Transcriptional analysis in multiple barley varieties identifies signatures of waterlogging response.

Waterlogging leads to major crop losses globally, particularly for waterlogging-sensitive crops such as barley. Waterlogging reduces oxygen availability and results in additional stresses, leading to the activation of hypoxia and stress response pathways that promote plant survival. Although certain barley varieties have been shown to be more tolerant to waterlogging than others and some tolerance-related quantitative trait loci have been identified, the molecular mechanisms underlying this trait are mostly unknown.

Expression of in the Stem Cell Domain Is Required for Its Function in the Control of Floral Meristem Activity in .

In the model plant , the zinc-finger transcription factor KNUCKLES (KNU) plays an important role in the termination of floral meristem activity, a process that is crucial for preventing the overgrowth of flowers. The gene is activated in floral meristems by the floral organ identity factor AGAMOUS (AG), and it has been shown that both AG and KNU act in floral meristem control by directly repressing the stem cell regulator (), which leads to a loss of stem cell activity. When we re-examined the expression pattern of in floral meristems, we found that is expressed throughout the center of floral meristems, which includes, but is considerably broader than the expression domain.