title: Strigolactone signaling in root development and phosphate starvation.
abstract: Strigolactones (SLs), have recently been recognized as phytohormone involve in orchestrating shoot and root architecture. In, roots SLs positively regulate root hair length and density, suppress lateral root formation and promote primary root meristem cell number. The biosynthesis and exudation of SLs increases under low phosphate level to regulate root responses. This hormonal response suggests an adaptation strategy of plant to optimize growth and development under nutrient limitations. However, little is known on signal-transduction pathways associated with SL activities. In this review, we outline the current knowledge on SL biology by describing their role in the regulation of root development. Also, we discuss the recent findings on the non-cell autonomous signaling of SLs, that involve PIN polarization, vesicle trafficking, changes in actin architecture and dynamic in response to phosphate starvation.
authors.affiliation: a Institute of Plant Sciences; Agricultural Research Organization (ARO); the Volcani Center ; Bet Dagan , Israel.
authors.forename: Manoj
authors.initials: M
authors.lastname: Kumar
authors.forename: Nirali
authors.initials: N
authors.lastname: Pandya-Kumar
authors.forename: Yoram
authors.initials: Y
authors.lastname: Kapulnik
authors.forename: Hinanit
authors.initials: H
authors.lastname: Koltai
mesh_terms: D000199:Actins / Q000378:metabolism; D007783:Lactones / Q000378:metabolism*; D010710:Phosphates / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism; D018517:Plant Roots / Q000254:growth & development* / Q000378:metabolism*; D015398:Signal Transduction
chemical_list: D000199:Actins; D007783:Lactones; D010710:Phosphates; D010940:Plant Proteins
keywords: PIN2 polarization; Strigolactone; actin; phosphate; vesicle trafficking