Environmental F actors coordinate circadian clock function and rhythm to regulate plant development

Abstract

Changes in the external environment necessitate plant growth plasticity, with environmental signals such as light, temperature, and humidity regulating growth and development. The plant circadian clock is a biological time keeper that can be “reset” to adjust internal time to changes in the external environment. Exploring the regulatory mechanisms behind plant acclimation to environmental factors is important for understanding how plant growth and development are shaped and for boosting agricultural production. In this review, we summarize recent insights into the coordinated regulation of plant growth and development by environmental signals and the circadian clock, further discussing the potential of this knowledge.

Function and Characteristic Analysis of Candidate PEAR Proteins in Populus yunnanensis

“…The presence of ARE, TGA-elements, TC-rich repeats, P-box, and TGACG-motifs, which are characteristic of cis-elements involved in hormone signaling, stress response and repair, reveals the function of PEAR candidates in anaerobic induction, auxin response, defense and stress response, gibberellin, MeJA response, and salicylic acid response [37][38][39]. Other cis-elements involved in growth regulation, such as CAT-box, O2-site, MBS, G-box, LTR, circadian clock, and AT-rich elements, have also been detected, which are involved in the functions of meristem expression, zein metabolism regulation, MYB binding site of drought inducibility, MYB binding site of flavonoid light regulation, maximal elicitor-mediated activation, low-temperature response, and circadian rhythm [40,41]. On the other hand, cis-elements involved in light response, transcription regulation, stress response, growth regulation, hormone signaling, and the binding site of AT-rich DNA binding protein (ATBP-1) were found to be enriched in the candidates AtOBP2, AtHCA2, and AtPEAR1.…”