Is Plant Growth Driven by Sink Regulation?

Dingkuhn, Michaël; Luquet, Delphine; Clément‐Vidal, Anne; Tambour, L.; Kim, Hae Koo; Song, Y.H.

doi:10.1007/1-4020-5906-x_13

Cited by 20 publications

(10 citation statements)

References 35 publications

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“…Sugar signalling is highly relevant in such models, especially in relation to the management of transitory reserves, organ senescence and end‐product inhibition of photosynthesis. This is consistent with the prominent role of sugar sensing and of the regulation of cleavage of sucrose at sink sites observed in molecular studies 13. It is also consistent with recent publications suggesting numerous interactions between trehalose metabolism and plant development 14…”

Section: Organisation In Higher Plantssupporting

confidence: 91%

“…With the current knowledge, traits related to developmental processes are easier to model than complex quantitative traits (such as yield) related to biomass accumulation and source–sink interaction. Dingkuhn et al 13 showed that functional–genomic modelling based on molecular findings and grounded in physiological understanding of functional–structural relations of complex traits is well possible. Sugar signalling is highly relevant in such models, especially in relation to the management of transitory reserves, organ senescence and end‐product inhibition of photosynthesis.…”

Section: Organisation In Higher Plantsmentioning

confidence: 99%

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Plant neurobiology and green plant intelligence: science, metaphors and nonsense

Struik¹,

Yin²,

Meinke³

2007

J Sci Food Agric

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This paper analyses the recent debates on the emerging science of plant neurobiology, which claims that the individual green plant should be considered as an intelligent organism. Plant neurobiology tries to use elements from animal physiology as elegant metaphors to trigger the imagination in solving complex plant physiological elements of signalling, internal and external plant communication and whole-plant organisation. Plant neurobiology proposes useful concepts that stimulate discussions on plant behaviour. To be considered a new science, its added value to existing plant biology needs to be presented and critically evaluated. A general, scientific approach is to follow the so-called 'parsimony principle', which calls for simplest ideas and the least number of assumptions for plausible explanation of scientific phenomena. The extent to which plant neurobiology agrees with or violates this general principle needs to be examined. Nevertheless, innovative ideas on the complex mechanisms of signalling, communication, patterning and organisation in higher plants are badly needed. We present current views on these mechanisms and the specific role of auxins in regulating them.  2007 Society of Chemical IndustryKeywords: communication; organisation; patterning; plant neurobiology; plant intelligence; signalling INTRODUCTIONEnormous progress in knowledge on the molecular biology and genetics of plants has highlighted the complexity of plant metabolism and its regulation under variable and often stressful environmental conditions. Plant scientists wonder how the plant, as an autonomous organism, is capable of managing its internal complexity and the myriad of information it is exposed to in order to maximise its fitness, i.e. its capability to survive under stress and propagate its genes. There is a need for new concepts on how plants perceive signals, how plants arrange internal communication within the (nuclear or other) genome, within cells, between cells and between tissues or organs, and how the plasticity of the whole plant is organised. Plant neurobiology offers such a concept, borrowing metaphors, images and ideas from animal physiology. Plant neurobiology assumes the existence in green plants of structures equivalent to those known from animal physiology, such as synapses * , neurons, rapid signalling and communication systems, including an organisation

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Section: Organisation In Higher Plantssupporting

confidence: 91%

Section: Organisation In Higher Plantsmentioning

confidence: 99%

Plant neurobiology and green plant intelligence: science, metaphors and nonsense

Struik¹,

Yin²,

Meinke³

2007

J Sci Food Agric

View full text Add to dashboard Cite

show abstract

“…Although few studies aimed to investigate the mechanisms responsible for successful germination/sprouting in this species ( Verma et al, 2013 ; Singh et al, 2016 ; Boussiengui-Boussiengui et al, 2016 ), very little is known about the biochemical and molecular aspects related to this process, especially concerning sink and source interactions of the bud and culm. Plant growth and development is modulated by the balance between source and sink strengths ( Paul and Foyer, 2001 ; Dingkuhn et al, 2007 ; Smith and Stitt, 2007 ; Patrick and Colyvas, 2014 ), namely production of photoassimilates in leaves and their use in non-photosynthetic organs. In sugarcane, sucrose can be quickly metabolized in sink tissues to maintain its levels within a proper range, enabling fast responses to alterations in sucrose supply and demand.…”

