Seed Transmission Studies of ‘ Candidatus Liberibacter solanacearum’ in Pepper and its Impact on Plant Emergence

2022 ◽  
Author(s):  
Fekede Workneh ◽  
Li Paetzold ◽  
C. M. Rush
Keyword(s):  
Seed Transmission ◽  
Candidatus Liberibacter Solanacearum ◽  
Candidatus Liberibacter ◽  
Plant Emergence ◽  
Transmission Studies

scholarly journals Seed transmission of ‘Candidatus Liberibacter solanacearum’ is unlikely in carrot

2020 ◽  
Vol 86 (4) ◽  
pp. 266-273
Author(s):  
Takashi Fujikawa ◽  
Kohji Yamamura ◽  
Kohei Osaki ◽  
Nobuya Onozuka ◽  
Mariko Taguchi ◽  
...  
Keyword(s):  
Seed Transmission ◽  
Candidatus Liberibacter Solanacearum ◽  
Candidatus Liberibacter

scholarly journals Lack of Evidence of Vertical Transmission of ‘Candidatus Liberibacter solanacearum’ by Carrot Seeds Suggests That Seed is not a Major Transmission Pathway

Plant Disease ◽  
2017 ◽  
Vol 101 (12) ◽  
pp. 2104-2109 ◽  
Author(s):  
Marianne Loiseau ◽  
Isabelle Renaudin ◽  
Pascaline Cousseau-Suhard ◽  
Pierre-Marie Lucas ◽  
Aurélie Forveille ◽  
...  
Keyword(s):  
Real Time ◽  
Seed Production ◽  
Real Time Pcr ◽  
Seed Transmission ◽  
The Other ◽  
Candidatus Liberibacter Solanacearum ◽  
Carrot Seed ◽  
Candidatus Liberibacter ◽  
Bacterial Transmission ◽  
Growing Conditions

‘Candidatus Liberibacter solanacearum’ is a bacterium associated with several vegetative disorders on solanaceous and apiaceous crops. Following the recent detection of the bacterium in carrots in Europe, and particularly carrot plants used for seed production in France, two independent laboratories conducted experiments on the transmission of this pathogen by seed and had discordant results: one study showed no bacterial transmission to plants, and the other showed transmission to carrot seedlings starting from the fourth month of culture. To test the hypothesis that growing conditions affect seed transmission efficiencies, trials were renewed in 2015 on four lots of 500 carrot seeds naturally contaminated with ‘Ca. L. solanacearum’ and two lots of 100 healthy seeds. The plants were grown for 6 months in an insect-proof NS2 greenhouse. Sets of 108 plants from the contaminated lots and 24 plants from the healthy lots were individually analyzed each month using real-time PCR to detect the bacterium. The detection tests on seeds and plants from healthy lots were always negative. During the 6 months of the trial, no plants from the contaminated seed lots tested positive for the bacterium or showed any infection symptoms. These results indicate that transmission of ‘Ca. L. solanacearum’ by carrot seed is rare and difficult to reproduce.

scholarly journals Growth and Yield Performance of Solanum tuberosum Grown from Seed Potatoes Infected with ‘Candidatus Liberibacter solanacearum’ Haplotypes A and B

Plant Disease ◽  
2020 ◽  
Vol 104 (3) ◽  
pp. 688-693 ◽  
Author(s):  
Kylie D. Swisher Grimm ◽  
Tariq Mustafa ◽  
W. Rodney Cooper ◽  
Joseph E. Munyaneza
Keyword(s):  
Solanum Tuberosum ◽  
Disease Incidence ◽  
The United States ◽  
Growth And Yield ◽  
Candidatus Liberibacter Solanacearum ◽  
Seed Potatoes ◽  
Candidatus Liberibacter ◽  
Daughter Tuber ◽  
Plant Emergence ◽  
Lower Plants

