Inhibition of root respiration induces leaf senescence in Alhagi sparsifolia

Title:

Inhibition of root respiration induces leaf senescence in Alhagi sparsifolia

Creator:

Tang, G.-L., Li, X.-Y., Lin, L.-S., Hu, Y., and Zeng, F.-J.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:9ea02109-89d2-4618-be44-c6ee5ed4a42f
uuid:9ea02109-89d2-4618-be44-c6ee5ed4a42f
issn:0300-3604
doi:10.1007/s11099-016-0674-z

Subject:

obecná botanika, sacharidy, chlorofyl, general botany, carbohydrates, chlorophyll, girdling, phloem transport, photosynthetic pigment, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Leaf senescence can be induced by numerous factors. In order to explore the relationship between root respiration and leaf senescence, we utilized different types of phloem girdling to control the root respiration of Alhagi sparsifolia and its physiological response. Our results showed that both girdling and inhibition of root respiration led to a decline of stomatal conductance, photosynthesis, transpiration rate, chlorophyll (Chl) a, Chl b, carotenoid (Car) content, Chl a/b, Chl/Car, water potential, and Chl a fluorescence, as well as to an increase of abscisic acid (ABA), proline, and malondialdehyde content in leaves and to upregulation of senescence-associated gene expression. Our present work implied that both inhibition of root respiration and girdling can induce leaf senescence. In comparison with phloem girdling, the leaf senescence caused by inhibition of root respiration was less significant. The reason for girdling-induced senescence was ABA and carbohydrate accumulation. Senescence induced by inhibition of root respiration occurred due to leaf water stress resulting from inhibition of water absorption., G.-L. Tang, X.-Y. Li, L.-S. Lin, Y. Hu, F.-J. Zeng., and Obsahuje seznam literatury

Language:

Multiple languages

Rights:

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

Coverage:

588-602

Source:

Photosynthetica | 2017 Volume:55 | Number:4

Harvested from:

CDK

Metadata only:

false