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

authored by

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.

Organisation(s)

Institute of Horticultural Production Systems

External Organisation(s)

Leibniz Institute of Vegetable and Ornamental Crops (IGZ)

Type

Article

Journal

Journal of Agricultural and Food Chemistry

Volume

57

Pages

7259-7263

No. of pages

5

ISSN

0021-8561

Publication date

26.08.2009

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Chemistry, General Agricultural and Biological Sciences

Sustainable Development Goals

SDG 6 - Clean Water and Sanitation

Electronic version(s)

https://doi.org/10.1021/jf901076h (Access: Closed)