Plant Pathology (2021) 70, 1508-1520

Vinicius Henrique Bello, Felipe Barreto da Silva, Luís Fernando Maranho Watanabe, Eduardo Vicentin, Cristiane Muller, Regiane Cristina Oliveira de Freitas Bueno, Jessica Costa Santos, Bruno Rossitto De Marchi, Angélica Maria Nogueira, Valdir Atsushi Yuki, Julio Massaharu Marubayashi, Maria Márcia Pereira Sartori, Marcelo Agenor Pavan, Murad Ghanim and Renate Krause-Sakate (2021)
Detection of Bemisia tabaci Mediterranean cryptic species on soybean in São Paulo and Paraná States (Brazil) and interaction of cowpea mild mottle virus with whiteflies
Plant Pathology 70 (6), 1508-1520
Abstract: Since the detection of Bemisia tabaci Middle East-Asia Minor 1 (MEAM1) species in Brazil in the early 1990s, this whitefly has been the predominant species and the main viral vector in the country. In this work, whiteflies were collected from commercial soybean fields near and far from greenhouses where Mediterranean (MED) species had previously been detected infesting vegetable crops. Results indicated that MEAM1 was the predominant whitefly species in soybean in most sampling sites, while MED was found colonizing soybean plants in open field conditions alone and/or with MEAM1 in several places. Among the tested insects, MED species was mostly detected harbouring the facultative endosymbiont Hamiltonella. We also detected cowpea mild mottle virus (CPMMV) infecting soybean plants. Transmission assays demonstrated that MED species was more efficient transmitting CPMMV from beans to beans and from soybean to soybean plants than MEAM1, while MEAM1 was more efficient in transmitting the virus from soybean to bean than MED. Performance assays indicated that adult emergence of both species on CPMMV-infected soybean plants was higher when compared with the emergence on healthy plants. Moreover, nonviruliferous MED and MEAM1 adults preferred to settle more often on healthy plants, while viruliferous adults settled more often on CPMMV-infected soybean plants. As MED has already been found in soybean open fields in São Paulo and Paraná States, Brazil, and it is a good vector of CPMMV, we anticipate problems related to whitefly management and to increase in the incidence of the virus in soybean.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Murad Ghanim, Renate Krause-Sakate

Research topic(s) for pests/diseases/weeds:
transmission/dispersal of plant diseases

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cowpea mild mottle virus	Soybean (Glycine max)	Brazil (south)
	Bemisia tabaci biotype MED	Soybean (Glycine max)	Brazil (south)