Cited by 15Plant tissue culture and regenerationPlant Molecular Biology ResearchEpigenetics and DNA Methylation

A novel micropropagation of Lycium ruthenicum and epigenetic fidelity assessment of three types of micropropagated plants in vitro and ex vitro

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Gao, Yue, Wang, Qin-Mei, An, Qinxia, Cui, Jianguo, Zhou, Yongbin, Qi, Xinyu, Zhang, Lijie, Li, Lujia·2021·PLOS ONE

Abstract

Lycium ruthenicum is an excellent eco-economic shrub. Numerous researches have been conducted for the function of its fruits but scarcely focused on the somaclonal variation and DNA methylation. An efficient micropropagation protocol from leaves and stems of L.ruthenicum was developed in this study, in which not only the leaf explants but also the stem explants of L.ruthenicum were dedifferentiated and produced adventitious buds/multiple shoots on one type of medium. Notably, the efficient indirect organogenesis of stem explants was independent of exogenous auxin, which is contrary to the common conclusion that induction and proliferation of calli is dependent on exogenous auxin. We proposed that sucrose supply might be the crucial regulator of stem callus induction and proliferation of L.ruthenicum. Furthermore, results of methylation-sensitive amplified polymorphism (MSAP) showed that DNA methylation somaclonal variation (MSV) of CNG decreased but that of CG increased after acclimatization. Three types of micropropagated plants (from leaf calli, stem calli and axillary buds) were epigenetically diverged more from each other after acclimatization and the ex vitro micropropagated plants should be selected to determine the fidelity. In summary, plants micropropagated from axillary buds and leaves of L.ruthenicum was more fidelity and might be suitable for preservation and propagation of elite germplasm. Also, leaf explants should be used in transformation. Meanwhile, plants from stem calli showed the highest MSV and might be used in somaclonal variation breeding. Moreover, one MSV hotspot was found based on biological replicates. The study not only provided foundations for molecular breeding, somaclonal variation breeding, preservation and propagation of elite germplasm, but also offered clues for further revealing novel mechanisms of both stem-explant dedifferentiation and MSV of L.ruthenicum.

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  • Histone proteins can undergo chemical modifications that alter chromatin structure and transcriptional activity, thereby contributing to phenotypic variability in micropropagated plants.

    “Histone proteins, which help package and organize DNA within chromosomes, can undergo chemical modifications that alter chromatin structure and transcriptional activity, thereby contributing to phenotypic variability in micropropagated plants [52,53].”

    From Somaclonal Variation and Clonal Fidelity in Commercial Micropropagation: Challenges and Perspectives (2025) · cites this paper as [53]

    The Introduction says that DNA methylation changes arising from micropropagation can affect phenotype, and the Results examine cytosine methylation in regenerated plants. Searches for histone modifications, chromatin structure, and transcriptional activity found no passage addressing the histone-based mechanism attributed to this source. (LLM, conf=0.75)

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Authors
Gao, Y., Wang, Q.-M., An, Q., Cui, J., Zhou, Y., Qi, X., Zhang, L., & Li, L.
Affiliations
Shenyang Agricultural University (CN)
Corresponding author
  • Gao, Yue
  • Wang, Qin-Mei
  • An, Qinxia
  • Cui, Jianguo
  • Zhou, Yongbin
  • Qi, Xinyu
  • Zhang, Lijie
  • Li, Lujia
Venue
PLOS ONE
Published
2021-02-23
Volume
16
Issue
2
Pages
e0247666
ISSN
1932-6203 (ISSN-L)
OpenAlex
W3129923581
Cited by
15
References
58
Citations by year
2025: 6 · 2024: 3 · 2023: 2 · 2022: 1 · 2021: 3
FWCI
0.71
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Natural Science Foundation of China (31600546)
  • Scientific Research Fund of Liaoning Provincial Education Department (LSNJC202023)
  • Opening Project of State Key Laboratory of Tree Genetics and Breeding (K2019202)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant tissue culture and regeneration
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
Lycium ruthenicum, micropropagation, somaclonal variation, DNA methylation, leaf explants, axillary buds, acclimatization, MSA-P, germplasm conservation
MeSH terms
Plant Breeding, Plant Leaves, Plant Roots, Plant Shoots, DNA Methylation, Lycium, Epigenesis, Genetic

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