An ultraviolet B condition that affects growth and defense in Arabidopsis

Vandenbussche, Filip; Yu, Na; Li, Weidong; Vanhaelewyn, Lucas; Hamshou, Mohamad; Straeten, Dominique Van Der; Smagghe, Guy

doi:10.1016/j.plantsci.2017.12.005

Cited by 48 publications

(46 citation statements)

References 71 publications

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“…Conversely, low UV-B energy acts as a eustress, has less harmful effects on plant growth, and renders plants tolerance against stress by increasing leaf thickness and activating defense mechanisms via specific UVR8 response pathway [ 6 , 9 , 28 ]. Such conflicting results have been reported in many previous studies focusing on UV-B [ 6 , 28 , 29 , 30 , 31 , 32 , 33 ]. Exposure to a UV-B dose of 1.2, 4.3, 5.0, and 8.5 kJ d −1 was not found to affect growth in sunflower ( Helianthus annuus ), rosemary ( Rosmarinus officinalis ), soy bean ( Glycine max ), and basil ( Ocimum basilicum ), respectively [ 6 , 28 , 30 , 33 ].…”

Section: Discussionmentioning

confidence: 70%

“…Exposure to a UV-B dose of 1.2, 4.3, 5.0, and 8.5 kJ d −1 was not found to affect growth in sunflower ( Helianthus annuus ), rosemary ( Rosmarinus officinalis ), soy bean ( Glycine max ), and basil ( Ocimum basilicum ), respectively [ 6 , 28 , 30 , 33 ]. However, biomass accumulation was inhibited in sugar beet ( Beta vulgaris ), soy bean and Arabidopsis, and maca ( Lepidium meyenii ), under 9.1, 10.0, and 18.2 kJ d −1 of UV-B, respectively [ 28 , 29 , 31 , 32 ]. UV-B energy levels of 0.1 W m −2 (2.4 kJ d −1 ), 0.25 W m −2 (5.2 kJ d −1 ), and 0.5 W m −2 (10.8 kJ d −1 ) used in this study did not damage the shoot biomass of C. denticulatum , however, 1.0 W m −2 (21.8 kJ d −1 ) and 1.25 W m −2 (27.2 kJ d −1 ) treatments inhibited the increase in shoot fresh weight and induced browning of leaves, indicating plant injury ( Figure 1 and Figure 2 and Table 2 ).…”

Section: Discussionmentioning

confidence: 99%

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Physiologic and Metabolic Changes in Crepidiastrum denticulatum According to Different Energy Levels of UV-B Radiation

Park

Lee

et al. 2020

IJMS

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Ultraviolet B (UV-B) light, as a physical elicitor, can promote the secondary metabolites biosynthesis in plants. We investigated effects of different energy levels of UV-B radiation on growth and bioactive compounds of Crepidiastrum denticulatum. Three-week-old seedlings were grown in a plant factory for 5 weeks. Plants were subjected to different levels of UV-B (0, 0.1, 0.25, 0.5, 1.0, and 1.25 W m−2), 6 h a day for 6 days. All UV-B treatments had no negative effect on the shoot dry weight; however, relatively high energy treatments (1.0 and 1.25 W m−2) inhibited the shoot fresh weight. UV-B light of 0.1, 0.25, and 0.5 W m−2 did not affect total chlorophyll and H2O2 contents; however, they increased total carotenoid content. On 4 days, 0.25 W m−2 treatment increased antioxidant capacity, total hydroxycinnamic acids (HCAs) content, and several sesquiterpenes. Treatments with 1.0 and 1.25 W m−2 increased total carotenoid, total HCAs, and H2O2 contents, and destroyed chlorophyll pigments, reducing maximum quantum yield of photosystem II and causing visible damage to leaves. Partial least squares discrimination analysis (PLS-DA) showed that secondary metabolites were distinguishably changed according to energy levels of UV-B. The potential of 0.25 W m−2 UV-B for the efficient production of bioactive compounds without growth inhibition in C. denticulatum was identified.

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Section: Discussionmentioning

confidence: 70%

Section: Discussionmentioning

confidence: 99%

Physiologic and Metabolic Changes in Crepidiastrum denticulatum According to Different Energy Levels of UV-B Radiation

Park

Lee

et al. 2020

IJMS

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“…UV effects are dependent on light intensity and plant developmental stages ( Moreira-Rodríguez et al, 2017 ). UV-A and UV-B can target different classes of primary and secondary metabolites, such as chlorophylls, carotenoids, phenolics, and glucosinolates, showing the potent effect of light on redirecting carbon flux in plants, with concomitant effects on the phyllosphere ( Mewis et al, 2012 ; Li et al, 2017 ; Heinze et al, 2018 ; Vandenbussche et al, 2018 ). Accumulation of secondary metabolites is accompanied with increased expression of genes overlapping with the jasmonic acid and salicylic acid pathways, as seen by transcriptomics analyses of UV-B exposed Arabidopsis plants, suggesting activation of defense signaling mechanisms that may impact microbial communities ( Vandenbussche et al, 2018 ).…”

