+ 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

Growth, physiology, and transcriptional analysis of Two contrasting Carex rigescens genotypes under Salt stress reveals salt-tolerance mechanisms



Growth, physiology, and transcriptional analysis of Two contrasting Carex rigescens genotypes under Salt stress reveals salt-tolerance mechanisms



Journal of Plant Physiology 229: 77-88



Salt stress is a major abiotic stress threatening plant growth and development throughout the world. In this study, we investigated the salt stress adaptation mechanism of Carex rigescens (Franch.) V. Krecz, a stress-tolerant turfgrass species with a wide distribution in northern China. Specifically, we analyzed the growth, physiology, and transcript expression patterns of two C. rigescens genotypes (Huanghua and Lvping No.1) exposed to salt stress. Results show that Huanghua demonstrated better growth performance, and higher turf quality (TQ), photochemical efficiency (Fv/Fm), relative water content (RWC), proline content, and lower relative electrolyte leakage (REL) during seven days of salt treatment compared to Lvping No.1, suggesting that Huanghua is more salt tolerant. Significant differences in reactive oxygen species (ROS), Malondialdehyde (MDA), melatonin, non-enzymatic antioxidants, lignin, and flavonoid content, as well as in antioxidant activity between Huanghua and Lvping No.1 after salt stress indicate the diverse regulation involved in salt stress adaptation in C. rigescens. These results, combined with those of the transcript expression pattern of involved genes, suggest that Huanghua is more active and efficient in ROS scavenging, Ca2+ binding, and its phytohormone response than Lvping No.1. Meanwhile, Lvping No.1 showed relatively higher phenylpropanoid synthesis, using flavonoid and lignin as supplements for the inadequate ROS-scavenging capacity and the development of vascular tissues, respectively. These performances illustrate the differences between the two genotypes in multifaceted and sophisticated actions contributing to the tolerance mechanism of salt stress in C. rigescens. In addition, the significantly higher content of melatonin and the rapid induction of Caffeic acid O-methyltransferase (COMT) highlight the role of melatonin in the salt stress response in Huanghua. The results of our study expand existing knowledge of the complexity of the salt stress response involving the antioxidant system, Ca2+ signaling, phytohormone response signaling, and phenylpropanoid pathways. It also provides a basis for further study of the underlying mechanism of salt tolerance in C. rigescens and other plant species.

Please choose payment method:






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

Accession: 065182172

Download citation: RISBibTeXText

PMID: 30048907

DOI: 10.1016/j.jplph.2018.07.005


Related references

Salt-stress-responsive chloroplast proteins in Brassica juncea genotypes with contrasting salt tolerance and their quantitative PCR analysis. Protoplasma 253(6): 1565-1575, 2015

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

Dissecting molecular mechanisms underlying salt tolerance in rice: a comparative transcriptional profiling of the contrasting genotypes. Rice 12(1): 13, 2019

Comparative Proteomics of Contrasting Maize Genotypes Provides Insights into Salt-Stress Tolerance Mechanisms. Journal of Proteome Research 17(1): 141-153, 2017

Transcriptome Analysis of Sunflower Genotypes with Contrasting Oxidative Stress Tolerance Reveals Individual- and Combined- Biotic and Abiotic Stress Tolerance Mechanisms. Plos One 11(6): E0157522, 2017

Comparative proteomic analysis of two sesame genotypes with contrasting salinity tolerance in response to salt stress. Journal of Proteomics 2019, 2019

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

Transcriptome analysis of salt-responsive genes and SSR marker exploration in Carex rigescens using RNA-seq. Journal of Integrative Agriculture 17(1): 184-196, 2018

Comparative Transcriptional Profiling and Physiological Responses of Two Contrasting Oat Genotypes under Salt Stress. Scientific Reports 8: 16248, 2018

Comparative Physiological and Biochemical Evaluation of Salt and Nickel Tolerance Mechanisms in Two Contrasting Tomato Genotypes. Physiologia Plantarum 2019, 2019

Capacity to control oxidative stress-induced caspase-like activity determines the level of tolerance to salt stress in two contrasting maize genotypes. Acta Physiologiae Plantarum 35(1): 31-40, 2013

Comparative physiological analysis in the tolerance to salinity and drought individual and combination in two cotton genotypes with contrasting salt tolerance. Physiologia Plantarum 2018, 2018

Growth response of the salt-sensitive and the salt-tolerant sugarcane genotypes to potassium nutrition under salt stress. Archives of Agronomy and Soil Science 58(4): 385-398, 2012

Antioxidant response and Lea genes expression under salt stress and combined salt plus water stress in two wheat cultivars contrasting in drought tolerance. Indian Journal of Experimental Biology 51(9): 746-757, 2014

Compatible solute accumulation and stress-mitigating effects in barley genotypes contrasting in their salt tolerance. Journal of Experimental Botany 58(15-16): 4245-4255, 2008