Micropropagation of gerbera: lipid peroxidation and antioxidant enzyme activities during acclimatization process

• Autorzy: Chakrabarty D. , Datta S. K.
• Języki publikacji: EN

Abstrakty

EN

Gerbera jamesonii H. Bolus ex Hook (Family: Asteraceae) has been successfully acclimatized from temperate to subtropical North Indian plains of Lucknow through in vitro propagation. Flower heads were collected from greenhouse, segmented into 4–16 pieces and cultured in Murashige and Skoog’s medium (MS) (Physiol Plant 15:472–497, 1962) supplemented with 2.87 μM indole- 3-acetic acid (IAA) and 8.88 μM N6-benzyladenine (BA) for shoot regeneration. Shoots were subcultured on growth regulator free MS medium. Apical shoot meristems from in vitro plantlets of gerbera were tested in MS medium with different combination of cytokinins [BA, kinetin, and thidiazuron (TDZ)] alongwith 2.68 μM 1-naphthaleneacetic acid (NAA) for shoot multiplication. The optimum results were obtained with 8.88 μM BA. Regenerated plants with well-established root system were transferred to pots containing soil and sand (1:1 v/v) and were kept in humidity chamber with 80–90% relative humidity for 0, 5, 10, 15, 20, and 25 days before they were transferred to field (during October, 2005 to February, 2006). Survival percentage was higher when regenerated plantlets were kept under humidity chamber for 15 days. An attempt was made to obtain basic information on different biochemical changes during acclimatization process of in vitro raised plantlets. Increased lipid peroxidation and high H2O2 content in early stages of acclimatization process reflected a similar process of oxidative stress. Our work suggests that tissue-cultured plants develop antioxidant enzymatic protective system which determine the ability to survive in oxidative stress and up regulation of these enzymes would help to reduce the built up of reactive oxygen species (ROS).

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2008
• Tom: 30
• Numer: 3
• Opis fizyczny: p.325-331,fig.,ref.

Twórcy

autor

Chakrabarty D.

• Floriculture Section, National Botanical Research Institute, Lucknow, Uttar Pradesh, India

autor

Datta S. K.

• Floriculture Section, National Botanical Research Institute, Lucknow, Uttar Pradesh, India

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