Keywords: Callus culture, Histology, In vitro propagation, Plant growth regulators, Soapnut tree
The effect of plant growth regulators (PGRs), explant orientation and subculturing of callus for different passages on the callus induction and shoot differentiation in a medicinal tree Sapindus trifoliatus L. were investigated. The callus was induced from internodal explants obtained from a mature tree on MS medium containing different PGRs, i.e., 2,4-D, BAP, Kin, and zeatin. However, shoot differentiation from callus was obtained only on a medium containing BAP (0.1–3.0 mg l−1) or higher concentrations of zeatin (3.0 or 5.0 mg l−1). The highest number of shoots was obtained when the callus induced on the medium fortified with 3.0 mg l−1 BAP was transferred to a medium containing a comparatively lower concentration (1.0 mg l−1) of BAP. The orientation of the explant (i.e., horizontal or vertical) did not affect callus initiation and further shoot differentiation significantly. The subculturing of callus for different passages had a pronounced effect on shoot differentiation from the callus. The internodal callus showed 100% response for shoot differentiation and an increase in shoot numbers up to the fourth subculture; but, after that significant decline in response and shoot number. The maximum number of shoots (11.43 ± 0.79) was produced after the subculture up to the fourth passage. Thus, by adopting the approach of harvesting shoots and subculture of the remaining callus for seven passages, an average of 45 shoots per 500 mg callus culture was obtained. Maximum percent rooting in micro shoots was obtained when they were pulse-treated with 0.5 mg l−1 IBA for 24 h and transferred to a full-strength MS medium without auxins. Histological analysis revealed the well-developed apical meristem-like structure with leaf primordia during adventitious shoot bud development. The plants developed through internodal callus were established successfully in soil with a 90% survival rate.
Ahmad N, Faisal M, Anis M, Aref IM (2010) In vitro callus induction and plant regeneration from leaf explants of Ruta graveolens L. S Afr J Bot 76:597–600
Arnold SV, Sabala I, Bozhkov P, Dyachok J, Filonova L (2002) Developmental pathways of somatic embryogenesis. Plant Cell Tiss Organ Cult 69:233–249
Arora K, Sharma M, Sharma AK (2009) Control of pattern of regenerant differentiation and plantlet production from leaflet segments of Azadirachta indica A. Juss. (neem). Acta Physiol Plant 31:371–378
Arora K, Rai MK, Sharma AK (2022) Tissue culture mediated biotechnological interventions in medicinal trees: recent progress. Plant Cell Tiss Organ Cult 150:267–287
Arul B, Kothai R, Jacob P (2004) Anti-inflammatory activity of Sapindus trifoliatus Linn. J Herb Pharmacother 4:43–50
Arulmozhi DK, Sridhar N, Bodhankar SL, Veeranjaneyulu A, Arora SK (2004) In vitro pharmacological investigations of Sapindus trifoliatus in various migraine targets. J Ethnopharmacol 95:239–245
Arulmozhi DK, Veeranjaneyulu A, Bodhankar SL, Arora SK (2005) Pharmacological studies of the aqueous extract of Sapindus trifoliatus on central nervous system: possible anti migraine mechanisms. J Ethnopharmacol 97:491–496
Asthana P, Jaiswal VS, Jaiswal U (2011) Micropropagation of Sapindus trifoliatus L. and assessment of genetic fidelity of micropropagated plants using RAPD analysis. Acta Physiol Plant 33:1821–1829
Asthana P, Rai MK, Jaiswal U (2017) Somatic embryogenesis from sepal explants in Sapindus trifoliatus, a plant valuable in herbal soap industry. Ind Crop Prod 100:228–235
Asthana P, Rai MK, Jaiswal U (2023) In vitro selection, regeneration and characterization of NaCl-tolerant plants of Sapindus trifoliatus: an important multipurpose tree. Plant Cell Tiss Organ Cult 154:227–238
Asthana P, Rai MK, Jaiswal U (2024) Factors affecting the micropropagation of Sapindus trifoliatus L. from nodal explants of mature tree. Curr Biotechnol 13:58–67
Azad MAK, Yokota S, Ohkubo T, Andoh Y, Yahara S, Yoshizawa N (2005) In vitro regeneration of the medicinal woody plant Phellodendron amurense Rupr. through excised leaves. Plant Cell Tiss Organ Cult 80:43–50
Bhojwani SS, Dantu PK (2013) Plant tissue culture: an introductory text. Springer, Delhi
Centeno ML, Rodríguez A, Feito I, Fernández B (1996) Relationship between endogenous auxin and cytokinin levels and morphogenic responses in Actinidia deliciosa tissue cultures. Plant Cell Rep 16:58–62
