Karyological diversity of wild Rosa in Yunnan, southwestern China

Jian, Hong; Zhang, Ting; Wang, Qi Gang; Li, Shu Bin; Zhang, Hao; Tang, Kai

doi:10.1007/s10722-012-9820-z

Cited by 19 publications

(20 citation statements)

References 25 publications

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“…In this study, the nuclear DNA content in genus Rosa varied from 0.73 pg in diploid R. zhongdianensis (Section Pimpinellifoliae) to 5.07 pg in decaploid R. praelucens (Section Microphyllae). Previous studies showed Roberts et al (2009); ploidy information in parenthesis () was estimated from the average sectional 1Cx-value in this study; others had been clearly investigated before (Tang 2009;Jian et al 2013). Table 2 ) #Sections with the same letter are in homogeneous subsets.…”

Section: Ploidy Level and Its Association With 1cx-valuementioning

confidence: 64%

“…It is well known that interspecific hybridization is common and even a major evolutionary factor in genus Rosa (Wissemann and Ritz 2007). Apart from hybridization, polyploidization might also have played important roles in the evolution and speciation of genus Rosa (Jian et al 2013). Most taxa in genus Rosa were diploid but differ significantly in 1Cx-value, which might indicate either hybridization with species with different nuclear DNA content of the same ploidy level (Yokoya et al 2000) or genome variation subject to amplification or deletion of repetitive noncoding DNA sequences (Price et al 1983) might have played important roles in the evolution and speciation of genus Rosa, for example, in Section Synstylae.…”

Section: Discussionmentioning

confidence: 99%

“…We do not know whether or not R. roxburghii was its ancestor, but it is reasonable to postulate that R. praelucens was closely related to Section Cinnamomeae according to the results of this study, as also shown by Tang (2009) with molecular data, taking its distribution and morphological characters into consideration. As far as Section Cinnamomeae was concerned, it was very rich in karyological diversity both in chromosomal morphology (Jian et al 2013) and ploidy level. The variation of DNA C-value in this section is also very complex.…”

Section: Discussionmentioning

confidence: 99%

“…The ploidy information of most taxa had been clearly investigated (Tang 2009;Jian et al 2013). Those with unknown ploidy information from Section Caninae and Section Carolinae were assigned according to the average sectional 1Cx-value reported by Roberts et al (2009).…”

Section: Ploidy Assignmentmentioning

confidence: 99%

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Nuclear DNA content and 1Cx-value variations in genusRosaL.

et al. 2014

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In order to investigate the systematic relationship and to complete the karyological data of rose, for the purpose of exploring desirable traits for genetic improvement of modern cultivars, nuclear DNA content of 204 accessions representing almost all sections of genus Rosa were estimated by flow cytometry. The 1Cx-value of each taxon was calculated according to the estimated DNA content. The results were as follows: (1) nuclear DNA content of the studied taxa varied from 0.73 pg in diploid R. zhongdianensis (Section Pimpinellifoliae) to 5.07 pg in decaploid R. praelucens (Section Microphyllae), and nuclear DNA content of rose species generally increased with, but not simply proportional to, ploidy level; (2) 1Cx-value varied from 0.37 pg in R. zhongdianensis to 0.89 pg in R. brunonii (Section Synstylae), and the studied taxa were significantly different from each other in 1Cx-value; (3) there exist significant differences of 1Cx-values among sections, varying from 0.46 pg in Section Pimpinellifoliae to 0.77 pg in Section Synstylae; (4) ploidy level varied within most sections except in Section Banksianae, Section Bracteatae, Section Laevigatae and Section Synstylae, while the variation of 1Cx-value with ploidy level differed greatly among sections. The results suggested that taxonomic section should be taken into consideration when assigning ploidy of rose species from rapid estimates of DNA content by flow cytometry. Also, although it does not reflect the taxonomy and biosystematics sufficiently, nuclear DNA content and 1Cx-value can be used as reference points in the biogeographic, systematic and evolutionary study of genus Rosa.

