Genetic diversity of cryptic species of <i>Bemisia tabaci</i> in Asia

Lestari, Susanti Mugi; Khatun, Mousumi; Acharya, Rajendra; Sharma, Sushant Raj; Shrestha, Yam Kumar; Jahan, Sharmin; Aye, Tin-Tin; Lynn, Ohn Mar; Win, Nang Kyu Kyu; Hoat, Trinh Xuan; Dao, Hang Thi; Tsai, Chang‐Her; Lee, Jangha; Hwang, Hwal‐Su; Kil, Eui-Joon; Lee, Sukchan; Kim, Sang-Mok; Lee, Kyeong-Yeoll

doi:10.1002/arch.21981

Cited by 3 publications

(4 citation statements)

References 56 publications

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“…Moreover, several studies have shown the distribution of the NCS in Asia was closely related to the certain geographical and climatic conditions. For example, B. tabaci Asia I was first reported in China in the 1990s, which was the most widely distributed cryptic species in Asia [ 47 , 48 , 49 , 50 ]. Asia II is a complex of several genetic types that have emerged more recently and have displaced the Asia I biotype in some regions [ 19 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

“…Asia II is a complex of several genetic types that have emerged more recently and have displaced the Asia I biotype in some regions [ 19 , 51 ]. Asia II 1 is the most widespread and damaging cryptic species in South Asia [ 47 ], particularly in India and Pakistan, where it infests cotton, tomato, tobacco, and other crops. Asia II 5 has been found in some countries, such as Bangladesh, India, Indonesia, Nepal and Pakistan [ 47 , 48 , 52 , 53 ].…”

Section: Discussionmentioning

confidence: 99%

“…Asia II 1 is the most widespread and damaging cryptic species in South Asia [ 47 ], particularly in India and Pakistan, where it infests cotton, tomato, tobacco, and other crops. Asia II 5 has been found in some countries, such as Bangladesh, India, Indonesia, Nepal and Pakistan [ 47 , 48 , 52 , 53 ]. Asia II 2 to Asia II 4, Asia II 9, Asia IV, and Asia V are less common species that are limited to China [ 19 , 46 ].…”

Section: Discussionmentioning

confidence: 99%

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Ecological Factors Associated with the Distribution of Bemisia tabaci Cryptic Species and Their Facultative Endosymbionts

zhihui

Zhou

et al. 2023

Insects

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The sweetpotato whitefly, Bemisia tabaci species complex, comprises at least 44 morphologically indistinguishable cryptic species, whose endosymbiont infection patterns often varied at the spatial and temporal dimension. However, the effects of ecological factors (e.g., climatic or geographical factors) on the distribution of whitefly and the infection frequencies of their endosymbionts have not been fully elucidated. We, here, analyzed the associations between ecological factors and the distribution of whitefly and their three facultative endosymbionts (Candidatus Cardinium hertigii, Candidatus Hamiltonella defensa, and Rickettsia sp.) by screening 665 individuals collected from 29 geographical localities across China. The study identified eight B. tabaci species via mitochondrial cytochrome oxidase I (mtCOI) gene sequence alignment: two invasive species, MED (66.9%) and MEAM1 (12.2%), and six native cryptic species (20.9%), which differed in distribution patterns, ecological niches, and high suitability areas. The infection frequencies of the three endosymbionts in different cryptic species were distinct and multiple infections were relatively common in B. tabaci MED populations. Furthermore, the annual mean temperature positively affected Cardinium sp. and Rickettsia sp. infection frequencies in B. tabaci MED but negatively affected the quantitative distribution of B. tabaci MED, which indicates that Cardinium sp. and Rickettsia sp. maybe play a crucial role in the thermotolerance of B. tabaci MED, although the host whitefly per se exhibits no resistance to high temperature. Our findings revealed the complex effects of ecological factors on the expansion of the invasive whitefly.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Ecological Factors Associated with the Distribution of Bemisia tabaci Cryptic Species and Their Facultative Endosymbionts

zhihui

Zhou

et al. 2023

Insects

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“…BGVs rely on the obligate transmission by an insect vector, primarily whitefly species, such as Bemisia tabaci , or other whiteflies [ 3 , 4 ], which facilitates their quick and effective spread due to the insect’s indiscriminate feeding behavior. The B. tabaci whitefly complex comprises over 35 cryptic species that cannot be distinguished morphologically or by traditional classification methods, and this complex is capable of transmitting over 200 species of BGVs [ 5 , 6 ]. This leads to many potential interactions in nature, with over 200 species of BGVs, more than 35 cryptic B. tabaci species, and hundreds of crop species and varieties [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Genome Analysis of Old World and New World TYLCV Reveals a Biasness toward Highly Variable Amino Acids in Coat Protein

