scholarly journals Host range of Bemisia tabaci Q-biotype

2009 ◽  
Vol 51 ◽  
pp. 75-77 ◽  
Author(s):  
Hiroyuki Iida ◽  
Toshio Kitamura ◽  
Ken-ichiro Honda ◽  
Yasuhiro Mizusawa ◽  
Shigeru Kamata ◽  
...  
Keyword(s):  
Host Range ◽  
Bemisia Tabaci ◽  
Q Biotype

A new silverleaf-inducing biotype Ms of Bemisia tabaci (Hemiptera: Aleyrodidae) indigenous to the islands of the south-west Indian Ocean

2005 ◽  
Vol 95 (1) ◽  
pp. 29-35 ◽  
Author(s):  
H. Delatte ◽  
B. Reynaud ◽  
M. Granier ◽  
L. Thornary ◽  
J.M. Lett ◽  
...  
Keyword(s):  
Bemisia Tabaci ◽  
Distinct Group ◽  
Genetic Type ◽  
Coi Gene ◽  
Vegetable Crops ◽  
Sequence Comparisons ◽  
Genetic Types ◽  
South West Indian Ocean ◽  
Biotype B ◽  
Q Biotype

AbstractFollowing the first detection of tomato yellow leaf curl virus (TYLCV) from R=union (700 km east of Madagascar) in 1997 and the upsurge of Bemisia tabaci (Gennadius) on vegetable crops, two genetic types of B. tabaci were distinguished using RAPD–PCR and cytochrome oxidase I (COI) gene sequence comparisons. One type was assigned to biotype B and the other was genetically dissimilar to the populations described elsewhere and was named Ms, after the Mascarenes Archipelago. This new genetic type forms a distinct group that is sister to two other groups, one to which the B biotype is a member and one to which the Q biotype belongs. The Ms biotype is thought to be indigenous to the region as it was also detected in Mauritius, the Seychelles and Madagascar. Both B and Ms populations of B. tabaci induced silverleaf symptoms on Cucurbita sp., and were able to acquire and transmit TYLCV. Taken together these results indicate that the Ms genetic type should be considered a new biotype of B. tabaci.

Host Range Studies for Tomato chlorosis virus, and Cucumber vein yellowing virus Transmitted by Bemisia  tabaci (Gennadius)

2006 ◽  
Vol 114 (3) ◽  
pp. 265-273 ◽  
Author(s):  
Jane Morris ◽  
Elspeth Steel ◽  
Penny Smith ◽  
Neil Boonham ◽  
Nicola Spence ◽  
...  
Keyword(s):  
Host Range ◽  
Bemisia Tabaci ◽  
Tomato Chlorosis Virus ◽  
Yellowing Virus

scholarly journals Effect of common pesticides on Q-biotype Bemisia tabaci (Gennadius) collected from three major tomato-growing districts in Aichi Prefecture

2018 ◽  
Vol 60 (0) ◽  
pp. 117-120
Author(s):  
Hiroshi Ishikawa ◽  
Kyoko Suzuki ◽  
Tooru Ohno ◽  
Norikuni Saka
Keyword(s):  
Bemisia Tabaci ◽  
Aichi Prefecture ◽  
Q Biotype

Distribution and dynamics of Bemisia tabaci invasive biotypes in central China

2010 ◽  
Vol 101 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Q. Rao ◽  
C. Luo ◽  
H. Zhang ◽  
X. Guo ◽  
G.J. Devine
Keyword(s):  
Bemisia Tabaci ◽  
Hubei Province ◽  
Central China ◽  
Agricultural Systems ◽  
Tobacco Whitefly ◽  
Broad Spectrum Resistance ◽  
Rapd Pcr ◽  
Comprehensive Survey ◽  
Q Biotype ◽  
Mitochondrial Cytochrome Oxidase

AbstractThe tobacco whitefly, Bemisia tabaci (Gennadius), causes severe crop losses in many agricultural systems. The worst of these losses are often associated with the invasion and establishment of specific whitefly biotypes. In a comprehensive survey of biotypes present in central China between 2005 and 2007, we obtained 191 samples of B. tabaci from 19 districts in Hubei province and its surrounds. Biotypes were identified by RAPD-PCR and by sequencing the mitochondrial cytochrome oxidase I gene (mtCO1). We determined that these central Chinese haplotypes included the world's two most invasive B. tabaci biotypes (B and Q) and two indigenous biotypes (ZHJ1 and ZHJ3). The B biotype shared >99.7% identity with other Chinese B biotypes and the Q biotype shared >99.5% of its identity with Q samples from the Mediterranean, USA, Africa and East Asia. By 2007, the Q biotype was dominant over much of Hubei province and appeared to be supplanting all other biotypes, although both the invasive and indigenous biotypes existed in sympatry in some regions. The invasion and rapid establishment of the Q biotype in China mirrors events elsewhere in the world, and we suggest that this is a consequence of its reproductive isolation, its polyphagous nature and its broad-spectrum resistance to insecticides. Its dominance has severe implications for the sustainability of some insecticide groups and for the production of a number of crops.

