24-Epibrassinolide regulates carbohydrate metabolism and increases polyamine content in cucumber exposed to Ca(NO₃)₂ stress

KEY MESSAGE : This study focuses on the impact of carbohydrate metabolism and endogenous polyamines levels in leaves of cucumber seedlings under salt stress by exogenous BRs. The effects of 24-epibrassinolide (EBL) on carbohydrate metabolism and endogenous content of polyamines were investigated in...

Full description

Saved in:
Bibliographic Details
Published in:Acta physiologiae plantarum 2014, Vol.36 (11), p.2845-2852
Main Authors: Yuan, Lingyun, Zhu, Shidong, Li, Shuhai, Shu, Sheng, Sun, Jin, Guo, Shirong
Format: Article
Language:English
Subjects:
Agriculture
beta-fructofuranosidase
Biomedical and Life Sciences
calcium nitrate
carbohydrate metabolism
cucumbers
Cucumis sativus
enzyme activity
fructose
leaves
Life Sciences
Original Paper
Plant Anatomy/Development
Plant Biochemistry
Plant Genetics and Genomics
Plant Pathology
Plant Physiology
plasma membrane
polyamines
putrescine
salt stress
seedlings
spraying
sucrose
sucrose synthase
sucrose-phosphate synthase
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:KEY MESSAGE : This study focuses on the impact of carbohydrate metabolism and endogenous polyamines levels in leaves of cucumber seedlings under salt stress by exogenous BRs. The effects of 24-epibrassinolide (EBL) on carbohydrate metabolism and endogenous content of polyamines were investigated in cucumber seedlings (Cucumis sativus L. cv. Jinyou No. 4) exposed to salinity stress [80 mM Ca(NO₃)₂]. Spraying of exogenous EBL partially enhanced the enzyme activities of sucrose phosphate synthase, sucrose synthase and acid invertase; thus, raising the level of sucrose, fructose and total soluble sugars. The amylase activity was also increased by EBL, companied by the rising of sucrose level. These results indicated that EBL improved the carbohydrate metabolism of cucumber under Ca(NO₃)₂ stress. Moreover, EBL raised the levels of soluble conjugated and insoluble bound polyamines while lowered the free polyamines content, particularly putrescine. Our experiment demonstrated that exogenous EBL elevated stability of cellular membrane and positively improve the carbohydrate metabolism in cucumber growing under Ca(NO₃)₂ stress.
ISSN:0137-5881
1861-1664
DOI:10.1007/s11738-014-1612-y