Factors affecting in vitro cultures

In vitro cultures of plant tissues are affected by factors such as growth media, explant source, and environmental factors.

• Growth media provide essential mineral ions for plant tissue growth and morphogenesis, with commonly used media including MS medium, LS medium, B5 medium, and N6 medium.
• Plant tissue culture media contain macronutrients, micronutrients, carbon and energy sources, vitamins, myo-inositol, amino acids, organic supplements, growth regulators, and solidifying agents.
• Macronutrients include carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur, while micronutrients include iron, manganese, zinc, boron, copper, and molybdenum.
• Carbon and energy sources like sucrose, vitamins like thiamine and nicotinic acid, and amino acids are essential for plant tissue culture.
• Agar is commonly used as a solidifying agent in plant tissue culture media.
• Plant growth regulators like auxins, cytokinins, gibberellins, abscisic acid, and ethylene play roles in cell division, shoot and root formation, and growth regulation.
• Explant source, including genotype, physiological state of donor plant, weather conditions, explant size, position in donor plant, and explant density, affects tissue culture response.
• Environmental factors like lighting, temperature, oxygen gradient, and pH in culture vessels also influence in vitro cultures.
• Obtaining high frequency shoot regeneration is crucial for efficient transformation systems and clonal propagation of plants in tissue culture studies.

Researchers or sources featured

• International Association for Plant Physiology.