title: Inhibition of tomato (Solanum lycopersicum L.) root growth by cyanamide is due to altered cell division, phytohormone balance and expansin gene expression.
abstract: Cyanamide (CA) has been reported as a natural compound produced by hairy vetch (Vicia villosa Roth.) and it was shown also to be an allelochemical, responsible for strong allelopathic potential in this species. CA phytotoxicity has been demonstrated on various plant species, but to date little is known about its mode of action at cellular level. Treatment of tomato (Solanum lycopersicum L.) roots with CA (1.2 mM) resulted in inhibition of growth accompanied by alterations in cell division, and imbalance of plant hormone (ethylene and auxin) homeostasis. Moreover, the phytotoxic effect of CA was also manifested by modifications in expansin gene expression, especially in expansins responsible for cell wall remodeling after the cytokinesis (LeEXPA9, LeEXPA18). Based on these results the phytotoxic activity of CA on growth of roots of tomato seedlings is likely due to alterations associated with cell division.
authors: Department of Plant Physiology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776, Warsaw, Poland.
authors: Dorota
authors: D
authors: Soltys
authors: Anna
authors: A
authors: Rudzińska-Langwald
authors: Agnieszka
authors: A
authors: Gniazdowska
authors: Anita
authors: A
authors: Wiśniewska
authors: Renata
authors: R
authors: Bogatek
mesh_terms: D002455:Cell Division / Q000187:drug effects; D003484:Cyanamide / Q000494:pharmacology*; D005030:Ethylenes / Q000378:metabolism; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D007210:Indoleacetic Acids / Q000378:metabolism; D018551:Solanum lycopersicum / Q000187:drug effects* / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D010937:Plant Growth Regulators / Q000378:metabolism*; D010940:Plant Proteins / Q000235:genetics*; D018517:Plant Roots / Q000166:cytology / Q000187:drug effects / Q000235:genetics / Q000254:growth & development*; D036226:Seedlings / Q000166:cytology / Q000187:drug effects / Q000254:growth & development
chemical_list: D005030:Ethylenes; D007210:Indoleacetic Acids; D010937:Plant Growth Regulators; D010940:Plant Proteins; D003484:Cyanamide; C036216:ethylene