Zebra chip (ZC) disease of potato (Solanum tuberosum) is associated with infection by ‘Candidatus Liberibacter solanacearum’ (Lso). Two haplotypes of Lso—A and B—occur in the United States. Lso haplotype B is more virulent than haplotype A, causing greater disease incidence in tubers, more severe symptoms, and greater loss in tuber yield. This study assessed whether tubers from infected plants generate new infected plants the following year. The effects of both Lso haplotypes A and B on tuber resprout were examined on five potato cultivars. When compared with noninfected tubers, overall plant emergence rate from Lso A- or B-infected tubers was lower, plants emerged slower, and plants generated lower daughter tuber yields in weight and quantity. Plants generally emerged poorly from Lso B-infected tubers and produced lower daughter tuber yields than Lso A-infected tubers. Regardless of Lso treatment, all daughter tubers were asymptomatic, and only 0.3% tested positive for Lso in experiments conducted over 2 years. This suggests that plants generated from Lso A- and Lso B-infected seed potatoes with severe ZC symptoms are likely not a significant source of Lso in potato fields.

Differences in Zebra Chip Severity between ‘Candidatus Liberibacter Solanacearum’ Haplotypes in Texas

2018 ◽  
Vol 96 (1) ◽  
pp. 86-93 ◽  
Author(s):  
Kyle Harrison ◽  
Cecilia Tamborindeguy ◽  
Douglas C. Scheuring ◽  
Azucena Mendoza Herrera ◽  
Adrian Silva ◽  
...  
Keyword(s):  
Zebra Chip ◽  
Candidatus Liberibacter Solanacearum ◽  
Candidatus Liberibacter

scholarly journals Identification of Autophagy-Related Genes in the Potato Psyllid, Bactericera cockerelli and Their Expression Profile in Response to ‘Candidatus Liberibacter Solanacearum’ in the Gut

Insects ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1073
Author(s):  
Xiao-Tian Tang ◽  
Cecilia Tamborindeguy
Keyword(s):  
Expression Profile ◽  
Profile Analysis ◽  
Plant Viruses ◽  
Insect Vectors ◽  
Potato Psyllid ◽  
Bactericera Cockerelli ◽  
Candidatus Liberibacter Solanacearum ◽  
Expression Profile Analysis ◽  
Candidatus Liberibacter

Autophagy, also known as type II programmed cell death, is a cellular mechanism of “self-eating”. Autophagy plays an important role against pathogen infection in numerous organisms. Recently, it has been demonstrated that autophagy can be activated and even manipulated by plant viruses to facilitate their transmission within insect vectors. However, little is known about the role of autophagy in the interactions of insect vectors with plant bacterial pathogens. ‘Candidatus Liberibacter solanacearum’ (Lso) is a phloem-limited Gram-negative bacterium that infects crops worldwide. Two Lso haplotypes, LsoA and LsoB, are transmitted by the potato psyllid, Bactericera cockerelli and cause damaging diseases in solanaceous plants (e.g., zebra chip in potatoes). Both LsoA and LsoB are transmitted by the potato psyllid in a persistent circulative manner: they colonize and replicate within psyllid tissues. Following acquisition, the gut is the first organ Lso encounters and could be a barrier for transmission. In this study, we annotated autophagy-related genes (ATGs) from the potato psyllid transcriptome and evaluated their expression in response to Lso infection at the gut interface. In total, 19 ATGs belonging to 17 different families were identified. The comprehensive expression profile analysis revealed that the majority of the ATGs were regulated in the psyllid gut following the exposure or infection to each Lso haplotype, LsoA and LsoB, suggesting a potential role of autophagy in response to Lso at the psyllid gut interface.

scholarly journals Carrot Pathogen ‘Candidatus Liberibacter solanacearum’ Haplotype C Detected in Symptomless Potato Plants in Finland

2018 ◽  
Vol 61 (1) ◽  
pp. 31-50 ◽  
Author(s):  
Minna Haapalainen ◽  
Satu Latvala ◽  
Marika Rastas ◽  
Jinhui Wang ◽  
Asko Hannukkala ◽  
...  
Keyword(s):  
Candidatus Liberibacter Solanacearum ◽  
Potato Plants ◽  
Candidatus Liberibacter
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