Rose

Leus, Leen; Laere, Katrijn Van; Riek, Jan De; Huylenbroeck, Johan Van

doi:10.1007/978-3-319-90698-0_27

Cited by 35 publications

(28 citation statements)

References 192 publications

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“…Rose is the world's most important ornamental plant, with economic, cultural, and symbolic value (Gudin, 1999 ; Hibrand Saint-Oyant et al, 2018 ; Raymond et al, 2018 ). It is known that 8 to 15 species contributed to the modern rose cultivars (Leus et al, 2018 ), and unfortunately, this important genetic pool of modern roses is decaying due to intensive breeding (Matsumoto et al, 1998 ; Scariot et al, 2006 ; Leus et al, 2018 ). Wild rose species germplasm is necessary for resistance to introgression (Young et al, 2019 ), flower color breeding (Zlesak, 2015 ), and introduction of specific traits (Leus et al, 2018 ), and therefore it is necessary to protect R. chinensis var.…”

Section: Discussionmentioning

confidence: 99%

Phylogeography and Population Genetics of Rosa chinensis var. spontanea and R. lucidissima Complex, the Important Ancestor of Modern Roses

et al. 2022

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Rosa chinensis var. spontanea and R. lucidissima complex are the morphologically very similar key ancestors of modern roses with high importance in rose research and breeding. Although widely distributed in subtropical central and southwestern China, these two taxa are highly endangered. We sampled a total of 221 specimens and 330 DNA samples from 25 populations across the two taxa's whole range. Leaf morphological traits were compared. Two chloroplast DNA intergenic spacers (trnG-trnS, petL-psbE) and ITS were used for population genetics and phylogenetic study to delimit the boundary between the two taxa, assess the genetic variation, uncover the possible evolutionary mechanism responsible for the differentiation within the complex, and make the conservation recommendations. The complex exhibited high levels of genetic variation (hTcpDNA = 0.768, hTITS = 0.726) and high population differentiation even over small geographic distance. We suggest R. chinensis var. spontanea and R. lucidissma be treated as independent taxa, and the northern populations around and within the Sichuan Basin being R. chinensis var. spontanea, having broader leaflets and paler full-blooming flowers, while those in the middle and southern Yunnan-Guizhou Plateau and the adjacent regions being R. lucidissma, having narrower leaflets and darker full-blooming flowers. Transitional areas between the southeastern Sichuan Basin and northeastern Guizhou are the contact or the hybridization zone of the two taxa. Ancestral haplotypes of the complex (R. lucidissma) evolved at about 1.21–0.86 Mya in southeastern Yunnan-Guizhou Plateau and its adjacent regions and survived there during the Quaternary Oscillation. Ancestral haplotypes of R. chinensis var. spontanea deviated from R. lucidissma at about 0.022–0.031 Mya at the transitional areas (Daloushan and Wulingshan Mountains) between the northeastern edge of Yunnan-Guizhou Plaeteau and the southeastern border of Sichuan Basin, where they survived the LGM. The evolution of the complex included spatial isolation and inter-species hybridization. The complex's endangered status might be the result of over-exploitation for its ornamental and medical value, or due to reforestation of some originally open habitats. We provide specific recommendations for the two taxa's in situ and ex situ conservation.

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Section: Discussionmentioning

confidence: 99%

Phylogeography and Population Genetics of Rosa chinensis var. spontanea and R. lucidissima Complex, the Important Ancestor of Modern Roses

et al. 2022

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“…Rose ( Rosa hybrida L.) is one of the most important ornamental plants worldwide, with great symbolic, cultural, and economic value (Cheng et al, 2021; Magnard et al, 2015; Raymond et al, 2018; Smulders et al, 2019). The genus Rosa contains about 200 species and over 30,000 modern rose cultivars (Leus et al, 2018). Roses have been cultivated since antiquity for their flowers and essential oils (Eugster & Märki‐Fischer, 1991), are frequently used in urban greening, and are the most popular garden plants worldwide (Wang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Physiological and molecular responses of different rose (Rosa hybrida L.) cultivars to elevated ozone levels

