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<p><i>Beta vulgaris</i> is a versatile and economically important crop, which is rich in terpenoids and plays an important role in the growth and development of <i>B. vulgaris</i> and in response to stress. The 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) is the key rate-limiting enzyme in the first step in the synthesis of the terpenoid, the cytosolic mevalonate pathway, but no HMGR gene family has been reported in <i>B. vulgaris</i> so far. Genome-wide analysis of the HMGR (<i>BvHMGR</i>) gene family in <i>B. vulgaris</i> resulted in the identification of only one HMGR gene, which was classified into four subfamilies by phylogenetic analysis together with a total of 80 HMGR gene family members from eleven other species, which was verified by conserved motif and gene structure analysis. Cis-regulatory elements (CREs), co-lineage analysis, and gene expression profiling showed that <i>BvHMGR</i> was distributed in a high gene density region on chromosome 9, with subcellular localization in the endoplasmic reticulum and high lipid solubility. Its secondary structures primarily consist of α-helices, extended chains, and random coils. Currently, no gene duplication events were detected, and the kinship was slightly closer to dicotyledonous plants. In addition, qRT-PCR results showed that <i>BvHMGR</i> exhibited time-scale-dependent buffered expression under both methyl jasmonate (MeJA) and abscisic acid (ABA) treatments in abiotic stresses represented by high salt and drought, contributing a new idea for resistance enhancement in cultivated beet.</p>

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Genome-Wide Identification of the 3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase (HMGR) Gene Family Members and Expression Analysis Under Abiotic Stress and Hormone Treatments in Yellow Beet (Beta vulgaris L.)

  • 期刊论文

  • 发表日期：

    2026年4月11日

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  • Wentao He,
  • Naixin Liu,
  • Qin Zhou,
  • Yanan Liu

摘要

Beta vulgaris is a versatile and economically important crop, which is rich in terpenoids and plays an important role in the growth and development of B. vulgaris and in response to stress. The 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) is the key rate-limiting enzyme in the first step in the synthesis of the terpenoid, the cytosolic mevalonate pathway, but no HMGR gene family has been reported in B. vulgaris so far. Genome-wide analysis of the HMGR (BvHMGR) gene family in B. vulgaris resulted in the identification of only one HMGR gene, which was classified into four subfamilies by phylogenetic analysis together with a total of 80 HMGR gene family members from eleven other species, which was verified by conserved motif and gene structure analysis. Cis-regulatory elements (CREs), co-lineage analysis, and gene expression profiling showed that BvHMGR was distributed in a high gene density region on chromosome 9, with subcellular localization in the endoplasmic reticulum and high lipid solubility. Its secondary structures primarily consist of α-helices, extended chains, and random coils. Currently, no gene duplication events were detected, and the kinship was slightly closer to dicotyledonous plants. In addition, qRT-PCR results showed that BvHMGR exhibited time-scale-dependent buffered expression under both methyl jasmonate (MeJA) and abscisic acid (ABA) treatments in abiotic stresses represented by high salt and drought, contributing a new idea for resistance enhancement in cultivated beet.