LEAD ACCUMULATION AND TOXICITY IN PEANUT (ARACHIS HYPOGAEA L.) SEEDLINGS

Dogan M., Akgul H., Tozlu I.

FRESENIUS ENVIRONMENTAL BULLETIN, cilt.22, sa.8, ss.2350-2356, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 22 Sayı: 8
  • Basım Tarihi: 2013
  • Dergi Adı: FRESENIUS ENVIRONMENTAL BULLETIN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2350-2356
  • Anahtar Kelimeler: Peanut, lead toxicity, biochemical changes, oxidative stress, GROWTH
  • Akdeniz Üniversitesi Adresli: Evet

Özet

Effects of different Pb concentrations (0, 10, 100 and 1000 mg/L) in peanut (Arachis hypogaea L.) seedlings were investigated by means of determining the amount of photosynthetic pigments, malondialdehyde (MDA), protein and proline at whole plant level. Rising external Pb concentrations resulted in elevated tissue Pb accumulations. A dose-dependent reduction was determined on the amount of chl-a, chl-b and carotenoid contents of leaves. While the proline contents of root and leaf tissues were increased, that in stem tissues was decreased, in response to elevated Pb concentration in the growth medium. Negative correlation was found between tissue Pb accumulation and protein content in roots, stems and leaves. On the other hand, correlation was found to be positive between Pb accumulations and MDA contents in all tissues examined. These results suggest a possible Pb-induced oxidative stress in peanut tissues.

Abstract

Effects of different Pb concentrations (0, 10, 100 and 1000 mg/L) in peanut (Arachis hypogaea L.) seedlings were investigated by means of determining the amount of photosynthetic pigments, malondialdehyde (MDA), protein and proline at whole plant level. Rising external Pb concentrations resulted in elevated tissue Pb accumulations. A dose-dependent reduction was determined on the amount of chl-a, chl-b and carotenoid contents of leaves. While the proline contents of root and leaf tissues were increased, that in stem tissues was decreased, in response to elevated Pb concentration in the growth medium. Negative correlation was found between tissue Pb accumulation and protein content in roots, stems and leaves. On the other hand, correlation was found to be positive between Pb accumulations and MDA contents in all tissues examined. These results suggest a possible Pb-induced oxidative stress in peanut tissues.