<i>Ilex sanqingshanensis</i> sp. nov. (Aquifoliaceae) from Jiangxi Province, China

Shi, Shi; Chen, Sufang; Fang-hua, Zhong; Wu, Guang-Xi; Liao, Wenbo; Fan, Qingxia

doi:10.1111/njb.00769

Cited by 5 publications

(5 citation statements)

References 9 publications

(14 reference statements)

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“…occurring in the Sanqing Mountain were also taken into account (sampled or downloaded the sequences from GenBank). Species delimitation was in accordance with the descriptions given by Flora of China (Chen et al 2018), Shi et al (2015), and Yang (2020).…”

Section: Methodsmentioning

confidence: 84%

“…× sanqingshanensis distinctly differs from the two parental species in all of the eight leaf traits, making it highly peculiar and distinguishable in morphology. Consequently, the novel characters derived from the fusion of hugely divergent parental species had misled botanists to treat the hybrid as a new species and overlook the clues of hybridization (Shi et al 2015). In the genus Ilex, such confusion caused by hybridization was common, e.g., I.…”

Section: Necessity Of Molecular Evidence In Erecting Ilex Speciesmentioning

confidence: 99%

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Hybrid origin and status of the endangered Ilex sanqingshanensis revealed by molecular and morphological evidence

Liu

Zou

et al. 2023

Preprint

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Identification of natural hybrids considered as endangered species is of vital importance in biodiversity conservation and taxonomy, as natural hybrids will usually waste the conservation resource and obscure the divergences between distinct species. During the field surveys in the Sanqing Mountain, we found the endangered endemic species, Ilex sanqingshanensis, strictly co-occurred with I. ficoidea and I. pernyi and then supposed a hybrid origin for this taxon. Combing the molecular analyses of ITS and cpDNA (petA-psbJ + psbA-trnH) with the morphological analyses of eight leaf characters, we confirmed this taxon to be a hybrid between I. ficoidea and I. pernyi and accepted it as I. × sanqingshanensis. Despite the presence of intermediacy in morphology, this hybrid is sharply distinct from the two parents in all tested traits, misleading the botanists to treat it as a species. Considering the inadequacies of morphological distinctions in distinguishing holly hybrids, we have emphasized the necessity of molecular evidence for erecting Ilex species.

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Section: Methodsmentioning

confidence: 84%

Section: Necessity Of Molecular Evidence In Erecting Ilex Speciesmentioning

confidence: 99%

Hybrid origin and status of the endangered Ilex sanqingshanensis revealed by molecular and morphological evidence

Liu

Zou

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Consequently, the novel characters derived from the fusion of hugely divergent parental species had misled botanists to treat the hybrid as a new species and overlook the clues of hybridization (Shi et al 2015). In the genus Ilex, such confusion caused by hybridization was common, e.g., I.…”

Section: Discussionmentioning

confidence: 99%

Hybrid origin and hybrid status of the endangered Ilex sanqingshanensis revealed by molecular and morphological evidence

Liu,

Li,

Zou

et al. 2024

Plant Syst Evol

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Identi cation of natural hybrids considered as endangered species is of vital importance in biodiversity conservation and taxonomy, as natural hybrids will usually waste the conservation resource and obscure the divergences between distinct species. During the eld surveys in the Sanqing Mountain, we found the endangered endemic species, Ilex sanqingshanensis, strictly co-occurred with I. coidea and I. pernyi and then supposed a hybrid origin for this taxon. Combing the molecular analyses of ITS and cpDNA (petA-psbJ + psbA-trnH) with the morphological analyses of eight leaf characters, we con rmed this taxon to be a hybrid between I. coidea and I. pernyi and accepted it as I. × sanqingshanensis. Despite the presence of intermediacy in morphology, this hybrid is sharply distinct from the two parents in all tested traits, misleading the botanists to treat it as a species. Considering the inadequacies of morphological distinctions in distinguishing holly hybrids, we have emphasized the necessity of molecular evidence for erecting Ilex species.

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“…Therefore, a number of biological investigations have been focused on taxonomic, phylogenetic, and genomic studies. On taxonomy, new taxa continue to be discovered [20][21][22]. In terms of phylogeny, DNA molecular evidence has been widely used to reveal evolutionary relationships between species.…”

Section: Introductionmentioning

confidence: 99%

The Genetic Diversity of Natural Ilex chinensis Sims (Aquifoliaceae) Populations as Revealed by SSR Markers

Hou,

Zhou,

Fang

et al. 2024

Forests

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Ilex chinensis Sims. is an evergreen tree species native to China and mainly distributed in the region south of the Qinling Mountains and the Huai River. This species has important ornamental, medicinal, ecological, and economic values, and plays a positive role in improving the environment and people’s lives. To reveal the genetic diversity and genetic structure of 401 individuals from 14 populations in the major distribution area of I. chinensis, 11 pairs of SSR primers were selected for PCR amplification. The products were then subjected to capillary electrophoresis, and the genetic diversity of Ilex individuals was analyzed using relevant software. The results showed that the genetic diversity of I. chinensis was at a moderate-to-high level. A total of 54 alleles were detected at 11 SSR loci in the 14 Ilex populations, with an average of 4.831 alleles per locus. AMOVA analysis indicated that the genetic variation of I. chinensis populations mainly originated within populations. A STRUCTURE analysis divided the 401 I. chinensis individuals into four different genetic clusters. The unweighted pair group methods using arithmetic averages (UPGMA) clustering based on Nei’s genetic distance revealed that the population from Xinping of Yuxi, Yunnan Province (XP), and the population from Longan of Qianxinan, Guizhou Province (LoA) were located in the outermost layer of the phylogenetic tree, indicating the furthest genetic relationship between these two population and other populations. The remaining populations could be roughly divided into two groups. Principal coordinate analysis (PCoA) demonstrated that the 401 individuals were clearly divided into three groups, which was consistent with the results of the STRUCTURE analysis and UPGMA clustering. This study identified the hotspots of genetic diversity of I. chinensis, as well as units for the conservation of individuals. It also revealed the patterns of genetic variation and population distribution of I. chinensis in different regions, providing a molecular basis for the geographical zoning and formulation of breeding programs for I. chinensis, as well as germplasm resource management.

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Ilex sanqingshanensis sp. nov. (Aquifoliaceae) from Jiangxi Province, China

Cited by 5 publications

References 9 publications

Hybrid origin and status of the endangered Ilex sanqingshanensis revealed by molecular and morphological evidence

Hybrid origin and status of the endangered Ilex sanqingshanensis revealed by molecular and morphological evidence

Hybrid origin and hybrid status of the endangered Ilex sanqingshanensis revealed by molecular and morphological evidence

The Genetic Diversity of Natural Ilex chinensis Sims (Aquifoliaceae) Populations as Revealed by SSR Markers

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