黑杨木质部汁液中有机和无机成分的季节变化

IF 1 Q3 PLANT SCIENCES

Plant Root Pub Date : 2011-01-01 DOI:10.3117/PLANTROOT.5.56

J. Furukawa, Yuta Abe, H. Mizuno, Kaoru Matsuki, Keiko Sagawa, M. Kojima, H. Sakakibara, H. Iwai, S. Satoh

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引用次数: 21

摘要

落叶乔木的茎部生长发育具有年际周期性，但对根系的年际周期性研究较少。为明确根功能的季节变化，对黑杨枝枝木质部汁液进行了为期2年的分析。木质部汁液中钙、钾、葡萄糖、蛋白质等成分呈季节性波动，在冬季至春季达到峰值。脱落酸(ABA)是木质部汁液中含量最高的激素，在深秋至春季有两个高峰。我们推测，冬季低温促进金属进入木质部汁液，促进根中蛋白质和糖的合成，以适应冬季环境，为春天发芽做准备。乙酸;吲哚-3-乙酰- l-丙氨酸;IA-Ile indole-3-acetyl-L-isoleucine;吲哚-3-乙酰-l -亮氨酸;吲哚-3-乙酰- l-天冬氨酸;IA-Trp indole-3-acetyl-L-tryptophan;吲哚- 3-乙酰- l-苯丙氨酸;GA，赤霉素酸;ABA，脱落酸

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Seasonal fluctuation of organic and inorganic components in xylem sap of Populus nigra

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. acetic acid; IA-Ala, indole-3-acetyl- L-alanine; IA-Ile, indole-3-acetyl-L-isoleucine; IA-Leu, indole-3-acetyl- L-leucine; IA-Asp, indole-3-acetyl-L-aspartic acid; IA-Trp, indole-3-acetyl-L-tryptophan; IA-Phe, indole- 3-acetyl-L-phenylalanine; GA, gibberellic acid; ABA, abscisic acid

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来源期刊

Plant Root PLANT SCIENCES-

CiteScore

1.50

自引率

0.00%

发文量

期刊介绍： Plant Root publishes original papers, either theoretical or experimental, that provide novel insights into plant roots. The Journal’s subjects include, but are not restricted to, anatomy and morphology, cellular and molecular biology, biochemistry, physiology, interactions with soil, mineral nutrients, water, symbionts and pathogens, food culture, together with ecological, genetic and methodological aspects related to plant roots and rhizosphere. Work at any scale, from the molecular to the community level, is welcomed.