Barley plants over-expressing the NAC transcription factor gene HvNAC005 show stunting and delay in development combined with early senescence.

ABSTRACT: The plant-specific NAC transcription factors have attracted particular attention because of their involvement in stress responses, senescence, and nutrient remobilization. The HvNAC005 gene of barley encodes a protein belonging to subgroup NAC-a6 of the NAC family. This study shows that HvNAC005 is associated with developmental senescence. It was significantly up-regulated following ABA treatment, supported by ABA-responsive elements in its promoter, but it was not up-regulated during dark-induced senescence. The C-termini of proteins closely related to HvNAC005 showed overall high divergence but also contained conserved short motifs. A serine- and leucine-containing central motif was essential for transcriptional activity of the HvNAC005 C-terminus in yeast. Over-expression of HvNAC005 in

SUBMITTER: Christiansen MW 

PROVIDER: S-EPMC5014165 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature