Outcome of UV-B exposure and induction of some chlorophyll phenodeviants in two important hepatoprotective ethnomedicinal wild plants

Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Pub Email: contact@vegetosindia.org
Doi: 10.1007/s42535-021-00214-0
First Page: 700
Last Page: 708
Views: 1825

Keywords: A. paniculata , Phyllanthus niruri L., Chlorophyll phenodeviants, Mutagenic effectiveness, Mutagenic efficiency, Hepatoprotective


Present piece of work has been performed with an aim to engender genetic variations in Andrographis paniculata (Burm f.) Nees and Phyllanthus niruri L. since both plants own low or very poor genetic variations due to wild nature. A. paniculata and P. niruri both are magnificent hepatoprotective wild medicinal plants which have been used since ancient times as an ethnomedicine to cure several common and chronic ailments with the high competence and less side effects. UV-B radiations induce mutations because they are absorbed by major biomolecule predominantly by proteins and nucleic acids chiefly DNA. Owing to enormous potential as herbal medicines, both plants i.e. Andrographis and Phyllanthus have been selected for mutation breeding experiments using Ultraviolet-B radiations (UV-B) as a mutagen. When germinating seedlings of A. paniculata and P. niruri were reached up to 1–3 cm, they were treated with UV-B radiations for 0 min, 10 min, 20 min and 30 min with a recovery period of one hour at room temperature and were planted in earthen pots in triplicates. During observations, significant variations in growth and pigment content have been observed in both plants (A. paniculata and P. niruri) in a dose based manner. A wide spectrum of chlorophyll phenodeviants (chlorophyll deficient mutants) in M2 generation such as xantha, xanthoviridis, alboviridis, virscent and chlorina mutants in A. paniculata and variegated plant, xanthoviridis, xantha and albino mutants in P. niruri have also been observed. Out of all the chlorophyll mutants obtained, few were lethal hence not survived later, while rest were survived till different stages of development. On the basis of occurrence of chlorophyll phenodeviants in Andrographis and Phyllanthus, mutagenic effectiveness and efficiency of different doses of UV-B rays have been indexed. The practice of indexing of effectiveness and efficiency of any mutagen is being used for the successful execution of mutation breeding programs to find the optimum dose that may facilitate induction of a multitude of other lucrative mutations.

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Thanks are due to ‘Naithani plant genetics laboratory’ University of Allahabad and ‘Cytogenetics, plant breeding, molecular biology, and biotechnology laboratory’ Ranchi University, for providing necessary facilities and to the lab members for supporting us during work. Thanks are also due to Dr. Jai Kumar, BAU Ranchi for providing seeds of Kalmegh. One of the authors Dr. Kshama Dwivedi is highly grateful to CSIR, New Delhi for providing financial assistance as CSIR-Research Associate (RA).

Author Information

Dwivedi Kshama
Cytogenetics, Plant Breeding, Molecular Biology, and Biotechnology Laboratory, University Department of Botany, Ranchi University, Ranchi, India