ArticleGigaScience2025
A telomere-to-telomere gapless genome reveals SlPRR1 control of circadian rhythm and photoperiodic flowering in tomato.
Article in GigaScience, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- A near-complete genome assembly of onion resolves its genomic architecture, origin, and evolution.Plant communications · 2026Article
- Generating drought- and salt-tolerant tomato germplasm through bioengineering of the ethylene response factor SlERF.J2.Engineering in life sciences · 2026Article
- A telomere-to-telomere gapless genome reveals SlPRR1 control of circadian rhythm and photoperiodic flowering in tomato.GigaScience · 2025Article
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7 authors.
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Abstract
Cultivated tomato (Solanum lycopersicum) is a major vegetable crop of high economic value that serves as an important model for studying flowering time in day-neutral plants. A complete, continuous, and gapless genome of cultivated tomato is essential for genetic research and breeding programs. Here, we report the construction of a telomere-to-telomere (T2T) gap-free genome of S. lycopersicum cv. VF36 using a combination of sequencing technologies. The 815.27-Mb T2T "VF36" genome contained 600.23 Mb of transposable elements. Through comparative genomics and phylogenetic analysis, we identified structural variations between the "VF36" and "Heinz 1706" genomes and found no evidence of a recent species-specific whole-genome duplication in the "VF36" tomato. Furthermore, a core circadian oscillator, SlPRR1, was identified, which peaked at night in a circadian rhythm. CRISPR/Cas9-mediated knockdown of SlPRR1 in tomatoes demonstrated that slprr1 mutant lines exhibited significantly earlier flowering under long-day condition than wild type. We present a hypothetical model of how SlPRR1 regulates flowering time and chlorophyll biosynthesis in response to photoperiod. This T2T genomic resource will accelerate the genetic improvement of large-fruited tomatoes, and the SlPRR1-related hypothetical model will enhance our understanding of the photoperiodic response in cultivated tomatoes, revealing a regulatory mechanism for manipulating flowering time.
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