Arabidopsis Transcription Factor TCP5 Controls Plant Thermomorphogenesis by Positively Regulating PIF4 Activity

Han, Xiaowei; Yu, Hao; Yuan, Rongrong; Yang, Yan; An, Fengying; Qin, Genji

doi:10.1016/j.isci.2019.04.005

Cited by 90 publications

(82 citation statements)

References 56 publications

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“…The PIF class of transcription factors has been extensively implicated in thermomorphogensis. PIF4 in particular is regulated at multiple levels in response to temperature, transcriptionally via temperature-dependent EC activity [4][5][6] , and posttranslationally via the activity of phytochromes 7,8 as well as through interaction with other transcriptional regulators such as EARLY FLOWERING 3 (ELF3) 42 , HMR 15 and TCP transcription factors 43,44 . Furthermore, PIF activity is increased in response to the phytohormone gibberellin (GA), mediated via the degradation of inhibitory DELLA proteins 45,46 , and GA levels are themselves influenced by temperature 28 .…”

Section: Discussionmentioning

confidence: 99%

An RNA thermoswitch regulates daytime growth in Arabidopsis

et al. 2020

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Temperature is a major environmental cue affecting plant growth and development. Plants often experience higher temperatures in the context of a 24 h day-night cycle, with temperatures peaking in the middle of the day. Here we find that the transcript encoding the bHLH transcription factor PIF7 undergoes a direct increase in translation in response to warmer temperature. Diurnal expression of PIF7 transcript gates this response, allowing PIF7 protein to quickly accumulate in response to warm daytime temperature. Enhanced PIF7 protein levels directly activate the thermomorphogenesis pathway by inducing the transcription of key genes such as the auxin biosynthetic gene YUCCA8, and are necessary for thermomorphogenesis to occur under warm cycling daytime temperatures. The temperature-dependent translational enhancement of PIF7 mRNA is mediated by the formation of an RNA hairpin within its 5' UTR, which adopts an alternative conformation at higher temperature, leading to increased protein synthesis. We identified similar hairpin sequences that control translation in additional transcripts including WRKY22 and the key heat shock regulator HSFA2, suggesting this is a conserved mechanism enabling plants to respond and adapt rapidly to high temperatures.

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Section: Discussionmentioning

confidence: 99%

An RNA thermoswitch regulates daytime growth in Arabidopsis

et al. 2020

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“…Transcription factors play vital roles in plant growth and development and many transcription factors have been identified to be involved in a series of progresses responding to abiotic and biotic stresses and signaling networks of plant hormones [37][38][39][40][41][42][43][44][45][46][47][48][49]. The annotation and structure analysis of many transcription factors in different plant species had been reported [50][51][52][53][54][55].…”

Section: Discussionmentioning

confidence: 99%

Genome-Wide Analysis of the Shi-Related Sequence Family and Functional Identification of GmSRS18 Involving in Drought and Salt Stresses in Soybean

Zhao

Song

Guo

et al. 2020

IJMS

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The plant-special SHI-RELATED SEQUENCE (SRS) family plays vital roles in various biological processes. However, the genome-wide analysis and abiotic stress-related functions of this family were less reported in soybean. In this work, 21 members of soybean SRS family were identified, which were divided into three groups (Group I, II, and III). The chromosome location and gene structure were analyzed, which indicated that the members in the same group may have similar functions. The analysis of stress-related cis-elements showed that the SRS family may be involved in abiotic stress signaling pathway. The analysis of expression patterns in various tissues demonstrated that SRS family may play crucial roles in special tissue-dependent regulatory networks. The data based on soybean RNA sequencing (RNA-seq) and quantitative Real-Time PCR (qRT-PCR) proved that SRS genes were induced by drought, NaCl, and exogenous abscisic acid (ABA). GmSRS18 significantly induced by drought and NaCl was selected for further functional verification. GmSRS18, encoding a cell nuclear protein, could negatively regulate drought and salt resistance in transgenic Arabidopsis. It can affect stress-related physiological index, including chlorophyll, proline, and relative electrolyte leakage. Additionally, it inhibited the expression levels of stress-related marker genes. Taken together, these results provide valuable information for understanding the classification of soybean SRS transcription factors and indicates that SRS plays important roles in abiotic stress responses.

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“…In the model plant Arabidopsis , the CIN-like TCPs include eight members which are further grouped into two clades based on the existence of microRNA (miRNA) binding site outside the sequence encoding TCP domain. TCP2 , TCP3 , TCP4 , TCP10, and TCP24 have the miRNA binding sites and post-transcriptionally regulated by miR319 [ 13 ], while TCP5, TCP13 and TCP17 form a small clade named as TCP5-like CIN-TCPs that were proved to be important for plant thermomorphogenesis ( Figure 2 ) [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

The Regulation of CIN-like TCP Transcription Factors

Lan

Qin

2020

IJMS

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TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL FACTOR 1 and 2 (TCP) family proteins are the plant-specific transcription factors extensively participating in diverse developmental processes by integrating external cues with internal signals. The roles of CINCINNATA (CIN)-like TCPs are conserved in control of the morphology and size of leaves, petal development, trichome formation and plant flowering. The tight regulation of CIN-like TCP activity at transcriptional and post-transcriptional levels are central for plant developmental plasticity in response to the ever-changing environmental conditions. In this review, we summarize recent progresses with regard to the function and regulation of CIN-like TCPs. CIN-like TCPs are regulated by abiotic and biotic cues including light, temperature and pathogens. They are also finely controlled by microRNA319 (miRNA319), chromatin remodeling complexes and auxin homeostasis. The protein degradation plays critical roles in tightly controlling the activity of CIN-like TCPs as well.

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Arabidopsis Transcription Factor TCP5 Controls Plant Thermomorphogenesis by Positively Regulating PIF4 Activity

Cited by 90 publications

References 56 publications

An RNA thermoswitch regulates daytime growth in Arabidopsis

An RNA thermoswitch regulates daytime growth in Arabidopsis

Genome-Wide Analysis of the Shi-Related Sequence Family and Functional Identification of GmSRS18 Involving in Drought and Salt Stresses in Soybean

The Regulation of CIN-like TCP Transcription Factors

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