Together with TGA9, basic leucine-zipper transcription factor required for anther development, probably via the activation of SPL expression in anthers and via the regulation of genes with functions in early and middle tapetal development (PubMed:20805327). Required for signaling responses to pathogen-associated molecular patterns (PAMPs) such as flg22 that involves chloroplastic reactive oxygen species (ROS) production and subsequent expression of H(2)O(2)-responsive genes (PubMed:27717447). Homodimer (PubMed:16731568). Binds DNA as a dimer (By similarity). Interacts with floral glutaredoxins GRXC7/ROXY1 and GRXC8/ROXY2 in the nucleus (PubMed:20805327). Interacts with TGA1, TGA2, TGA3, TGA4, TGA5, TGA6, TGA7, TGA9 and PAN (PubMed:16731568). Additional isoforms seem to exist. Expressed at low levels in inflorescence apex and flowers. During anther development, accumulates in anther primordia during archesporial cell specification and later present in a horseshoe pattern associated with the lateral and adaxial portion of primordia, prior to the emergence of distinct locules. Expressed throughout sporogenic tissue and surrounding cells layers in adaxial and adaxial locules. Localized to the tapetum and middle layers, gradually fading postmeiosis with degeneration of these cell layers. Strongly induced by flg22 in leaves. In the double mutant tga9 tga10, reduced male fertility due to defects in male gametogenesis, with early steps in anther development blocked in adaxial lobes and later steps affected in abaxial lobes. Microspore development in abaxial anther lobes leads to the production of inviable pollen grains contained within nondehiscent anthers. In addition, multiple defects in the anther dehiscence program are observed, including abnormal stability and lignification of the middle layer and defects in septum and stomium function. Reduced SPL levels in anthers (PubMed:20805327). Increased sensitivity to flg22 treatment associated with a lack of chloroplastic H(2)O(2)-responsive genes; this phenotype is enhanced in the double mutant tga9 tga10 (PubMed:27717447). Belongs to the bZIP family.