Dominance of Bemisia tabaci MEAM1 species over MED (Hemiptera: Aleyrodidae) in greenhouse vegetables in Mersin, Turkey

Topçu, İlksen; Karaca, Mahmut Mete; Karut, Kamil

doi:10.1007/s12600-020-00794-8

Cited by 7 publications

(6 citation statements)

References 30 publications

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“…The genealogic origins of MEAM1 and MED strains explains the rapid dispersion and adaptation of these B. tabaci species in Brazil since they were previously selected in the other regions of the world to rapid adaptation to new and disturbing environments as the agricultural areas (Barro and Ahmed, 2011;Tang et al, 2019). We believe that the set of facts described here justify our results and may restrain the spread of MED species in open field crops in Brazil (Laarif et al, 2015;Smith et al, 2020;Topçu et al, 2020). However, Brazilian agriculture is characterized by complex landscapes where many crops are cultivated in rotation during the seasons in different climatic and management conditions (Silva et al, 2020;Dourado et al, 2021).…”

Section: Discussionsupporting

confidence: 72%

“…However, our results suggest that MED has not been established on open field crops in Brazil's Central and North regions. Host preference, or even the cultivars, may affects B. tabaci species distribution and dominance (Pascual and Callejas, 2004;Liu et al, 2007;Barro et al, 2006;Smith et al, 2020;Topçu et al, 2020;Gorayeb et al, 2021). In our study, the sampling sites were predominantly on soybean, cotton, and tomato crops, historically colonized by MEAM1 in Brazil (Queiroz et al, 2017).…”

Section: Discussionmentioning

confidence: 70%

“…MED suppressed MEAM1 in some agricultural areas such as in China (Tang et al, 2019;Teng et al, 2020). However, MEAM1 has remained dominant even after MED invasions in other localities, such as Florida (US) and Turkey (Smith et al, 2020;Topçu et al, 2020). In Brazil, MED spread across the southern region (Moraes et al, 2017), mainly on ornamentals and vegetables.…”

Section: Discussionmentioning

confidence: 99%

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Bemisia tabaci MEAM1 still remains the dominant species in open field crops in Brazil

et al. 2024

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Among Bemisia tabaci species, the invasive MEAM1 and MED species are key agricultural pests for many crops. In Brazil, most part of B. tabaci population outbreaks were associated with MEAM1, which, since 1990s quickly spread across the entire country. Later in 2014, the MED was identified in Brazil, initially more restricted to greenhouses, but suddenly reaching new areas in the South and Southeast open regions. Thus, our objective was to investigate the geographical distribution of MEAM1 and MED on open field crops in Brazil. MEAM1 is still the predominant species on open field crops such as soybean, cotton, and tomato. The sequencing of a cytochrome c oxidase subunit I (COI) gene fragment revealed a single haplotype of MEAM1, suggesting the establishment of a single MEAM1 strain in the country. The haplotypes found for MEAM1 and MED are genetically related to the globally dispersed strains, Jap1 and Mch1, respectively. Continuous monitoring of B. tabaci species is crucial because landscape alterations, climatic changes, and pest management methods may shift the B. tabaci species distribution and dominance in Brazilian crop areas.

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Section: Discussionsupporting

confidence: 72%

Section: Discussionmentioning

confidence: 70%

Section: Discussionmentioning

confidence: 99%

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Bemisia tabaci MEAM1 still remains the dominant species in open field crops in Brazil

et al. 2024

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“…Both nymphs and adults can also secrete honeydew, which can induce coal pollution. Besides B biotype (MEAM1) is the dominant species which signi cantly threatened many agricultural commodities in numerous countries [4][5][6] . Moreover, for the excessive use of synthetic pesticides have contributed to resistance development of B. tabaci.…”

Section: Introductionmentioning

confidence: 99%

Isolation, purification and identification of biological compounds from Beauveria sp. and their evaluation as insecticidal effectiveness against Bemisia tabaci

