Proteomic analysis of the pulvinus, a heliotropic tissue, in Glycine max
Hakme Lee,Wesley M. Garrett,Joe H. Sullivan,Irwin N. Forseth,Savithiry S. Natarajan +4 more
- Vol. 5, Iss: 1
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TLDR
This study used two-dimensional gel electrophoresis and liquid chromatography-tandom mass spectrometry to separate and identify the proteins located in the soybean pulvinus and found that the most significant terms were related to proton transport.Abstract:
Certain plant species respond to light, dark, and other environmental factors by leaf movement. Leguminous plants both track and avoid the sun through turgor changes of the pulvinus tissue at the base of leaves. Mechanisms leading to pulvinar turgor flux, particularly knowledge of the proteins involved, are not well-known. In this study we used two-dimensional gel electrophoresis and liquid chromatography-tandom mass spectrometry to separate and identify the proteins located in the soybean pulvinus. A total of 183 spots were separated and 195 proteins from 165 spots were identified and functionally analyzed using single enrichment analysis for gene ontology terms. The most significant terms were related to proton transport. Comparison with guard cell proteomes revealed similar significant processes but a greater number of pulvinus proteins are required for comparable analysis. To our knowledge, this is a novel report on the analysis of proteins found in soybean pulvinus. These findings provide a better understanding of the proteins required for turgor change in the pulvinus.read more
Citations
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The functions of foliar nyctinasty: a review and hypothesis.
TL;DR: Foliar nyctinasty, much like the enhanced illumination of the full moon, may mitigate feeding by nocturnal herbivores by altering their foraging behaviour and may slow certain types of ectothermic herbivore making them more vulnerable to predation.
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Daily heliotropic movements assist gas exchange and productive responses in DREB1A soybean plants under drought stress in the greenhouse.
Miroslava Rakocevic,Miroslava Rakocevic,Mariele Müller,Fabio Takeshi Matsunaga,Norman Neumaier,José Renato Bouças Farias,Alexandre Lima Nepomuceno,Renata Fuganti-Pagliarini +7 more
TL;DR: Compared with the parental BR 16, P58 copes with drought through better compensation between diaheliotropic and paraheliotropy movements, finer tuning of water-use efficiency, a lower transpiration rate, higher leaf area and higher pod abortion to accomplish the maximum possible grain production under continued drought conditions.
References
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Journal ArticleDOI
Potential Effect of Soybean Heliotropism on Ultraviolet-B Irradiance and Dose
TL;DR: In this article, the authors evaluated both the distribution of irradiance and the effects of plant leaf heliotropic movement of soybean [Glycine max (L.) Merr. ] cultivars on the irradiance received on the leaf surface.
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Blue Light Inactivates Plasma Membrane H+-ATPase in Pulvinar Motor Cells of Phaseolus vulgaris L.
TL;DR: Results show that blue light inhibits the activity of the plasma membrane H(+)-ATPase, which supports the membrane depolarization induced by the blue light irradiation.
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Changes in mitogen‐activated protein kinase activity occur in the maize pulvinus in response to gravistimulation and are important for the bending response
TL;DR: It is possible that changes in MAPK activity in the gravistimulated pulvinus are part of a signalling cascade that may help to distinguish between minor perturbations in plant orientation and more significant and long-term changes, and may also help to determine the direction of bending.
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Heliotropic responses of soybean cultivars at three phenological stages and under two water regimes
Miroslava Rakocevic,Norman Neumaier,Gustavo Migliorini de Oliveira,Alexandre Lima Nepomuceno,José Renato Bouças Farias +4 more
TL;DR: The objectives of this work were to determine the heliotropic movements of the upper trifoliates for two soybean cultivars, BR 16 and Embrapa 48, during a daily cycle, and to estimate the impact of irrigation and daily leaflet movements on agronomic characteristics and grain yield.
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HELIOTROPIC LEAF MOVEMENT RESPONSE TO H+/ATPASE ACTIVATION, H+/ATPAsE INHIBITION, AND K+ CHANNEL INHIBITION IN VIVO'
TL;DR: The hypothesis that the proximal mechanism of heliotropic movement is similar to that of nyctinastic movements is supported, as the role of plasma membrane H+/ATPase and TEA-sensitive K+ channels in mediating pulvinar response to light is investigated.