ArticleBMC genomics2023
Haplotype variations of sucrose phosphate synthase B gene among sugarcane accessions with different sucrose content.
Article in BMC genomics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Integrated Metabolomics and Transcriptomics Analysis of Exogenous Arginine-Mediated Sucrose Accumulation in Sugarcane.International journal of molecular sciences · 2026Article
- Integrated comparative transcriptomics and WGCNA reveal the core transcriptional network and hub genes regulating sucrose accumulation in Saccharum spp.BMC plant biology · 2026Article
- Review
- Genome-Wide Identification, Evolution, and Expression Patterns of the Fructose-1,6-Bisphosphatase Gene Family inPlants (Basel, Switzerland) · 2025Article
- Genetic Engineering for Enhancing Sugarcane Tolerance to Biotic and Abiotic Stresses.Plants (Basel, Switzerland) · 2024Review
- Current perspectives on the regulatory mechanisms of sucrose accumulation in sugarcane.Heliyon · 2024Review
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Authors and funding
12 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundSucrose phosphate synthase B (SPSB) gene encoding an important rate-limiting enzyme for sucrose synthesis in sugarcane is mainly expressed on leaves, where its alleles control sucrose synthesis. In this study, genetic variation of SPSB gene represented by different haplotypes in sugarcane was investigated in hybrid clones with high and low sugar content and various accessory species.
resultsA total of 39 haplotypes of SPSB gene with 2, 824 bp in size were identified from 18 sugarcane accessions. These haplotypes mainly distributed on Chr3B, Chr3C, and Chr3D according to the AP85-441 reference genome. Single nucleotide polymorphisms (SNPs) and insertion/deletion (InDels) were very dense (42 bp/sequence variation) including 44 transitional and 23 transversional SNPs among the 39 haplotypes. The sequence diversity related Hd, Eta, and Pi values were all lower in clones of high sucrose content (HS) than those in clones of low sucrose content (LS). The evolutionary network analysis showed that about half SPSB haplotypes (19 out of 39) were clustered into one group, including 6 (HAP4, HAP6, HAP7, HAP9, HAP17 and HAP20) haplotypes under positive selection in comparison to HAP26 identified in Badila (S. officinarum), an ancestry noble cane species and under purification selection (except HAP19 under neutral selection) in comparison to HAP18 identified from India1 (S. spontaneum), an ancestry species with low sugar content but high stress tolerance. The average number of haplotypes under positive selection in HS clones was twice as that in LS. Most of the SNPs and InDels sequence variation sites were positively correlated with sucrose and fiber content and negatively correlated with reducing sugar.
conclusionsA total of 39 haplotypes of SPSB gene were identified in this study. Haplotypes potentially associated with high sucrose synthesis efficiency were identified. The mutations of SPSB haplotypes in HS were favorable and tended to be selected and fixed. The results of this study are informative and beneficial to the molecular assisted breeding of sucrose synthesis in sugarcane in the future.
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