Effects of Exegenous Glycine Betaine Treatments on Growth and Some Physiological Characteristics of Tomato under Salt Stress Condition
Abstract
The effects of the exogenous foliar application
of glycine betaine (GB) with different doses (0, 5, 10 and 20 mM) on plant
growth, chlorophyll content, stomatal conductance, phenolic and proline
contents in tomato grown under salt stress were evaluated. Tomato plants (Lycopersicon
esculentum Mill.) were imposed to salinity stress for 2 months with
75 mM NaCl. Salt stress reduced the growth, chlorophyll reading values and
stomatal conductance in tomato. GB application decreased the inhibation of salt
stress on tomato plant growth, and increased stomatal conductivity and
chlorophyll content. The effective dose of GB was 10 mM to increase tolerance
against salt stress. Plant height significantly increased in 5, 10 and 20 mM GB
treatments by 2.2, 13.1 and 18.9%, respectively compared to the control. 5 and
10 mM GB treatments significantly increased chlorophyll reading values (51.18
and 53.44, respectively) compared with control (48.92). 10 mM GB exhibited a rapid
increase in stomatal conductivity by 11.3% compared with control. Moreover, 10
mM GB showed an increase in proline content by 53.4% compared with control.
According to results of our study, it can be suggested that exogenous GB treatments
could mitigate the deleterious effects of salt stress in tomato.
Keywords
References
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Details
Primary Language
English
Subjects
-
Journal Section
Research Article
Publication Date
May 28, 2019
Submission Date
January 31, 2019
Acceptance Date
April 11, 2019
Published in Issue
Year 2019 Volume: 50 Number: 2
Cited By
Enhancing Plant Stress Resilience with Osmolytes and Nanoparticles
Journal of Soil Science and Plant Nutrition
https://doi.org/10.1007/s42729-024-01821-x