'Candidatus Phytoplasma sacchari', a novel taxon - associated with Sugarcane Grassy Shoot (SCGS) disease.

@article{Kirdat2020CandidatusPS,
  title={'Candidatus Phytoplasma sacchari', a novel taxon - associated with Sugarcane Grassy Shoot (SCGS) disease.},
  author={Kiran Kirdat and Bhavesh Tiwarekar and Vipool Thorat and Shivaji J. Sathe and Yogesh S. Shouche and Amita Yadav},
  journal={International journal of systematic and evolutionary microbiology},
  year={2020}
}
Sugarcane Grassy Shoot (SCGS) disease is known to be related to Rice Yellow Dwarf (RYD) phytoplasmas (16SrXI-B group) which are found predominantly in sugarcane growing areas of the Indian subcontinent and South-East Asia. The 16S rRNA gene sequences of SCGS phytoplasma strains belonging to the 16SrXI-B group share 98.07 % similarity with 'Ca. Phytoplasma cynodontis' strain BGWL-C1 followed by 97.65 % similarity with 'Ca. P. oryzae' strain RYD-J. Being placed distinctly away from both the… 
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References

SHOWING 1-10 OF 62 REFERENCES
New subgroup 16SrXI-F phytoplasma strain associated with sugarcane grassy shoot (SCGS) disease in India.
TLDR
The 16S rRNA gene-based phylogenetic analysis of reported RYD and BGWL group phy toplasmas showed that they are a genetically diverse group of phytoplasmas.
'Candidatus Phytoplasma cirsii', a novel taxon from creeping thistle [Cirsium arvense (L.) Scop].
TLDR
It could be concluded that the studied phytoplasma strains represent a discrete group that is proposed as a novel taxon 'Candidatus Phy toplasma cirsii', with strain CirYS as a reference strain.
"Candidatus Phytoplasma oryzae", a novel phytoplasma taxon associated with rice yellow dwarf disease.
In addition to rice yellow dwarf (RYD) phytoplasma, several phytoplasmas infect gramineous plants, including rice orange leaf, bermuda grass white leaf, brachiaria grass white leaf and sugarcane
Phylogenetic analysis identifies a 'Candidatus Phytoplasma oryzae'-related strain associated with yellow leaf disease of areca palm (Areca catechu L.) in India.
TLDR
The 16S rRNA and secA gene sequences of the Indian arecanut YLD phytoplasma are characterized for 'Candidatus Phy toplasma' species assignment and 16Sr group/subgroup classification and the phy Toplasma is named, to differentiate it from the Hainan YLDphytop lasma, which belongs to group 16SRI.
'Candidatus Phytoplasma cynodontis', the phytoplasma associated with Bermuda grass white leaf disease.
TLDR
It can be concluded that the BGWL phytoplasma is a discrete taxon at the putative species level, for which the name 'Candidatus Phy toplasma cynodontis' is proposed.
Detection of sugarcane grassy shoot phytoplasma infecting sugarcane in India and its phylogenetic relationships to closely related phytoplasmas
TLDR
The extensive survey of phytoplasmal infections in sugarcane plants in India as well as analysis of phylogenetic relationships of SCGSphytoplasma strains to each other and to other closely related phy toplasmas, had previously not been known.
Genetic Diversity of Sugarcane Grassy Shoot (SCGS)-Phytoplasmas Causing Grassy Shoot Disease in India
TLDR
Results proved that the phytoplasma isolates infecting sugarcane in India with phenotypic variations from different regions have similar ITS region and further studies are needed to locate other genes in phy toplasma genome which determine variations in phenotypesic expression in the SCGS disease.
New Efficient Natural Leafhopper Vectors of Sugarcane Grassy Shoot Phytoplasma in India
TLDR
The identification of new vectors of SCGS phytoplasma suggested that these leafhopper species may be responsible for secondary spread of SC GS phy toplasma.
Molecular and Symptom Analysis Reveal the Presence of New Phytoplasmas Associated with Sugarcane Grassy Shoot Disease in India.
TLDR
Two phytoplasmas may be previously unreported ones that cause significant yield losses in sugarcane in India, and two of them, namely BV2 and VD7, shared relatively low sequence similarity.
'Candidatus Phytoplasma', a taxon for the wall-less, non-helical prokaryotes that colonize plant phloem and insects.
The trivial name 'phytoplasma' has been adopted to collectively name wall-less, non-helical prokaryotes that colonize plant phloem and insects, which were formerly known as mycoplasma-like organisms.
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