Journal of Experimental Botany 58: 3047-3060 (2007)

1-Aminocyclopropane-1-carboxylic acid and abscisic acid during the germination of sugar beet (Beta vulgaris L.) - a comparative study of fruits and seeds
Katrin Hermann, Juliane Meinhard, Peter Dobrev, Ada Linkies, Bedrich Pesek, Barbara Heß, Ivana Machácková, Uwe Fischer, Gerhard Leubner-Metzger

Institute of Biology II, Botany / Plant Physiology, Albert-Ludwigs-University Freiburg, Schänzlestr. 1, D-79104 Freiburg i. Br., Germany, Web: 'The Seed Biology Place' http://www.seedbiology.de (K.H., A.L., B.H., G-L.-M.)
KWS SAAT AG, Grimsehlstr. 31, D-37555 Einbeck, Germany, Web: http://www.kws.de (J.M., U.F.)
Institute of Experimental Botany CAS, Rozvojová 263, CZ-16502 Prague 6, Czech Republic, Web: http://www.ueb.cas.cz/index_eng.htm (P.D., B.P., I.M.)

Received June 15, 2007; accepted June 25, 2007
Table 1.  Endogenous hormone contents of dry sugar beet fruit tissues. The contents of ACC, ABA, IAA, and various cytokinins in pmol per gram dry weight (DW). Note for comparison: An ABA content of 585 ± 86 pmol/g DW was measured for after-ripened seeds of the Nicotiana tabacum cultivar Havana 425.

Hormones (a) Sugar beet fruit tissues (b)
   
Seed
Pericarp
ACC 1-aminocyclopropane-1-carboxylic acid
20700 ± 200
12100 ± 1100
ABA abscisic acid
1577 ± 19
1241 ± 116
IAA indole-3-acetic acid
520 ± 43
324 ± 21
tZ trans-zeatin
46.5 ± 4.0
16.9 ± 1.4
tZR trans-Zeatin riboside
4.6 ± 0.2
7.6 ± 0.4
tZ7G trans-Zeatin glucoside
49.7 ± 0.8
1.1 ± 0.3
tZOG trans-Zeatin O-glucoside
7.3 ± 0.0
0.5 ± 0.0
cZ cis-zeatin
3.6 ± 0.5
12.1 ± 1.0
cZR cis-zeatin riboside
6.9 ± 0.4
22.1 ± 0.6
cZROG cis-zeatin riboside O-glucoside
105.6 ± 2.6
2.5 ± 0.2
IP isopentenyladenin
2.6 ± 0.1
5.1 ± 0.4
(a)   Mean values ± SE of hormone contents (pmol/g DW) of at least three independent samples prepared by dissection of 100 air-dry sugar beet fruits each
(b)   Dry sugar beet fruits were dissected into seed (embryo plus perisperm plus testa) and pericarp (includes in addition remnants of the perianth)

  



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   Abstract    Fig. 1               Fig. 2
Fig. 5               Fig. 6		 Fig. 3               Fig. 4                Tab. 1
Fig. 7               Suppl. Fig. S1
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