title: [Effects of Ca2+ on salicylic-acid induced biosynthesis of salvianolic acid B in young seedlings of Salvia miltiorrhiza Bunge].
abstract: In order to study the effects of Ca2+ in the biosynthesis of salvianolic acid B (Sal B) induced by salicylic acid (SA) in the young seedlings of Salvia miltiorrhiza, we used confocal laser scanning microscopy and high performance liquid chromatography to measure the change of relative fluorescence intensity of Ca2+ and the contents of Sal B induced by SA before and after the application of extracellular calcium channel inhibitors (VP and LaCl3), intracellular calcium channel inhibitor (LiCl), as well as intracellular calmodulin antagonist (TFP). SA could induce the calcium burst, and the Ca2+ peak could last to 2-3 min in the guard cells of S. miltiorrhiza, which prompted the biosynthesis of Sal B after the Ca2+ burst. Both Vp or LaCl3, and LiCl or TFP could inhibit the burst of Ca2+ and the biosynthesis of Sal B. The above results demonstrated that Ca2+ from the extracellular and the intracellular calcium store regulate the biosynthesis of Sal B elicited by salicylic acid in S. miltiorrhiz young seedlings.
authors.forename: Rongrong
authors.initials: R
authors.lastname: Cao
authors.forename: Bingyu
authors.initials: B
authors.lastname: Xing
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Dang
authors.forename: Yaqin
authors.initials: Y
authors.lastname: Yao
authors.forename: Liancheng
authors.initials: L
authors.lastname: Liu
authors.forename: Juan'e
authors.initials: J
authors.lastname: Dong
mesh_terms: D001572:Benzofurans / Q000378:metabolism*; D002118:Calcium / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism; D020156:Salicylic Acid / Q000494:pharmacology*; D027561:Salvia miltiorrhiza / Q000378:metabolism*; D036226:Seedlings / Q000378:metabolism*; D015398:Signal Transduction; D053630:Depsides
chemical_list: D001572:Benzofurans; D002118:Calcium; D020156:Salicylic Acid; C076944:salvianolic acid B; D053630:Depsides