The genome of whitefly,Bemisia tabaci, an important plant pest and virus vector

2016 ◽  
Author(s):  
Zhangjun Fei
Keyword(s):  
Bemisia Tabaci ◽  
Virus Vector ◽  
Plant Pest

scholarly journals TANAMAN INDIKATOR DAN TEKNIK RAPD-PCR UNTUK PENENTUAN BIOTIPE BEMISIA TABACI GENNADIUS (HEMIPTERA: ALEYRODIDAE)

2011 ◽  
Vol 8 (1) ◽  
pp. 1-7
Author(s):  
Purnama Hidayat ◽  
Noor Aidawati ◽  
Sri Hendrastuti Hidayat ◽  
Dewi Sartiami
Keyword(s):  
Genetic Diversity ◽  
Bemisia Tabaci ◽  
Virus Vector ◽  
Indicator Plant ◽  
Chilli Pepper ◽  
Genetic Types ◽  
Rapd Pcr ◽  
Major Pest ◽  
Biotype B

Indicator Plant and PCR-RAPD for Biotype Determination of Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae).B. tabaci has been known world wide as a major pest and virus vector of horticulture. In Indonesia the presence of B.tabaci was reported since 1980 and its role as virus vector in tomato and chilli pepper has becoming more importantrecently. Genetic diversity of B. tabaci has been well recognized, but very little information available for diversity of B.tabaci in Indonesia. This research was conducted in Bogor, West Java from May 2004 to June 2005. The aim of thisresearch was to initiate basic information regarding genetic diversity of B. tabaci in Indonesia, particularly in Java Island.Whiteflies population collected from different crops, i.e. tomato, broccoli, chill pepper, eggplant, cucumber, soybean, andedamame, was evaluated using silverleaf-induction test, and RAPD-PCR. It was evidenced that only B. tabaci populationfrom broccoli was able to induce silverleaf. Two genetic types of B. tabaci, i.e. biotype B and non B, were identified basedon polymorphism character of DNA. Population from broccoli was belong to biotype B, whereas other populations fromtomato, chill pepper, eggplant, cucumber, soybean, and edamame were belong to biotype non B.

scholarly journals STUDY OF THE USE OF MAIZE AS BARRIER CROP IN CHILI TO CONTROL Bemisia tabaci (Gennadius) POPULATION (STUDI PEMANFAATAN JAGUNG SEBAGAI TANAMAN PEMBATAS UNTUK MENGENDALIKAN POPULASI Bemisia tabaci (Gennadius) PADA TANAMAN CABAI)

2017 ◽  
Vol 20 (2) ◽  
pp. 79
Author(s):  
Yogi Puspo Friarini ◽  
Witjaksono Witjaksono ◽  
Suputa Suputa
Keyword(s):  
Bemisia Tabaci ◽  
Virus Vector ◽  
Yellow Virus ◽  
Cropping Seasons ◽  
Pepper Plants

This study was conducted to determine the effect of maize as barrier crop to prevent the spread of Bemisia tabaci (Gennadius), the yellow virus vector in pepper farming. The research was conducted in the field at Pakem, Sleman, during two cropping seasons from October 2014 to February 2015 as first planting period and in April to August 2015 as second planting period. The escalation of B. tabaci (Gennadius) populations was directly correlated with virus yellow peppers increment. The result indicated that planting barrier was effective in reducing the spread of B. tabaci (Gennadius) in pepper plants. The population of B. tabaci (Gennadius) in plots with pepper surrounded by maize was lower compared to plots without maize barrier, showed that the yellow virus spreads on pepper can be minimized, and hence the incidence of yellow disease was also decreased.Penelitian ini dilakukan untuk mengetahui pengaruh penanaman jagung sebagai pemberian tanaman pembatas (barrier) untuk mengatasi penyebaran Bemisia tabaci (Gennadius) yang merupakan vektor virus kuning pada tanaman cabai. Penelitian dilakukan di lahan pertanaman cabai di Pakem, Sleman. Penelitian dilaksanakan selama dua musim tanam dari bulan Oktober 2014 sampai dengan bulan Februari 2015 pada periode tanam I dan bulan April 2015 sampai dengan bulan Agustus 2015 pada periode tanam II. Meningkatnya populasi B. tabaci (Gennadius) berbanding lurus dengan meningkatnya virus kuning pada cabai. Hasil penelitian ini menunjukkan bahwa penanaman tanaman pembatas (barrier) cukup efektif mengurangi penyebaran B. tabaci (Gennadius) pada ke dalam petak tanaman cabai. Populasi B. tabaci (Gennadius) pada petak tanaman cabai yang dikelilingi tanaman jagung lebih rendah jika dibanding dengan petak tanaman cabai yang tidak dikelililing tanaman jagung, sehingga secara tidak langsung penyebaran virus kuning pada cabai dapat diminimalisir.