Ahmed

et al. 2021

Preprint

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Bemisia tabaci is one of the most notorious agricultural pests in the world. A vicious circle among insect resistance, dose increased, environment and human body impaired as the overuse of synthetic pesticides are becoming increasingly evident. Entomopathogenic Beauveria sp. is known as an effective natural enemy to control B. tabaci. Therefore, this study aimed to purify and identify the biological compounds from Beauveria sp. LY2 via extensive chromatographic techniques, NMR and MS and evaluated for their insecticidal activities against B. tabaci via contact and stomach toxicity assay. The outcome identified that one new cerebroside, cerebroside F (1), nine known compounds, cerebroside B (2), bassiatin (3), methyl 1,4-dihydro-4-oxo-2-quinolinecarboxylate (4), cerevisterol (5), 9-hydroxycerevisterol (6), 6-dehydrocerevisterol (7), (22E,24R)-ergosta-8(14),22-diene-3β,5α,6β,7α-tetrol (8), melithasterol B (9) and ergosterol peroxide (10) were isolated. Among the known compounds, methyl 1,4-dihydro-4-oxo- 2-quinolinecarboxylate (4) was isolated from natural origin for the first time. It is evident from the results that compounds 3, 4 and 7 strongly featured insecticidal activities against B. tabaci, being the LC50 value as 10.59, 19.05, 26.59 μg/mL respectively in contact as well as 11.42, 5.66, 5.65 μg/mL respectively in stomach experiment. The data from the current study has provided the foundation for the use of newly purified compounds against Bemisia tabaci as an alternative to synthetic chemical compounds.

show abstract

Section: Introductionmentioning

confidence: 99%

Isolation, purification and identification of biological compounds from Beauveria sp. and their evaluation as insecticidal effectiveness against Bemisia tabaci

Ahmed

et al. 2021

Preprint

View full text Add to dashboard Cite

Bemisia tabaci is one of the most notorious agricultural pests in the world. A vicious circle among insect resistance, dose increased, environment and human body impaired as the overuse of synthetic pesticides are becoming increasingly evident. Entomopathogenic Beauveria sp. is known as an effective natural enemy to control B. tabaci. Therefore, this study aimed to purify and identify the biological compounds from Beauveria sp. LY2 via extensive chromatographic techniques, NMR and MS and evaluated for their insecticidal activities against B. tabaci via contact and feeding assay. The outcome identified that one new cerebroside, cerebroside F (1), nine known compounds, cerebroside B (2), bassiatin (3), methyl 1,4-dihydro-4-oxo-2-quinolinecarboxylate (4), cerevisterol (5), 9-hydroxycerevisterol (6), 6-dehydrocerevisterol (7), (22E,24R)-ergosta-8(14),22-diene-3β,5α,6β,7α-tetrol (8), melithasterol B (9) and ergosterol peroxide (10) were isolated. Among the known compounds, methyl 1,4-dihydro-4-oxo- 2-quinolinecarboxylate (4) was isolated from natural origin for the first time. It is evident from the results that compounds 3, 4 and 7 strongly featured insecticidal activities against B. tabaci, being the LC50 value as 10.59, 19.05, 26.59 μg/mL respectively in contact as well as 11.42, 5.66, 5.65 μg/mL respectively in feeding experiment. Moreover, no adverse effect on plant growth/height or phytotoxicity was observed on pepper, cucumber, tomato and cotton. The data from the current study has provided the foundation for the use of newly purified compounds against Bemisia tabaci as an alternative to synthetic chemical compounds.

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Dominance of Bemisia tabaci MEAM1 species over MED (Hemiptera: Aleyrodidae) in greenhouse vegetables in Mersin, Turkey

Cited by 7 publications

References 30 publications

Bemisia tabaci MEAM1 still remains the dominant species in open field crops in Brazil

Bemisia tabaci MEAM1 still remains the dominant species in open field crops in Brazil

Isolation, purification and identification of biological compounds from Beauveria sp. and their evaluation as insecticidal effectiveness against Bemisia tabaci

Isolation, purification and identification of biological compounds from Beauveria sp. and their evaluation as insecticidal effectiveness against Bemisia tabaci

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