ArticleThe New phytologist2026
B-GATA factors are required for nitrogen-responsive growth in Physcomitrium patens and Arabidopsis thaliana.
Article in The New phytologist, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
We hypothesized that B-GATA family transcription factors have important roles in growth regulation in moss. We analyzed B-GATA family transcription factor mutants from Physcomitrium patens and Arabidopsis thaliana to assess growth, gene expression, and cytokinin-related processes under varying nitrogen conditions. We found that nitrogen-dependent growth and transcriptional regulation are strongly impaired in mutants from Physcomitrium and Arabidopsis. We detected altered cytokinin homeostasis or signaling in the mutants, linking hormonal imbalance to growth and transcription defects. We demonstrated a conserved, critical role of B-GATAs in plant nitrogen-responsive growth. Results suggest that B-GATAs influence nitrogen-regulated transcription downstream from cytokinin, supporting an ancient, evolutionarily conserved mechanism connecting nutrient signaling to growth. We provided experimental evidence for the long-speculated but as-yet not demonstrated role of GATA transcription factors in nitrogen-dependent growth in land plants.
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