Pre-treatment of bean seedlings with choline compounds increases the resistance of photosynthetic apparatus to UV-B radiation and elevated temperatures

Title:

Pre-treatment of bean seedlings with choline compounds increases the resistance of photosynthetic apparatus to UV-B radiation and elevated temperatures

Creator:

Kreslavski, V. D., Balakhnina, T. I., Khristin, M. S., and Bukhov, N. G.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:39781699-61a2-4376-83ad-aff7a870680b
uuid:39781699-61a2-4376-83ad-aff7a870680b
issn:0300-3604
doi:10.1023/A:1015174108937

Subject:

active oxygen spedies, 2-chloroethyltrimethylammonium chloride, 2-ethyltrimethylammonium chloride, heat stress, Phaseolus vulgaris, photosystem 2, and ultraviolet radiation

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Bean (Phaseolus vulgaris L. cv. Berbukskaya) seedlings were pre-treated with choline compounds, 19 mM 2-ethyltrimethylammonium chloride (Ch) or 1.6 mM 2-chloroethyltrimethylammonium chloride (CCh), during 24 h, then after 6 d the excised primary leaves were exposed to UV-B and high temperature stress. Chlorophyll (Chl) fluorescence, delayed light emission, accumulation of photosynthetic pigments, contents of thiobarbituric acid reactive substances, and activities of the active oxygen detoxifying enzymes (superoxide dismutase, ascorbate peroxidase, and glutathione reductase) were examined. Pre-treatment of plants with Ch or CCh enhanced the resistance of photosystem 2 (PS2) photochemistry to UV-B and heat injuries. The higher stress resistance can be explained by the increased activity of the detoxifying enzymes. The increased content of UV-B-absorbing pigments may also contribute to the enhanced resistance of choline-treated plants to UV-B radiation. and V. D. Kreslavski ... [et al.].

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

363-368

Source:

Photosynthetica | 2001 Volume:39 | Number:3

Harvested from:

CDK

Metadata only:

false