Photomorphogenesis and Photoreceptors

Wit, Mieke de; Pierik, R.L.M.

doi:10.1007/978-94-017-7291-4_6

Cited by 16 publications

(17 citation statements)

References 145 publications

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“…Our data suggests that the phyB/PIF5 light perception module directly impacts on PILS transcription and utilizes its activity to alter nuclear auxin signalling. The phyB/PIF signalling circuit is well known to trigger auxin-reliant growth during shade avoidance responses (reviewed in 25 ). Shade conditions trigger PIF-dependent transcription of YUCCA 26 , TAA1 and CYP79B2 27 auxin biosynthesis genes, leading to high auxin levels.…”

Section: Discussionmentioning

confidence: 99%

Light triggers PILS-dependent reduction in nuclear auxin signalling for growth transition

et al. 2017

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The phytohormone auxin induces or represses growth depending on its concentration and the underlying tissue type. However, it remains unknown how auxin signalling is modulated to allow tissues transiting between repression and promotion of growth. Here we used apical hook development as a model for growth transitions in plants. A PIN-FORMED (PIN)-dependent intercellular auxin transport module defines an auxin maximum that is causal for growth repression during the formation of the apical hook. Our data illustrates that growth transition for apical hook opening is largely independent of this PIN module, but requires the PIN-LIKES (PILS) putative auxin carriers at the endoplasmic reticulum. PILS proteins reduce nuclear auxin signalling in the apical hook, leading to the de-repression of growth and the onset of hook opening. We also show that the phytochrome (phy) B-reliant light-signalling pathway directly regulates PILS gene activity, thereby enabling light perception to repress nuclear auxin signalling and to control growth. We propose a novel mechanism, in which PILS proteins allow external signals to alter tissue sensitivity to auxin, defining differential growth rates.

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Section: Discussionmentioning

confidence: 99%

Light triggers PILS-dependent reduction in nuclear auxin signalling for growth transition

et al. 2017

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“…An energy balance was calculated for each lysimeter for the 12 data collection days. The method for constructing the energy balance used in this study is a combination of those found in research from agriculture, biophysics, and plant physiology [15,22,23]. To the knowledge of the authors, the present research presents the first application and evaluation of the energy balance approach for estimating ET from GSI using thermal imagery.…”

Section: Energy Balancementioning

confidence: 99%

Feasibility of using an energy balance to measure evapotranspiration in green stormwater infrastructure

2021

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Effective green stormwater infrastructure (GSI) design requires comprehensive quantification of the volume of water that can be treated or removed over a given time period. It is recognized that evapotranspiration (ET) can be a substantial pathway for stormwater volume reduction in bioretention systems. However, measuring ET is often difficult and expensive, such as with lysimeters or a mass balance approach. This research focused on a new technique for quantifying ET in bioretention systems by exploring an approach using thermal imaging to calculate ET by measuring the flux of energy at the canopy surface. This thermal imaging approach was compared to ET measurements given by a traditional mass balance approach. The experimental setup had three benchtop scale vegetated lysimeters planted with Switchgrass. Time lapse thermal images of the Switchgrass plants were taken at 10 second intervals and paired with meteorological data. The data were used in an energy balance to estimate the mass of water lost from the lysimeter plant/soil system. That mass was compared to the change in weight measured by weighing the lysimeter before and after the data collection period. For comparison, reference ET was also calculated for the vegetated systems using three common reference ET equations. The uncalibrated energy balance equation developed here estimated an averaged ET over 12 data collection days within 1 mm of the mass balance measured ET. These findings demonstrate the feasibility of using a thermal image energy balance technique to estimate ET.

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“…Серед внутрішніх факторів регуляції напруження донорно-акцепторних відносин ключову роль відіграє гормональна система. Фітогормони включені в систему трансдукції світлового сигналу (Hornitschek et al, 2012;Zhang et al, 2014;Humplík et al, 2015;De Wit and Pierik, 2016;Van Hook, 2016). Зокрема, за дії світла змінюється метаболізм і чутливість рослин до гіберелінів (Zhang et al, 2014).…”

Section: вступunclassified

The impact of growth stimulators and retardants on the utilization of reserve lipids by sunflower seedlings

Kuryata

Poprotska

Рогач

2017

Regul. Mech. Biosyst.

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Using growth stimulators and anti-gibberillin preparations of different chemical compounds, we created different pressures in the coordinate covalent bond systems during germination of sunflower seeds. Using gibberellin and treptolem growth stimulators and Paclobutrazol and Chlormequat-Chlorid anti-gibberillin preparations is an efficient method of reconstructing coordinate covalent bond during the germination of seeds of oil-bearing crops. It allows determination of the role of the hormone factor in the utilization of reserve lipids over the heterotrophic phase of plant development. Blocking the synthesis of gibberellins by retardants caused decrease in activity of lipase, hydrolysis of reserve lipids and the meristem, which resulted in decrease in the energy of germination. Compared to the control, the impact of gibberellin increased the content of butyric acid, and the impact of Paclobutrazol reduced the content of butyric acid. Linoleic acid showed exactly the opposite changes. In relation to the control, a significant increase in the content of non-saturated linoleic acid was observed in both variants of the experiment. Gibberellic acid stimulated and Paclobutrazol slowed the usage of free higher fatty acids for the process of morphogenesis.

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Photomorphogenesis and Photoreceptors

Cited by 16 publications

References 145 publications

Light triggers PILS-dependent reduction in nuclear auxin signalling for growth transition

Light triggers PILS-dependent reduction in nuclear auxin signalling for growth transition

Feasibility of using an energy balance to measure evapotranspiration in green stormwater infrastructure

The impact of growth stimulators and retardants on the utilization of reserve lipids by sunflower seedlings

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