title: A mathematical basis for plant patterning derived from physico-chemical phenomena.
abstract: The position of leaves and flowers along the stem axis generates a specific pattern, known as phyllotaxis. A growing body of evidence emerging from recent computational modeling and experimental studies suggests that regulators controlling phyllotaxis are chemical, e.g. the plant growth hormone auxin and its dynamic accumulation pattern by polar auxin transport, and physical, e.g. mechanical properties of the cell. Here we present comprehensive views on how chemical and physical properties of cells regulate the pattern of leaf initiation. We further compare different computational modeling studies to understand their scope in reproducing the observed patterns. Despite a plethora of experimental studies on phyllotaxis, understanding of molecular mechanisms of pattern initiation in plants remains fragmentary. Live imaging of growth dynamics and physicochemical properties at the shoot apex of mutants displaying stable changes from one pattern to another should provide mechanistic insights into organ initiation patterns.
authors: School of Biology, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala, India.
authors: Thejasvi
authors: T
authors: Beleyur
authors: Valiya Kadavu
authors: VK
authors: Abdul Kareem
authors: Anil
authors: A
authors: Shaji
authors: Kalika
authors: K
authors: Prasad
mesh_terms: D017360:Arabidopsis / Q000033:anatomy & histology / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D003198:Computer Simulation; D035264:Flowers / Q000254:growth & development / Q000502:physiology; D018506:Gene Expression Regulation, Plant; D007210:Indoleacetic Acids / Q000378:metabolism; D008954:Models, Biological; D063245:Plant Development; D010937:Plant Growth Regulators / Q000378:metabolism; D018515:Plant Leaves / Q000254:growth & development / Q000502:physiology; D018521:Plant Physiological Phenomena; D010944:Plants / Q000033:anatomy & histology* / Q000235:genetics / Q000378:metabolism
chemical_list: D007210:Indoleacetic Acids; D010937:Plant Growth Regulators