Exploring in vitro oryzalin-induced polyploidy in Astragalus membranaceus: implications for gene expression

IF 2.3 3区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Josef Baltazar Šenkyřík, Božena Navrátilová, Barbora Fišerová, Lucie Kobrlová, Vladan Ondřej
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Abstract

This study investigates the effects of artificial in vitro polyploidisation of Astragalus membranaceus, focusing specifically on gene expression and metabolic pathway associated with the biosynthesis of calycosin and calycosin-7-O-β-D-glucoside. Using oryzalin as an antimitotic agent, we have systematically investigated different genotypic lines, under both in vitro and ex vitro conditions. Amid cases of reduced gene expression in certain lines, results showed a significant upregulation in specific lines, particularly in genotypes 16, 54, and 74. Genotype 54 showed an exceptional response, manifesting a statistically significant upregulation in all investigated genes studied under in vitro conditions (i.e. AmPAL, AmC4H and AmI3H). Interestingly, even under ex vitro conditions after two years of greenhouse cultivation, certain lines showed significant variations in gene expression. The genotype 16, although no longer tetraploid, exhibited the highest expression levels among the examined genotypes, with statistically significant upregulation of both the AmPAL and AmC4H genes. In addition, the induced autotetraploid genotype 74 showed a significant upregulation of the AmI3′H gene and a concomitant downregulation of the AmC4H gene. These results highlight the complex regulatory mechanisms affected by the polyploidisation of A. membranaceus and provide promising avenues for manipulating gene expression to enhance the production of pharmacologically significant compounds.

Key message

This study investigates the effects of artificial polyploidisation on gene expression of Astragalus membranaceus, suggesting diverse regulatory influences for potential plant bioactive compound production.

Abstract Image

探索体外麦角苷诱导的膜荚黄芪多倍体:对基因表达的影响
摘要 本研究调查了膜荚黄芪人工体外多倍体化的影响,特别关注与钙苷和钙苷-7-O-β-D-葡萄糖苷的生物合成相关的基因表达和代谢途径。我们使用奥利唑啉作为抗拮抗剂,在体外和体外条件下对不同的基因型品系进行了系统研究。在某些品系基因表达减少的情况下,结果显示特定品系的基因表达显著上调,尤其是基因型 16、54 和 74。基因型 54 的反应尤为突出,在体外条件下,所有研究基因(即 AmPAL、AmC4H 和 AmI3′H)都出现了统计学意义上的显著上调。有趣的是,即使在温室栽培两年后的离体条件下,某些品系的基因表达也出现了明显变化。基因型 16 虽然不再是四倍体,但在所考察的基因型中表现出最高的表达水平,其中 AmPAL 和 AmC4H 基因的上调具有统计学意义。此外,诱导的自交四倍体基因型 74 表现出 AmI3′H 基因的显著上调和 AmC4H 基因的同时下调。这些结果突显了膜荚黄芪多倍体化所影响的复杂调控机制,并为操纵基因表达以提高药理活性化合物的生产提供了有前景的途径。
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来源期刊
Plant Cell, Tissue and Organ Culture
Plant Cell, Tissue and Organ Culture 生物-生物工程与应用微生物
CiteScore
5.40
自引率
13.30%
发文量
203
审稿时长
3.3 months
期刊介绍: This journal highlights the myriad breakthrough technologies and discoveries in plant biology and biotechnology. Plant Cell, Tissue and Organ Culture (PCTOC: Journal of Plant Biotechnology) details high-throughput analysis of gene function and expression, gene silencing and overexpression analyses, RNAi, siRNA, and miRNA studies, and much more. It examines the transcriptional and/or translational events involved in gene regulation as well as those molecular controls involved in morphogenesis of plant cells and tissues. The journal also covers practical and applied plant biotechnology, including regeneration, organogenesis and somatic embryogenesis, gene transfer, gene flow, secondary metabolites, metabolic engineering, and impact of transgene(s) dissemination into managed and unmanaged plant systems.
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