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Zhou D, Wang J, Zhou F, Li Z, Qi Y, Hu T. The complete chloroplast genome of rhododendron williamsianum (ericaceae). Mitochondrial DNA B Resour 2024; 9:1058-1062. [PMID: 39155916 PMCID: PMC11328795 DOI: 10.1080/23802359.2024.2391085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 08/06/2024] [Indexed: 08/20/2024] Open
Abstract
Rhododendron williamsianum Rehder & E. H. Wilson 1913, is a plant with important horticultural value. Here we report its chloroplast genome. The total length of the chloroplast genome was 205,424 bp, with a GC content of 35.8%. It consisted of a 107,968 bp large single copy, a 2606 bp small single copy, and a pair of 47,425 bp inverted repeats separating them. Within the chloroplast genome, there were a total of 110 unique genes, which included 76 protein-coding genes, 4 rRNA genes, and 30 tRNA genes. Our phylogenetic analyses indicated that R. williamsianum was closely genetically related to R. sutchuenense and R. jingangshanicum. The findings from this study not only contribute to the genetic database of Rhododendron plants but also have implications for evolutionary research within the family Ericaceae.
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Affiliation(s)
- Daoyuan Zhou
- Forestry College, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Juan Wang
- Forestry College, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Fengjuan Zhou
- Forestry College, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Zhongxiang Li
- Shangcai Forestry Development Service Center, Zhumadian, China
| | - Yangyang Qi
- Forestry College, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Tingting Hu
- Forestry College, Xinyang Agriculture and Forestry University, Xinyang, China
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Rawat S, Jugran AK, Sharma H. Recent advancements in the physiological, genetic, and genomic research on Rhododendrons for trait improvement. 3 Biotech 2024; 14:164. [PMID: 38808301 PMCID: PMC11128433 DOI: 10.1007/s13205-024-04006-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 05/09/2024] [Indexed: 05/30/2024] Open
Abstract
High species diversity, hybridization potential, broad geographical dispersal range and ornamental characteristics (i.e., attractive size, shape, structure, flowers, and evergreen) have fetched a good international market for Rhododendron. However, most species are restricted to specific geographic areas due to their habitat specificity in acidic soil and cold climates, resulting many species being classified under threat categories of the IUCN. In this review, advances in research on Rhododendron for improvement to floral display quality and stress resistance have been described. The low genetic barrier among species has created opportunities for extensive hybridization and ploidy alteration for introducing quality and adaptive traits during the development of new varieties. Recent technological advances have supported investigations into the mechanism of flower development, as well as cold tolerance and pathogen resistance mechanisms in the Rhododendron. However, most of the species have limited adaptability to drought, line-tolerance, pathogen resistance, and high-temperature conditions and this resistance ability present in few species largely remains unexplored. Additionally, the available genetic diversity and genomic information on species, and possibilities for their application in molecular breeding have been summarized. Overall, genomic resource data are scarce in the majority of the members of this genus. Finally, various research gaps such as genetic mapping of quality traits, understanding the molecular mechanism of quality-related traits and genomic assortment in Rhododendron members have been discussed in the future perspective section. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-04006-6.
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Affiliation(s)
- Sandeep Rawat
- Sikkim Regional Centre, G. B. Pant National Institute of Himalayan Environment, Pangthang, Gangtok, Sikkim 737101 India
| | - Arun K. Jugran
- Garhwal Regional Centre, G. B. Pant National Institute of Himalayan Environment, Srinagar, Uttarakhand 246174 India
| | - Himanshu Sharma
- National Agri-Food Biotechnology Institute (NABI), Sector-81, SAS Nagar, Mohali, Punjab 140306 India
- Faculty of Applied Sciences and Biotechnology, Shoolini University, Solan, Himachal Pradesh 173229 India
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Li Z, Huang Z, Wan X, Yu J, Dong H, Zhang J, Zhang C, Wang S. Complete chloroplast genome sequence of Rhododendronmariesii and comparative genomics of related species in the family Ericaeae. COMPARATIVE CYTOGENETICS 2023; 17:163-180. [PMID: 37650109 PMCID: PMC10464601 DOI: 10.3897/compcytogen.17.101427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 07/26/2023] [Indexed: 09/01/2023]
Abstract
Rhododendronmariesii Hemsley et Wilson, 1907, a typical member of the family Ericaeae, possesses valuable medicinal and horticultural properties. In this research, the complete chloroplast (cp) genome of R.mariesii was sequenced and assembled, which proved to be a typical quadripartite structure with the length of 203,480 bp. In particular, the lengths of the large single copy region (LSC), small single copy region (SSC), and inverted repeat regions (IR) were 113,715 bp, 7,953 bp, and 40,918 bp, respectively. Among the 151 unique genes, 98 were protein-coding genes, 8 were tRNA genes, and 45 were rRNA genes. The structural characteristics of the R.mariesiicp genome was similar to other angiosperms. Leucine was the most representative amino acid, while cysteine was the lowest representative. Totally, 30 codons showed obvious codon usage bias, and most were A/U-ending codons. Six highly variable regions were observed, such as trnK-pafI and atpE-rpoB, which could serve as potential markers for future barcoding and phylogenetic research of R.mariesii species. Coding regions were more conserved than non-coding regions. Expansion and contraction in the IR region might be the main length variation in R.mariesii and related Ericaeae species. Maximum-likelihood (ML) phylogenetic analysis revealed that R.mariesii was relatively closed to the R.simsii Planchon, 1853 and R.pulchrum Sweet,1831. This research will supply rich genetic resource for R.mariesii and related species of the Ericaeae.
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Affiliation(s)
- Zhiliang Li
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei Province, ChinaHuanggang Normal UniversityHuanggangChina
| | - Zhiwei Huang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei Province, ChinaHuanggang Normal UniversityHuanggangChina
| | - Xuchun Wan
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei Province, ChinaHuanggang Normal UniversityHuanggangChina
| | - Jiaojun Yu
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei Province, ChinaHuanggang Normal UniversityHuanggangChina
| | - Hongjin Dong
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei Province, ChinaHuanggang Normal UniversityHuanggangChina
| | - Jialiang Zhang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei Province, ChinaHuanggang Normal UniversityHuanggangChina
| | - Chunyu Zhang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei Province, ChinaHuanggang Normal UniversityHuanggangChina
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, ChinaHuazhong Agricultural UniversityWuhanChina
| | - Shuzhen Wang
- College of Biology and Agricultural Resources, Huanggang Normal University, Huanggang, 438000, Hubei Province, ChinaHuanggang Normal UniversityHuanggangChina
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An R, Niu M, Lou X, Huang H, Lin E. The complete chloroplast genome of Rhododendron huadingense (Ericaceae). Mitochondrial DNA B Resour 2022; 7:1910-1912. [PMCID: PMC9629095 DOI: 10.1080/23802359.2022.2135403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Ran An
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Mingyue Niu
- Huading Forestry Farm, Tiantai, Zhejiang, China
| | - Xiongzhen Lou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Huahong Huang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
| | - Erpei Lin
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, Zhejiang, China
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