The negative effects of clethodim in photosynthesis and gas-exchange status of maize plants are ameliorated by salicylic acid pretreatment

Title:

The negative effects of clethodim in photosynthesis and gas-exchange status of maize plants are ameliorated by salicylic acid pretreatment

Creator:

Radwan, D. E. M. and Soltan, D. M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:0c650ac4-ac49-4223-9c4b-dab7541d683d
uuid:0c650ac4-ac49-4223-9c4b-dab7541d683d
issn:0300-3604
doi:10.1007/s11099-012-0016-8

Subject:

botanika, botany, clethodim herbicide, gas exchange, photosynthesis, pigments, proteins, salicylic acid, 2, and 58

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

In this work, the injuries caused by clethodim herbicide application as well as the use of exogenous salicylic acid (SA) as a protective agent against clethodim in Zea mays leaves were examined. Although the target for clethodim is the inhibition of acetyl coenzyme A carboxylase (ACCase) which is the key enzyme for fatty acid biosynthesis, it can indirectly affect the photosynthetic machinery, gaseous exchange and some biochemical parameters. Clethodim application caused chlorosis and yellowing of leaf-tip parts. Higher doses caused browning or reddening of leaves and sometimes dead parts of the leaf margins were observed. The rate of photosynthesis was significantly lowered and the pigments content was highly reduced as a response to clethodim spraying. Moreover, other gas-exchange properties were altered. Furthermore, accumulation of high amounts of carbohydrates, proteins and proline were detected. SA spraying three days prior clethodim application caused partially or totally disappearance of clethodim injuries and kept the leaves similar to those of control. Improved photosynthesis and enhanced pigments content were observed in leaves treated with SA. Other analyzed parameters showed values similar to those of the corresponding control. From the experimental work, an evidenced role of SA working against clethodim effects was suggested and discussed in this paper., D. E. M. Radwan, D. M. Soltan., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

171-179

Source:

Photosynthetica | 2012 Volume:50 | Number:2

Harvested from:

CDK

Metadata only:

false