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TY - JOUR AU - K.C. Ravindran, A. Indrajith, PY - 2009/10/28 Y2 - 2025/10/14 TI - Antioxidant potential of Indian medicinal plant in Phyllanthus amarus L. under supplementary UV-B radiation JF - Recent Research in Science and Technology JA - RRST VL - 1 IS - 1 SE - Articles DO - UR - https://www.updatepublishing.com/journal/index.php/rrst/article/view/293 SP - AB - <p class="MsoNormal" style="margin: 6pt 0in 12pt; line-height: 180%; text-align: justify;"><span style="font-family: ";Arial";,";sans-serif";;"><span style="font-size: small;">The stratospheric ozone depletion and enhanced solar ultraviolet-B (UV-B) irradiance may have adverse impact on living organism. The impact of UV-B radiation (UV-B, 280~320nm) on growth, biochemical and antioxidant enzymes activity was studied in <em style="mso-bidi-font-style: normal;">Phyllanthus amarus </em>(L.) seedling, commonly used as a green manure. The supplementary UV-B radiation significantly decreased the growth, development and changes in UV-B absorbing compounds such as anthocyanin and flavonoids. The antioxidant enzymes were unaffected and showed an enhanced activities in peroxidase, superoxide dismutase, Polyphenoloxidase and phenylalanine ammonia- lyase except catalase in UV-B irradiated seedling. <em style="mso-bidi-font-style: normal;">Phyllanthus amarus </em>seedling tries to counteract high level of reactive oxygen species produce under UV-B stress through the increased activities of antioxidant enzyme. We suggest that <em style="mso-bidi-font-style: normal;">Phyllanthus amarus </em>is resistant against UV-B radiation damage and the possible negative effect of additional UV-B radiation on the growth of seedling may have been effectively balanced by the UV-B radiation stress through increase in UV absorbing compound and antioxidant enzymes.</span></span></p> ER -