外源褪黑素对镉胁迫下小麦幼苗生长生理特征及镉含量的影响

张珂; 李依; 厉萌萌; 刘德权; 刘可欣; 张凌基; 马闯

doi:10.12187/2022.04.015

August 2022

Article Contents

ZHANG Ke, LI Yi, LI Mengmeng, et al. Effects of exogenous melatonin on growth and physiological characteristics and Cd content of wheat seeding under Cd stresses[J]. Journal of Light Industry, 2022, 37(4): 111-117. doi: 10.12187/2022.04.015

Citation: ZHANG Ke, LI Yi, LI Mengmeng, et al. Effects of exogenous melatonin on growth and physiological characteristics and Cd content of wheat seeding under Cd stresses[J]. Journal of Light Industry, 2022, 37(4): 111-117. doi: 10.12187/2022.04.015 shu

Effects of exogenous melatonin on growth and physiological characteristics and Cd content of wheat seeding under Cd stresses

ZHANG Ke ^1,2 ,
LI Yi ¹ ,
LI Mengmeng ³ ,
LIU Dequan ¹ ,
LIU Kexin ¹ ,
ZHANG Lingji ¹ ,
MA Chuang ^1,2,3

1. College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, China;
2. Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou 450001, China;
3. Center International Group Co., Ltd., Beijing 100176, China

Received Date: 2021-04-28
Accepted Date: 2022-01-08

Abstract

To investigate the effects of exogenous melatonin on the growth physiology and Cd content of wheat seedling under Cd stress, the present research selected wheat seed Aikang No.58 as test material and adopted indoor culture method to study the effects of different concentrations exogenous melatonin under the stress of different Cd concentrations on the growth, physiological characteristics, and Cd absorption of wheat seedling. Results showed that under Cd stress, the addition of exogenous melatonin promoted the growth of wheat seedling to some extent. With the increase of melatonin concentration, the activities of peroxidase, catalase, and superoxide dismutase in wheat shoot tended to increase first and then decrease, while the content of malondialdehyde decreased under low concentration of Cd stress and increased under high concentration of Cd stress. Exogenous melatonin significantly decreased the Cd content in wheat root and shoot to some extent. Moreover, when the Cd concentration was 100 μmol·L^-1, the transfer coefficient of Cd in wheat seeding increased significantly, which indicated that exogenous melatonin not only reduced Cd absorption in wheat seeding, but also promoted Cd transfer in wheat seeding to some extent. However, when the Cd concentration increased, the higher concentration of melatonin had no significant effect on the transfer of Cd in wheat seeding.
- melatonin,
- Cd stress,
- wheat seedling,
- growth and physiological characteristic,
- heavy metal pollution
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Effects of exogenous melatonin on growth and physiological characteristics and Cd content of wheat seeding under Cd stresses

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