Branching Regulator BRC1 Mediates Photoperiodic Control of Seasonal Growth in Hybrid Aspen

Maurya, Jay P.; Singh, Rajesh Kumar; Miskolczi, Pál; Prasad, Amritha N.; Jonsson, Kristoffer; Wu, Feng; Bhalerao, Rishikesh P.

doi:10.1016/j.cub.2019.11.001

Cited by 55 publications

(54 citation statements)

References 23 publications

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“…In WT, marker genes for ABA were induced in SD (Fig. 3b, columns 5-7) consistently with observations in other species that ABA signalling is induced in SD and is associated with bud dormancy 17,32,[35][36][37] . By contrast, BRC1b RNAi buds displayed a reduced ABA response relative to the WT in SD (Fig.…”

Section: Potato Brc1b Prevents Aerial Bud Tuberisation To Further Ansupporting

confidence: 86%

Spatial control of potato tuberisation by the TCP transcription factor BRANCHED1b

Nicolas

Torres‐Pérez

Wahl

et al. 2020

Preprint

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The control of carbon allocation, storage and usage is critical for plant growth and development and is exploited for both crop food production and CO2 capture. Potato tubers are natural carbon reserves in the form of starch that have evolved to allow propagation and survival over winter. They form from stolons, below ground, where they are protected from cold temperatures and animal foraging. We show that BRANCHED1b (BRC1b) acts as a tuberisation repressor in aerial axillary buds, which prevents buds from competing in sink strength with stolons. BRC1b loss of function leads to ectopic production of aerial tubers and reduced underground tuberisation. In buds, BRC1b promotes dormancy, ABA signalling and downregulation of plasmodesmata gene expression. This limits sucrose unloading and access of the tuberigen factor SP6A to axillary buds. Moreover, BRC1b directly interacts with SP6A and blocks its tuber-forming activity in aerial nodes. Altogether these actions help promote tuberisation underground.

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Section: Potato Brc1b Prevents Aerial Bud Tuberisation To Further Ansupporting

confidence: 86%

Spatial control of potato tuberisation by the TCP transcription factor BRANCHED1b

Nicolas

Torres‐Pérez

Wahl

et al. 2020

Preprint

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“…Previous research has demonstrated that BRC1 physically interacts with FT2, and BRC1-FT interaction triggers growth cessation by antagonizing FT action (Maurya et al, 2020). Some studies also indicated that BRC1 interacted with FT and TSF (TWIN SISTER OF FT) to regulate the activity of florigen in axillary buds and prevented the premature flowering transformation of axillary meristems (Niwa et al, 2013;Li et al, 2019).…”

Section: Roles Of Vctcp18 Gene In the Release Of Blueberry Flower Bud Dormancymentioning

confidence: 98%

Analysis of Evolution, Expression and Genetic Transformation of TCP Transcription Factors in Blueberry Reveal That VcTCP18 Negatively Regulates the Release of Flower Bud Dormancy

Qian

et al. 2021

Front. Plant Sci.

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Plant-specific TEOSINTE BRANCHED 1, CYCLOIDEA, PROLIFERATING CELL FACTORS (TCP) transcription factors have versatile functions in plant growth, development and response to environmental stress. Despite blueberry’s value as an important fruit crop, the TCP gene family has not been systematically studied in this plant. The current study identified blueberry TCP genes (VcTCPs) using genomic data from the tetraploid blueberry variety ‘Draper’; a total of 62 genes were obtained. Using multiple sequence alignment, conserved motif, and gene structure analyses, family members were divided into two subfamilies, of which class II was further divided into two subclasses, CIN and TB1. Synteny analysis showed that genome-wide or segment-based replication played an important role in the expansion of the blueberry TCP gene family. The expression patterns of VcTCP genes during fruit development, flower bud dormancy release, hormone treatment, and tissue-specific expression were analyzed using RNA-seq and qRT-PCR. The results showed that the TB1 subclass members exhibited a certain level of expression in the shoot, leaf, and bud; these genes were not expressed during fruit development, but transcript levels decreased uniformly during the release of flower bud dormancy by low-temperature accumulation. The further transgenic experiments showed the overexpression of VcTCP18 in Arabidopsis significantly decreased the seed germination rate in contrast to the wild type. The bud dormancy phenomena as late-flowering, fewer rosettes and main branches were also observed in transgenic plants. Overall, this study provides the first insight into the evolution, expression, and function of VcTCP genes, including the discovery that VcTCP18 negatively regulated bud dormancy release in blueberry. The results will deepen our understanding of the function of TCPs in plant growth and development.

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“…FT2 downregulation results in inhibition of the expression of the downstream components LAP1 (the homologous gene of APETALA1 , a characteristic gene of Arabidopsis floral meristem) and AIL1 (the homologous gene of AINTEGUMENTA in Arabidopsis), which in turn eventually leads to growth cessation and bud formation 12 – 14 . Recent studies have shown that in addition to the CO/FT pathway, BRC1 (homologous to Arabidopsis gene BRANCHED 1 ) can form a feedback loop controlling seasonal growth in response to short days 15 (Fig. 2 ).…”

Section: Introductionmentioning

confidence: 99%

Bud endodormancy in deciduous fruit trees: advances and prospects

Yang

Gao

et al. 2021

Hortic Res

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Bud endodormancy is a complex physiological process that is indispensable for the survival, growth, and development of deciduous perennial plants. The timely release of endodormancy is essential for flowering and fruit production of deciduous fruit trees. A better understanding of the mechanism of endodormancy will be of great help in the artificial regulation of endodormancy to cope with climate change and in creating new cultivars with different chilling requirements. Studies in poplar have clarified the mechanism of vegetative bud endodormancy, but the endodormancy of floral buds in fruit trees needs further study. In this review, we focus on the molecular regulation of endodormancy induction, maintenance and release in floral buds of deciduous fruit trees. We also describe recent advances in quantitative trait loci analysis of chilling requirements in fruit trees. We discuss phytohormones, epigenetic regulation, and the detailed molecular network controlling endodormancy, centered on SHORT VEGETATIVE PHASE (SVP) and Dormancy-associated MADS-box (DAM) genes during endodormancy maintenance and release. Combining previous studies and our observations, we propose a regulatory model for bud endodormancy and offer some perspectives for the future.

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Branching Regulator BRC1 Mediates Photoperiodic Control of Seasonal Growth in Hybrid Aspen

Abstract: Highlights d BRANCHED 1 (BRC1) is a photoperiodically controlled seasonal growth regulator d BRC1 interacts with and antagonizes FLOWERING LOCUS T (FT) in hybrid aspen d BRC1 is a component of a negative feedback loop controlling seasonal growth

Cited by 55 publications

References 23 publications

Spatial control of potato tuberisation by the TCP transcription factor BRANCHED1b

Spatial control of potato tuberisation by the TCP transcription factor BRANCHED1b

Analysis of Evolution, Expression and Genetic Transformation of TCP Transcription Factors in Blueberry Reveal That VcTCP18 Negatively Regulates the Release of Flower Bud Dormancy

Bud endodormancy in deciduous fruit trees: advances and prospects

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