Plant hormones_Introduction #CSIR #DBT #GATE #NEET

A short video explaining Plant hormones, their classification and biosynthetic precursors. The plant hormones or PGR (Plant growth regulators) can be defined as small organic compounds synthesised by plant cells and tissues which are active at low concentrations and can either promote or inhibit plant growth and development. The PGR's can be classified into six main categories i.e. Auxins, cytokinins, ethylene, ABA, gibberellins and brassinosteroids. Auxins and cytokinins form a separate class from all other PGR's as both of them are important for the viability or the survival of the embryo while other PGR's are required for small developmental process only. Apart from these categories, some signalling molecules can also be classified as PGR's like Jasmonic acid, Salicylic acid and Strigolactones. Based on their biosynthetic precursors PGR's can either be formed from Amino acids (Auxins from tryptophan and Ethylene from methionine) or from lipids (Jasmonic acid from Alpha-linolenic acid) or from the isoprene units (Gibberellins, Cytokinins, ABA, brassinosteroids and Strigolcatones).

Видео Plant hormones_Introduction #CSIR #DBT #GATE #NEET канала Dr. Rishabh's Biology