Machado, Marcos Antonio


Publications
10

Development on Infected Citrus over Generations Increases Vector Infection by ‘Candidatus Liberibacter Asiaticus in Diaphorina citri’

Citation
de Souza Pacheco et al. (2020). Insects 11 (8)
Names
Liberibacter Ca. Liberibacter asiaticus
Abstract
‘Candidatus Liberibacter asiaticus’ (CLas) is a major causal agent of citrus Huanglongbing (HLB), which is transmitted by Asian citrus psyllid (ACP), Diaphorina citri, causing severe losses in various regions of the world. Vector efficiency is higher when acquisition occurs by ACP immature stages and over longer feeding periods. In this context, our goal was to evaluate the progression of CLas population and infection rate over four ACP generations that continuously developed on infected citrus

Physiologic, Anatomic, and Gene Expression Changes in Citrus sunki, Poncirus trifoliata, and Their Hybrids After ‘Candidatus Liberibacter asiaticus’ Infection

Citation
Boava et al. (2017). Phytopathology® 107 (5)
Names
Ca. Liberibacter asiaticus
Abstract
Huanglongbing (HLB) is a destructive disease of citrus caused by phloem-limited bacteria, namely ‘Candidatus Liberibacter asiaticus’ (Las), ‘Candidatus Liberibacter africanus’, and ‘Candidatus Liberibacter americanus’. Although there are no known HLB-resistant citrus species, studies have reported Poncirus trifoliata as being more tolerant. Assuming that callose deposition in the phloem of infected plants can inhibit translocation of photosynthetic products and cause starch accumulation, we com

Seasonal Variation in Populations of ‘Candidatus Liberibacter asiaticus’ in Citrus Trees in Paraná State, Brazil

Citation
Sauer et al. (2015). Plant Disease 99 (8)
Names
Ca. Liberibacter asiaticus
Abstract
Huanglongbing (HLB) is considered one of the most destructive diseases of citrus because the plants rapidly become unproductive, enter a decline, and eventually die. HLB is caused by the phloem-limited bacterium ‘Candidatus Liberibacter’ spp. The objective of this study was to evaluate seasonal variation of the in planta population of ‘Ca. Liberibacter asiaticus’ in the foliage of citrus trees in Brazil using real-time polymerase chain reaction (qPCR). Eleven plants (naturally infected, then sc

Incidence of ‘Candidatus Liberibacter asiaticus’-Infected Plants Among Citrandarins as Rootstock and Scion Under Field Conditions

Citation
Boava et al. (2015). Phytopathology® 105 (4)
Names
Ca. Liberibacter asiaticus
Abstract
Huanglongbing (HLB), caused by the bacterium ‘Candidatus Liberibacter’ spp., is currently one of the most serious diseases of citrus plants and has caused substantial economic losses. Thus far, there is no source of genetic resistance to HLB in the genus Citrus or its relatives. However, several studies have reported Poncirus trifoliata and some of its hybrids to be more tolerant to the disease. The main objective of this study was to report differences in the incidence of ‘Ca. L. asiaticus’ in