Aux/IAA proteins are a family of short-lived transcriptional repressors that play a crucial role in the auxin signaling pathway, regulating plant development and growth. They function by interacting with ARF transcription factors and are degraded via the ubiquitin-proteasome pathway in the presence of auxin, allowing for gene expression changes in response to auxin levels.

Aux/IAA Proteins

Transcriptional Repressors

The auxin signaling pathway is a crucial mechanism in plants that regulates growth and development by modulating gene expression in response to the plant hormone auxin. This pathway involves the perception of auxin by receptor proteins, leading to the degradation of repressor proteins and the activation of transcription factors that control specific gene networks.

Auxin Signaling Pathway

Plant development is the process by which plants grow and differentiate, involving a series of genetically programmed stages influenced by environmental factors. This complex process encompasses cellular division, expansion, and differentiation to form the structures necessary for survival and reproduction.

Plant Development

Plant growth is a complex process influenced by genetic, environmental, and physiological factors, resulting in the increase in size, mass, and number of plant cells. It involves a series of developmental stages including germination, vegetative growth, flowering, and fruiting, each requiring specific conditions for optimal progression.

Plant Growth

ARF transcription factors are a group of proteins in plants that regulate gene expression by binding to auxin response elements in the promoters of target genes, playing a crucial role in the plant's response to the hormone auxin. They are essential for various developmental processes, including cell division, elongation, and differentiation, influencing growth patterns and responses to environmental stimuli.

ARF Transcription Factors

The ubiquitin-proteasome pathway is a crucial cellular mechanism responsible for degrading and recycling proteins, thus regulating protein homeostasis and controlling various cellular processes. It involves tagging unwanted or damaged proteins with ubiquitin molecules, which are then recognized and degraded by the proteasome, a large proteolytic complex.

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