|Table of Contents|

Effects of 5-Aminolevulinic Acid (ALA) on Physiological Characteristics of Hydrangea Under Drought Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年10
Page:
63-69
Research Field:
Publishing date:

Info

Title:
Effects of 5-Aminolevulinic Acid (ALA) on Physiological Characteristics of Hydrangea Under Drought Stress
Author(s):
LONG Siyu1; LI Meng2; DENG Yating2; MAO Rongjie2; TAN Ziyi2; CAO Shoujin1
(1 College of Forestry，Central South University of Forestry and Technology，Changsha，Hunan 410004;2 College of Life Science and Technology，Central South University of Forestry and Technology，Changsha，Hunan 410004)
Keywords:
Hydrangea macrophylla; drought stress; ALA; physiological characteristics
PACS:
-
DOI:
10.11937/bfyy.20214364
Abstract:
Hydrangea macrophylla variety ‘Endless Summer’ potted plants were used as materials,the method of potted water control and foliar spraying ALA were measured to study the effects of different concentrations (0，25，50，75，100 mg?L-1)ALA on the soluble sugar content，soluble protein content，free proline(Pro) content，antioxidant enzyme (SOD，POD，CAT，APX)activities of H.macrophylla leaves，as well as malondialdehyde (MDA) content and O?2 production rate,in order to provide reference for the study of exogenous ALA to enhance the drought resistance of plants under drought stress，and to provide a feasible scheme for improving the physiological adaptability of H.macrophylla to drought stress environment.The results showed that under drought stress，H.macrophylla leaves phenotype was chlorosis，osmotic adjustment substances accumulated in a large amount，antioxidant enzyme activity was enhanced，and plant growth was inhibited.Exogenous spraying of ALA solution at a suitable concentration could significantly increase the osmotic adjustment substance content and antioxidant enzyme activity of H.macrophylla under drought stress，alleviated the damage of active oxygen，and reduced the antioxidant degree of drought stress on cell plasma membrane.Exogenous ALA could effectively alleviate the damage of drought stress to H.macrophylla and enhance the adaptability of H.macrophylla to drought stress.

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Last Update: 2022-07-04