Nigam

Muthukrishnan

Flores-López

et al. 2023

Plants

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Begomoviruses, belonging to the family Geminiviridae and the genus Begomovirus, are DNA viruses that are transmitted by whitefly Bemisia tabaci (Gennadius) in a circulative persistent manner. They can easily adapt to new hosts and environments due to their wide host range and global distribution. However, the factors responsible for their adaptability and coevolutionary forces are yet to be explored. Among BGVs, TYLCV exhibits the broadest range of hosts. In this study, we have identified variable and coevolving amino acid sites in the proteins of Tomato yellow leaf curl virus (TYLCV) isolates from Old World (African, Indian, Japanese, and Oceania) and New World (Central and Southern America). We focused on mutations in the coat protein (CP), as it is highly variable and interacts with both vectors and host plants. Our observations indicate that some mutations were accumulating in Old World TYLCV isolates due to positive selection, with the S149N mutation being of particular interest. This mutation is associated with TYLCV isolates that have spread in Europe and Asia and is dominant in 78% of TYLCV isolates. On the other hand, the S149T mutation is restricted to isolates from Saudi Arabia. We further explored the implications of these amino acid changes through structural modeling. The results presented in this study suggest that certain hypervariable regions in the genome of TYLCV are conserved and may be important for adapting to different host environments. These regions could contribute to the mutational robustness of the virus, allowing it to persist in different host populations.

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Disparities in Genetic Diversity Drive the Population Displacement of Two Invasive Cryptic Species of the Bemisia tabaci Complex in China

Xue,

Wang,

Chen

et al. 2024

IJMS

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Within the whitefly Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) complex, two cryptic species, namely Middle East-Asia Minor 1 (MEAM1) and Mediterranean (MED), are important invasive pests affecting global agriculture and horticulture. They were introduced into China sequentially in the mid-1990s and around 2003, respectively. Subsequently, the latter invader MED has outcompeted the earlier invader MEAM1, becoming the dominant population in the field. Although extensive studies have explored the underlying mechanisms driving this shift, the contribution of population genetics remains notably underexplored. In this study, we analyzed the genetic diversity and structure of 22 MED and 8 MEAM1 populations from various regions of China using mitochondrial DNA sequencing and microsatellite genotyping. Our results indicate low and moderate levels of genetic differentiation among geographically separate populations of MED and MEAM1, respectively. Median-joining network analysis of mtCOI gene haplotypes revealed no clear geographic structuring for either, with common haplotypes observed across provinces, although MED had more haplotypes. Comparative analyses revealed that MED presented greater genetic diversity than MEAM1 on the basis of two markers. Furthermore, analysis of molecular variance supported these findings, suggesting that while some genetic variation exists between populations, a significant amount is also present within populations. These findings reveal the population genetics of the two invasive cryptic species of the B. tabaci complex in China and suggest that the disparities in genetic diversity drive the displacement of their populations in the field. This work also provides valuable information on the genetic factors influencing the population dynamics and dominance of these invasive whitefly species.

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Genetic diversity of cryptic species of Bemisia tabaci in Asia

Cited by 3 publications

References 56 publications

Ecological Factors Associated with the Distribution of Bemisia tabaci Cryptic Species and Their Facultative Endosymbionts

Ecological Factors Associated with the Distribution of Bemisia tabaci Cryptic Species and Their Facultative Endosymbionts

Comparative Genome Analysis of Old World and New World TYLCV Reveals a Biasness toward Highly Variable Amino Acids in Coat Protein

Disparities in Genetic Diversity Drive the Population Displacement of Two Invasive Cryptic Species of the Bemisia tabaci Complex in China

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