Genetic variation and phylogenetic relationships among Rehmannia (Scrophulariaceae) species as revealed by a novel set of single-copy nuclear gene markers

Huang, Jing; Zeng, Shuyun; Zhao, Jinyan; Han, Kai; Li, Jianfang; Li, Zhong-Hu; Liu, Zhan‐Lin

doi:10.1016/j.bse.2016.03.011

Cited by 4 publications

(5 citation statements)

References 25 publications

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“…Recent studies using chloroplast or nuclear gene fragments indicated that two pairs of species groups, R. ela ta- R. piasezkii , R. glutinosa - R. solanifolia , had completely identical sequences, respectively and could be treated as two species [7,9,10]. R. chingii [5] or R. piasezkii [7,8] were considered as the basal taxon of the genus.…”

Section: Discussionmentioning

confidence: 99%

“…R. chingii [5] or R. piasezkii [7,8] were considered as the basal taxon of the genus. But our phylogenetic analyses of Rehmannia plastomes were inconsistent with any of these works, inferring all Rehmannia taxa as separate species (Figure 6).…”

Section: Discussionmentioning

confidence: 99%

“…Besides the uncertain familial placement of Rehmannia , interspecific relationships within the genus are also unsolved. Despite of the differences in some flower traits, the two tetraploid species R. glutinosa and R. solanifolia share identical chloroplast and nuclear haplotypes [7,8], inferring the possibility of the symnonym of one species. Similarly, evidence from morphology, pollen, allozyme, chemical composition, and molecular data support the theory that R. piasezkii and R. elata should also be considered one species [7,9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, interspecific phylogenetic relationships are incongruent when constructed by different DNA fragments. Chloroplast fragments supported R. chingii was the basal taxon of the genus [5] while R. piasezkii was confirmed as the sister group to the remaining taxa within the genus by nuclear data [7,8]. …”

Section: Introductionmentioning

confidence: 99%

“…For example, bracteoles absence or presence, considered as the critical trait to discriminate R. piasezkii from R. chingii , are not species-specific and variable among intraspecific individuals [9]. Although molecular data such as chloroplast and/or nuclear DNA fragments provide some information for the taxonomy of Rehmannia [5,7,8], phylogenetic analysis based on these limited data are usually unreliable for their low resolution. …”

Section: Introductionmentioning

confidence: 99%

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The Complete Chloroplast Genome Sequences of Six Rehmannia Species

Zeng

Zhou

Han

et al. 2017

Genes

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Rehmannia is a non-parasitic genus in Orobanchaceae including six species mainly distributed in central and north China. Its phylogenetic position and infrageneric relationships remain uncertain due to potential hybridization and polyploidization. In this study, we sequenced and compared the complete chloroplast genomes of six Rehmannia species using Illumina sequencing technology to elucidate the interspecific variations. Rehmannia plastomes exhibited typical quadripartite and circular structures with good synteny of gene order. The complete genomes ranged from 153,622 bp to 154,055 bp in length, including 133 genes encoding 88 proteins, 37 tRNAs, and 8 rRNAs. Three genes (rpoA, rpoC2, accD) have potentially experienced positive selection. Plastome size variation of Rehmannia was mainly ascribed to the expansion and contraction of the border regions between the inverted repeat (IR) region and the single-copy (SC) regions. Despite of the conserved structure in Rehmannia plastomes, sequence variations provide useful phylogenetic information. Phylogenetic trees of 23 Lamiales species reconstructed with the complete plastomes suggested that Rehmannia was monophyletic and sister to the clade of Lindenbergia and the parasitic taxa in Orobanchaceae. The interspecific relationships within Rehmannia were completely different with the previous studies. In future, population phylogenomic works based on plastomes are urgently needed to clarify the evolutionary history of Rehmannia.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Complete Chloroplast Genome Sequences of Six Rehmannia Species

Zeng

Zhou

Han

et al. 2017

Genes

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How Far Advanced is the DNA-Based Identification of the BELFRIT-List?

Novak

Ruzicka

Schmiderer

2017

Food Supplements Containing Botanicals: Benefits, Side Effects and Regulatory Aspects

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Rehmannieae or Rehmanniaceae? Evidence from plastome sequences and floral morphology

Zhi

Wen

et al. 2021

Botanical Journal of the Linnean Society

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Rehmannia and Triaenophora form a clade and are widely accepted as being closely allied with Orobanchaceae in Lamiales. However, the taxonomic rank of this clade and its geographical origins are understudied and poorly known. The genera have together been recognized as Orobanchaceae tribe Rehmannieae or Rehmanniaceae. To re-evaluate the taxonomy and systematic position and affinities of these genera, we reconstructed a phylogenety using complete plastid genomes (plastomes) and performed an analysis of comparative floral development. Additionally, we investigated the geographical distributions of Rehmannia and Triaenophora to determine the centre of diversity and origin. The phylogenetic analyses showed that Rehmannia and Triaenophora formed a clade that is sister to all other Orobanchaceae. This relationship was also supported by fruit and floral morphological traits, such as capsules partly or half exserted from the persistent calyx tubes, reticulate testa of seeds, cochlear ascending corolla (rhinanthoid aestivation), late sympetalous corolla tube and axile placentation. In addition, the loss of the adaxial stamen leaving a gap at its expected initiation site and two lateral bracteoles in Rehmannia and Triaenophora may be derived or represent a phylogenetic transitional form in Lamiales. We suggest that Rehmannia and Triaenophora clade should be treated as Orobanchaceae tribe Rehmannieae rather than as a distinct family of Lamiales. The distribution pattern of Rehmannia and Triaenophora indicate that the Shennongjia-Wushan region in central China represents the geographical origin and centre of diversification of the genera.

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Genetic variation and phylogenetic relationships among Rehmannia (Scrophulariaceae) species as revealed by a novel set of single-copy nuclear gene markers

Cited by 4 publications

References 25 publications

The Complete Chloroplast Genome Sequences of Six Rehmannia Species

The Complete Chloroplast Genome Sequences of Six Rehmannia Species

How Far Advanced is the DNA-Based Identification of the BELFRIT-List?

Rehmannieae or Rehmanniaceae? Evidence from plastome sequences and floral morphology

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