Survival and lifespan of Diaphorina citri on non-host plants at various temperatures

Zhang, Ruimin; He, Song; Wu, Wen Lung; Huang, Yongjing; Zhu, Changqing; Xiao, Fang; Liu, Zheyu; Zeng, Jiwu

doi:10.1016/j.cropro.2019.06.001

Cited by 5 publications

(5 citation statements)

References 23 publications

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“…The D. citri had a higher preference for S. nigrum and could survive for a long time on this species, and females survived for longer than males on this weed. Zhang et al 30 reported that the longest survival time of the D. citri on this weed was 41 days, which was similar to our result. Additionally, CLas was detected in the leaves of this weed in the field.…”

Section: Discussionsupporting

confidence: 92%

Adaptability and ‘CandidatusLiberibacter asiaticus’ titres of Diaphorina citri adults on three weed species in China

Fang

et al. 2021

Pest Management Science

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BACKGROUND: Diaphorina citri is a vector of 'Candidatus Liberibacter asiaticus' (CLas), which is associated with citrus huanglongbing (HLB). In this study, the adaptability and CLas titres of D. citri adults on three weed species, namely, Ageratum conyzoides, Solanum nigrum and Praxelis clematidea, which are widely distributed in citrus orchards in China, were determined. RESULTS: D. citri selected S. nigrum preferentially over the other weed species. The longest survival times of D. citri adults on A. conyzoides, S. nigrum and P. clematidea were 48, 41 and 11 days, respectively. On S. nigrum, the survivorship of females was significantly higher than that of males. The CLas titres of D. citri adults feeding on the three weeds for 1 week increased significantly during autumn but did not change significantly during spring. Conversely, the titres of adults on citrus increased significantly during spring but did not change significantly during autumn. CONCLUSION: D. citri exhibited different adaptabilities to the three weed species, but the CLas titres of D. citri adults did not decrease on any of the weeds. These results suggested that the three weed species could help dispersing of D. citri and transmission of CLas while ideal host conditions were scarce or absent.

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Section: Discussionsupporting

confidence: 92%

Adaptability and ‘CandidatusLiberibacter asiaticus’ titres of Diaphorina citri adults on three weed species in China

Fang

et al. 2021

Pest Management Science

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“…L. asiaticus, but it has been recorded as an alternative host for the vector, Diaphorina citri, in Florida (where HLB is now endemic), with evidence that it may also support D. citri reproduction (Thomas and De León, 2011). Use of Ficus by D. citri has not been explored extensively outside of this one study, but several other recent reports document use of various alternative hosts by D. citri adults, likely as a source of water (Zhang et al, 2019;George et al, 2020). These ecological studies of D. citri host use suggest there are pathways for rare Ca.…”

Section: Discussionmentioning

confidence: 86%

“…citri has not been explored extensively outside of this one study, but several other recent reports document use of various alternative hosts by D . citri adults, likely as a source of water ( Zhang et al, 2019 ; George et al, 2020 ). These ecological studies of D .…”

Section: Discussionmentioning

confidence: 99%

Uncovering Symbionts Across the Psyllid Tree of Life and the Discovery of a New Liberibacter Species, “Candidatus” Liberibacter capsica

