Different responses of young and expanded lettuce leaves to fungicide Mancozeb: chlorophyll fluorescence, lipid peroxidation, pigments and proline content

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Dias, MC (Author) Other; Figueiredo, P (Author) Other; Duarte, IF (Author) Other; Gil, AM (Author) Other; Santos, C (Author) Other

Journal

Title: Photosynthetica

Vol. 52

Pages: 148-151

ISSN: 0300-3604

Publisher: Akademie Ved Ceske Republiky

Indexing

ISI Web of Knowledge - 17 Citations

Scopus - 20 Citations

Other information

Authenticus ID: P-009-6WM

DOI: 10.1007/s11099-014-0016-y

Abstract (EN): This work aimed to study the effects of commercial doses of the fungicide, Mancozeb, on the photosynthetic apparatus of lettuce young leaves (YL) and expanded leaves (EL). Seven days after Mancozeb application, chlorophyll a fluorescence, pigment contents, lipid peroxidation, and proline content were evaluated. Independently of leaf age, Mancozeb treatment reduced the efficiency of photosystem II photochemistry, increased the nonphotochemical quenching and proline content, decreased pigment contents, and induced lipid peroxidation. Moreover, EL showed a more stable photosynthetic apparatus, less prone to oxidative damages compared with YL. The parameters measured proved to be good markers for the rapid and preliminary diagnosis of fungicide toxicity.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4