Section: Discussionmentioning

confidence: 99%

Metabolite Profiles of Sugarcane Culm Reveal the Relationship Among Metabolism and Axillary Bud Outgrowth in Genetically Related Sugarcane Commercial Cultivars

et al. 2018

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Metabolic composition is known to exert influence on several important agronomic traits, and metabolomics, which represents the chemical composition in a cell, has long been recognized as a powerful tool for bridging phenotype–genotype interactions. In this work, sixteen truly representative sugarcane Brazilian varieties were selected to explore the metabolic networks in buds and culms, the tissues involved in the vegetative propagation of this species. Due to the fact that bud sprouting is a key trait determining crop establishment in the field, the sprouting potential among the genotypes was evaluated. The use of partial least square discriminant analysis indicated only mild differences on bud outgrowth potential under controlled environmental conditions. However, primary metabolite profiling provided information on the variability of metabolic features even under a narrow genetic background, typical for modern sugarcane cultivars. Metabolite–metabolite correlations within and between tissues revealed more complex patterns for culms in relation to buds, and enabled the recognition of key metabolites (e.g., sucrose, putrescine, glutamate, serine, and myo-inositol) affecting sprouting ability. Finally, those results were associated with the genetic background of each cultivar, showing that metabolites can be potentially used as indicators for the genetic background.

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“…The parameters indicating the PDT such as shoot P concentration (SPC) and shoot P uptake (SPU) have also been studied and subjected to QTL mapping (Wissuwa and Ae, 2001). In the present study, the parameters PlH, NT, SDW, FLW and leaf colour were selected because they are easy to record, cost effective and highly correlated with the overall degree of PDT (Chaubey et al, 1994;Dingkuhn et al, 2006;Fageria and Knupp, 2013). The parental genotypes were selected to establish segregating progenies by primarily considering their degree of PDT and having the final aim of uncovering important genomic regions that could be present in the rice landraces which have not yet been manipulated by the geneticists.…”

Section: Goodness Of Fit Analysis Of the Colour Datamentioning

confidence: 99%

Quantitative genetic assessment of the phosphorus deficiency tolerance in selected F2 progenies of rice (<em>Oryza sativa L.</em>) genotypes in Sri Lanka

et al. 2016

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Phosphorus deficiency (PD) is a limiting factor in rice farming and hence PD tolerant varieties are essential. The PD tolerant quantitative trait loci (QTL) have been identified using the rice landraces Kasalath and Nipponbare. However, PD tolerant Sri Lankan rice landraces or varieties have not been used for QTL mapping. It is important to study the genetics of the PD tolerance associated traits of the locally grown rice genotypes before mapping QTL. Thus, aim of this study was to unravel the genetics of PD tolerant associated traits in segregating progenies generated by crossing PD tolerant and sensitive rice genotypes. Four F 2 progenies (H-4 × Bg 352, Suduheenati × Bg 352, Mas × Bg 352 and Suduheenati × Bg 357) had been created by crossing PD sensitive genotype Bg 352 with PD tolerant genotypes H-4, Suduheenati and Mas and PD sensitive genotype Bg 357 with PD tolerant genotype Suduheenati, respectively. The F 2 seeds from each cross along with the parents were grown in a greenhouse using a P deficient soil. The growth and quantitative colour parameters were measured at flowering stage. The normality, broad sense heritability and heterosis were calculated for each trait. Goodness of fit tests were conducted for colour metrics considering the common epistatic dihybrid ratios. The growth parameters were normally distributed with higher heritability indicating a potential basis for QTL mapping.

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Is Plant Growth Driven by Sink Regulation?

Cited by 20 publications

References 35 publications

Plant neurobiology and green plant intelligence: science, metaphors and nonsense

Plant neurobiology and green plant intelligence: science, metaphors and nonsense

Metabolite Profiles of Sugarcane Culm Reveal the Relationship Among Metabolism and Axillary Bud Outgrowth in Genetically Related Sugarcane Commercial Cultivars

Quantitative genetic assessment of the phosphorus deficiency tolerance in selected F2 progenies of rice (<em>Oryza sativa L.</em>) genotypes in Sri Lanka

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