Related Experiment Video
Updated: Aug 31, 2025

Analysis of Effect of Compound Salt Stress on Seed Germination and Salt Tolerance Analysis of Pepper Capsicum annuum L.
Published on: November 30, 2022
Basic Cognition of Melatonin Regulation of Plant Growth under Salt Stress: A Meta-Analysis
Feiyu Yan1, Hongliang Zhao1, Longmei Wu2
1School of Life Sciences and Food Engineering, Huaiyin Institute of Technology, Huai'an 223003, China.
Abstract:
Salt stress severely restricts the growth of plants and threatens the development of agriculture throughout the world. Worldwide studies have shown that exogenous melatonin (MT) can effectively improve the growth of plants under salt stress. Through a meta-analysis of 549 observations, this study first explored the effects of salt stress characteristics and MT application characteristics on MT regulated plant growth under salt stress. The results show that MT has a wide range of regulatory effects on plant growth indicators under salt stress, of which the regulatory effect on root indexes is the strongest, and this regulatory effect is not species-specific. The intensity of salt stress did not affect the positive effect of MT on plant growth, but the application effect of MT in soil was stronger than that in rooting medium. This meta-analysis also revealed that the foliar application of a concentration between 100-200 μM is the best condition for MT to enhance plant growth under salt stress. The results can inspire scientific research and practical production, while seeking the maximum improvement in plant salt tolerance under salt stress.
Related Concept Videos
Responses to Salt Stress
Regulation of Transpiration by Stomata
Responses to Heat and Cold Stress
Key Elements for Plant Nutrition
Biological Clocks and Seasonal Responses
Tonicity in Plants
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...