Section: The Role Of Lightmentioning

confidence: 99%

“…Expression of cell wall modifying genes in Arabidopsis is responsive to UV-B light ( Vandenbussche et al, 2018 ). The UV photoreceptor UVR8 in Arabidopsis senses UV-B and activates resistance responses to B. cinerea ( Demkura and Ballaré, 2012 ).…”

Section: The Role Of Lightmentioning

confidence: 99%

Influence of Light on Plant–Phyllosphere Interaction

2018

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Plant–phyllosphere interactions depend on microbial diversity, the plant host and environmental factors. Light is perceived by plants and by microorganisms and is used as a cue for their interaction. Photoreceptors respond to narrow-bandwidth wavelengths and activate specific internal responses. Light-induced plant responses include changes in hormonal levels, production of secondary metabolites, and release of volatile compounds, which ultimately influence plant–phyllosphere interactions. On the other hand, microorganisms contribute making some essential elements (N, P, and Fe) biologically available for plants and producing growth regulators that promote plant growth and fitness. Therefore, light directly or indirectly influences plant–microbe interactions. The usage of light-emitting diodes in plant growth facilities is helping increasing knowledge in the field. This progress will help define light recipes to optimize outputs on plant–phyllosphere communications. This review describes research advancements on light-regulated plant–phyllosphere interactions. The effects of full light spectra and narrow bandwidth-wavelengths from UV to far-red light are discussed.

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“…oxygen species (ROS), reduction of photosynthesis performance, activation of additional stress signaling pathways and damage to DNA, cell membranes and proteins [4][5][6][7] . In addition, the activation of UVB-specific and/or nonspecific signaling pathways depend on the fluence rate, duration, acclimation, plant species and interaction with other environmental factors 8,9 . Besides UVR8, part of the blue light photoreceptors including phototropins (PHOT) and cryptochromes (CRY) can absorb photons in the UVA region.…”

mentioning

confidence: 99%

Physiological responses of maca (Lepidium meyenii Walp.) plants to UV radiation in its high-altitude mountain ecosystem

Reyes

Esparza

Crestani

et al. 2020

Sci Rep

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Ultraviolet (UV) radiation is a small fraction of the solar spectrum, which acts as a key environmental modulator of plant function affecting metabolic regulation and growth. Plant species endemic to the Andes are well adapted to the harsh features of high-altitude climate, including high UV radiation. Maca (Lepidium meyenii Walpers) is a member of Brassicaceae family native to the central Andes of peru, which grows between 3500 and 4500 m of altitude, where only highland grasses and few hardy bushes can survive. even though maca has been the focus of recent researches, mainly due to its nutraceutical properties, knowledge regarding its adaptation mechanisms to these particular natural environmental conditions is scarce. in this study, we manipulated solar UV radiation by using UV-transmitting (control) or blocking (UV-block) filters under field conditions (4138 m above the sea level) in order to understand the impact of UV on morphological and physiological parameters of maca crops over a complete growing season. Compared to the UV-blocking filter, under control condition a significant increase of hypocotyl weight was observed during the vegetative phase together with a marked leaf turnover. Although parameters conferring photosynthetic performance were not altered by UV, carbohydrate allocation between above and underground organs was affected. Control condition did not influence the content of secondary metabolites such as glucosinolates and phenolic compounds in hypocotyls, while some differences were observed in the rosettes. These differences were mainly related to leaf turnover and the protection of new young leaves in control plants. Altogether, the data suggest that maca plants respond to strong UV radiation at high altitudes by a coordinated remobilization and relocation of metabolites between source and sink organs via a possible UV signaling pathway.The Andes form the longest and one of the highest mountain ranges in the world, with a width of approximately 400 Km and over 100 peaks above 6000 m of altitude along the west coast of South America 1 . An extensive biodiversity of plant species is endemic to this region and these have been used for centuries by the native population. Interestingly, these crops are well adapted to the harsh climate of the Andes including drought, freezing temperatures, strong wind and high ultraviolet (UV) radiation 2 . UV represents a small fraction of the solar spectrum and based on its biological effects it is divided into UVC (100-280 nm), UVB (280-315 nm) and UVA (315-400 nm). However, only UVA and fraction of UVB radiation reach the Earth surface, of which UVB has the highest energy in the solar spectrum and thus has a major impact on all organisms. Moreover, levels of UVB, as well as those of UVA, vary in time and space depending on the weather, climate and geographical conditions, such as season of the year, altitude, latitude and atmospheric surface 3 .In the past decades, there has been an increased interest in the effects of UVB radiation on plant physiology and...

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An ultraviolet B condition that affects growth and defense in Arabidopsis

Cited by 48 publications

References 71 publications

Physiologic and Metabolic Changes in Crepidiastrum denticulatum According to Different Energy Levels of UV-B Radiation

Physiologic and Metabolic Changes in Crepidiastrum denticulatum According to Different Energy Levels of UV-B Radiation

Influence of Light on Plant–Phyllosphere Interaction

Physiological responses of maca (Lepidium meyenii Walp.) plants to UV radiation in its high-altitude mountain ecosystem

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