Pesticides affect pollinator abundance and productivity of sunflower (<i>Helianthus annuus</i> L.)

Oliveira, Arthur Carlos de; Junqueira, Camila Nonato; Augusto, Solange Cristina

doi:10.1080/00218839.2018.1494441

Cited by 15 publications

(14 citation statements)

References 34 publications

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“…The use of pesticides is fundamental to modern agriculture, in reducing the prevalence of environmental agents such as weeds or insects that interfere with the development of crops [1,2] . Although commercial herbicides reduce weed growth, there are disadvantages to their use, including the increased growth of pesticide resistant weeds due to continued use, as well as causing damage both to the environment and to human health [3–7] …”

Section: Introductionmentioning

confidence: 99%

Evaluation of Chalcone Derivatives as Photosynthesis and Plant Growth Inhibitors

Pádua

Souza

Sales

et al. 2021

Chemistry & Biodiversity

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We report the evaluation of chalcone derivatives as photosystem II (PSII) and plant growth inhibitors. Chalcone derivatives were evaluated as PSII inhibitors through Chl a fluorescence measurement. (E)-Chalcone (6a) and (E)-3-(4-bromophenyl)-1-(4-fluorophenyl)prop-2-en-1-one (6j) showed the best results, reducing the performance index on absorption basis parameter (PI abs ) by 70 %. Additionally, the decrease of TR 0 /RC and ET 0 / RC parameters indicates that the chalcone derivatives limited the number of active PSII reaction centers and the amount of trapped energy within them. Compounds 6a and 6j both act as post-emergent herbicides at 50 μM, reducing the root biomass of the Ipomoea grandifolia weed by 72 % and 83 %, respectively, corroborating the fluorescence results. The selectivity against weeds as compared to valuable crops by compounds 6a and 6j were evaluated employing Zea mays and Phaseolus vulgaris plants. In these, our newly synthesized compounds showed no effects on biomass accumulation of roots and aerial parts when compared to the control, providing valuable evidence for the role of these compounds as selective inhibitors of the growth of undesired weeds.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Chalcone Derivatives as Photosynthesis and Plant Growth Inhibitors

Pádua

Souza

Sales

et al. 2021

Chemistry & Biodiversity

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“…Bees are of great importance to the ecosystem, pollinating several species of plants, including crops, increasing production. A. mellifera is one of the best-studied species in the world, due to its significant services to the environment and its disappearance, due to factors such as deforestation, climate change and indiscriminate use of agrochemicals, is raising concern (Stein et al, 2017;Sanchez-Bayo et al, 2016;Oliveira et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…The excessive use of agrochemicals in doses above the permitted favors the significant loss of pollinating insects, which can compromise the development of plant species and the survival of all living organisms that depend on plants for a living (Sanchez-Bayo et al, 2016;Oliveira et al, 2018;Chambers et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Honeybees exposed to agrochemicals may not be able to return to their colony because they do not maintain their sense of guidance and location, becoming a global problem due to the large-scale use of these products (Williamson et al, 2014;Oliveira et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Studying and understanding the action of these agrochemicals on bees it is essential to minimize the impact caused by exposure to insecticides, reducing the lethal and sublethal action effects on pollinators (Carreck & Ratnieks, 2014;Williamson et al, 2014;Oliveira et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Toxicological and morphological analysis of Africanized Apis mellifera selected for tolerance to the neonicotinoid thiamethoxam

Pizzaia

Diniz

Silva

et al. 2021

RSD

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Honeybees are the insect most used for pollination purposes due to its efficient characteristics for this function, which reflects in positive aspects for both nature and man. The expansion of agriculture and the development of agrochemicals to combat pests has had negative impacts on honeybee health, causing its disappearance around the world. This research aimed to evaluate the effects of honeybee exposure to the neonicotinoid insecticide thiamethoxam on its survival rate, as well as on morphological and histological changes in the midgut of adult workers from the F4 generation of Apis mellifera queens tolerant to thiamethoxam and non-tolerant worker honeybees. After the bioassays, the midgut was removed for morphological evaluation. The results showed that F4 bees were more tolerance to thiamethoxam and exhibited less significant morphological changes when compared to the non-tolerant control group.

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Effects of pollination on the composition of volatile compounds in Coffea arabica L.

et al. 2022

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BACKGROUND Pollination enhances coffee quality at the material level, improves the symbolic attributes of coffee and promotes sustainability. The objective of this work was to quantify the composition of volatile compounds in roasted coffee produced in the presence and absence of biotic pollination, aiming at investigating the effects of pollination on the composition of volatile compounds in coffee beans. This is the first report of its kind in the literature. RESULTS The analysis of volatile compounds in roasted coffee beans showed that pollination increased the amount of volatile compounds in the beans; there was a significant increase in the amount of the following classes of compounds: pyrazines, pyrroles, pyridines, alcohols and phenols. Considering that most volatile compounds in roasted coffee are derived from reactions involving carbohydrates, proteins, chlorogenic acids and some alkaloids, our hypothesis is that pollinated coffee beans are better prepared for germination and for defense of the crop against attack by external agents. CONCLUSION The findings of this study point to the important role played by sustainable practices implemented in coffee cultivation. The results obtained in this study pave the way toward the conduct of further investigations, including the analysis of the chemical composition of aroma precursors and volatile compounds in raw coffee beans, and the study of the sensory aspects of roasted coffee. © 2022 Society of Chemical Industry.

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Pesticides affect pollinator abundance and productivity of sunflower (Helianthus annuus L.)

Cited by 15 publications

References 34 publications

Evaluation of Chalcone Derivatives as Photosynthesis and Plant Growth Inhibitors

Evaluation of Chalcone Derivatives as Photosynthesis and Plant Growth Inhibitors

Toxicological and morphological analysis of Africanized Apis mellifera selected for tolerance to the neonicotinoid thiamethoxam

Effects of pollination on the composition of volatile compounds in Coffea arabica L.

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