Sugar promotes vegetative phase change in Arabidopsis thaliana by repressing the expression of MIR156A and MIR156C

Yang, Li; Xu, Mingli; Koo, Yeonjong; He, Jia; Poethig, R. Scott

doi:10.7554/elife.00260

Cited by 290 publications

(370 citation statements)

References 55 publications

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“…In Arabidopsis, vegetative phase change from juvenile to adult leaves is characterized by increased leaf complexity, including the formation of abaxial trichomes and serrated margins. This transition is delayed in defoliated plants and in photosynthetic mutants (Yang et al, 2013;Yu et al, 2013;Buendía-Monreal and Gillmor, 2017), supporting the view that sugar produced in photosynthesis is involved. Under low sugar availability, high miR156 abundance prevents the transition from juvenile to adult leaves, whereas sugar supply represses the transcription of MIR156 genes and promotes phase change (Yang et al, 2013;Yu et al, 2013).…”

Section: Juvenile-to-adult Phase Transitionsupporting

confidence: 70%

Transitioning to the Next Phase: The Role of Sugar Signaling throughout the Plant Life Cycle

Wingler

2017

Plant Physiol.

132

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Section: Juvenile-to-adult Phase Transitionsupporting

confidence: 70%

Transitioning to the Next Phase: The Role of Sugar Signaling throughout the Plant Life Cycle

Wingler

2017

Plant Physiol.

132

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“…The relationship between metabolic efficiency and flowering phenotypes is in line with recent evidence for a connection between metabolism, via the sucrose signal metabolite trehalose 6-phosphate and the CO-FT photoperiod floral pathway 55 . This relationship is further supported by recently discovered links between metabolism and the transition to maturity, which is a prerequisite for flowering [55][56][57] . A link between metabolic efficiency and defence-related phenotypes may not be apparent in our analyses, due to either the experimental design or the possibility that defence response may be induced rather than constitutively related to metabolism.…”

Section: Discussionmentioning

confidence: 58%

Metabolic efficiency underpins performance trade-offs in growth of Arabidopsis thaliana

et al. 2014

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Growth often involves a trade-off between the performance of contending tasks; metabolic plasticity can play an important role. Here we grow 97 Arabidopsis thaliana accessions in three conditions with a differing supply of carbon and nitrogen and identify a trade-off between two tasks required for rosette growth: increasing the physical size and increasing the protein concentration. We employ the Pareto performance frontier concept to rank accessions based on their multitask performance; only a few accessions achieve a good trade-off under all three growth conditions. We determine metabolic efficiency in each accession and condition by using metabolite levels and activities of enzymes involved in growth and protein synthesis. We demonstrate that accessions with high metabolic efficiency lie closer to the performance frontier and show increased metabolic plasticity. We illustrate how public domain data can be used to search for additional contending tasks, which may underlie the sub-optimality in some accessions. L iving organisms perform many different and sometimes contending tasks, leading to trade-offs in which optimal performance of one task comes at the cost of a sub-optimal performance of another task. Trade-offs are influenced by the environment and their resolution depends on metabolic resources and plasticity 1,2 . One important environmental variable affecting plant growth is resource availability 3-6 . We first ask whether there is a trade-off between two tasks during vegetative growth of Arabidopsis thaliana: the maximization of physical size and the maximization of protein concentration. We then apply two methods to rank accessions: the first based solely on the performance of tasks, and the second based on the efficiency with which metabolic resources are deployed to perform tasks. In addition, we investigate whether the trade-off and the ranking of accessions are affected by the availability of carbon (C) and nitrogen (N) and the way in which it shapes the accession-specific metabolic profiles.Plants use light energy to transform CO 2 and inorganic nutrients into a plethora of metabolic precursors that are used to drive growth. As plants are sessile, resource acquisition is constrained by their physical size. In land plants, the majority of a mature cell is occupied by the vacuole, allowing the generation of a much larger physical size per unit protein than is usually obtained by microbes or animals 7 . For simplification, we do not consider the impact of shape and phenology on the relation between physical size and resource acquisition. On the other hand, proteins are required to catalyse the transformation of resources into biomass. In particular, the majority of the protein in a plant leaf is involved in photosynthesis [8][9][10] . We hypothesize that there is a trade-off between physical size and protein concentration. While production of leaves with a higher protein concentration will allow higher rates of photosynthesis and metabolism per unit biomass, it also increases the costs of growth a...

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“…In support of this idea, tsh4, which is also targeted by miR156, is expressed in a pattern complementary to miR156 in the IMs (8). Recent reports show repression of miR156 by sugar (26,27), which itself is a noncell-autonomous mobile signal. Because leaves are carbohydrate sources, perhaps the sugar that they produce travels to the peripheral zone of the meristem to repress microRNA expression and thus, allow ub2 and ub3 expression.…”

Section: Discussionmentioning

confidence: 79%

Maize SBP-box transcription factors unbranched2 and unbranched3 affect yield traits by regulating the rate of lateral primordia initiation

Chuck

Brown

Meeley

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

184

181

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The separation of male and female flowers in maize provides the potential for independent regulation of traits that affect crop productivity. For example, tassel branch number controls pollen abundance and length of shedding time, whereas ear row number directly affects kernel yield. Mutations in duplicate SBP-box transcription factor genes unbranched2 (ub2) and ub3 affect both of these yield traits. Double mutants display a decrease in tassel branch number and an increase in ear row number, both of which are enhanced by loss of a related gene called tasselsheath4 (tsh4). Furthermore, triple mutants have more tillers and leaves-phenotypes seen in Corngrass1 mutants that result from widespread repression of SBP-box genes. Immunolocalization of UB2 and UB3 proteins revealed accumulation throughout the meristem but absence from the central domain of the meristem where cells regenerate. Thus, ub2, ub3, and tsh4 function as redundant factors that limit the rate of cell differentiation to the lateral domains of meristems. When these genes are mutated, cells are allocated to lateral primordia at a higher rate, causing a net loss of cells from the central domain and premature termination of the inflorescence. The ub3 locus is tightly linked to quantitative trait loci (QTL) for ear row number and tassel branch number in both the nested association mapping (NAM) and intermated B73 by Mo17 (IBM) populations of maize recombinant inbreds, indicating that this gene may be agronomically important. Analysis of ear and tassel QTL across biparental families suggests that multiple mutations in ub3 independently regulate male and female inflorescence development.

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Sugar promotes vegetative phase change in Arabidopsis thaliana by repressing the expression of MIR156A and MIR156C

Cited by 290 publications

References 55 publications

Transitioning to the Next Phase: The Role of Sugar Signaling throughout the Plant Life Cycle

Transitioning to the Next Phase: The Role of Sugar Signaling throughout the Plant Life Cycle

Metabolic efficiency underpins performance trade-offs in growth of Arabidopsis thaliana

Maize SBP-box transcription factors unbranched2 and unbranched3 affect yield traits by regulating the rate of lateral primordia initiation

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