Identification of phytoplasmas in mango and pomegranate fruits in Guadeloupe

Castañeda-Alvarez, Carlos; Contaldo, Nicoletta; Satta, Eleonora; Uneau, Youri; Bertaccini, Assunta

doi:10.5958/2249-4677.2018.00011.7

Cited by 4 publications

(2 citation statements)

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“…In Guadeloupe (Carribean area), pomegranate little leaf, yellows and dried branch were associated with ‘ Ca . P. asteris’, subgroups 16SrI‐B and ‐F (Castañeda‐Alvarez et al, 2018). Nevertheless, the presence of pomegranate symptoms associated with ‘ Ca .…”

Section: Discussionmentioning

confidence: 99%

Identification of four distinct ‘Candidatus Phytoplasma’ species in pomegranate trees showing witches' broom, little leaf and yellowing in Jordan, and preliminary insights on their putative insect vectors and reservoir plants

Alloush

Bianco

Amashah

et al. 2022

Annals of Applied Biology

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During field surveys conducted in northern Jordan from June to November 2020, phytoplasma‐like symptoms, including leaf yellowing/reddening and rolling, little leaf and witches' broom were observed in pomegranate. Disease incidence in 22 surveyed orchards ranged from 30% to 65%. Nested PCR‐based amplification of 16S rRNA gene detected phytoplasmas in 17% of collected symptomatic pomegranate trees. Amplicon nucleotide sequence analyses allowed attributing the detected phytoplasmas to ‘Candidatus Phytoplasma solani’, ‘Ca. P. aurantifolia’, ‘Ca. P. asteris’ and ‘Ca. P. ulmi’. These phytoplasmas were found in plants showing specific symptoms and differentially distributed in the considered locations. Additionally, three cicadellids (Macrosteles sexnotatus, Cicadulina bipunctata and Psammotettix striatus) and two non‐crop plants (Plantago major and Capsicum annuum) resulted hosting ‘Ca. P. asteris’ strains, and one cicadellid (Balclutha incisa) was carrying a ‘Ca. P. solani’ strain. A new pomegranate disease complex associated with multiple phytoplasmas, including ‘Ca. P. aurantifolia’ and ‘Ca. P. ulmi’, never reported before in this host plant, is described here. Moreover, preliminary indications are provided on its possible epidemiology in Jordan, involving two putative insect vectors (M. sexnotatus, B. incisa) first reported in the Country.

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Section: Discussionmentioning

confidence: 99%

Identification of four distinct ‘Candidatus Phytoplasma’ species in pomegranate trees showing witches' broom, little leaf and yellowing in Jordan, and preliminary insights on their putative insect vectors and reservoir plants

Alloush

Bianco

Amashah

et al. 2022

Annals of Applied Biology

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“…Historically, MMD etiology has been associated with mites, fungal pathogens, viruses, as well as physiological and nutritional disorders (Kumar et al 1993). Recently, some authors reported the association of phytoplasmas with the MMD (El-Banna and El-Deeb 2001; Kazmi et al 2007;Fahmeed et al 2009;Castañeda-Alvarez et al 2018;Kirdat et al 2019;Rao et al 2020). In many hosts, these obligate prokaryotes (Mollicutes: Acholeplasmatales) induce some symptoms similar to those found in the MMD syndrome such as proliferation, virescence, phyllody, and little leaves.…”

Section: Introductionmentioning

confidence: 99%

Mango malformation: etiology, symptoms, distribution and cultivar susceptibility in the Dominican Republic

García-López¹,

Batista-Marte

Serra

et al. 2023

Can. J. Plant Sci.

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Mango malformation disease (MMD) caused by Fusarium species has become an important disease of mango ( Mangifera indica L.) orchards worldwide. In the Dominican Republic, MMD was first observed in 2008 in orchards of Azua and Peravia provinces, with incidence of up to 50%. This study aimed to estimate the malformation prevalence and distribution in the main mango growing areas of the Dominican Republic and to assess the susceptibility of six commercial cultivars commonly grown in this country. Mango malformation was found in 18 out of 58 orchards, all located in Peravia and Azua. Peravia showed the highest incidence, with values of up to 75% (2013) and 87.5% (2014), and the interpolative analysis made with ArcGIS showed this province as being more inductive for Fusarium spp. occurrence. Pathogenicity tests were conducted in 2013 and 2014 on 10-month-old healthy mango plants per cultivar. Inoculation was done by infiltration of Fusarium pseudocircinatum and Fusarium decemcellulare conidial suspensions into the vegetative apical buds, singly and in combination. In inoculated plants, symptoms such as loss of apical dominance, excessive proliferation of apical or axillary buds with thickened stems, and reduction of leaf lamina were associated with F. pseudocircinatum. In addition to these symptoms, leathery protuberant buds and eventual death of infiltrated plants were associated with F. decemcellulare, singly or coinoculated with F. pseudocircinatum. Based on a disease severity index (DSI), “Tommy Atkins” was tolerant (DSI = 7.8%) and “Puntica” and “Banilejo” were highly susceptible (DSI = 22% and 28.5%).

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Identification of ‘Candidatus Phytoplasma’ species in “huanglongbing” infected citrus orchards in the Caribbean

et al. 2021

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Abstract“Huanglongbing” (HLB) is one of the most devastating diseases of citrus orchards worldwide. Samples from 183 citrus plants of different cultivars and rootstock/cultivar combinations, showing HLB symptoms in three Caribbean countries (Cuba, Jamaica, and Guadeloupe-France), were collected to verify the possible co-infection of ‘Candidatus Phytoplasma’ and ‘Candidatus Liberibacter’ species. The 64% of the samples resulted positive to the ‘Ca. L. asiaticus’ and the 27% to diverse ‘Ca. Phytoplasma’-related species, moreover about the 14% of the samples infected with ‘Ca. Liberibacter’ were also found positive to phytoplasmas, indicating the presence of mixed infection especially in the orchards located in Cuba. Moreover, in one of the samples from Jamaica mixed phytoplasma infection was detected. Moreover the detection of only phytoplasmas in 11 symptomatic citrus samples collected from Cuba and Guadeloupe without ‘Ca. Liberibacter’ detection, confirmed that the symptomatology cannot be the sole criterium to discriminate between the presence of the two pathogens, and molecular detection is necessary to identify single or mixed infections. Diaphorina citri insects collected from Cuba and Guadeloupe resulted infected with ‘Ca. L. asiaticus’ confirming its active role in the dissemination of the pathogen. Only one insect of the Cicadidae family, collected in Guadeloupe, was found positive for phytoplasma presence. Considering that the phytoplasmas belonging to some ‘Candidatus species’ were detected in the three countries in different citrus varieties, a relevant role as phytoplasma reservoir can be attribute to citrus orchards.

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Identification of phytoplasmas in mango and pomegranate fruits in Guadeloupe

Cited by 4 publications

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Identification of four distinct ‘Candidatus Phytoplasma’ species in pomegranate trees showing witches' broom, little leaf and yellowing in Jordan, and preliminary insights on their putative insect vectors and reservoir plants

Identification of four distinct ‘Candidatus Phytoplasma’ species in pomegranate trees showing witches' broom, little leaf and yellowing in Jordan, and preliminary insights on their putative insect vectors and reservoir plants

Mango malformation: etiology, symptoms, distribution and cultivar susceptibility in the Dominican Republic

Identification of ‘Candidatus Phytoplasma’ species in “huanglongbing” infected citrus orchards in the Caribbean

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