Desai HV, Bhatt PN, Mehta AR (1986) Plant regeneration of Sapindus trifoliatus L. (soapnut) through somatic embryogenesis. Plant Cell Rep 3:190–191
Faizal A, Geelen D (2013) Saponins and their role in biological processes in plants. Phytochem Rev 12:877–893
Garcia-Luis A, Bordon N, Moreira-Dias JM, Molina RV, Guardiola JL (1999) Explant orientation and polarity determine the morphogenic response of epicotyl segments of Troyer citrange. Ann Bot 84:715–723
Garcia-Luis A, Molina RV, Varona V, Castello S, Guardiola JL (2006) The influence of explant orientation and contact with the medium on the pathway of shoot regeneration in vitro in epicotyl cuttings of Troyer citrange. Plant Cell Tiss Organ Cult 85:137–144
George EF, Hall MA, Jan De Klerk G (2008) Plant propagation by tissue culture, 3rd edn. Springer, Dordrecht
Georges D, Chenieux JC, Ochatt SJ (1993) Plant regeneration from aged callus of the woody ornamental species, Lonicera japonica cv. ‘Halls Prolific.’ Plant Cell Rep 13:91–94
Giri C, Shyamkumar B, Anjaneyulu C (2004) Progress in tissue culture, genetic transformation and applications of biotechnology to trees: an overview. Trees Struct Funct 18:115–135
Greco B, Tanzarella OA, Carrozzo G, Blanco A (1984) Callus induction and shoot regeneration in sunflower (Helianthus annuus L.). Plant Sci 36:73–77
Grover RK, Roy AD, Roy R, Joshi SK, Srivastava V, Arora SK (2005) Complete 1H and 13C NMR assignments of six saponins from Sapindus trifoliatus. Magn Reson Chem 43:1072–1076
Harry IS, Thorpe TA (1991) Somatic embryogenesis and plantlet regeneration from mature zygotic embryos of red spruce. Bot Gaz 152:446–452
Jaiswal VS, Narayan P (1985) Regeneration of plantlets from the callus of stem segments of adult plants of Ficus religiosa L. Plant Cell Rep 4:256–258
Jaiswal N, Verma Y, Misra P (2021) High frequency in vitro callogenesis and plant regeneration of Glycyrrhiza glabra L. Vegetos 34:495–504
Jimenez VM (2005) Involvement of plant hormones and plant growth regulators on in vitro somatic embryogenesis. Plant Growth Regul 47:91–110
Kalia RK, Rai MK, Sharma R, Bhatt RK (2014) Understanding Tecomella undulata: an endangered pharmaceutically important timber species of hot arid regions. Genet Resour Crop Evol 61:1397–1421
Kher MM, Nataraj M (2020) In vitro regeneration competency of Crataeva nurvala (Buch Ham) callus. Vegetos 33:52–62
Kirtikar KR, Basu BD (1999) Indian medicinal plants 1. International Book Distributors, New Delhi
Koné M, Patat-Ochatt EM, Conreux C, Sangwan RS, Ochatt SJ (2007) In vitro morphogenesis from cotyledon and epicotyl explants and flow cytometry distinction between landraces of Bambara groundnut [Vigna subterranea (L.) Verdc] an underutilised grain legume. Plant Cell Tiss Organ Cult 88:61–75
Kumlay AM, Ercisli S (2015) Callus induction, shoot proliferation and root regeneration of potato (Solanum tuberosum L.) stem node and leaf explants under long-day conditions. Biotechnol Biotechnol Equip 29:1075–1084
Litz RE, Gray DJ (1992) Organogenesis and somatic embryogenesis. In: Hammerschlag FA, Litz RE (eds) Biotechnology of perennial fruit crops. CAB International, Wallingford, pp 3–34
Litz RE, Jaiswal VS (1991) Micropropagation of tropical and subtropical fruits. In: Debergh PC, Zimmerman RH (eds) Micropropagation. Kluwer Academic Publishers, Dordrecht, pp 247–263
Mahar KS, Rana TS, Ranade SA, Meena B, Pande V, Palni SLM (2013) Estimation of genetic variability and population structure in Sapindus trifoliatus L., using DNA fingerprinting methods. Trees Struct Funct 27:85–96
McClelland MT, Smith MAL (1990) Vessel type, closure, and explant orientation influence in vitro performance of five woody species. HortScience 25:797–800
Murashige T, Skoog FA (1962) Revised medium for rapid growth and bioassays with tobacco tissue cultures. Physiol Plant 15:473–497
Naaz A, Altaf S, Naz R, Anis M, Alatar AR (2019) Successful plant regeneration system via de novo organogenesis in Syzygium cumini (L.) Skeels: an important medicinal tree. Agrofor Syst 93:1285–1295
Okello D, Yang S, Komakech R, Chung Y, Rahmat E, Gang R, Omujal F, Lamwaka AV, Kang Y (2021) Indirect in vitro regeneration of the medicinal plant, Aspilia africana, and histological assessment at different developmental stages. Front Plant Sci 12:797721
Ozudogru EA, Capuana M, Kaya E, Panis B, Lambardi M (2010) Cryopreservation of Fraxinus excelsior L. embryogenic callus by one-step freezing and slow cooling techniques. Cryo Lett 31:63–75