et al. 2021

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Sap-feeding insects in the order Hemiptera associate with obligate endosymbionts that are required for survival and facultative endosymbionts that can potentially modify resistance to stress, enemies, development, and reproduction. In the superfamily Psylloidea, the jumping plant lice (psyllids), less is known about the diversity and prevalence of their endosymbionts compared to other sap-feeding pests such as aphids (Aphididae). To address this knowledge gap, using 16S rRNA sequencing we identify symbionts across divergent psyllid host lineages from around the world. Taking advantage of a new comprehensive phylogenomic analyses of Psylloidea, we included psyllid samples from 44 species of 35 genera of five families, collected from 11 international locations for this study. Across psyllid lineages, a total of 91 OTUs were recovered, predominantly of the Enterobacteriaceae (68%). The diversity of endosymbionts harbored by each psyllid species was low with an average of approximately 3 OTUs. Two clades of endosymbionts (clade 1 and 2), belonging to Enterobacteriaceae, were identified that appear to be long term endosymbionts of the psyllid families Triozidae and Psyllidae, respectively. We also conducted high throughput metagenomic sequencing on three Ca. Liberibacter infected psyllid species (Russelliana capsici, Trichochermes walkeri, and Macrohomotoma gladiata), initially identified from 16S rRNA sequencing, to obtain more genomic information on these putative Liberibacter plant pathogens. The phylogenomic analyses from these data identified a new Ca. Liberibacter species, Candidatus Liberibacter capsica, that is a potential pathogen of solanaceous crops. This new species shares a distant ancestor with Ca. L. americanus, which occurs in the same range as R. capsici in South America. We also detected the first association between a psyllid specializing on woody hosts and the Liberibacter species Ca. L. psyllaurous, which is a globally distributed pathogen of herbaceous crop hosts in the Solanaceae. Finally, we detected a potential association between a psyllid pest of figs (M. gladiata) and a Ca. Liberibacter related to Ca. L. asiaticus, which causes severe disease in citrus. Our findings reveal a wider diversity of associations between facultative symbionts and psyllids than previously reported and suggest numerous avenues for future work to clarify novel associations of ecological, evolutionary, and pathogenic interest.

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“…Note that the switching system (3) and ( 4) is the special case of the general switching system (8), in which…”

Section: Threshold Dynamicsmentioning

confidence: 99%

“…The current monitoring and control of ACPs and HLB disease is also limited to Rutaceae plants. However, recent research has shown that ACPs can inhabit and feed on non-host plants outside of the Rutaceae family [8]. These non-Rutaceae plants can serve as temporary refuges for ACPs, and create conditions for their long-distance migration and spread, which subsequently affects the accurate monitoring and effective control of ACPs and HLB disease [9].…”

Section: Introductionmentioning

confidence: 99%

Modeling Study of the Effects of Ageratum conyzoides on the Transmission and Control of Citrus Huanglongbing

Wang,

Gao,

Liu

et al. 2023

Plants

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Ageratum conyzoides (A. conyzoides) is commonly found or intentionally planted in citrus orchards due to its ability to provide habitat and breeding grounds for the natural enemies of citrus pests. This study aims to expand from a switching Huanglongbing model by incorporating the effects of A. conyzoides, vector preferences for settling, and pesticide application intervals on disease transmission. Additionally, we establish the basic reproduction number R0 and its calculation for a general switching compartmental epidemic model. Theoretical findings demonstrate that the basic reproduction number serves as a threshold parameter to characterize the dynamics of the models: if R0<1, the disease will disappear, whereas if R0>1, it will spread. Numerical results indicate that the recruitment rate of A. conyzoides not only affects the spread speed of Huanglongbing but also leads to paradoxical effects. Specifically, in cases of high infection rates, a low recruitment rate of A. conyzoides can result in a decrease, rather than an increase, in the basic reproduction number. Conversely, a high recruitment rate can accelerate the spread of Huanglongbing. Furthermore, we show how different vector bias and pesticide spraying periods affect the basic reproduction number.

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Survival and lifespan of Diaphorina citri on non-host plants at various temperatures

Cited by 5 publications

References 23 publications

Adaptability and ‘CandidatusLiberibacter asiaticus’ titres of Diaphorina citri adults on three weed species in China

Adaptability and ‘CandidatusLiberibacter asiaticus’ titres of Diaphorina citri adults on three weed species in China

Uncovering Symbionts Across the Psyllid Tree of Life and the Discovery of a New Liberibacter Species, “Candidatus” Liberibacter capsica

Modeling Study of the Effects of Ageratum conyzoides on the Transmission and Control of Citrus Huanglongbing

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