Assessing the diversity of whiteflies infesting cassava in Brazil.

Background. The necessity of a competent vector for transmission is a primary ecological factor driving the host range expansion of plant arthropod-borne viruses, with vectors playing an essential role in disease emergence. Cassava begomoviruses severely constrain cassava production in Africa. Curiously, begomoviruses have never been reported in cassava in South America, the center of origin for this crop. It has been hypothesized that the absence of a competent vector in cassava is the reason why begomoviruses have not emerged in South America. Methods. We performed a country-wide whitefly diversity study in cassava in Brazil. Adults and/or nymphs of whiteflies were collected from sixty-six cassava fields in the main agroecological zones of the country. A total of 1,385 individuals were genotyped based on mitochondrial cytochrome oxidase I sequences. Results. A high species richness was observed, with five previously described species and two putative new ones. The prevalent species were Tetraleurodes acaciae and Bemisia tuberculata, representing over 75% of the analyzed individuals. Although we detected, for the first time, the presence of Bemisia tabaci Middle East-Asia Minor 1 (BtMEAM1) colonizing cassava in Brazil, it was not prevalent. The species composition varied across regions, with fields in the Northeast region showing a higher diversity. These results expand our knowledge of whitefly diversity in cassava and support the hypothesis that begomovirus epidemics have not occurred in cassava in Brazil due to the absence of competent vector populations. However, they indicate an ongoing adaptation process of BtMEAM1 to cassava, increasing the likelihood of begomovirus emergence in this crop

Bibliographic Details

Main Authors:	XAVIER, C. A. D., NOGUEIRA, A. M., BELLO, V. H., WATANABE, L. F. M., BARBOSA, T. M. C., ALVES JÚNIOR, M., BARBOSA, L., BESERRA-JÚNIOR, J. E. A., BOARI, A. de J., CALEGARIO, R., GORAYEB, E. S., HONORATO JÚNIOR, J., KOCH, G., LIMA, G. S. de A., LOPES, C., MELLO, R. N. de, PANTOJA, K., SILVA, F. N., RAMOS SOBRINHO, R., SANTANA, E. N., SILVA, J. W. P. da, KRAUSE-SAKATE, R., ZERBINI, F. M.
Other Authors:	CESAR A. D. XAVIER, UFV; ANGÉLICA MARIA NOGUEIRA, UFV; VINICIUS HENRIQUE BELLO, UNESP; LUÍS FERNANDO MARANHO WATANABE, UNESP; TARSIANE MARA CARNEIRO BARBOSA, UFV; MIGUEL ALVES JÚNIOR, UNIVERSIDADE FEDERAL DO PARÁ; LEONARDO BARBOSA, INSTITUTO FEDERAL DO SUDESTE DE MINAS GERAIS; JOSÉ E. A. BESERRA-JÚNIOR, UNIVERSIDADE FEDERAL DO PIAUÍ; ALESSANDRA DE JESUS BOARI, CPATU; RENATA CALEGARIO, UNIVERSIDADE FEDERAL DO PARANÁ; EDUARDO SILVA GORAYEB, UNIVERSIDADE DO ESTADO DE SANTA CATARINA; JAIME HONORATO JÚNIOR, UNIVERSIDADE FEDERAL DO OESTE DA BAHIA; GABRIEL KOCH, UNIVERSIDADE FEDERAL DO PARANÁ; GAUS SILVESTRE DE ANDRADE LIMA, UNIVERSIDADE FEDERAL DE ALAGOAS; CRISTIAN LOPES, INSTITUTO FEDERAL DO SUDESTE DE MINAS GERAIS; RAQUEL NEVES DE MELLO, CNPAF; KÉSSIA PANTOJA; FÁBIO NASCIMENTO SILVA, UNIVERSIDADE DO ESTADO DE SANTA CATARINA; ROBERTO RAMOS SOBRINHO, UNIVERSIDADE FEDERAL DE ALAGOAS; ENILTON NASCIMENTO SANTANA, INSTITUTO CAPIXABA DE PESQUISA E EXTENSÃO RURAL; JOSÉ WILSON PEREIRA DA SILVA, UNIVERSIDADE FEDERAL DO PARÁ; RENATE KRAUSE-SAKATE, UNESP; FRANCISCO M. ZERBINI, UFV.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2023-11-28
Subjects:	Geminivirus, Virus vector, Mandioca, Manihot Esculenta, Vírus, Doença de Planta, Cassava, Plant diseases and disorders,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1158825 http://doi.org/10.7717/peerj.11741
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