Quantitative Proteomics Analysis reveals Proteins related with high melatonin content in barley seeds under NaCl-induced salt stress

ABSTRACT: Increase soil salinization is affecting hull-less barley cultivation in the Qinghai-Tibet Plateau of China. Under saline conditions wild hull-less barley seeds showed high melatonin (MEL) accumulation during germination with improve salt tolerance. Hence, the present study aimed to understand the proteome level changes that result in high melatonin content in the germinating hull-less barley seed after treatment with 240mM-NaCl concentrations compared to control. Our results indicate that salt stress induced global changes in the proteome of germinating barley seeds. The NaCl treatment altered the expression and abundance of several proteins related to carbohydrate and energy metabolism, amino acid transport and metabolism which contributed to the high melatonin content in the seeds under salt stress. Further, proteins associated with cellular redox homeostasis, osmotic stress response and secondary metabolites derived from amino acid metabolism, including purine degradation, and shikimate pathways were induced in seeds with high melatonin content. Consequently, triggering a robust response to the oxidative stress occasioned by the NaCl-induced salt stress and lead to improved germination rate and salt stress adaptation in hull-less barley seeds. Overall our finding contribute to our understanding of the mechanism of melatonin mediated salt stress tolerance in barley at the protein level.

ORGANISM(S): Hordeum Vulgare

SUBMITTER: Guoqiang Zhang  

PROVIDER: PXD030029 | iProX | Mon Nov 29 00:00:00 GMT 2021

REPOSITORIES: iProX