The similar and different evolutionary trends of MATE family occurred between rice and Arabidopsis thaliana.

Background: Multidrug and toxic compound extrusion (MATE) transporter proteins are present in all organisms. Although the functions of some MATE gene family members have been studied in plants, few studies have investigated the gene expansion patterns, functional divergence, or the effects of positive selection.

Results: Forty-five MATE genes from rice and 56 from Arabidopsis were identified and grouped into four subfamilies.

Intronic promoter-mediated feedback loop regulates bean PvSR2 gene expression.

Intronic promoter usage is a widespread regulatory mechanism for increasing the diversity of gene expression regulation. However, its trans-acting mechanisms that modulate host gene expression are poorly characterized. We previously showed that bean (Phaseolus vulgaris) stress-related gene 2 (PvSR2) produces a metal-responsive element (MRE)-binding transcription factor (PvMTF-1) by using an intronic promoter.

Bean metal-responsive element-binding transcription factor confers cadmium resistance in tobacco.

Cadmium (Cd) is highly toxic to plants. Modulation of Cd-responsive transcription is an important way for Cd detoxification in plants. Metal-responsive element (MRE) is originally described in animal metallothionein genes.