Wang

Yang

et al. 2023

Plant Direct

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The increasing ground-level ozone (O 3 ) pollution resulting from rapid global urbanization and industrialization has negative effects on many plants. Nonetheless, many gaps remain in our knowledge of how ornamental plants respond to O 3 . Rose (Rosa hybrida L.) is a commercially important ornamental plant worldwide. In this study, we exposed four rose cultivars ("Schloss Mannheim," "Iceberg," "Lüye," and "Spectra") to either unfiltered ambient air (NF), unfiltered ambient air plus 40 ppb O 3 (NF40), or unfiltered ambient air plus 80 ppb O 3 (NF80). Only the cultivar "Schloss Mannheim" showed significant O 3 -related effects, including foliar injury, reduced chlorophyll content, reduced net photosynthetic rate, reduced stomatal conductance, and reduced stomatal apertures. In "Schloss Mannheim," several transcription factor genes-HSF, WRKY, and MYB genes-were upregulated by O 3 exposure, and their expression was correlated with that of NCED1, PP2Cs, PYR/PYL, and UGTs, which are related to ABA biosynthesis and signaling. These results suggest that HSF, WRKY, and MYB transcription factors and ABA are important components of the plant response to O 3 stress, suggesting a possible strategy for cultivating O 3 -tolerant rose varieties.

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“…More than 30 000 rose cultivars have been developed [ 1 ] mainly by cross breeding. Patterns of inheritance are quite difficult to predict for most traits, as roses are predominantly outcrossing and highly heterozygous plants [ 2 ]. As a consequence, the success of cross breeding in the rose has largely depended on chance and the experience of breeders, requiring enormous efforts to make new cultivars with desirable traits [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

The identification of the Rosa S-locus provides new insights into the breeding and wild origins of continuous-flowering roses

Kawamura

Ueda

Matsumoto

et al. 2022

Horticulture Research

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This study aims to: (i) identify the Rosa S-locus controlling self-incompatibility (SI); (ii) test the genetic linkage of the S-locus with other loci controlling important ornamental traits, such as the continuous-flowering (CF) characteristic; (iii) identify the S-alleles (SC) of old Chinese CF cultivars (e.g, Old Blush, Slater’s Crimson China) and examine the changes in the frequency of cultivars with Sc through the history of breeding; (iv) identify wild species carrying the Sc-alleles to infer wild origins of CF cultivars. We identified a new S-RNase (SC2) of Rosa chinensis in a contig from a genome database that has not been integrated into one of the seven chromosomes yet. Genetic mapping indicated that SC2 is allelic to the previously-identified S-RNase (SC1) in chromosome 3. Pollination experiments with half-compatible pairs of roses confirmed that they are the pistil-determinant of SI. The segregation analysis of an F1-population indicated genetic linkage between the S-locus and the floral repressor gene KSN. The non-functional allele ksn is responsible for the CF characteristic. A total of five S-alleles (SC1–5) were identified from old CF cultivars. The frequency of cultivars with SC dramatically increased after the introgression of ksn from Chinese to European cultivars and remains high (80%) in modern cultivars, suggesting that S-genotyping is helpful for effective breeding. Wild individuals carrying SC were found in Rosa multiflora (SC1), Rosa chinensis var. spontanea (SC3), and Rosa gigantea (SC2, SC4), supporting the hypothesis of hybrid origins of CF cultivars and providing a new evidence for the involvement of Rosa multiflora.

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Rose

Cited by 35 publications

References 192 publications

Phylogeography and Population Genetics of Rosa chinensis var. spontanea and R. lucidissima Complex, the Important Ancestor of Modern Roses

Phylogeography and Population Genetics of Rosa chinensis var. spontanea and R. lucidissima Complex, the Important Ancestor of Modern Roses

Physiological and molecular responses of different rose (Rosa hybrida L.) cultivars to elevated ozone levels

The identification of the Rosa S-locus provides new insights into the breeding and wild origins of continuous-flowering roses

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