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- W3205593539 abstract "Abstract Euryodendron excelsum H. T. Chang, a critically endangered species endemic to China, is a source of valuable material for the furniture and construction industries. However, this species has some challenges associated with rooting during in vitro propagation that have yet to be resolved. In this study, we optimized rooting and conducted a transcriptomic analysis to appreciate its molecular mechanism, thereby promoting the practical application of in vitro propagation of E. excelsum , and providing technical support for the ecological protection of this rare and endangered species. Results showed that ex vitro rooting performed the highest rooting percentage with 98.33% at 25 d. During ex vitro rooting, there was a wide fluctuation of endogenous levels of indole-3-acetic acid (IAA) and hydrogen peroxide (H 2 O 2 ) at the stage of root primordia formation. Transcriptome analysis revealed multiple differentially expressed genes (DEGs) involved in AR development. DEGs involved in plant hormone signal transduction, such as genes encoding auxin-induced protein, auxin-responsive protein, and IAA-amido synthetase Gretchen Hagen3, and in response to H 2 O 2 , oxidative stress, abiotic and biotic stimuli were significantly up- or down-regulated by ex vitro treatment with 1 mM indole-3-butyric acid (IBA). Our results indicate that ex vitro rooting is an effective method to induce AR from E. excelsum plantlets during micropropagation. DEGs involved in the plant hormone signal transduction pathway played a crucial role in AR formation. H 2 O 2 , produced by environmental stimulation, might be related to AR induction as a result of the synergistic action with IBA, ultimately regulating the level of endogenous IAA." @default.
- W3205593539 created "2021-10-25" @default.
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- W3205593539 date "2021-10-20" @default.
- W3205593539 modified "2023-09-28" @default.
- W3205593539 title "Transcriptomic Analyses Provide Insight Into Adventitious Root Formation of Euryodendron Excelsum H. T. Chang During Ex Vitro Rooting" @default.
- W3205593539 doi "https://doi.org/10.21203/rs.3.rs-981177/v1" @default.
- W3205593539 hasPublicationYear "2021" @default.
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