Hydrogen sulfide promotes root organogenesis in sweetpotato seedlings
(0) In this report,we demonstrate that NaHS,a hydrogen sulfide(H2S)donor and gaseous H2S aqueous solutions promote the adventitious root formation mediated by auxin and nitric oxide(NO) signaling transduction.Application with the H2S donor to seedling cuttings of sweetpotato(Ipomoea batatas)could promote the number of adventitious roots in a dose-dependent manner.It was also verified that H2S or HS-rather than other sulfur-containing components derived from NaHS attribute to the progressive role in adventitious root formation.Rapid increment of endogenous H2S,IAA and NO were sequentially observed in sweetpotato seedling after application with the exogenous H2S donor.Combined with exogenous indole acetic acid(IAA)and its inhibitor N-1-naphthylphthalamic acid(NPA),NO donor SNP and its scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide(cPTIO),further investigations showed that H2S and IAA or NO induced root formation additively；while the H2S-mediated effect was alleviated by NPA and cPTIO.These results jndicted that H2S induced adventitious root formation probably mediated by the IAA and NO pathway and acted upstream of IAA and NO signaling.
Hydrogen sulfide Indole acetic acid Nitric oxide Root organogenesis Sweetpotato(Ipomoea batatas)
Hua Zhang Long Ruan Yongkang Ye Zehua Sun Lijuan Bao Songhua Wang Jianping Luo
School of Biotechnology and Food Engineering,Hefei University of Technology,Hefei 230009,China Anhui Academy of Agricultural Sciences,Hefei 230031,China Life Science College,Anhui Science and Technology University,Bengbu 233100,China
国际会议
3rd China-Japan-Korea Workshop on Sweetpotato(第三届中日韩甘薯学术研讨会)
北京
英文
151-158
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）