Genetic diversity and geographic distribution of the Bemisia tabaci species complex in Bangladesh

Khatun, Mousumi; Jahan, Sharmin; Lee, Sukchan; Lee, Kyeong-Yeoll

doi:10.1016/j.actatropica.2018.07.021

Cited by 20 publications

(13 citation statements)

References 48 publications

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“…It has a high degree of variability and has played an important role in characterizing the genetic relationships between the B. tabaci cryptic species and haplotypes [53,56,74]. MtCOI has been extensively used in assessing the genetic variability, phylogeographic distribution, and identification of new invasive species of B. tabaci in Africa [10,60,62,75] and elsewhere [76][77][78]. However, recent SNP-genotyping using NextRAD sequencing revealed that mtCOI sequencing is not completely effective at distinguishing cassava-colonizing B. tabaci genotypes [71].…”

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confidence: 99%

Genetic Diversity of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) Colonizing Sweet Potato and Cassava in South Sudan

Misaka

Wosula

Marchelo-d’Ragga

et al. 2020

Insects

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Bemisia tabaci (Gennadius) is a polyphagous, highly destructive pest that is capable of vectoring viruses in most agricultural crops. Currently, information regarding the distribution and genetic diversity of B. tabaci in South Sudan is not available. The objectives of this study were to investigate the genetic variability of B. tabaci infesting sweet potato and cassava in South Sudan. Field surveys were conducted between August 2017 and July and August 2018 in 10 locations in Juba County, Central Equatoria State, South Sudan. The sequences of mitochondrial DNA cytochrome oxidase I (mtCOI) were used to determine the phylogenetic relationships between sampled B. tabaci. Six distinct genetic groups of B. tabaci were identified, including three non-cassava haplotypes (Mediterranean (MED), Indian Ocean (IO), and Uganda) and three cassava haplotypes (Sub-Saharan Africa 1 sub-group 1 (SSA1-SG1), SSA1-SG3, and SSA2). MED predominated on sweet potato and SSA2 on cassava in all of the sampled locations. The Uganda haplotype was also widespread, occurring in five of the sampled locations. This study provides important information on the diversity of B. tabaci species in South Sudan. A comprehensive assessment of the genetic diversity, geographical distribution, population dynamics, and host range of B. tabaci species in South Sudan is vital for its effective management.

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confidence: 99%

Genetic Diversity of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) Colonizing Sweet Potato and Cassava in South Sudan

Misaka

Wosula

Marchelo-d’Ragga

et al. 2020

Insects

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“…Among them, the genetic groups of only Asia II 5 and Asia II 7 were detected in the collected whitefly samples spanning across the Bengal province. Previous reports suggest that Asia II 5 was majorly prevalent in the South Asian countries like Bangladesh, Pakistan, and Nepal (Islam et al, 2018 ; Khatun et al, 2018 ; Acharya et al, 2020 ). In the survey conducted, Asia II 5 was found to be majorly distributed along the southern part of Bengal and associated with a single host crop, that is, eggplant.…”

Section: Discussionmentioning

confidence: 96%

Unraveling the Basis of Neonicotinoid Resistance in Whitefly Species Complex: Role of Endosymbiotic Bacteria and Insecticide Resistance Genes

et al. 2022

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Bemisia tabaci (whitefly) is one of the most detrimental agricultural insect pests and vectors of many plant viruses distributed worldwide. Knowledge of the distribution patterns and insecticide resistance of this cryptic species is crucial for its management. In this study, genetic variation of mitochondrial cytochrome oxidase subunit 1 (MtCoI) gene of B. tabaci was analyzed followed by a study of the infection profile of various endosymbionts in 26 whitefly populations collected from West Bengal, India. Phylogenetic analysis revealed Asia I as the major cryptic species (65.38%), followed by Asia II 5, China 3, and Asia II 7, which were diversified into 20 different haplotypes. In addition to the primary endosymbiont (C. poriera), each of the four whitefly species showed a variable population of three secondary endosymbionts, majorly Arsenophonus with the highest infection rate (73.07%), followed by Wolbachia and Rickettsia. Further phylogenetic analyses revealed the presence of two subgroups of Arsenophonus, viz., A1 and A2, and one each in Wolbachia (W1) and Rickettsia (R3). Resistance to thiamethoxam, imidacloprid, and acetamiprid insecticides was analyzed for a clear picture of pesticide resistance status. The highest susceptibility was noted toward thiamethoxam (LC50 = 5.36 mg/L), followed by imidacloprid and acetamiprid. The whitefly population from Purulia and Hooghly districts bearing Asia II 7 and Asia II 5 cryptic species, respectively, shows maximum resistance. The differences in mean relative titer of four symbiotic bacteria among field populations varied considerably; however, a significant positive linear correlation was observed between the resistance level and relative titer of Arsenophonus and Wolbachia in the case of imidacloprid and thiamethoxam, while only Wolbachia was found in case of acetamiprid. Expression analysis demonstrated differential upregulation of insecticide resistance genes with Purulia and Hooghly populations showing maximally upregulated P450 genes. Moreover, thiamethoxam and imidacloprid resistance ratio (RR) showed a significant correlation with CYP6CM1, CYP6DZ7, and CYP4C64 genes, while acetamiprid RR correlated with CYP6CX1, CYP6DW2, CYP6DZ7, and CYP4C64 genes. Taken together, these findings suggested that P450 mono-oxygenase and symbiotic bacteria together affected whitefly resistance to neonicotinoids. Hence, a symbiont-oriented management programme could be a better alternative to control or delay resistance development in whitefly and can be used for pesticide clean-up in an agricultural field.

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“…Recently, Asia II 5 became the emerging cryptic species distributed in South Asia (Bangladesh, India, Nepal, and Pakistan) (Acharya et al, 2020;Ellango et al, 2015;Islam et al, 2018;Khatun et al, 2018) and Myanmar (GenBank Islam et al, 2018;Lee et al, 2014;Masood et al, 2017;Roopa et al, 2015;Ueda & Brown, 2006).…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of cryptic species of Bemisia tabaci in Asia

Lestari

Khatun

Acharya

et al. 2022

Arch Insect Biochem Physiol

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Genetic diversity and geographic distribution of the Bemisia tabaci species complex in Bangladesh

Cited by 20 publications

References 48 publications

Genetic Diversity of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) Colonizing Sweet Potato and Cassava in South Sudan

Genetic Diversity of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) Colonizing Sweet Potato and Cassava in South Sudan

Unraveling the Basis of Neonicotinoid Resistance in Whitefly Species Complex: Role of Endosymbiotic Bacteria and Insecticide Resistance Genes

Genetic diversity of cryptic species of Bemisia tabaci in Asia

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