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This is a Quantitative Study study.

September 12, 2025Frontiers in Plant ScienceOpen Access

Genome-wide analysis of Rf-PPR-like genes in Nicotiana tabacum and their potential roles in anther development

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A total of 1002 NtPPR genes were identified in Nicotiana tabacum, with 27 NtRFLs from the P subfamily linked to anther development.
Collinearity analysis showed 15 pairs of NtRFL genes across 9 linkage groups, revealing their uneven distribution in the genome.
Environmental stress and phytohormone response elements were found in the promoter regions of NtRFL genes, indicating their potential regulatory roles.
NtRFL3 was highlighted as a candidate gene due to its higher expression in the fertile line MF1 during early anther development.

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This analysis identifies key PPR genes affecting anther development in Nicotiana tabacum, suggesting targets for fertility restoration in CMS lines.

Wu et al. (2025) studied this question.

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This analysis identifies key PPR genes affecting anther development in Nicotiana tabacum, suggesting targets for fertility restoration in CMS lines.