caa a22 4500 445841117 CHVBK 20180317145344.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10725-010-9551-0 doi (NATIONALLICENCE)springer-10.1007/s10725-010-9551-0 Nitrite, sodium nitroprusside, potassium ferricyanide and hydrogen peroxide release dormancy of Amaranthus retroflexus seeds in a nitric oxide-dependent manner [Elektronische Daten] [Xuanyu Liu, Zhijun Deng, Hongyan Cheng, Xinhua He, Songquan Song] Nitric oxide (NO) and reactive oxygen species (ROS) are important regulators involving various processes of plant growth and development. Amaranthus retroflexus L. seeds possess a relative dormancy property that means freshly collected seeds can only germinate over a limited, high temperature range. Here, we show that the relative dormancy of A. retroflexus seeds could be significantly released following treatments with exogenous NO/cyanide (CN) donors such as nitrite, gases evolved from acidified nitrite, sodium nitroprusside (SNP), potassium ferricyanide (Fe(III)CN) and gases evolved from SNP or Fe(III)CN solutions, as well as exogenously supplied ROS, hydrogen peroxide (H2O2). However, the effectiveness varied among these chemicals. Gases evolved from acidified nitrite displayed maximum effect while H2O2 had minimum effect. We also show that the effects of these compounds could be significantly inhibited by NO specific scavenger 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide (PTIO), indicating that NO signaling pathway might play a central role in the dormancy release and germination of A. retroflexus seeds, while both ROS and CN might act through NO-dependent signaling cascades. Springer Science+Business Media B.V., 2010 Nitric oxide nationallicence Nitrite nationallicence Potassium ferricyanide nationallicence Reactive oxygen species nationallicence Seed dormancy nationallicence Sodium nitroprusside nationallicence CN : Cyanide nationallicence CRG : Coefficient of rate of germination nationallicence Fe(III)CN : Potassium ferricyanide nationallicence NO : Nitric oxide nationallicence PTIO : 2-Phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide nationallicence ROS : Reactive oxygen species nationallicence SNP : Sodium nitroprusside nationallicence Liu Xuanyu Group of Seed Physiology and Biotechnology, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, China aut Deng Zhijun Group of Seed Physiology and Biotechnology, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, China aut Cheng Hongyan Group of Seed Physiology and Biotechnology, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, China aut He Xinhua Centre for Ecosystem Management, School of Natural Resources, Edith Cowan University, 6027, Joondalup, WA, Australia aut Song Songquan Group of Seed Physiology and Biotechnology, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, China aut Plant Growth Regulation Springer Netherlands 64/2(2011-06-01), 155-161 0167-6903 64:2<155 2011 64 10725 https://doi.org/10.1007/s10725-010-9551-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10725-010-9551-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Xuanyu Group of Seed Physiology and Biotechnology, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, China aut NATIONALLICENCE 700 1- Deng Zhijun Group of Seed Physiology and Biotechnology, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, China aut NATIONALLICENCE 700 1- Cheng Hongyan Group of Seed Physiology and Biotechnology, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, China aut NATIONALLICENCE 700 1- He Xinhua Centre for Ecosystem Management, School of Natural Resources, Edith Cowan University, 6027, Joondalup, WA, Australia aut NATIONALLICENCE 700 1- Song Songquan Group of Seed Physiology and Biotechnology, Institute of Botany, the Chinese Academy of Sciences, 100093, Beijing, China aut NATIONALLICENCE 773 0- Plant Growth Regulation Springer Netherlands 64/2(2011-06-01), 155-161 0167-6903 64:2<155 2011 64 10725 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer