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Verbascoside production in long-term Buddleja cordata Kunth cell suspension cultures.
3 Biotech ( IF 2.8 ) Pub Date : 2020-05-11 , DOI: 10.1007/s13205-020-02222-4
H Arano-Varela 1 , F J Fernández 1 , M E Estrada-Zúñiga 2 , F Cruz-Sosa 1
Affiliation  

Previously, our group reported the establishment of a white callus cell line of Buddleja cordata Kunth that is a high producer of the secondary metabolite, verbascoside (VB, also named acteoside), under suspension culture conditions. Here, we present experimental evidence of the sustained ability of that cellular line to grow and produce high amounts of VB for 5 years of continuous culture. Cellular line profiles were determined at the early (at the beginning) and late stages (at the end of 5 years of continuous subculturing) by analyzing relevant parameters of culture growth, i.e., specific growth rate [µ], doubling time [dt], and growth index [GI], as well as VB production. Late-stage cultures exhibited a 61% faster growth rate than early-stage subcultures, and 25 and 3% lower doubling time and growth index. The extents of growth phases were found to be different. Similar amounts of biomass were found (9.5 g and 9.4 g L-1). Verbascoside production increased parallel to cell growth; maximal yield level occurred in the mid-exponential phase and lasted until the end of the stationary phase (i.e., from the 15th to the 25th day and from the 9th to the 21st day for the early and late stages, correspondingly). The content of VB was higher in the late-stage culture (1.43 ± 0945 g L-1) than in the early-stage culture (1.21 ± 0.0286 g L-1). Productivity values point out the potential use of B. cordata cell line in the biotechnological production of VB and for research focused on the biochemistry of secondary metabolism.

中文翻译:

在长条醉鱼草(Buddleja cordata Kunth)细胞悬浮培养物中生产马齿bas甙。

先前,我们的研究小组报道了在悬浮培养条件下建立了Buddleja cordata Kunth的白色愈伤组织细胞系,该细胞系是次生代谢产物Verbascoside(VB,也称为acteoside)的高产量。在这里,我们提供了该细胞系持续培养5年连续生长并产生大量VB的持续能力的实验证据。通过分析培养物生长的相关参数,即比生长率[µ],倍增时间[dt],在早期(开始)和晚期(连续传代5年结束时)确定细胞系概况。和增长指数[GI]以及VB产量。晚期培养物的生长速度比早期亚培养物快61%,倍增时间和生长指数分别降低25%和3%。发现生长阶段的程度不同。发现相似量的生物质(9.5 g和9.4 g L-1)。马鞭草苷的生产与细胞生长平行增加;最大产量水平出现在指数中期,并一直持续到平稳期结束(即,早期和晚期分别从第15天到25天以及从第9天到21天)。后期培养(1.43±0945 g L-1)中的VB含量高于早期培养(1.21±0.0286 g L-1)中的VB含量。生产力值指出了脐带芽孢杆菌细胞系在VB的生物技术生产中的潜在用途,并用于研究次生代谢的生物化学。最大产量水平出现在指数中期,并一直持续到平稳期结束(即,早期和晚期分别从第15天到25天以及从第9天到21天)。后期培养(1.43±0945 g L-1)中的VB含量高于早期培养(1.21±0.0286 g L-1)中的VB含量。生产率值指出了脐带芽孢杆菌细胞系在VB的生物技术生产中的潜在用途,并用于研究次生代谢的生物化学。最大产量水平出现在指数中期,并一直持续到平稳期结束(即,早期和晚期分别从第15天到25天以及从第9天到21天)。后期培养(1.43±0945 g L-1)中的VB含量高于早期培养(1.21±0.0286 g L-1)中的VB含量。生产率值指出了脐带芽孢杆菌细胞系在VB的生物技术生产中的潜在用途,并用于研究次生代谢的生物化学。43±0945 g L-1)比早期培养的(1.21±0.0286 g L-1)高。生产力值指出了脐带芽孢杆菌细胞系在VB的生物技术生产中的潜在用途,并用于研究次生代谢的生物化学。43±0945 g L-1)比早期培养的(1.21±0.0286 g L-1)高。生产力值指出了脐带芽孢杆菌细胞系在VB的生物技术生产中的潜在用途,并用于研究次生代谢的生物化学。
更新日期:2020-05-11
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