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- W4221090876 abstract "As a woody plant, peony (Paeonia suffruticosa) has a long growth cycle and inefficient traditional breeding techniques. There is an urgent need in peony molecular breeding to establish an efficient and stable in vitro regeneration and genetic transformation system, in order to overcome the recalcitrant characteristics of peony regeneration and shorten the breeding cycle. The development of plant somatic embryos is an important way to establish an efficient and stable in vitro regeneration and genetic transformation system. Plant-specific WUSCHEL-related homeobox (WOX) family transcription factors play important roles in plant development, from embryogenesis to lateral organ development. Therefore, in this research, four PoWOX genes of “Fengdan” (Paeonia ostii) were cloned from the peony genome and transcriptome data of preliminary peony somatic embryos. The sequence characteristics and evolutionary relationships of the PoWOX genes were analyzed. It was demonstrated that the four PoWOX genes, named PoWOX1, PoWOX4, PoWOX11, and PoWOX13, belonged to three branches of the WOX gene family. Their expression patterns were analyzed at different stages of development and in different tissues of peony seedlings. The expression localization of the PoWOX genes was determined to be the nucleus via subcellular localization assay. Finally, the interaction protein of the PoWOX genes was identified via yeast two-hybrid assay combined with bimolecular fluorescence complementation assay. It was shown that PoWOX1 and PoWOX13 proteins could form homodimers by themselves, and PoWOX11 interacted with PoWOX1 and PoWOX13 to form heterodimers. Peony stem cell activity may be regulated from PoWOX1 and PoWOX13 by forming dimers and moving to peony stem cells through plasmodesmata. Additionally, PoWOX11–PoWOX1 and PoWOX11–PoWOX13 may play important regulatory functions in promoting the proliferation of stem cells and maintaining the homeostasis of stem cells in the SAM of peony stems. Exploring the critical genes and regulatory factors in the development of the peony somatic embryo is beneficial not only to understand the molecular and regulatory mechanisms of peony somatic embryo development but also to achieve directed breeding and improvements in efficiency through genetic engineering breeding technology to accelerate the fundamental process of molecular breeding in peony." @default.
- W4221090876 created "2022-04-03" @default.
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- W4221090876 date "2022-03-20" @default.
- W4221090876 modified "2023-09-30" @default.
- W4221090876 title "A Preliminary Investigation on the Functional Validation and Interactions of PoWOX Genes in Peony (Paeonia ostii)" @default.
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- W4221090876 doi "https://doi.org/10.3390/horticulturae8030266" @default.
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