Journal
JOURNAL OF PLANT PATHOLOGY
Volume -, Issue -, Pages -Publisher
SPRINGER
DOI: 10.1007/s42161-023-01514
Keywords
Biotic stress; Mobile genetic elements; Model organism; Pathogenicity effector; Plant pathogen
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This study aimed to investigate the effect of leaf blight bacteria on the movement of retrotransposons in different rice cultivars. The activation order of retrotransposons was observed as Osr30 > Nikita = RIRE1. The study also found polymorphism in the Ronaldo and Cameo cultivars. Sequencing and alignment with the rice genome revealed homology to Oryza sativa chromosome 12. This is the first report detailing barley- and rice-specific retrotransposons in pathogen-infected rice cultivars.
Changing environmental conditions can cause diseases in plants, leading to novel interactions between plants and stress factors. In this respect, the relationships between pathogens and plants regarding epigenetics have still been investigated. Our aim is to examine the effect of leaf blight bacterial causal agent, Pantoea ananatis isolate PaTo34a1, on barley- and rice-specific retrotransposons' (Nikita, Osr30 and RIRE1, respectively) movements in different rice cultivars (Oryza sativa L. cv. Tosya, Cameo, Arize, Ronaldo, Osmancik-97, Kale, Baldo, Bafra, Hakkari and Vasco) collected from different localities in Turkey. The activation order of retrotransposons was observed as Osr30 > Nikita = RIRE1. Osr30 shows polymorphism in Ronaldo and Cameo cultivars when compared to the control. After, amplified Ranoldo and Cameo fragments were sequenced and aligned with rice genome. The result showed that sequence was homologous to Oryza sativa chromosome 12. It is worth noting that this is the first report detailing barley- and rice-specific LTR retrotransposons in pathogen-infected rice cultivars. Hence, it may offer better insights into the retrotransposon movements of a P. ananatis in rice.
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