Pandey S, Jaiswal VS (2002) Micropropagation of Terminalia arjuna Roxb. From cotyledonary nodes. Indian J Exp Biol 40:950–953
Pena L, Seguin A (2001) Recent advances in the genetic transformation of trees. Trends Biotechnol 19:500–506
Phulwaria M, Rai MK, Harish, Gupta AK, Ram K, Shekhawat NS (2012) An improved micropropagation of Terminalia bellirica from nodal explants of mature tree. Acta Physiol Plant 34:299–305
Purohit VK, Palni LMS, Nandi SK, Rikhari HC (2002) In vitro regeneration of Quercus floribunda Lindl. through cotyledonary nodes: an important tree of central Himalaya. Curr Sci 83:312–316
Rai MK, Asthana P, Jaiswal VS, Jaiswal U (2010) Biotechnological advances in guava (Psidium guajava L.): recent developments and prospects for further research. Trees Struct Funct 24:1–12
Rajeswari V, Paliwal K (2006) In vitro propagation of Albizia odoratissima L.F. (Benth.) from cotyledonary node and leaf nodal explants. In Vitro Cell Dev Biol Plant 42:399–404
Rao MS, Purohit SD (2006) In vitro shoot bud differentiation and plantlet regeneration in Celastrus paniculatus Wild. Biol Plant 50:501–506
Rathore JS, Rai MK, Shekhawat NS (2012) Induction of somatic embryogenesis in gum arabic tree [Acacia senegal (L.) Willd.]. Physiol Mol Biol Plant 18:387–392
Reddy PS, Rodrigues R, Rajasekharan R (2001) Shoot organogenesis and mass propagation of Coleus forskohlii from leaf derived callus. Plant Cell Tiss Organ Cult 66:183–188
Safari N, Tehranifar A, Kharrazi M, Shoor M (2023) Micropropagation of endangered Iris ferdowsii Joharchi and Memariani through callus induction. Plant Cell Tiss Organ Cult 154:595–604
Sass JE (1958) Botanical Microtechnique, 3rd edn. Iowa State University Press Ames, Iowa
Savita SB, Virk GS, Nagpal AK (2011) An efficient plant regeneration protocol from callus cultures of Citrus jambhiri Lush. Physiol Mol Biol Plants 17:161–169
Shasmita, Rai MK, Naik SK (2018) Exploring plant tissue culture in Withania somnifera (L.) Dunal: in vitro propagation and secondary metabolite production. Crit Rev Biotechnol 38:836–850
Shekhawat NS, Phulwaria M, Harish, Rai MK, Kataria V, Shekhawat S, Gupta AK, Rathore NS, Vyas M, Rathore N, Vibha JB, Choudhary SK, Patel AK, Lodha D, Modi R (2012) Bioresearches of fragile ecosystem/desert. Proceed Nat Acad Sci India Sect B Biol Sci 82:319–334
Shekhawat JK, Rai MK, Shekhawat NS, Kataria V (2021) Synergism of m-topolin with auxin and cytokinin enhanced micropropagation of Maytenus emarginata. In Vitro Cell Dev Biol Plant 57:418–426
Singh R, Sharma B (2019) Pharmacological activities and medicinal implications of Sapindus spp. In: Singh R, Sharma B (eds) Biotechnological advances, phytochemical analysis and ethnomedical implications of Sapindus species. Springer, Singapore, pp 17–22
Singh R, Rai MK, Kumari N (2015) Somatic embryogenesis and plant regeneration in Sapindus mukorossi Gaertn. from leaf-derived callus induced with 6-benzylaminopurine. Appl Biochem Biotechnol 177:498–510
Souza F, Kaya E, Vieira L, Souza A, Carvalho MDJDS, Santos E, Alves A, Ellis D (2017) Cryopreservation of Hamilin sweet orange [(Citrus sinensis (L.) Osbeck)] embryogenic calli using a modified aluminum cryo-plate technique. Sci Hortic 224:302–305
Su YH, Liu YB, Zhang XS (2011) Auxin-cytokinin interaction regulates meristem development. Mol Plant 4:616–625
Szakiel A, Paczkowski C, Henry M (2011) Influence of environmental abiotic factors on the content of saponins in plants. Phytochem Rev 10:471–491
Taiz L, Zeiger E (2010) Photosynthesis: carbon reactions. Plant physiology. Sunderland, Chicago
Thakur K, Kanwar K (2018) In vitro plant regeneration by organogenesis from leaf callus of carnation; Dianthus caryophyllus L. cv. ‘master.’ Proc Natl Acad Sci India Sect B Biol Sci 88:1147–1155
Thomas TD, Philip B (2005) Thidiazuron-induced high-frequency shoot organogenesis from leaf-derived callus of a medicinal climber, Tylophora indica (Burm. F.) Merrill. In Vitro Cell Dev Biol Plant 41:124–128
Vrundha CPK, Thomas TD (2023) Indirect shoot regeneration from root explants, assessment of clonal fidelity of regenerated plants using SCoT primers and antioxidant analysis in Thottea siliquosa (Lamk.) Ding Hou. Plant Cell Tiss Organ Cult 155:255–266
Xu L, Cheng F, Zhong Y (2022) Histological and cytological study on meristematic nodule induction and shoot organogenesis in Paeonia ostii ‘Feng Dan.’ Plant Cell Tiss Organ Cult 149:609–620
Laboratory of Morphogenesis, Department of Botany, Banaras Hindu University, Varanasi, India