Effects of Exogenous Melatonin on Growth and Antioxidant System of Lettuce Seedlings under Salt Stress

DOI

10.2991/icammce-18.2018.17How to use a DOI?

Keywords

Melatonin, Lettuce, Salt stress, Growth, Antioxidant enzyme activity

Abstract

The glass lettuce was made as material, the effect of different concentrations (0, 50, 100, 150, 200 μmol·L-1) of exogenous melatonin on growth, antioxidant enzyme activity and osmotica of lettuce seedlings under salt stress was studied. The results showed that the root length, stem diameter, and dry fresh weight of lettuce sprayed with melatonin were higher than those of the control. Within a certain concentration range, the activities of antioxidant enzymes POD, SOD and CAT increased with the increase of melatonin concentration. The soluble protein content increased but the MDA content decreased, which maintaining the balance of intracellular reactive oxygen metabolism and preventing membrane lipid peroxidation. Therefore, spraying the exogenous melatonin could increase the resistance of lettuce to salt stress, and the best effect was obtained when the concentration was 100 μmol·L-1.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yongdong Xie
AU  - Guochao Sun
AU  - Huiping Liao
AU  - Yi Tang
PY  - 2018/05
DA  - 2018/05
TI  - Effects of Exogenous Melatonin on Growth and Antioxidant System of Lettuce Seedlings under Salt Stress
BT  - Proceedings of the 2018 3rd International Conference on Advances in Materials, Mechatronics and Civil Engineering (ICAMMCE 2018)
PB  - Atlantis Press
SP  - 77
EP  - 80
SN  - 2352-5401
UR  - https://doi.org/10.2991/icammce-18.2018.17
DO  - 10.2991/icammce-18.2018.17
ID  - Xie2018/05
ER  -