+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Regulation of some carbohydrate metabolism-related genes, starch and soluble sugar contents, photosynthetic activities and yield attributes of two contrasting rice genotypes subjected to salt stress



Regulation of some carbohydrate metabolism-related genes, starch and soluble sugar contents, photosynthetic activities and yield attributes of two contrasting rice genotypes subjected to salt stress



Protoplasma 250(5): 1157-1167



Soluble carbohydrates play a key role as osmolytes and significantly contribute in salt defence mechanism, especially in halophyte species. The objective of this study is to investigate the transcriptional expression of starch-related genes, sugar profile and physiological performances of two contrasting rice genotypes, Pokkali (salt tolerant) and IR29 (salt sensitive), in response to salt stress. Total soluble sugars, glucose and fructose levels in the flag leaf of salt-stressed Pokkali rice were enhanced relative to soluble starch accumulation in plants exposed to EC = 13.25 dS m(-1) (salt stress) for 3 days. In Pokkali, the net photosynthetic rate and starch metabolism may play a key role as energy resources under salt stress. In contrast, photosynthetic performance, indicated by photosynthetic pigment levels and chlorophyll fluorescence parameters, in salt-stressed IR29 was significantly reduced, leading to delayed starch biosynthesis. The reduction in photosynthetic ability and lack of defence mechanisms in IR29 caused growth inhibition and yield loss. Soluble starch and soluble sugar enrichment in Pokkali rice may function alternatively as osmotic adjustment in salt defence mechanism and strengthen carbon energy reserves, greater survival prospects under salt stress and enhanced productivity.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 055453852

Download citation: RISBibTeXText

PMID: 23558902

DOI: 10.1007/s00709-013-0496-9


Related references

Regulation of some salt defense-related genes in relation to physiological and biochemical changes in three sugarcane genotypes subjected to salt stress. Protoplasma 252(1): 231-243, 2016

Changes in activities of antioxidant enzymes and photosynthetic attributes in triticale (X Triticosecale Wittmack) genotypes in response to long-term salt stress at two distinct growth stages. Acta Physiologiae Plantarum 37(4): 72, 2015

Alteration of oxidative and carbohydrate metabolism under abiotic stress in two rice (Oryza sativa L.) genotypes contrasting in chilling tolerance. Journal of Plant Physiology 164(2): 157-167, 2006

Comparative proteomic and physiological characterisation of two closely related rice genotypes with contrasting responses to salt stress. Functional Plant Biology 42(6): 527-542, 2015

Activities of enzymes involved in sucrose-to-starch metabolism in rice grains subjected to water stress during filling. Field Crops Research 81(1): 69-81, 10 February, 2003

Comprehensive analysis of differentially expressed genes and transcriptional regulation induced by salt stress in two contrasting cotton genotypes. Bmc Genomics 15(): 760-760, 2015

Accumulation of trehalose increases soluble sugar contents in rice plants conferring tolerance to drought and salt stress. Plant Biotechnology Reports 6(1): 89-96, 2012

Physiological studies on salt tolerance of rice genotypes yield and yield attributes. Indian Journal of Plant Physiology 30(3): 308-310, 1987

Transcriptome Analysis of Two Rice Varieties Contrasting for Nitrogen Use Efficiency under Chronic N Starvation Reveals Differences in Chloroplast and Starch Metabolism-Related Genes. Genes 9(4): -, 2018

Transcriptional regulations of the genes of starch metabolism and physiological changes in response to salt stress rice (Oryza sativa L.) seedlings. Physiology and Molecular Biology of Plants 18(3): 197-208, 2013

Effect of incident solar radiation on photosynthetic rate and growth and yield attributes in rice genotypes. Effect of incident solar radiation on photosynthetic rate and growth and yield attributes in rice genotypes:, 1977

Comparative transcriptome and translatome analysis in contrasting rice genotypes reveals differential mRNA translation in salt-tolerant Pokkali under salt stress. Bmc Genomics 19(Suppl 10): 935-935, 2019

Leaf gas exchange, carbon isotope discrimination, and grain yield in contrasting rice genotypes subjected to water deficits during the reproductive stage. Journal of Experimental Botany 60(8): 2325-2339, 2009

Effects of water stress on growth and yield attributes of aman rice genotypes. International Journal of Sustainable Crop Production 2(6): 25-30, 2007

Responses of Contrasting Rice (Oryza sativa L.) Genotypes to Salt Stress as Affected by Nutrient Concentrations. Agricultural Sciences in China 10(2): 195-206, 2011