期刊
JOURNAL OF PLANT PHYSIOLOGY
卷 162, 期 7, 页码 771-776出版社
ELSEVIER GMBH
DOI: 10.1016/j.jplph.2005.04.008
关键词
barley; germination; tocopherol; nitric oxide; root elongation; tocochromanol
Plant seeds and fruits are the main source for tocochromanols (tocopherols and tocotrienols) collectively known as Vitamin E in human nutrition. Seeds are particularly rich in gamma-tocopherol. The reason for the abundance of gamma-tocopherol in seeds is not yet clear. We analysed the influence of endogenous gamma-tocopherols on early development of seedlings from various barley cultivars. For this purpose progression of seedling development was monitored by the mean root Length 48 h after imbibition. Our observations suggest that endogenous gamma-tocopherol has a negative impact on seedling development by controlling germination and postgermination events. We propose that gamma-tocopherol exerts its influence on seedling development by controlling the content of nitric oxide (NO) in germinating seeds. (c) 2005 Elsevier GmbH. All rights reserved.
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