scholarly journals Modelling temperature-dependent bionomics of Bemisia tabaci (Q-biotype)

2007 ◽  
Vol 32 (1) ◽  
pp. 50-55 ◽  
Author(s):  
OLIVIER BONATO ◽  
AMANDINE LURETTE ◽  
CLAIRE VIDAL ◽  
JACQUES FARGUES
Keyword(s):  
Bemisia Tabaci ◽  
Temperature Dependent ◽  
Q Biotype

scholarly journals KISARAN INANG DAN DINAMIKA POPULASI Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) DI PERTANAMAN CABAI MERAH

2011 ◽  
Vol 11 (1) ◽  
pp. 47-56
Author(s):  
Hendrival Hendrival ◽  
Purnama Hidayat ◽  
Ali Nurmansyah
Keyword(s):  
Host Range ◽  
Host Plant ◽  
Plant Species ◽  
Bemisia Tabaci ◽  
Population Dynamic ◽  
Natural Enemy ◽  
Host Plants ◽  
Chili Pepper ◽  
Plant Families ◽  
Abundant Population

The study of host range and population dynamic of B. tabaci in red chili pepper fiel dswas conducted in Sub-district of Pakem, District of Sleman, Province of Daerah Istimewa Yogyakarta during dry season of May-October 2009. The study of host plants of B. tabaci from the red chili pepper fields revealed that there were 27 species of host plants belong to 22 genera of 13 families including crops and weeds. The host plants belong to families of Araceae, Amaranthaceae, Asteraceae, Brassicaceae, Capparidaceae, Convolvulaceae, Euphorbiaceae, Lamiaceae, Oxalidaceae, Papilionaceae, Rubiaceae, Solanaceae and Sterculiaceae. The host plant families of Asteraceae and Euphorbiaceae had the most abundant population of B. tabaci. Geminivirus-like symptoms were found in the weeds of A. conyzoides and A. boehmerioides. Population of B. tabaci adults correlated with abundance of host plant species found in the red chili pepper fields. The population of B. tabaci in red chili pepper fields was affected by natural enemy population. Population dynamic of the parasitoid Eretmocerus sp. correlated with population dynamic of the parasitized nymph of B. tabaci. Parasitoid Eretmocerus sp. was potentially good in controlling population of B. tabaci nymph in red chili pepper fields.

scholarly journals Effects of Lecanicillium lecanii strain JMC-01 on the physiology, biochemistry, and mortality of Bemisia tabaci Q-biotype nymphs

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7690 ◽  
Author(s):  
Ting Xie ◽  
Ling Jiang ◽  
Jianshe Li ◽  
Bo Hong ◽  
Xinpu Wang ◽  
...  
Keyword(s):  
Bemisia Tabaci ◽  
Control Level ◽  
Agricultural Pests ◽  
Weight Changes ◽  
Glutathione S Transferase ◽  
Lecanicillium Lecanii ◽  
Protective Enzyme ◽  
Protective Enzymes ◽  
Q Biotype ◽  
Control Resource

Background Lecanicillium lecanii is an entomopathogenic fungi, which was isolated from insects suffering from disease. Now, it is an effective bio-control resource that can control agricultural pests such as whitefly and aphids. There are many studies on the control of various agricultural pests by L. lecanii, but no report on its control of Bemisia tabaci biotype-Q exists. In this work, we studied the susceptibility of B. tabaci Q-biotype (from Ningxia, China) to L. lecanii JMC-01 in terms of nymph mortality and the changes in detoxifying protective enzymes activities. Methods B. tabaci nymphs were exposed to L. lecanii JMC-01 conidia by immersion with the host culture. Mortality was assessed daily for all nymph stages. The detoxifying and protective enzyme activity changes, weight changes, and fat, and water contents of the nymphs were determined spectrophotometrically. Results All instars of B. tabaci died after being infested with 1 × 108 conidia/mL. The 2nd-instar nymphs were the most susceptible, followed by the 3rd-instar nymphs. The corrected cumulative mortality of the 2nd- and 3rd-instar nymphs was 82.22% and 75.55%, respectively. The levels of detoxifying and protective enzymes initially increased and then decreased. The highest activities of carboxylesterase, acetylcholinesterase, peroxidase, and catalase occurred on the 3rd day, reaching 10.5, 0.32, 20, and 6.3 U/mg prot, respectively. These levels were 2.2-, 4.3-, 2.4-, and 1.4-fold the control levels, respectively. The highest activities of glutathione-S transferase and superoxide dismutase on the 2nd day were, respectively, 64 and 43.5 U/mg prot. These levels were, respectively, 2.7 and 1.1-fold that of the control level. The water and fat content in the infected B. tabaci nymphs decreased and differed significantly from the control levels. The weight increased continuously in the first 24 h, decreasing thereafter. At 72 h, the infestation level was about 0.78-fold that of the control level. Conclusions The studied L. lecanii JMC-01 strain is pathogenic to the B. tabaci Q-biotype. This strain interferes with the normal functioning of detoxifying and protective enzymes, and is also involved in the disruption of normal physiological metabolism in B. tabaci.

