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Optimization of a Liquid Culture System for Shoot Regeneration and Achieving an Enriched Level of Scopadulcic Acid B in the Leaf Organ Cultures of Scoparia dulcis L. by Response Surface Methodology

  • Gandhi PremkumarEmail author
  • Thirupathi KaruppanapandianEmail author
  • Chandran Sureshpandian
  • Neelakanda Arumugam
  • Avadayappan Selvam
  • Kaniappan Rajarathinam
Plant Development/Regeneration
  • 59 Downloads

Abstract

Response surface methodology (RSM) approach was utilized in the present investigation to optimize the constituents of Murashige and Skoog’s (MS) liquid medium to enrich the scopadulcic acid B (SDB) content in Scoparia dulcis L. RSM approach using the central composite design (CCD) was employed to identify the precise concentration of growth regulators of medium and substantiated in shake-flask cultivation. CCD-RSM model revealed a strong agreement, with a predicted coefficient of determination (R2) values of 0.881 and 0.872 for the shoot regeneration percentage (Y1) and the average number of shoots per explant (Y2), respectively. RSM predicted augmented conditions of MS liquid medium considerably influence the shoot proliferation (Y1 and Y2) in the leaf explants of S. duclis. The medium was fortified with 3.59 μM kinetin (KN; X1), 6.00 μM 6-benzylaminopurine (BAP; X2), 3.93 μM indole-3-acetic acid (IAA; X3), and 25.84 g L−1 of sucrose (X4). The present investigation conquered a maximal response of Y1 and Y2 with 91.28 ± 3.85 and 82.26 ± 2.13, respectively. The experimentally detected values are in close agreement with the predicted values of 90.07 and 79.70, respectively. This proposed that the developed design using CCD had efficacy in the optimization of medium components. The enhanced level of SDB, 9.89 ± 0.98 mg g−1 FW (ca. 5-fold), in the plantlets grown on liquid medium was significantly greater than those accomplished in the other tested plant tissues, comprises of field-grown parent plant leaves and in vitro developed callus and micropropagated plants on MS solid medium. For the first time, the methodology was developed effectively using RSM to promote the shoot proliferation and enhance the SDB production in the leaf organ culture of S. dulcis on MS liquid medium.

Keywords

CCD-RSM model Growth regulators Murashige and Skoog’s medium Scoparia dulcis Shake-flask culture 

Notes

Acknowledgments

The authors are grateful to Prof. Russell V. Lenth, Department of Statistics and Actuarial Science, The University of Iowa, USA, for assistance with R statistical programming. The authors also thank the anonymous reviewers for their constructive comments.

Funding Information

The financial support (grant reference No. MRP/3011/09) was from the University Grants Commission, New Delhi.

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Copyright information

© The Society for In Vitro Biology 2020

Authors and Affiliations

  1. 1.Department of BotanyV.H.N. Senthikumara Nadar College (Autonomous)VirudhunagarIndia
  2. 2.Department of Horticultural Science, Faculty of AgriSciencesStellenbosch UniversityStellenboschSouth Africa
  3. 3.Department of BiotechnologyPondicherry UniversityPondicherryIndia
  4. 4.Department of MathematicsV.H.N. Senthikumara Nadar College (Autonomous)VirudhunagarIndia

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