Identification of ‘<i><scp>C</scp>andidatus </i><scp>P</scp>hytoplasma solani’ Associated with Tree Peony Yellows Disease in <scp>C</scp>hina

Gao, Ying; Qiu, Pingping; Liu, Wenhao; Su, Wen-Min; Gai, Shupeng; Liang, Yan; Zhu, Xiaoping

doi:10.1111/jph.12025

Cited by 10 publications

(6 citation statements)

References 11 publications

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“…‘ Ca . P. solani ’ is endemic in Europe and infects a wide range of weeds and cultivated plants reviewed in [68–72]. Our data are consistent with a model in which phytoplasma competes for Fe and perturbs the long-distance signalling of Fe status that is transmitted to the roots.…”

Section: Introductionsupporting

confidence: 86%

‘Candidatus Phytoplasma solani’ interferes with the distribution and uptake of iron in tomato

et al. 2019

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Background ‘Candidatus Phytoplasma solani’ is endemic in Europe and infects a wide range of weeds and cultivated plants. Phytoplasmas are prokaryotic plant pathogens that colonize the sieve elements of their host plant, causing severe alterations in phloem function and impairment of assimilate translocation. Typical symptoms of infected plants include yellowing of leaves or shoots, leaf curling, and general stunting, but the molecular mechanisms underlying most of the reported changes remain largely enigmatic. To infer a possible involvement of Fe in the host-phytoplasma interaction, we investigated the effects of ‘Candidatus Phytoplasma solani’ infection on tomato plants (Solanum lycopersicum cv. Micro-Tom) grown under different Fe regimes. Results Both phytoplasma infection and Fe starvation led to the development of chlorotic leaves and altered thylakoid organization. In infected plants, Fe accumulated in phloem tissue, altering the local distribution of Fe. In infected plants, Fe starvation had additive effects on chlorophyll content and leaf chlorosis, suggesting that the two conditions affected the phenotypic readout via separate routes. To gain insights into the transcriptional response to phytoplasma infection, or Fe deficiency, transcriptome profiling was performed on midrib-enriched leaves. RNA-seq analysis revealed that both stress conditions altered the expression of a large (> 800) subset of common genes involved in photosynthetic light reactions, porphyrin / chlorophyll metabolism, and in flowering control. In Fe-deficient plants, phytoplasma infection perturbed the Fe deficiency response in roots, possibly by interference with the synthesis or transport of a promotive signal transmitted from the leaves to the roots. Conclusions ‘Candidatus Phytoplasma solani’ infection changes the Fe distribution in tomato leaves, affects the photosynthetic machinery and perturbs the orchestration of root-mediated transport processes by compromising shoot-to-root communication.

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Section: Introductionsupporting

confidence: 86%

‘Candidatus Phytoplasma solani’ interferes with the distribution and uptake of iron in tomato

et al. 2019

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“…The symptoms were similar to the symptoms of tree peony yellows disease (Gao et al. ). Phytoplasma‐like bodies were observed in the sieve elements of the phloem tissues of symptomatic camellia (Fig.…”

Section: Resultssupporting

confidence: 75%

“…In 2012, camellia plants with symptoms of yellowing, which was similar to the symptoms of tree peony yellows disease (Gao et al. ), were observed in Tai'an in Shandong province, China. The objective of this study was to confirm that camellia yellows disease is associated with a phytoplasma infection.…”

Section: Introductionmentioning

confidence: 63%

“…The flower buds of C. japonica have been used as an antiinflammatory in Chinese traditional medicine, and also have therapeutic efficacy for hemoptysis, blood stagnation and bleeding due to internal and external injury (Fujimoto et al 2012;Kim et al 2012). In 2012, camellia plants with symptoms of yellowing, which was similar to the symptoms of tree peony yellows disease (Gao et al 2013), were observed in Tai'an in Shandong province, China. The objective of this study was to confirm that camellia yellows disease is associated with a phytoplasma infection.…”

Section: Introductionmentioning

confidence: 99%

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Detection and Identification of an Elm Yellows Group Phytoplasma Associated with Camellia in China

Gao

Dong

Tan

et al. 2014

Journal of Phytopathology

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In 2012, yellowing of camellias was observed in Tai'an in Shandong province, China. Transmission electron microscopy (TEM) revealed phytoplasma in the phloem sieve tube elements of symptomatic plants. A specific fragment of phytoplasma 16S rRNA gene was amplified by polymerase chain reaction (PCR) using the universal phytoplasma primers P1/P7 followed by R16F2n/R16R2. Sequence and restriction fragment length polymorphism (RFLP) analyses allowed us to classify the detected phytoplasma into the elm yellows (EY) group (16SrV), subgroup 16SrV-B. Sequence analyses of the ribosomal protein (rp) gene confirmed a close relationship with phytoplasmas belonging to the rpV-C subgroup. Thus, the phytoplasma associated with yellows disease in camellia, designated as 'CY', is a member of the 16SrV-B subgroup. This is the first report of phytoplasma associated with camellia.

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“…P. phoenicium’-related strain infecting blueberry plants, which previous studies showed to be typically infected by ‘ Ca . P. asteris’ causing blueberry bushy stunt disease (BbSP) (Pérez-López et al 2019; Arocha-Rosete et al 2019; Hammond et al 2021). However, blueberry plants have been reported infected by ‘ Ca .…”

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confidence: 99%

A decade of hidden phytoplasmas unveiled through citizen science

Brochu

Dionne

Fall

et al. 2023

Preprint

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Climate change is impacting agriculture in many ways, and a contribution from all is required to reduce the imminent loses related to it. Recently, it has been showed that citizen science could be a way to trace the impact of climate change. However, how can citizen science be applied in plant pathology? Here, using as an example a decade of phytoplasma-related diseases reported by growers, agronomists, citizens in general, and confirmed by a government laboratory, we explore a new way of valuing plant pathogens monitoring data deriving from land-users or stakeholders. Through this collaboration we found that in the last decade thirty-four hosts have been affected by phytoplasmas, nine, thirteen and five of these plants were, for the first time, reported phytoplasma hosts in Eastern Canada, in Canada and worldwide, respectively. Another finding of great impact is the first report of a ′Ca. P. phoenicium′-related strain in Canada, while ′Ca. P. pruni′ and ′Ca. P. pyri′ was reported for the first time in Eastern Canada. These findings will have a great impact in the management of phytoplasmas and their insect vectors. Using these insect-vectored bacterial pathogens, we show the needs of new strategies that allow a fast and accurate communication between concerned citizens and those institutions confirming their observations.

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Identification of ‘Candidatus Phytoplasma solani’ Associated with Tree Peony Yellows Disease in China

Cited by 10 publications

References 11 publications

‘Candidatus Phytoplasma solani’ interferes with the distribution and uptake of iron in tomato

‘Candidatus Phytoplasma solani’ interferes with the distribution and uptake of iron in tomato

Detection and Identification of an Elm Yellows Group Phytoplasma Associated with Camellia in China

A decade of hidden phytoplasmas unveiled through citizen science

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