Sensitivities of Urochloa decumbens Plants to Glufosinate

Brito, Ivana Paula Ferraz Santos de; Marchesi, Bruna Barboza; Tropaldi, Leandro; Carbonari, Caio Antônio; Velini, Edivaldo Domingues

doi:10.1590/s0100-83582018360100038

Cited by 2 publications

(3 citation statements)

References 21 publications

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“…It acts by inhibiting the enzyme glutamine synthetase (GS), fundamental for nitrogen assimilation. After uptake, plants show rapid accumulation of ammonia accompanied by destruction of chloroplasts, reduced levels of photosynthesis, and decreased production of amino acids, thereby resulting in inhibition of photosynthesis and cell death (Brito et al 2018;Brunharo et al 2014;Sauer et al 1987).…”

Section: Introductionmentioning

confidence: 99%

Metabolic changes, agronomic performance, and quality of seeds in soybean with the pat gene after application of glufosinate

et al. 2020

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The transgenic Liberty Link® (LL) soybean is tolerant to glufosinate, conferred by the enzyme phosphinothricin acetyltransferase (PAT), which is encoded by the pat gene from Streptomyces viridochromogenes. Since in some situations symptoms of injury can be observed in soybean [Glycine max (L.) Merr.] plants, this study evaluated the effects of rates of glufosinate on agronomic performance, quality of LL soybean seeds and the ammonia, glufosinate and N-acetyl-L-glufosinate concentration (NAG) in soybeans with and without the pat gene after application of glufosinate rates. Field and greenhouse experiments were conducted; the first evaluated the selectivity of glufosinate in LL soybeans, and the second, the metabolic changes in soybeans with (LL) and without (RR2) the pat gene, after application of glufosinate. For field work, application of glufosinate, in rates up to four times the maximum recommended, caused initial injury symptoms (up to 38.5%) in LL soybean plants. However, no negative effect was found on seed quality and agronomic performance of LL plants, including yield. This shows the selectivity of glufosinate promoted by pat gene insertion, for application in POST (V4), in LL soybean. For the greenhouse experiment, it was concluded that the LL soybean plants presented high glufosinate metabolism, lower ammonia concentration, and no reduction in dry matter, in comparison with RR2 soybean, after application of high rates of glufosinate.

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Section: Introductionmentioning

confidence: 99%

Metabolic changes, agronomic performance, and quality of seeds in soybean with the pat gene after application of glufosinate

et al. 2020

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“…U. decumbens as a target species usually shows low sensibility to many compounds in phytotoxic bioassays. , In this sense, the results shown here for U. decumbens may be due to the great intrinsic variability of its seeds and its resistance to phytotoxic compounds.…”

Section: Resultsmentioning

confidence: 69%

“…31 U. decumbens as a target species usually shows low sensibility to many compounds in phytotoxic bioassays. 32,33 In this sense, the results shown here for U. decumbens may be due to the great intrinsic variability of its seeds and its resistance to phytotoxic compounds. Thus, the use of this species as a target in the search for new phytotoxic compounds that are able to overcome its resistance is still a big challenge.…”

Section: ■ Results and Discussionmentioning

confidence: 77%

Phytotoxicity Study of Ortho-Disubstituted Disulfides and Their Acyl Derivatives

et al. 2019

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Six different ortho-disubstituted disulfides were synthesized and evaluated in wheat coleoptiles bioassays. The most active ones were evaluated on seeds of four different plant species (Solanum lycopersicum L., Lolium rigidum Gaudin, Echinochloa crus-galli (L.) Beauvois, and Urochloa decumbens (Stapf) R. D. Webster) to evaluate their effects on the germination and plant growth, presenting, in general, higher activity than the model herbicide Logran. The results shown in this study indicate that these compounds are potential candidates as herbicide leads for weed control in agriculture.

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Sensitivities of Urochloa decumbens Plants to Glufosinate

Cited by 2 publications

References 21 publications

Metabolic changes, agronomic performance, and quality of seeds in soybean with the pat gene after application of glufosinate

Metabolic changes, agronomic performance, and quality of seeds in soybean with the pat gene after application of glufosinate

Phytotoxicity Study of Ortho-Disubstituted Disulfides and Their Acyl Derivatives

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