Seven species of whitefly new for Gibraltar, including fig whitefly Singhiella simplex (Singh) (Hemiptera: Aleyrodidae)

2021 ◽  
Vol 157 (3) ◽  
pp. 168-172
Author(s):  
Chris Malumphy ◽  
Rhian Guillem
Keyword(s):  
Bemisia Tabaci ◽  
Virus Vector ◽  
Recent Introduction ◽  
The Mediterranean ◽  
Horticultural Pest ◽  
First Time

Seven species of whitefly (Hemiptera: Aleyrodidae) are recorded for the first time from Gibraltar, six of which are non-native introductions. The most notable species are: Bemisia tabaci (Gennadius) complex, which is a major economic agricultural and horticultural pest, and virus vector; and Singhiella simplex (Singh), which is native to S.E. Asia, feeding exclusively on Ficus spp., and a recent introduction to the Mediterranean. Singhiella simplex is also recorded for the first time from Mallorca (Spain) and Morocco.

Virus-Vector Relationship of Bittergourd yellow mosaic virus and the Whitefly Bemisia tabaci Genn.

2005 ◽  
Vol 40 (1-2) ◽  
pp. 23-30 ◽  
Author(s):  
N. Rajinimala ◽  
R. Rabimdran ◽  
A. A. Kamalakannan ◽  
P. Mareeswari
Keyword(s):  
Mosaic Virus ◽  
Bemisia Tabaci ◽  
Virus Vector ◽  
Yellow Mosaic Virus ◽  
Relationship Of

scholarly journals Analyses of symbiotic bacterial communities in the plant pest Bemisia tabaci reveal high prevalence of Hemipteriphilus asiaticus on the African continent

2021 ◽  
Author(s):  
Laurence Mouton ◽  
Helene Henri ◽  
Rahim Romba ◽  
Zainab Belgaidi ◽  
Olivier Gnankine ◽  
...  
Keyword(s):  
Bemisia Tabaci ◽  
Phylogenetic Analyses ◽  
Essential Amino Acids ◽  
Crop Damage ◽  
Fitness Advantage ◽  
Genetic Groups ◽  
Plant Pest ◽  
High Prevalence ◽  
Full Picture ◽  
Microbial Symbionts

Microbial symbionts are widespread in insects and some of them have been associated to adaptive changes. Primary symbionts (P-symbionts) have a nutritional role that allows their hosts to feed on unbalanced diets (plant sap, wood, blood). Most of them have undergone genome reduction, but their genomes still retain genes involved in pathways that are necessary to synthesize the nutrients that their hosts need. However, in some P-symbionts, essential pathways are incomplete and secondary symbionts (S-symbionts) are required to complete parts of their degenerated functions. The P-symbiont of the phloem sap-feeder Bemisia tabaci, Portiera aleyrodidarium, lacks genes involved in the synthesis of vitamins, cofactors, and also of some essential amino-acids. Seven S-symbionts have been detected in the B. tabaci species complex. Phenotypic and genomic analyses have revealed various effects, from reproductive manipulation to fitness benefits, notably some of them have complementary metabolic capabilities to Portiera, suggesting that their presence may be obligatory. In order to get the full picture of the symbiotic community of this pest, we investigated, through metabarcoding approaches, the symbiont content of individuals from Burkina Faso, a West African country where B. tabaci induces severe crop damage. While no new putative B. tabaci S-symbiont was identified, Hemipteriphilus, a symbiont only described in B. tabaci populations from Asia, was detected for the first time on this continent. Phylogenetic analyses however reveal that it is a different strain than the reference found in Asia. Specific diagnostic PCRs showed a high prevalence of these S-symbionts and especially of Hemipteriphilus in different genetic groups. These results suggest that Hemipteriphilus may affect the biology of B. tabaci and provide fitness advantage in some B. tabaci populations.

