Nitric oxide and HCN reduce deep dormancy of apple seeds |
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Authors: | Bogatek Renata Gniazdowska Agnieszka |
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Institution: | (1) Department of Plant Physiology, Warsaw Agricultural University, Nowoursynowska 159, 02-776 Warsaw, Poland |
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Abstract: | Nitric oxide (NO) and cyanide (HCN) are small gaseous molecules that have been intensively studied to explain their role in
plant development, metabolism and reaction to stresses. Cyanide and NO are known to be produced endogenously during early
phase of seed germination or are present in the environment. Both molecules regulate breakage of seed dormancy and accelerate
seed germination. Regulatory role of cyanide in breaking of dormancy seems to be understood to some extend, while the NO mode
of action is much less explained. However, some similarities could be suggested. The mechanisms involved in HCN-dependent
dormancy breakage in apple embryos are summarized in relation to NO-donor mediated stimulation of germination. |
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Keywords: | apple embryo cyanide germination nitric oxide seed dormancy removal |
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