10 research outputs found
Transcriptional responses of winter barley to cold indicate nucleosome remodelling as a specific feature of crown tissues
We report a series of microarray-based comparisons of gene expression in the leaf and crown of the winter barley cultivar Luxor, following the exposure of young plants to various periods of low (above and below zero) temperatures. A transcriptomic analysis identified genes which were either expressed in both the leaf and crown, or specifically in one or the other. Among the former were genes responsible for calcium and abscisic acid signalling, polyamine synthesis, late embryogenesis abundant proteins and dehydrins. In the crown, the key organ for cereal overwintering, cold treatment induced transient changes in the transcription of nucleosome assembly genes, and especially H2A and HTA11, which have been implicated in cold sensing in Arabidopsis thaliana. In the leaf, various heat-shock proteins were induced. Differences in expression pattern between the crown and leaf were frequent for genes involved in certain pathways responsible for osmolyte production (sucrose and starch, raffinose, Îł-aminobutyric acid metabolism), sugar signalling (trehalose metabolism) and secondary metabolism (lignin synthesis). The action of proteins with antifreeze activity, which were markedly induced during hardening, was demonstrated by a depression in the ice nucleation temperature
Novel Set-Up for Low-Disturbance Sampling of Volatile and Non-volatile Compounds from Plant Roots
Insight into structure dynamics of soil microbiota mediated by the richness of replanted Pseudostellaria heterophylla
Highly sensitive integrated flexible tactile sensors with piezoresistive Ge 2 Sb2Te5 thin films
Trehalose metabolism is activated upon chilling in grapevine and might participate in Burkholderia phytofirmans induced chilling tolerance
Low temperature elicits differential biochemical and antioxidant responses in maize (Zea mays) genotypes with different susceptibility to low temperature stress
Biosynthesis and Degradation of Trehalose and Its Potential to Control Plant Growth, Development, and (A)biotic Stress Tolerance
status: Published onlin