Flowering time regulation in crops — what did we learn from Arabidopsis?

Blümel, Martina; Dally, Nadine; Jung, Christian

doi:10.1016/j.copbio.2014.11.023

Cited by 417 publications

(375 citation statements)

References 69 publications

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“…In A. thaliana , a model LD plant, control of floral transition by endogenous (autonomous, gibberellin, circadian clock, age, sugar budget) and environmental (vernalization, ambient temperature, photoperiod) cues is a key factor in adaptation to different regions (Izawa, 2007; Bluemel et al ., 2015). The floral repressor FLC and the floral promoter CONSTANS (CO) control the florigen gene FT ; FLC and CO are key transcriptional regulators of the flowering pathways.…”

Section: Discussionmentioning

confidence: 99%

SIP1 participates in regulation of flowering time in rice by recruiting OsTrx1 to Ehd1

et al. 2018

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Summary Flowering time (heading date) in rice (Oryza sativa) is an important agronomic trait that determines yield. The levels of histone H3 lysine 4 trimethylation (H3K4me3) modulated by TRITHORAX‐like proteins regulate gene transcription, flowering time and environmental stress responses. However, plant TRITHORAX‐like proteins have no known DNA‐binding domain, and therefore the mechanism that gives sequence specificity to these proteins remains unclear.Here, we show that the rice TRITHORAX‐like protein OsTrx1 is recruited to its target, Early heading date 1 (Ehd1), by the C2H2 zinc finger protein SDG723/OsTrx1/OsSET33 Interaction Protein 1 (SIP1). SIP1 binds to the promoter of Ehd1 and interacts with OsTrx1. Mutations in SIP1 led to a late heading date under long‐day and short‐day conditions. Defects in OsTrx1 or SIP1 led to reduced H3K4me3 levels at Ehd1, thus reducing Ehd1 expression.Together, our results show that the transcription factor SIP1 interacts with OxTrx1, allowing OsTrx1 to specifically target Ehd1, altering H3K4me3 levels, increasing Ehd1 expression and thereby promoting flowering.

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Section: Discussionmentioning

confidence: 99%

SIP1 participates in regulation of flowering time in rice by recruiting OsTrx1 to Ehd1

et al. 2018

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“…Significant advances in understanding the molecular mechanisms underlying flowering time have been made, primarily from studies in Arabidopsis and rice (Shrestha et al ., 2014; Blümel et al ., 2015). By contrast, the genetic control of flowering time in maize has been less extensively studied.…”

Section: Introductionmentioning

confidence: 99%

The genetic architecture of leaf number and its genetic relationship to flowering time in maize

Wang

Zhang

et al. 2015

New Phytologist

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Summary The number of leaves and their distributions on plants are critical factors determining plant architecture in maize (Zea mays), and leaf number is frequently used as a measure of flowering time, a trait that is key to local environmental adaptation.Here, using a large set of 866 maize‐teosinte BC 2S3 recombinant inbred lines genotyped by using 19 838 single nucleotide polymorphism markers, we conducted a comprehensive genetic dissection to assess the genetic architecture of leaf number and its genetic relationship to flowering time.We demonstrated that the two components of total leaf number, the number of leaves above (LA) and below (LB) the primary ear, were under relatively independent genetic control and might be subject to differential directional selection during maize domestication and improvement. Furthermore, we revealed that flowering time and leaf number are commonly regulated at a moderate level. The pleiotropy of the genes ZCN8, dlf1 and ZmCCT on leaf number and flowering time were validated by near‐isogenic line analysis. Through fine mapping, qLA1‐1, a major‐effect locus that specifically affects LA, was delimited to a region with severe recombination suppression derived from teosinte.This study provides important insights into the genetic basis of traits affecting plant architecture and adaptation. The genetic independence of LA from LB enables the optimization of leaf number for ideal plant architecture breeding in maize.

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“…Th e process of fl owering is infl uenced by light, water, temperature, the amount of stored sugars and other nutrients, phytohormones, RNAs and microRNAs (miRNAs), among other factors (Blümel et al 2015). There is evidence suggesting that flowering may be regulated through miRNAs of the miR156 and miR172 families (Bartel et al 2004;Gandikota et al 2007;Sunkar & Zhu 2007;Chen 2008;Voinnet 2009;Wu et al 2009;Krol et al 2010;Huntzinger & Izaurralde 2011).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of miR156 and miR172 involved in the flowering of Jatropha curcas L.

et al. 2017

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Jatropha curcas is a plant that accumulates high-quality oil in its seeds, which is capable of being transformed into liquid biofuel. However, several aspects of its fl owering are still unknown, which is a key step in the production of fruits, seeds, and oil. Flowering is a complex process that is regulated by various factors at the molecular level, including microRNAs (miRNAs). Th ere is evidence suggesting that the miRNAs of the miR156 and miR172 families play a key role in the fl owering transition of plants. For this reason, the dynamics of miR156 and miR172 were studied during a production cycle of J. curcas. Our results reveal that J. curcas has a mechanism for the expression of these miRNAs that diff ers from that reported for the vast majority of angiosperms, since the expression of both families of miRNAs was positively correlated with the phenological state of J. curcas. We discuss the implications of these fi ndings and how the regulatory mechanisms of miR156 and miR172 diff er from what has been reported thus far.

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Flowering time regulation in crops — what did we learn from Arabidopsis?

Cited by 417 publications

References 69 publications

SIP1 participates in regulation of flowering time in rice by recruiting OsTrx1 to Ehd1

SIP1 participates in regulation of flowering time in rice by recruiting OsTrx1 to Ehd1

The genetic architecture of leaf number and its genetic relationship to flowering time in maize

Dynamics of miR156 and miR172 involved in the flowering of Jatropha curcas L.

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