Ontogenetic changes of 2-propenyl and 3-Lndolylmethyl glucosinolates in brassica carinata leaves as affected by water supply

verfasst von

Monika Schreiner, Blen Beyene, Angelika Krumbein, Hartmut Stützel

Abstract

Concentrations of 2-propenyl and 3-indolylmethyl glucosinolates in two lines of Brassica carinata (Holeta-1 and 37-A) were assessed during the vegetative life cycle under optimal or droughtinducing water supply conditions. In the well-watered treatment, 2-propenyl and 3-indolylmethyl glucosinolate concentrations remained almost constant from the 6-8 to the 15-16 leaf stage, whereas a drought-induced water supply led to a distinct increase of these glucosinolates. Generally, the 2-propenyl concentration was higher in Holeta-1 at each leaf stage under drought stress as compared with 37-A, indicating a B. carinata line-specific drought response. The droughtinduced glucosinolate accumulation seems to be integrated in the plant's process of osmotic adjustment. It seems that under drought, there is a shift from primary to secondary metabolism, thereby promoting glucosinolate synthesis. Thus, by keeping the relative soil-water content below 80%, glucosinolate concentrations could be increased up to the 15-16 leaf stage, resulting in better plant nutritional quality of B. carinata.

Organisationseinheit(en)

Institut für Gartenbauliche Produktionssysteme

Externe Organisation(en)

Leibniz-Institut für Gemüse- und Zierpflanzenbau Großbeeren (IGZ) e.V.

Typ

Artikel

Journal

Journal of Agricultural and Food Chemistry

Band

57

Seiten

7259-7263

Anzahl der Seiten

5

ISSN

0021-8561

Publikationsdatum

26.08.2009

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Chemie (insg.), Agrar- und Biowissenschaften (insg.)

Ziele für nachhaltige Entwicklung

SDG 6 – Sauberes Wasser und sanitäre Einrichtungen

Elektronische Version(en)

https://doi.org/10.1021/jf901076h (Zugang: Geschlossen)