Background Suaeda glauca is a halophyte widely distributed in saline and sandy beaches, with strong saline-alkali tolerance. It is also a beautiful landscape plant with high development prospects and scientific research value. The S. glauca chloroplast genome has recently been reported; however, the mitochondria genome is still unexplored. Results This study assembled the mitochondria genome and annotated the mitochondrial genes of S. glauca based on the Pacbio long reads. The circular mitochondrial genome of S. glauca has a length of 474,330 bp. The base composition of the S. glauca mt genome showed A (27.96%), T (28.01%), C (21.64%), G (21.64%). S. glauca mt genome has 51 genes, including 26 protein-coding genes, 22 tRNA genes, and 3 rRNA genes. Phylogenetic analysis with common genes of 28 species resulted in similar morphological classification. Conclusions As a Chenopodiaceae species, S. glauca mt genome will provide insights into the missing pieces in the evolution of sex determination and improve genomic breeding in the future.

Crassulacean acid metabolism photosynthesis pathway highlights the possible of sustainable production on margin agricultural land and crop improvement with higher water use efficiency by engineering CAM into C3 crops. A comprehensive view of the regulatory network of CAM photosynthesis is prerequisite for utilization CAM pathway. Diverse factors were involved in the regulation but many of them remain unexplained. Alternative splicing (AS) is a common and crucial posttranscriptional mechanism which get deep involved in responding to biotic and abiotic stresses. Using all the available RNA-seq data of pineapple, which is the most economic valuable CAM crops with abundant omics resource, we re-assembled a reference transcriptome and used to perform alternative splicing analysis associated with crassulacean acid metabolism. The results shown that AS events were prevalent in pineapple. CAM core genes, circadian clock genes, stomatal movement and starch metabolism related genes were found to be significantly differentially alternative spliced between photosynthesis and non-photosynthesis tissues across time course. Isoform switch events were found in many DAS genes, which indicated the sensitivity of AS across the CAM processes in pineapple. The dataset described here also contributed to identify promising candidate genes such as nAco00160 involved in CAM photosynthesis. Our results suggested that AS play an important regulatory role in CAM photosynthesis in pineapple and would help to gain a more systematic understanding about the regulatory networks of CAM photosynthesis.