Silicon does not mitigate cell death in cultured tobacco BY-2 cells subjected to salinity without ethylene emission

	Silicon does not mitigate cell death in cultured tobacco BY-2 cells subjected to salinity without ethylene emission
	X. L. Liang; H. H. Wang; Y. F. Hu; L. N. Mao; L. L. Sun; T. Dong; W. B. Nan; Y. R. Bi
刊名	Plant Cell Reports
	2015
卷号	34 期号:2 页码:331-343
通讯作者	Bi, Y. R.
中文摘要	Silicon induces cell death when ethylene is suppressed in cultured tobacco BY-2 cells. There is a crosstalk between Si and ethylene signaling. Silicon (Si) is beneficial for plant growth. It alleviates both biotic and abiotic stresses in plants. How Si works in plants is still mysterious. This study investigates the mechanism of Si-induced cell death in tobacco BY-2 cell cultures when ethylene is suppressed. Results showed that K2SiO3 alleviated the damage of NaCl stress. Si treatment rapidly increased ethylene emission and the expression of ethylene biosynthesis genes. Treatments with Si + Ag and Si + aminooxyacetic acid (AOA, ethylene biosynthesis inhibitor) reduced the cell growth and increased cell damage. The treatment with Si + Ag induced hydrogen peroxide (H2O2) generation and ultimately cell death. Some nucleus of BY-2 cells treated with Si + Ag appeared TUNEL positive. The inhibition of H2O2 and nitric oxide (NO) production reduced the cell death rate induced by Si + Ag treatment. Si eliminated the up-regulation of alternative pathway by Ag. These data suggest that ethylene plays an important role in Si function in plants. Without ethylene, Si not only failed to enhance plant resistance, but also elevated H2O2 generation and further induced cell death in tobacco BY-2 cells.
内容类型	期刊论文
源URL	[http://159.226.123.10/handle/131322/6558]
专题	东北地理与农业生态研究所_合作研究组_期刊论文
推荐引用方式 GB/T 7714	X. L. Liang,H. H. Wang,Y. F. Hu,et al. Silicon does not mitigate cell death in cultured tobacco BY-2 cells subjected to salinity without ethylene emission[J]. Plant Cell Reports,2015,34(2):331-343.
APA	X. L. Liang.,H. H. Wang.,Y. F. Hu.,L. N. Mao.,L. L. Sun.,...&Y. R. Bi.(2015).Silicon does not mitigate cell death in cultured tobacco BY-2 cells subjected to salinity without ethylene emission.Plant Cell Reports,34(2),331-343.
MLA	X. L. Liang,et al."Silicon does not mitigate cell death in cultured tobacco BY-2 cells subjected to salinity without ethylene emission".Plant Cell Reports 34.2(2015):331-343.