Osmolytes: Proline metabolism in plants as sensors of abiotic stress

Abiotic Stress in Plants

Living on the same planet, plants means a lot to us. No matter being taken, as our food or treated with great commercial significance, plants are so indispensable that we have to learn how to protect, make use of, and most important of all, get on well with them. In the first place, what we all understand is: plants are distinguished from us or other animals by being unable to escape from the s...

Abiotic Stress in Plants – Mechanisms

MicroRNAs As Potential Targets for Abiotic Stress Tolerance in Plants

The microRNAs (miRNAs) are small (20-24 nt) sized, non-coding, single stranded riboregulator RNAs abundant in higher organisms. Recent findings have established that plants assign miRNAs as critical post-transcriptional regulators of gene expression in sequence-specific manner to respond to numerous abiotic stresses they face during their growth cycle. These small RNAs regulate gene expression ...

THE EFFECT OF SALINITY STRESS ON PROLINE METABOLISM IN TWO WHEAT (TRITICUM AESTIVUM) CULTIVARS

The effect of various NaCl treatments (0, 50, 100, 200 and 300 mM) at different growth and development stages (tillering, boot swelling, flowering and polination) of two wheat cultivars (Ghods : salt-sensitive; Boolani : salt-resistant) on proline concentration and the kinetic activity of proline dehydrogenase was studied under greenhouse conditions. Generally, in response to salinity treatment...

Abiotic Stress Signaling and Responses in Plants

As sessile organisms, plants must cope with abiotic stress such as soil salinity, drought, and extreme temperatures. Core stress-signaling pathways involve protein kinases related to the yeast SNF1 and mammalian AMPK, suggesting that stress signaling in plants evolved from energy sensing. Stress signaling regulates proteins critical for ion and water transport and for metabolic and gene-express...