scholarly journals Tomato torrado virus is Transmitted by Bemisia tabaci and Infects Pepper and Eggplant in Addition to Tomato

Plant Disease ◽  
2008 ◽  
Vol 92 (7) ◽  
pp. 1139-1139 ◽  
Author(s):  
K. Amari ◽  
D. Gonzalez-Ibeas ◽  
P. Gómez ◽  
R. N. Sempere ◽  
M. A. Sanchez-Pina ◽  
...  
Keyword(s):  
Host Range ◽  
Bemisia Tabaci ◽  
Chenopodium Quinoa ◽  
Trialeurodes Vaporariorum ◽  
Virus Genome ◽  
Molecular Hybridization ◽  
Cdna Libraries ◽  
Economic Losses ◽  
Tomato Plants ◽  
Tomato Seedlings

Torrao or torrado is an emerging disease that is causing serious economic losses in tomato crops of southeastern Spain. The causal agent has been shown to be a new picorna-like plant virus, tentatively named Tomato torrado virus (ToTV) (4). By using trap tomato plants in a greenhouse affected by torrado located in the Murcia Region of Spain, we obtained a ToTV isolate (ToTV-CE) that we have biologically and molecularly characterized. Subtracted cDNA libraries (1) and expressed sequence tags sequencing were used to determine the partial nucleotide sequence of ToTV-CE. We covered ≈53% of the virus genome (GenBank Accession Nos. EU476181 and EU476182) and found that ToTV-CE RNAs 1 and 2 had a high nucleotide similarity (98 and 99%, respectively) with the ToTV published sequences (2,4). ToTV-CE sequences also showed a 70% nt similarity with those of Tomato apex necrosis virus, a newly identified virus in tomato crops of the Culiacan area (Sinaloa, Mexico) (3). To characterize the host range of ToTV-CE, 6 to 10 plants belonging to 14 species were mechanically inoculated with extracts from ToTV-CE-infected Nicotiana benthamiana plants. The presence of ToTV in these plants was analyzed at 3 and 6 weeks postinoculation (PI) by molecular hybridization in dot-blots. The determined host range was in agreement with that described earlier (2,4), but additional hosts and nonhosts were identified. Thus, the virus did not infect melon (Cucumis melo var. cantaloupe), cucumber (C. sativus cv. Marketmore), squash (Cucurbita pepo cv. Negro Belleza), Chenopodium album ssp. Amaranticolor, or Chenopodium quinoa. The virus infected systemically N. benthamiana, N. glutinosa, N. rustica, tobacco (N. tabacum cvs. Xanthi nc and Samsun), Physalis floridana, pepper (Capsicum annuum cv. Italian Long Sweet), tomato (Solanum lycopersicum cv. Boludo), and eggplant (S. melongena cv. Black Beauty). Pepper plants displayed severe symptoms of infection consisting of marked mosaics and stunting (but no necrosis), but eggplant remained asymptomatic for up to 6 weeks PI. A simple assay was devised to analyze whether ToTV can be transmitted by whiteflies. ToTV-CE-infected tomato plants were placed together with three to eight healthy tomato seedlings inside insect-proof glass boxes. Adult Bemisia tabaci (100 to 800 individuals in three replicates) or Trialeurodes vaporariorum (100 individuals in one replicate) were released into each box. For both treatments, symptoms typically induced by ToTV appeared in one to seven tomato seedlings by 1 week after the release of the whiteflies. ToTV infection was confirmed by molecular hybridization in tissue prints of petiole cross sections at 10 days PI. These data are in agreement with those reported by Pospieszny et al. (2) and strongly suggest that both B. tabaci and T. vaporariorum can transmit ToTV. References: (1) L. Diachenko et al. Proc. Natl. Acad. Sci. USA 93:6025, 1996. (2) H. Pospieszny et al. Plant Dis. 91:1364, 2007 (3) M. Turina et al. Plant Dis. 91:932, 2007. (4) M. Verbeek et al. Arch. Virol. 152:881, 2007.

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