建伟 潘;睦元 朱;Hong Chen
Zhejiang University
发表时间:2001
期 刊:Environmental and Experimental Botany
语 言:English
U R L: http://www.scopus.com/inward/record.url?scp=0034802943&partnerID=8YFLogxK
Aluminum-induced cell death was investigated in root-tip cells of barley (Hordeum vulgare). The growth of roots in 0.1-50 mM Al treatments was inhibited after 8 h treatments, and could not be recovered after 24 h recovery culture without Al. Viable detection with fluorescein diacetate-propidium iodide (FDA-PI) staining shows that most of the root-tip cells have lost viability. These results suggest that the irreversible inhibition of root growth after 8 h Al treatments or 24 h recovery culture is mainly caused by cell death. DNA ladders occurred in root tips only after 8 h Al treatments (0.1-1.0 mM), but no apoptotic bodies in root tips were observed. Thus, the cell death caused by Al stress is likely to be Al-induced programmed cell death (PCD). The reactive oxygen species (ROS) in root-tip cells measured by ultraweak luminescence indicated that the oxidation status in root-tip cells basically ceased after exposure to 10-50 mM Al for 24 h, but was very violent in the root-tip cells treated with 0.1-1.0 mM for 24 h. Exposure to 0.1-1.0 mM Al for 3-12 h led to ROS burst. Therefore, our results suggest that 0.1-1.0 mM Al treatments for 8 h induce cell death (Al-induced PCD) possibly via a ROS-activated signal transduction pathway, whereas 10-50 mM Al treatments may cause necrosis in the root-tip cells. These results have an important role for further studies on the mechanism of Al toxicity in plants.
地球与环境科学
农业与生物学
Scopus度量
年份 | CiteScore | SJR | SNIP |
---|---|---|---|
1996 | |||
1997 | |||
1998 | |||
1999 | 0.295 | 0.497 | |
2000 | 0.4 | 0.57 | |
2001 | 0.485 | 0.779 | |
2002 | 0.543 | 1.172 | |
2003 | 0.644 | 1.131 | |
2004 | 0.84 | 1.381 | |
2005 | 0.773 | 1.417 | |
2006 | 0.827 | 1.5 | |
2007 | 0.796 | 1.152 | |
2008 | 0.963 | 1.521 | |
2009 | 1.169 | 1.994 | |
2010 | 1.46 | 1.913 | |
2011 | 5 | 1.079 | 1.86 |
2012 | 5.5 | 1.137 | 1.936 |
2013 | 5.5 | 1.09 | 1.586 |
2014 | 6.3 | 1.138 | 1.914 |
2015 | 7 | 1.34 | 1.751 |
2016 | 7.9 | 1.491 | 1.867 |
2017 | 7.6 | 1.376 | 1.642 |
2018 | 6.4 | 1.235 | 1.488 |
2019 | 6.2 | 1.213 | 1.494 |
2020 | 7.3 | ||
2021 |
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