hyola 61 (sensitive to both herbicides). Height, leaf area, and dry matter of roots, leaves, stems, and shoots of the plants were evaluated at 14, 28, 42, 56, 70, and 119 days after emergence (DAE). The physiological indices absolute growth rate, leaf area ratio, specific leaf area, and net assimilation rate were calculated, and yield indices evaluated. Compared to Hyola 61, the Hyola 555TT hybrid showed lower values of leaf dry matter at 70 DAE, absolute growth rate up to 56 DAE, and net assimilation rate at 14 and 28 DAE, and a higher leaf area ratio at 56 DAE, whereas the hybrid Hyola 571CL presented lower leaf area and lower leaf dry matter at 70 DAE. At flowering, compared to Hyola 61, the hybrid Hyola 571CL presents lower leaf area, and the hybrids Hyola 555TT and Hyola 571CL have lower leaf dry matter accumulation. Differences in the growth of canola hybrids Hyola 555TT, Hyola 571CL and Hyola 61 do not cause differences in their grain yield.

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Section: Resultsmentioning

confidence: 87%

Growth of canola hybrids resistant and sensitive to herbicides

Durigon

Cechin

Mariani

et al. 2020

Semina: Ciênc. Agrár.

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“…Os herbicidas podem ocasionar alterações mo metabolismo ou na fisiologia das plantas, com efeitos potencialmente tóxicos (OLIVEIRA Jr. & INOUE 2011, CORREIA & CARVALHO 2021. Fato esse também constatado em outras pesquisas envolvendo a aplicação de herbicidas na cultura da canola (DURIGON et al 2018, UMURZOKOV et al 2019, GALON et al 2022.…”

Section: Resultados E Discussão Experimento Um -Seletividade De Herbi...unclassified

Seletividade e eficácia de herbicidas aplicados em canola para controle de plantas daninhas

Galon,

Balke,

Cavaletti

et al. 2023

Rev. Ciênc. Agrovet.

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O uso de herbicidas para o controle de plantas daninhas é o método mais empregado pela eficácia, rapidez e menor custo, porém poucos são os produtos registrados à cultura da canola. Diante disso, objetivou-se com os trabalhos avaliar a seletividade (ensaio I) e a eficácia (ensaio II) de herbicidas aplicados de modo isolado ou associados em pré e pós-emergência da canola para o controle de plantas daninhas. Os experimentos foram instalados em delineamento de blocos casualizados, com quatro repetições. Em pré-emergência aplicou-se os herbicidas oxyfluorfen, pendimethalin, flumiozaxin, trifluralin e em pós-emergência o fluazifop-p-butil, mais as testemunhas capinada e infestada. Foram avaliadas a fitotoxicidade e as características fisiológicas no ensaio de seletividade, e o controle das plantas daninhas nabo, azevém e aveia preta no experimento de eficácia. Nos dois experimentos determinou-se os números de síliquas por planta, de grãos por síliqua, densidade de plantas, massa de mil grãos e a produtividade de grãos. O oxyfluorfen aplicado em isolado ou associado ao fluazifop-p-butil ocasionou as maiores fitotoxicidades ao híbrido de canola Diamond. As menores fitotoxicidades foram observadas para o pendimethalin e ao fluazifop-p-butil aplicados em isolado ou associados. Todos os herbicidas testados causaram estresse na concentração interna de CO2, transpiração, condutância estomática, atividade fotossintética, eficiência do uso da água e de carboxilação. O flumioxazin e o fluazifop-p-butil aplicados em pré e pós-emergência da canola apresentaram os melhores resultados para os componentes de rendimento de grãos da cultura, especialmente maior produtividade, juntamente com a testemunha capinada no ensaio de seletividade. Nenhum dos tratamentos com herbicidas controlaram adequadamente o nabo (experimento 2), e a presença desta planta daninha afetou negativamente os componentes de rendimento de grãos da canola. O fluazifop-p-butil aplicado em isolado ou associado ao oxifluorfen, pendimethalin, flumioxazin e trifluralin apresentaram os melhores controles de azevém e aveia preta.

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“…So that weed plants experience chlorosis and necrosis.The cessation of activity begins with the inhibition of the synthesis of three of the ten essential amino acids produced by plants, namely the amino acids valine, leucine, and isoleucine or also called Branched-Chain Amino Acids (BCAAs). The inhibition of the synthesis of these three amino acids is carried out by the metsulfuron methyl compound by blocking the pyruvate and ketobutyrate molecules as precursors to approach the active site of the ALS (acetolactate synthase ) and AHAS (acetohydroxyacid synthase ) enzymes(Durigon et al, 2018).…”

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confidence: 99%

Response Of Weed Seed Germination From Fruit Crops Planting Soil To Application Of Metsulfuron Methyl Herbicide And Rice Husk Biochar

Arridho

2021

JUATIKA

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This study aims to determine the effect of the pre-emergence application of the herbicide metsulfuron methyl on the soil mixed with rice husk biochar to the germination of weeds. This study used a factorial completely randomized design (CRD) with two levels of herbicide metsulfuron methyl (0 gr/ha and 300 gr/ha) and four levels of rice husk biochar (0%, 5%, 10%, and 15% of the total weight of the planting medium). The parameters observed were the number of weeds, wet weight of weeds, and dry weight of weeds. The results showed that the interaction of the herbicide metsulfuron methyl and rice husk biochar had no significant effect on weed germination. The single treatment of the herbicide metsulfuron methyl had a significant effect on the number of weeds, wet weight of weeds, and dry weight of weeds. Herbicides can reduce the number of germinated weeds, wet weight of weeds, and dry weight of weeds by 39.3%, 83.7%, and 84.7%, respectively. While the single treatment of rice husk biochar showed a significant effect on the number of weeds and dry weight of weeds. The 15% treatment of rice husk biochar was the best to reduce the number of germinated weeds, namely 76.6%. Rice husk charcoal has the potential to be an alternative to suppress weed seed germination in the soil without using herbicides.

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Properties of the enzyme acetolactate synthase in herbicide resistant canola

Cited by 7 publications

References 13 publications

Growth of canola hybrids resistant and sensitive to herbicides

Growth of canola hybrids resistant and sensitive to herbicides

Seletividade e eficácia de herbicidas aplicados em canola para controle de plantas daninhas

Response Of Weed Seed Germination From Fruit Crops Planting Soil To Application Of Metsulfuron Methyl Herbicide And Rice Husk Biochar

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