Details

Autor(en) / Beteiligte

• Zhang, Hua
• Tang, Jun
• Liu, Xiao-Ping
• Wang, Yun
• Yu, Wei
• Peng, Wei-Yan
• Fang, Fang
• Ma, Dai-Fu
• Wei, Zhao-Jun
• Hu, Lan-Ying

Titel

Hydrogen Sulfide Promotes Root Organogenesis in Ipomoea batatas, Salix matsudana and Glycine max

Ist Teil von

• Journal of integrative plant biology, 2009-12, Vol.51 (12), p.1086-1094

Ort / Verlag

Melbourne, Australia: Melbourne, Australia : Blackwell Publishing Asia

Erscheinungsjahr

2009

Quelle

Wiley Backfiles (~2019)

Beschreibungen/Notizen

• In this report, we demonstrate that sodium hydrosulfide （NariS）, a hydrogen sulfide （H2S） donor, promoted adventitious root formation mediated by auxin and nitric oxide （NO）. Application of the HzS donor to seedling cuttings of sweet potato （Ipomoea batatas L.） promoted the number and length of adventitious roots in a dose-dependent manner. It was also verified that H2S or HS- rather than other sulfur-containing components derived from NariS could be attributed to the stimulation of adventitious root formation. A rapid increase in endogenous H2S, indole acetic acid （IAA） and NO were sequentially observed in shoot tips of sweet potato seedlings treated with HallS. Further investigation showed that H2S-mediated root formation was alleviated by N-1-naphthylphthalamic acid （NPA）, an IAA transport inhibitor, and 2-（4-carboxyphenyl）. 4,4,5,5-tetramethylimidazoline-1-oxyl-3-0xide （cPTIO）, an NO scavenger. Similar phenomena in H2S donor-dependent root organogenesis were observed in both excised willow （Salix matsudana var. tortuosa Vilm） shoots and soybean （Glycine max L.） seedlings. These results indicated that the process of H2S-induced adventitious root formation was likely mediated by IAA and NO, and that H2S acts upstream of IAA and NO signal transduction pathways.