DIURNAL FLUCTUATIONS OF ENDOGENOUS IAA CONTENT IN ARALIA LEAVES

被引：10

作者：

LOPEZCARBONELL, M

ALEGRE, L

PRINSEN, E

VANONCKELEN, H

机构：

[1] Department of Plant Biology, Plant Physiology Unit, Faculty of Biology, University of Barcelona, Barcelona, 08028

[2] Department of Biology, University of Antwerpen (UIA), Wilrijk, Antwerpen

来源：

BIOLOGIA PLANTARUM | 1992年 / 34卷 / 3-4期

关键词：

D O I：

10.1007/BF02925873

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Diurnal variations in endogenous IAA levels in Fatsia japonica leaves, maintaining constant other external factors such as temperature and relative humidity, were studied. Plants were cultivated in a growth chamber (20-degrees-C, 75 % RH, 16 h photoperiod, 400 mumol m-1 s-1 PAR). IAA analyses were carried out by analytical IP-HPLC with on-line spectrofluorimetry. Rhythmic variation of endogenous IAA levels was found. At the onset of the light period the IAA concentration dropped very rapidly from 1070 pmol g-1 (fr.m.) to 144 pmol g-1 (fr.m.). This concentration was nearly constant throughout the entire light period. During the subsequent dark period the IAA levels increased again to about 1000 pmol g-1 (fr.m.) at the end of the dark phase. These results were not confirmed in open field conditions where many other external factors probably influence the endogenous IAA content.

引用

页码：223 / 227

页数：5

共 10 条

[1]

Araus J.L., Alegre L., Tapia L., Calafell R., Serret M.D., Relationship between photosynthetic capacity and leaf structure in several shade plants, American Journal of Botany, 73, pp. 1760-1770, (1986)

[2]

Brown B.H., Crozier A., Sandberg G., Catabolism of indol-3-acetic acid in chloroplast fractions from light-grown Pisum sativum L. seedlings, Plant Cell Environ., 9, pp. 527-534, (1988)

[3]

Carrasquer A., Casals I., Alegre L., Semi-automated method for the determination of abscisic acid in crude plant extracts, J. Chromatogr., 503, pp. 459-465, (1990)

[4]

Hart J.V., Light and Plant Growth, (1988)

[5]

Paasch K.

[6]

Ros Barcelo A., Pedreno M.A., Ferrer M.A., Sabater F., Munoz R., Indole-3-methanol is the main product of the oxidation of indole-3-acetic acid catalyzed by two cytosolic basic isoperoxidases from Lupinus, Planta, 181, pp. 448-450, (1990)

[7]

Sandberg G., Jensen E., Crozier A., Effects of light on the catabolism of [<sup>14</sup>C]-indole-3-acetic acid in protoplast, a chloroplast-rich fraction, and a crude cytoplasmatic preparation from barley (Hordeum vulgare L.), Plant, Cell and Environment, 6, pp. 111-115, (1983)

[8]

Sandberg G., Gardestrom P., Sitbon F., Olsson O., Presence of indole-3-acetic acid in chloroplasts of Nicotiana tabacum and Pinus sylvestris, Planta, 180, pp. 562-568, (1990)

[9]

Vidal D., Griera E., Marin P., Sabido J., Anatomical and physiological acclimation of Fatsia japonica leaves to irradiance, American Journal of Botany, 77, pp. 1149-1158, (1990)

[10]

Van Onckelen H.A., Prinsen E., Chiriqui D., Tepfer M., De Greef J., Endogenous auxin levels in normal and hairy root tobaco plants, Med. Fac. Landbouw. Rijksuniv. Gent, 53, pp. 1685-1693, (1988)

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