The Multifaceted Roles of HY5 in Plant Growth anc Development  

作　　者：Sreeramaiah N. Gangappa Javier F. Botto 

机构地区：[1]Department of Biological and Environmental Sciences, Gothenburg University, Gothenburg 40530, Sweden [2]IFEVA, UBA, CONICET, Facultad de Agronomia, Avenida San Martin 4453, C1417DSE Buenos Aires, Argentina [3]Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK

出　　处：《Molecular Plant》2016年第10期1353-1365,共13页分子植物（英文版）

摘　　要：ELONGATED HYPOCOTYL5 （HY5）, a member of the bZlP transcription factor family, inhibits hypocotyl growth and lateral root development, and promotes pigment accumulation in a light-dependent manner in Arabidopsis. Recent research on its role in different processes such as hormone, nutrient, abiotlc stress （abscisic acid, salt, cold）, and reactive oxygen species signaling pathways clearly places HY5 at the center of a transcriptional network hub. HY5 regulates the transcription of a large number of genes by directly binding to cis-regulatory elements. Recently, HY5 has also been shown to activate its own expression under beth visible and UV-B light. Moreover, HY5 acts as a signal that moves from shoot to root to promote nitrate uptake and root growth. Here, we review recent advances on HY5 research in diverse aspects of plant development and highlight still open questions that need to be addressed in the near future for a complete understanding of its function in plant signaling and beyond.ELONGATED HYPOCOTYL5 （HY5）, a member of the bZlP transcription factor family, inhibits hypocotyl growth and lateral root development, and promotes pigment accumulation in a light-dependent manner in Arabidopsis. Recent research on its role in different processes such as hormone, nutrient, abiotlc stress （abscisic acid, salt, cold）, and reactive oxygen species signaling pathways clearly places HY5 at the center of a transcriptional network hub. HY5 regulates the transcription of a large number of genes by directly binding to cis-regulatory elements. Recently, HY5 has also been shown to activate its own expression under beth visible and UV-B light. Moreover, HY5 acts as a signal that moves from shoot to root to promote nitrate uptake and root growth. Here, we review recent advances on HY5 research in diverse aspects of plant development and highlight still open questions that need to be addressed in the near future for a complete understanding of its function in plant signaling and beyond.

关 键 词：HY5 HY5-ort hologs transcriptional  regulation hormonal cross-talk PHOTOMORPHOGENESIS growth and development 

分 类 号：Q94[生物学—植物学]