Author
Vincent Guérin
Other affiliations: Institut national de la recherche agronomique
Bio: Vincent Guérin is an academic researcher from University of Angers. The author has contributed to research in topics: Axillary bud & Ligustrum ovalifolium. The author has an hindex of 12, co-authored 31 publications receiving 652 citations. Previous affiliations of Vincent Guérin include Institut national de la recherche agronomique.
Topics: Axillary bud, Ligustrum ovalifolium, Woody plant, Shoot, Light intensity
Papers
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TL;DR: This review presents the state of the art in perception of red (R) and far-red (FR) wavelengths and of the R:FR ratio by plants, phenotypic plant responses, and the molecular mechanisms related to these responses and the mechanisms underlying these differences in plant responses are addressed.
275 citations
TL;DR: Measurement of the growth and yield of anthurium plants receiving nutrient solutions with different total nitrogen, potassium and calcium concentrations and different NH4+/NO3− ratios found that adjusting the nutrient solution volume and composition to match plant requirements is the first step for flower yield improvement, fertilizer efficiency and reduction of pollution.
64 citations
TL;DR: The size of the peduncle and spathe of the first-formed flowers are too small to be sold in the best quality categories, and it might be possible to make large flowers appear earlier by suppressing small flowers as soon as they emerge.
58 citations
TL;DR: In this article, the growth of Viburnum tinus in peat alternative substrates was evaluated in two different climates: a French oceanic (Oce) and a Spanish Mediterranean (Med).
48 citations
TL;DR: In this article, the root-zone solution was monitored by the induced percolate (IP) method and the applied nutrient solution (NS) was modulated by dilution or increasing the volume applied to manage the electrical conductivity in the Spanish location.
43 citations
Cited by
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TL;DR: It is suggested that it might be possible to improve crop health at high planting densities by targeting links between phyB and JA signalling, in particular salicylic acid and jasmonic acid.
Abstract: Plants use photoreceptor proteins to detect the proximity of other plants and to activate adaptive responses. Of these photoreceptors, phytochrome B (phyB), which is sensitive to changes in the red (R) to far-red (FR) ratio of sunlight, is the one that has been studied in greatest detail. The molecular connections between the proximity signal (low R:FR) and a model physiological response (increased elongation growth) have now been mapped in considerable detail in Arabidopsis seedlings. We briefly review our current understanding of these connections and discuss recent progress in establishing the roles of other photoreceptors in regulating growth-related pathways in response to competition cues. We also consider processes other than elongation that are controlled by photoreceptors and contribute to plant fitness under variable light conditions, including photoresponses that optimize the utilization of soil resources. In examining recent advances in the field, we highlight emerging roles of phyB as a major modulator of hormones related to plant immunity, in particular salicylic acid and jasmonic acid (JA). Recent attempts to manipulate connections between light signals and defence in Arabidopsis suggest that it might be possible to improve crop health at high planting densities by targeting links between phyB and JA signalling.
303 citations
TL;DR: An overview of UV- and blue-radiations signaling pathways in some key physiological processes is presented and effects of plant exposure to these wavelengths on phenotype as well as on contents in useful metabolites and resistance to bio aggressors are described.
278 citations
TL;DR: This review presents the state of the art in perception of red (R) and far-red (FR) wavelengths and of the R:FR ratio by plants, phenotypic plant responses, and the molecular mechanisms related to these responses and the mechanisms underlying these differences in plant responses are addressed.
275 citations
TL;DR: An original algorithm to segment depth images of plant from a single top-view is proposed to open interesting perspectives in the direction of high-throughput phenotyping in controlled environment or in field conditions.
273 citations
TL;DR: This work proposes several pathways involving not only the classical hormones auxin, cytokinins and strigolactones, but also other signals with a strong influence on shoot branching such as gibberellins, sugars or molecular actors of plant phase transition.
Abstract: Shoot branching patterns result from the spatio-temporal regulation of axillary bud outgrowth. Numerous endogenous, developmental and environmental factors are integrated at the bud and plant levels to determine numbers of growing shoots. Multiple pathways that converge to common integrators are most probably involved. We propose several pathways involving not only the classical hormones auxin, cytokinins and strigolactones, but also other signals with a strong influence on shoot branching such as gibberellins, sugars or molecular actors of plant phase transition. We also deal with recent findings about the molecular mechanisms and the pathway involved in the response to shade as an example of an environmental signal controlling branching. We propose the TEOSINTE BRANCHED1, CYCLOIDEA, PCF transcription factor TB1/BRC1 and the polar auxin transport stream in the stem as possible integrators of these pathways. We finally discuss how modeling can help to represent this highly dynamic system by articulating knowledges and hypothesis and calculating the phenotype properties they imply.
253 citations