The Rice Circadian Clock Regulates Tiller Growth and Panicle Development Through Strigolactone Signaling and Sugar Sensing

Wang, Fang; Han, Tongwen; Song, Qingxin; Ye, Wenxue; Song, Xiaoguang; Chu, Jinfang; Li, Jiayang; Chen, Z Jeffrey

doi:10.1105/tpc.20.00289

Cited by 121 publications

(102 citation statements)

References 62 publications

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“…All these findings indicate that sugar mediates bud outgrowth through different sugar-signaling pathways, and additional investigations are needed to understand how they drive bud outgrowth individually and/or collectively. Current evidence shows crosstalk between sugars and SLs in rose, pea and rice [5,184]. In contrast, the basic regulatory mechanisms related to the sugar/CK interplay in the driving of shoot branching is still unknown.…”

Section: Shoot Branchingmentioning

confidence: 99%

“…Current evidence shows crosstalk between sugars and SLs in rose, pea and rice [ 5 , 184 ]. In contrast, the basic regulatory mechanisms related to the sugar/CK interplay in the driving of shoot branching is still unknown.…”

Section: Root and Shoot Branchingmentioning

confidence: 99%

“…Among these central regulators, sugars and cytokinins (CKs) play predominant roles while operating synergistically, antagonistically and sometimes independently to shape the final reaction of the plant. Sugars growth-related metabolic activity and as signaling entities that drive a wide array of mechanisms throughout the plant life cycle [ 1 , 2 , 3 , 4 , 5 ]. Briefly, sugar signaling is intimately linked to developmental stages, hormonal signaling and environmental conditions, and thereby is an integrative part of plant growth control [ 6 , 7 , 8 , 9 , 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

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Convergence and Divergence of Sugar and Cytokinin Signaling in Plant Development

Wang

Gourrierec

Jiao

et al. 2021

IJMS

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Plants adjust their growth and development through a sophisticated regulatory system integrating endogenous and exogenous cues. Many of them rely on intricate crosstalk between nutrients and hormones, an effective way of coupling nutritional and developmental information and ensuring plant survival. Sugars in their different forms such as sucrose, glucose, fructose and trehalose-6-P and the hormone family of cytokinins (CKs) are major regulators of the shoot and root functioning throughout the plant life cycle. While their individual roles have been extensively investigated, their combined effects have unexpectedly received little attention, resulting in many gaps in current knowledge. The present review provides an overview of the relationship between sugars and CKs signaling in the main developmental transition during the plant lifecycle, including seed development, germination, seedling establishment, root and shoot branching, leaf senescence, and flowering. These new insights highlight the diversity and the complexity of the crosstalk between sugars and CKs and raise several questions that will open onto further investigations of these regulation networks orchestrating plant growth and development.

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Section: Shoot Branchingmentioning

confidence: 99%

Section: Root and Shoot Branchingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Convergence and Divergence of Sugar and Cytokinin Signaling in Plant Development

Wang

Gourrierec

Jiao

et al. 2021

IJMS

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“…A new finding has revealed the role of circadian clock in the regulation of traits like tillering and panicle development through the SL pathway ( Strable, 2020 ; Wang F. et al, 2020 ). Two important clock regulators in rice, CIRCADIAN CLOCK ASSOCIATED1 ( OsCCA1 ) and PSEUDORESPONSE REGULATOR1 ( OsPRR1 ), are antagonistic factors of the clock component.…”

Section: Control Of Grain Number By Phytohormonesmentioning

confidence: 99%

“…Two important clock regulators in rice, CIRCADIAN CLOCK ASSOCIATED1 ( OsCCA1 ) and PSEUDORESPONSE REGULATOR1 ( OsPRR1 ), are antagonistic factors of the clock component. OsCCA1 mediates the rhythmic expression of the clock and output genes during plant growth and development, whereas OsPRR1 negatively regulates the expression of OsCCA1 ( Wang F. et al, 2020 ). The study showed that increment and reduction in OsCCA1 expression in transgenic plants decreased and increased the axillary tiller bud formation, respectively.…”

Section: Control Of Grain Number By Phytohormonesmentioning

confidence: 99%

Phytohormone-Mediated Molecular Mechanisms Involving Multiple Genes and QTL Govern Grain Number in Rice

et al. 2020

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Increasing the grain number is the most direct route toward enhancing the grain yield in cereals. In rice, grain number can be amplified through increasing the shoot branching (tillering), panicle branching, panicle length, and seed set percentage. Phytohormones have been conclusively shown to control the above characteristics by regulating molecular factors and their cross-interactions. The dynamic equilibrium of cytokinin levels in both shoot and inflorescence meristems, maintained by the regulation of its biosynthesis, activation, and degradation, determines the tillering and panicle branching, respectively. Auxins and gibberellins are known broadly to repress the axillary meristems, while jasmonic acid is implicated in the determination of reproductive meristem formation. The balance of auxin, gibberellin, and cytokinin determines meristematic activities in the inflorescence. Strigolactones have been shown to repress the shoot branching but seem to regulate panicle branching positively. Ethylene, brassinosteroids, and gibberellins regulate spikelet abortion and grain filling. Further studies on the optimization of endogenous hormonal levels can help in the expansion of the grain yield potential of rice. This review focuses on the molecular machinery, involving several genes and quantitative trait loci (QTL), operational in the plant that governs hormonal control and, in turn, gets governed by the hormones to regulate grain number and yield in rice.

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Cereal Architecture and Its Manipulation

Dixon

Esse

Hirsz

et al. 2022

Annual Plant Reviews Online

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Our lives depend on an incredibly small number of cereal species whose grain provides more calories to our diet than any other source. The extraordinary productivity of cultivated cereals reflects millennia of selection, recent directed breeding, and modern agricultural practices. Here, we examine selected architectural and agronomic features of major cereal body parts: leaf, branch, inflorescence, stem, and root; and discuss how their manipulation enhanced crop performance. Highlighting synergistic research across laboratory models and field‐based systems, we consider how diversified molecular circuitry, novel regulators and conserved components of genetic, hormonal, and molecular mechanisms control cereal architecture. Lastly, we emphasise the agricultural importance of developmental decisions during cereal growth and propose future perspectives for robust architectural improvement, made ever more urgent by our accelerating climate crisis.

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The Rice Circadian Clock Regulates Tiller Growth and Panicle Development Through Strigolactone Signaling and Sugar Sensing

Cited by 121 publications

References 62 publications

Convergence and Divergence of Sugar and Cytokinin Signaling in Plant Development

Convergence and Divergence of Sugar and Cytokinin Signaling in Plant Development

Phytohormone-Mediated Molecular Mechanisms Involving Multiple Genes and QTL Govern Grain Number in Rice

Cereal Architecture and Its Manipulation

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