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Section: Ploidy Level and Its Association With 1cx-valuementioning

confidence: 64%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Ploidy Assignmentmentioning

confidence: 99%

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Nuclear DNA content and 1Cx-value variations in genusRosaL.

et al. 2014

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“…FISH has been used to detect 45S rRNA genes in submedian regions [Hwang et al, 2011;Bustamante et al, 2014]. However, the centromeres of chromosomes in Rosa species are located in the median or submedian regions [Ma et al, 1997a;Akasaka et al, 2002Akasaka et al, , 2003Jian al., 2013;Yu et al, 2014]. Previous studies have shown that 45S rDNA sites are typically located at the ends of the short chromosome arms in the genus Rosa [Ma et al, 1997b;Fernández-Romero et al, 2001;Akasaka et al, 2003].…”

Section: Discussionmentioning

confidence: 99%

Distribution of 45S rDNA in Modern Rose Cultivars (Rosa hybrida), Rosa rugosa, and Their Interspecific Hybrids Revealed by Fluorescence in situ Hybridization

Ding

Xu²,

Wang³

et al. 2016

Cytogenet Genome Res

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To elucidate the evolutionary dynamics of the location and number of rDNA loci in the process of polyploidization in the genus Rosa, we examined 45S rDNA sites in the chromosomes of 6 modern rose cultivars (R. hybrida), 5 R. rugosa cultivars, and 20 hybrid progenies by fluorescence in situ hybridization. Variation in the number of rDNA sites in parents and their interspecific hybrids was detected. As expected, 4 rDNA sites were observed in the genomes of 4 modern rose cultivars, while 3 hybridization sites were observed in the 2 others. Two expected rDNA sites were found in 2 R. rugosa cultivars, while in the other 3 R. rugosa cultivars 4 sites were present. Among the 20 R. hybrida × R. rugosa offspring, 13 carried the expected number of rDNA sites, and 1 had 6 hybridization sites, which exceeded the expected number by far. The other 6 offspring had either 2 or 3 hybridization sites, which was less than expected. Differences in the number of rDNA loci were observed in interspecific offspring, indicating that rDNA loci exhibit instability after distant hybridization events. Abnormal chromosome pairing may be the main factor explaining the variation in rDNA sites during polyploidization.

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Comparative metabolomic analysis reveals nutritional properties and pigmentation mechanism of tea‐scented rosehips

Zhou,

Sun,

Luo

et al. 2024

J Sci Food Agric

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BACKGROUNDThe fruits of the genus Rosa, commonly known as rosehips, have attracted significant attention owing to their rich content of various bioactive compounds. However, their utility is generally secondary to the ornamental appeal of their flowers. This study aimed to explore the quality differences among tea‐scented rosehips found in Yunnan, China, including those of Rosa odorata var. odorata (RO), Rosa odorata var. gigantea (RG), and Rosa yangii (RY). Morphological characteristics, chemical composition, and antioxidant activity of their fruits were evaluated.RESULTSThe study revealed significant variability in composition and biological activities based on fruit color. RO exhibited the highest levels of polyphenols, flavonoids, anthocyanins, carotenoids, and vitamin C, with the strongest antioxidant activity (10.99 μmol Trolox·g−1), followed by RG (7.91 μmol Trolox·g−1) and RY (6.52 μmol Trolox·g−1). This supports RO's potential as a functional food source. Untargeted metabolomics identified and quantified 502 metabolites, with flavonoids (171) and phenolic acids (147) as the main metabolites. The differential metabolites among the fruits are primarily enriched for flavonoid biosynthesis and phenylpropanoid biosynthesis pathways. Insights into color formation supported the role of anthocyanins, flavones, and flavonols in fruit color variation.CONCLUSIONTea‐scented rosehips offer vibrant colors and high nutritional value with potent biological activities. Rosa odorata var. odorata stands out as a functional food source owing to its rich bioactive compounds. These findings lay the groundwork for utilizing rosehips in functional foods, health supplements, and food additives, emphasizing the practical and beneficial applications of Rosa spp. independent of their ornamental value. © 2023 Society of Chemical Industry.

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Karyological diversity of wild Rosa in Yunnan, southwestern China

Cited by 19 publications

References 25 publications

Nuclear DNA content and 1Cx-value variations in genusRosaL.

Nuclear DNA content and 1Cx-value variations in genusRosaL.

Distribution of 45S rDNA in Modern Rose Cultivars <b><i>(Rosa hybrida)</i></b>, <b><i>Rosa rugosa</i></b>, and Their Interspecific Hybrids Revealed by Fluorescence in situ Hybridization

Comparative metabolomic analysis reveals nutritional properties and pigmentation mechanism of tea‐scented rosehips

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