Molecular Phylogeny of Russian Species of the Genus Spiraea (Rosaceae) according to the Nucleotide Variability of the ITS Nuclear rDNA Region

Полякова, Т. А.; Shatokhina, A. V.; Политов, Д. В.

doi:10.1134/s1022795422110084

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…Second, more detailed revisions of the infrageneric classification and species boundary delimitation of Spiraea are needed. It is evident that the traditional classification system within Spiraea is inconsistent with the results obtained from plastid data ([ 23 ]; this study), nuclear ribosomal DNA internal transcribed spacer (nrDNA ITS) sequences [ 6 , 7 ], and their combined analyses [ 8 , 9 ]. This inconsistency strongly suggests a problem with the traditional infrageneric classification of Spiraea .…”

Section: Discussionmentioning

confidence: 57%

Plastid genome and its phylogenetic implications of Asiatic Spiraea (Rosaceae)

Zhang,

Yan,

Wei

et al. 2024

BMC Plant Biol

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Background Spiraea L. is a genus comprising approximately 90 species that are distributed throughout the northern temperate regions. China is recognized as the center of species diversity for this genus, hosting more than 70 species, including 47 endemic species. While Spiraea is well-known for its ornamental value, its taxonomic and phylogenetic studies have been insufficient. Results In this study, we conducted sequencing and assembly of the plastid genomes (plastomes) of 34 Asiatic Spiraea accessions (representing 27 Asiatic Spiraea species) from China and neighboring regions. The Spiraea plastid genome exhibits typical quadripartite structures and encodes 113–114 genes, including 78–79 protein-coding genes (PCGs), 30 tRNA genes, and 4 rRNA genes. Linear regression analysis revealed a significant correlation between genome size and the length of the SC region. By the sliding windows method, we identified several hypervariable hotspots within the Spiraea plastome, all of which were localized in the SC regions. Our phylogenomic analysis successfully established a robust phylogenetic framework for Spiraea, but it did not support the current defined section boundaries. Additionally, we discovered that the genus underwent diversification after the Early Oligocene (~ 30 Ma), followed by a rapid speciation process during the Pliocene and Pleistocene periods. Conclusions The plastomes of Spiraea provided us invaluable insights into its phylogenetic relationships and evolutionary history. In conjunction with plastome data, further investigations utilizing other genomes, such as the nuclear genome, are urgently needed to enhance our understanding of the evolutionary history of this genus.

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Section: Discussionmentioning

confidence: 57%

Plastid genome and its phylogenetic implications of Asiatic Spiraea (Rosaceae)

Zhang,

Yan,

Wei

et al. 2024

BMC Plant Biol

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“…The multiple sequence alignment of the identified RSHs were analyzed by ClustalW2 in MEGA 11 software (Polyakova et al, 2022). The phylogenetic tree containing TaRSHs, AtRSHs (van der Biezen et al, 2000), OsRSHs (Du et al, 2019), SlRSHs and ZmRSHs was constructed by neighbor-joining method (1000 bootstrap replicates) and modified by iTol online tool (Interactive tree of Life, http://ITOL.embl.de).…”

Section: Phylogenetic Analysis Of Rshsmentioning

confidence: 99%

Identification, characterization and expression analysis of wheat RSH family genes under abiotic stress

Wang,

Hong,

Wang

et al. 2023

Front. Plant Sci.

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Guanosine pentaphosphate and guanosine tetraphosphate are collectively called (p)ppGpp (Guanosine tetraphosphate and pentaphosphate). (p)ppGpp content in plants is affected by conditions such as light, salt, pH, UV light, and environmental phytohormones. The synthesis and hydrolysis of (p)ppGpp in plants is accomplished by a class of proteins called RSH (RelA/SpoT homologs). To date, a systematic and comprehensive genome-wide analysis of the RSH gene family in wheat and its closely related species has not been conducted. In this study, 15, 14, 12, and 8 members of RSH were identified in wheat (Triticum aestivum), Triticum dicoccoides, Triticum urartu and Aegilops tauschii respectively. Based on the conserved structural domains of the RSH genes, the TaRSHs have been categorized into TaRSH and TaCRSH. The gene duplications in the TaRSH gene family were all identified as segmental duplications indicating that the TaRSH family plays a significant role in expansion and that segmental duplications maintain a degree of genetic stability. Through the analysis of transcriptome data and RT-qPCR experiments, it was observed that the expression levels of TaRSHs were upregulated in response to abiotic stress. This upregulation suggests that TaRSHs play a crucial role in enhancing the resilience of wheat to adverse environmental conditions during its growth and development. Their increased expression likely contributes to the acquisition of stress tolerance mechanisms in wheat. Especially under NaCl stress, the expression levels increased most significantly. The more detailed systematic analysis provided in this article will help us understand the role of TaRSHs and provide a reference for further research on its molecular biological functions in wheat.

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Molecular Phylogeny of Russian Species of the Genus Spiraea (Rosaceae) according to the Nucleotide Variability of the ITS Nuclear rDNA Region

Cited by 2 publications

References 24 publications

Plastid genome and its phylogenetic implications of Asiatic Spiraea (Rosaceae)

Plastid genome and its phylogenetic implications of Asiatic Spiraea (Rosaceae)

Identification, characterization and expression analysis of wheat RSH family genes under abiotic stress

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