scholarly journals Exploiting somatic piRNAs in Bemisia tabaci enables novel gene silencing through RNA feeding

2020 ◽  
Vol 3 (10) ◽  
pp. e202000731 ◽  
Author(s):  
Mosharrof Mondal ◽  
Judith K Brown ◽  
Alex Flynt
Keyword(s):  
Gene Silencing ◽  
Bemisia Tabaci ◽  
Pest Species ◽  
Novel Gene ◽  
Rnai Technology ◽  
Plant Pest ◽  
Rna Fragments ◽  
Rna Pathways ◽  
Species Specific ◽  
Target Rna

RNAi promises to reshape pest control by being nontoxic, biodegradable, and species specific. However, due to the plastic nature of RNAi, there is a significant variability in responses. In this study, we investigate small RNA pathways and processing of ingested RNAi trigger molecules in a hemipteran plant pest, the whitefly Bemisia tabaci. Unlike Drosophila, where the paradigm for insect RNAi technology was established, whitefly has abundant somatic piwi-associated RNAs (piRNAs). Long regarded as germline restricted, piRNAs are common in the soma of many invertebrates. We sought to exploit this for a novel gene silencing approach. The main principle of piRNA biogenesis is the recruitment of target RNA fragments into the pathway. As such, we designed synthetic RNAs to possess complementarity to the loci we annotated. Following feeding of these exogenous piRNA triggers knockdown as effective as conventional siRNA-only approaches was observed. These results demonstrate a new approach for RNAi technology that could be applicable to dsRNA-recalcitrant pest species and could be fundamental to realizing insecticidal RNAi against pests.

scholarly journals Transmission of a New Polerovirus Infecting Pepper by the WhiteflyBemisia tabaci

2019 ◽  
Vol 93 (15) ◽  
Author(s):  
Saptarshi Ghosh ◽  
Surapathrudu Kanakala ◽  
Galina Lebedev ◽  
Svetlana Kontsedalov ◽  
David Silverman ◽  
...  
Keyword(s):  
Bemisia Tabaci ◽  
Virus Disease ◽  
Infectious Clone ◽  
High Specificity ◽  
Plant Viruses ◽  
Virus Vector ◽  
Insect Vector ◽  
Content Type ◽  
Pepper Vein Yellows Virus ◽  
Aphid Populations

ABSTRACTMany animal and plant viruses depend on arthropods for their transmission. Virus-vector interactions are highly specific, and only one vector or one of a group of vectors from the same family is able to transmit a given virus. Poleroviruses (Luteoviridae) are phloem-restricted RNA plant viruses that are exclusively transmitted by aphids. Multiple aphid-transmitted polerovirus species commonly infect pepper, causing vein yellowing, leaf rolling, and fruit discoloration. Despite low aphid populations, a recent outbreak with such severe symptoms in many bell pepper farms in Israel led to reinvestigation of the disease and its insect vector. Here we report that this outbreak was caused by a new whitefly (Bemisia tabaci)-transmitted polerovirus, which we named Pepper whitefly-borne vein yellows virus (PeWBVYV). PeWBVYV is highly (>95%) homologous toPepper vein yellows virus(PeVYV) from Israel and Greece on its 5′ end half, while it is homologous toAfrican eggplant yellows virus(AeYV) on its 3′ half. Koch's postulates were proven by constructing a PeWBVYV infectious clone causing the pepper disease, which was in turn transmitted to test pepper plants byB. tabacibut not by aphids. PeWBVYV represents the first report of a whitefly-transmitted polerovirus.IMPORTANCEThe high specificity of virus-vector interactions limits the possibility of a given virus changing vectors. Our report describes a new virus from a family of viruses strictly transmitted by aphids which is now transmitted by whiteflies (Bemisia tabaci) and not by aphids. This report presents the first description of polerovirus transmission by whiteflies. Whiteflies are highly resistant to insecticides and disperse over long distances, carrying virus inoculum. Thus, the report of such unusual polerovirus transmission by a supervector has extensive implications for the epidemiology of the virus disease, with ramifications concerning the international trade of agricultural commodities.

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