文章基本信息

标题：Seasonal fluctuation of organic and inorganic components in xylem sap of Populus nigra
本地全文：下载
作者：Jun Furukawa ; Yuta Abe ; Hiroaki Mizuno 等
期刊名称：Plant Root
电子版ISSN：1881-6754
出版年度：2011
卷号：5
页码：56-62
DOI：10.3117/plantroot.5.56
出版社：Japan Science and Technology Information Aggregator, Electronic
摘要：Deciduous trees show annual periodicity in shoot growth and development, but such periodicity is not well investigated in roots. To clarify the seasonal fluctuation in root functions, xylem sap from Populus nigra branches was analyzed for 2 years. Various xylem sap components including calcium, potassium, glucose, and proteins showed seasonal fluctuations with peaks from winter to spring. Abscisic acid (ABA) was the most abundant hormone in the xylem sap throughout all seasons and showed two peaks from late autumn to spring. We hypothesize that low temperature in winter promotes metal loading into the xylem sap and the synthesis of proteins and sugars in roots as an adaptation to the winter environment and to prepare for spring bud burst.
关键词：calcium;glucose;poplar (Populus nigra);protein;winter;xylem sap