Compatible solute accumulation and stress-mitigating effects in barley genotypes contrasting in their salt tolerance

Journal of Experimental Botany
Zhonghua ChenSergey Shabala

Abstract

The accumulation of compatible solutes is often regarded as a basic strategy for the protection and survival of plants under abiotic stress conditions, including both salinity and oxidative stress. In this work, a possible causal link between the ability of contrasting barley genotypes to accumulate/synthesize compatible solutes and their salinity stress tolerance was investigated. The impact of H(2)O(2) (one of the components of salt stress) on K(+) flux (a measure of stress 'severity') and the mitigating effects of glycine betaine and proline on NaCl-induced K(+) efflux were found to be significantly higher in salt-sensitive barley genotypes. At the same time, a 2-fold higher accumulation of leaf and root proline and leaf glycine betaine was found in salt-sensitive cultivars. The total amino acid content was also less affected by salinity in salt-tolerant cultivars. In these, potassium was found to be the main contributor to cytoplasmic osmolality, while in salt-sensitive genotypes, glycine betaine and proline contributed substantially to cell osmolality, compensating for reduced cytosolic K(+). Significant negative correlations (r= -0.89 and -0.94) were observed between Na(+)-induced K(+) efflux (an indicator of salt toleran...Continue Reading

Citations

Oct 29, 2010·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Long QiuGuoping Zhang
May 23, 2008·Journal of Experimental Botany·Tracey Ann CuinSergey Shabala
Sep 18, 2010·Journal of Experimental Botany·Timothy David Colmer, Hank Greenway
Jan 15, 2014·Journal of Experimental Botany·Emanuela MonettiFrançois Bouteau
Feb 11, 2012·Plant Physiology and Biochemistry : PPB·Shamsul HayatAqil Ahmad
Dec 7, 2014·Plant Science : an International Journal of Experimental Plant Biology·Consuelo PenellaAngeles Calatayud
Jul 14, 2010·Plant Physiology and Biochemistry : PPB·Marina LauraMonica Mattana
Dec 29, 2009·Trends in Plant Science·László Szabados, Arnould Savouré
Apr 21, 2016·Plant Science : an International Journal of Experimental Plant Biology·Ibtissem Ben Hamed-LaoutiFrançois Bouteau
Feb 21, 2009·Plant Biology·T L FitzgeraldR J Henry
Sep 10, 2011·Plant, Cell & Environment·Diego H SanchezJoachim Kopka
Mar 29, 2014·Physiologia Plantarum·Chukwuma C OgbagaGiles N Johnson
Jun 25, 2013·Plant, Cell & Environment·Polavarapu B Kavi Kishor, Nese Sreenivasulu
Mar 28, 2016·Journal of Plant Physiology·Manuel Benlloch, María Benlloch-González
Oct 1, 2011·Biomolecular Concepts·Sergey Shabala, Lana Shabala
Oct 22, 2013·Journal of Plant Physiology·Christian ZörbEdgar Peiter
Jan 13, 2015·Plant Science : an International Journal of Experimental Plant Biology·Hui LiuZhibiao Ye

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.