Selenium delays leaf senescence in oilseed rape plants

Title:

Selenium delays leaf senescence in oilseed rape plants

Creator:

Rahmat, S., Hajiboland, R., and Sadeghzade, N.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:bdef3099-b7c4-409e-89e8-1757577220a8
uuid:bdef3099-b7c4-409e-89e8-1757577220a8
issn:0300-3604
doi:10.1007/s11099-016-0643-6

Subject:

nitrát reduktázy, rychlost fotosyntézy, fluorescence chlorofylu, selen, řepka olejka, leaf photochemistry, nitrate reductase, photosynthetic rate, chlorophyll fluorescence, selenium, oilseed rape, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Effect of selenium on leaf senescence was studied in oilseed rape plants treated with 10 μM Na2SeO4 at a rosette growth stage. In addition to developmental senescence, N deficiency and leaf detachment were used for induction of senescence. Nonphotochemical quenching declined in old leaves as senescence became more advancing but rose progressively in the plants supplied by Se. The total carbohydrate and protein pools decreased with leaf age, while increased by the Se treatment. However, during senescence induced by N deficiency, Se did not change remarkably the C and N metabolism, but delayed senescence mainly through protection of plants from photoinhibitory effects. After detachment, untreated leaves became chlorotic and necrotic, while the Se-treated ones remained fairly green. Our results demonstrated that Se delayed leaf senescence by a maintaining or even improving photochemical activities. During developmental senescence, the Se effect on the extending life span of the leaves was additionally linked to the metabolic regulation of senescence., S. Rahmat, R. Hajiboland, N. Sadeghzade., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

338-350

Source:

Photosynthetica | 2017 Volume:55 | Number:2

Harvested from:

CDK

Metadata only:

false