Variation in seedling vigour and camptothecin content of Pyrenacantha volubilis Wight: insights for domestication
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RESEARCH ARTICLE
Variation in seedling vigour and camptothecin content of Pyrenacantha volubilis Wight: insights for domestication Arjun Ramachandran . Ramesh Vasudeva Ramanan Uma Shaanker
. Gudasalamani Ravikanth
.
Received: 20 May 2020 / Accepted: 22 October 2020 Ó Springer Nature B.V. 2020
Abstract As a pioneering work in the field of domestication of Pyrenacantha volubilis Wight, an anti-cancer drug (camptothecin) yielding plant, this study identifies superior seed sources of southern peninsular India for various parameters related to its growth and yield. The experiment was set up following the common garden experiment protocol in Completely Randomised Design. Laboratory extraction of camptothecin from whole seeds was carried out using High Performance Liquid Chromatography.
Whereas seeds from Kizhoor population were the heaviest (test weight of 171.5 g), seedlings obtained by sowing the seeds from Villiampakkam population performed better in terms of total yield per plant (5.25 g dry weight) as well as total camptothecin yield per hectare (223.125 g). Almost three times variation was observed in the experiment between the poorest and the best performing populations. We attempt to discuss the potential for domestication, large-scale planting and sustainable harvesting of this promising and versatile new cash crop.
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10722-020-01048-6) contains supplementary material, which is available to authorized users.
Keywords Agroforestry Anti-cancer High performance liquid chromatography Icacinaceae Seed source Sustainable harvesting
A. Ramachandran (&) Department of Forest Biology and Tree Improvement, College of Forestry – Vellanikkara, Kerala Agricultural University, Thrissur, India e-mail: [email protected] R. Vasudeva Department of Forest Biology and Tree Improvement, College of Forestry – Sirsi, University of Agricultural Sciences – Dharwad, Sirsi, India G. Ravikanth Ashoka Trust for Research in Ecology and the Environment, Bengaluru, India R. U. Shaanker Department of Crop Physiology and School of Ecology and Conservation, University of Agricultural Sciences – GKVK, Bengaluru, India
Introduction With a global turnover of over two billion US dollars, camptothecin (CPT) has become the third most important anti-cancer chemotherapeutic of this century (Lorence and Nessler 2004; Shaanker et al. 2008). CPT was first isolated from Camptotheca acuminata Decne. (Icacinaceae), a tree native to China and later cultivated in the Nearctic regions. China has dominated the production and trade of CPT for several years (Wani and Wall 1969). There has been a drastic reduction in the Indian substitute source for CPT, i.e.,
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Genet Resour Crop Evol
wild populations of Nothapodytes nimmoniana J. Graham (Icacinaceae), due to the indiscriminate and unsustainable harvesting since the last two decades (Shaanker et al. 2008; Ved et al. 2016). A few potential alternate pla
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