Assembly and comparative analysis of the complete mitochondrial genome of Brassica rapa var. Purpuraria

BMC Genomics, Journal Year: 2024, Volume and Issue: 25(1)

Published: June 1, 2024

Purple flowering stalk (Brassica rapa var. purpuraria) is a widely cultivated plant with high nutritional and medicinal value exhibiting strong adaptability during growing. Mitochondrial (mt) play important role in cells for energy production, developing an independent genetic system. Therefore, it meaningful to assemble annotate the functions mt genome of plants independently. Though there have been several reports referring Brassica species, B. purpuraria its functional gene variations when compared closely related species has not yet addressed.

Language: Английский

Comparative analysis of codon usage patterns in 16 chloroplast genomes of suborder Halimedineae

BMC Genomics, Journal Year: 2024, Volume and Issue: 25(1)

Published: Oct. 8, 2024

The Halimedineae are marine green macroalgae that play crucial roles as primary producers in various habitats, including coral reefs, rocky shores, embayments, lagoons, and seagrass beds. Several tropical species have calcified thalli, which contribute significantly to the formation of reefs. In this study, we investigated codon usage patterns main factors influencing bias 16 chloroplast genomes suborder Halimedineae. Nucleotide composition analysis revealed codons these were enriched A/U bases preferred end bases, distribution GC content followed a trend GC1 > GC2 GC3. 30 optimal encoding 17 amino acids identified, most all over-expressed preferentially ended with A/U. neutrality plot, effective number (ENc) parity rule 2 (PR2) plot indicated natural selection played major role shaping species. genetic relationships based on their RSCU values protein-coding genes showed closely related similar patterns. This study describes, for first time, characterization genomes, provides new insights into evolution suborder.

Language: Английский

Comparative Genomics Reveals Three Genetic Groups of the Whitefly Obligate Endosymbiont Candidatus Portiera aleyrodidarum

Insects, Journal Year: 2023, Volume and Issue: 14(11), P. 888 - 888

Published: Nov. 17, 2023

Maternally inherited obligate endosymbionts codiverge with their invertebrate hosts and reflect host's evolutionary history. Whiteflies (Hemiptera: Aleyrodidae) harbor one endosymbiont, Candidatus Portiera aleyrodidarum (hereafter Portiera). was anciently acquired by whitefly has been coevolving its host ever since. Uncovering the divergence of provides a fundamental basis for inspecting coevolutionary processes between bacteria hosts. To illustrate lineages across different species, we sequenced genome from Aleyrodes shizuokensis conducted comparative analysis on basic features gene evolution bacterial genomes five genera, namely Aleurodicus, Aleyrodes, Bemisia, Pealius, Trialeurodes. The results indicated that Bemisia possessed significantly larger genomes, fewer coding sequences (CDSs), lower density. Their arrangement differed notably those other genera. phylogeny nine resembled Moreover, were classified into three distinct genetic groups based distance, Aleurodicus (Aleurodicinae), (Aleyrodinae), another Trialeurrodes (Aleyrodinae). Synonymous nonsynonymous rate analyses, parity rule 2 plot neutrality effective number codons analyses supported distinction groups. Our distant exhibit genomic contents, implying codivergence endosymbionts. This work will enhance our understanding coevolution

Language: Английский