Phytochrome, Carbon Sensing, Metabolism, and Plant Growth Plasticity

Krahmer, Johanna; Ganpudi, Ashwin; Abbas, Ammad; Romanowski, Andrés; Halliday, Karen

doi:10.1104/pp.17.01437

Cited by 49 publications

(41 citation statements)

References 79 publications

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“…No change in the growth rate of Venus Flytrap plants might be due to the adaptation of this species to high blue light contribution in light spectrum what was observed by other authors in lettuce plant (Lactuca sativa) (Ouzounis et al 2014(Ouzounis et al , 2015a. In the darkness the red/far-red ration is very low leading to inhibition of multitude processes regulated by Phy photoreceptor family, in particular growth and development (Krahmer et al 2018;Song and Li 2018). On the one hand, the level of soluble sugars, amino acids and a few groups of secondary metabolisms increase, on the other, accumulation of the starch, proteins, chlorophyll and carotenoids decrease causing decrease rate of plant growth and development (Han et al 2017;Krahmer et al 2018).…”

Section: Discussionmentioning

confidence: 66%

“…In the darkness the red/far-red ration is very low leading to inhibition of multitude processes regulated by Phy photoreceptor family, in particular growth and development (Krahmer et al 2018;Song and Li 2018). On the one hand, the level of soluble sugars, amino acids and a few groups of secondary metabolisms increase, on the other, accumulation of the starch, proteins, chlorophyll and carotenoids decrease causing decrease rate of plant growth and development (Han et al 2017;Krahmer et al 2018). In our experiments in the darkness, a statistically significant decrease in the plant growth rate after 8 weeks of culture was observed what was related to the inconsiderable etiolated shoots extension in relation to the whole plant biomass.…”

Section: Discussionmentioning

confidence: 99%

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Response of Dionaea muscipula J. Ellis to light stress in in vitro: physiological study

Tokarz

Makowski

Banasiuk

et al. 2018

Plant Cell Tiss Organ Cult

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Stress response of Dionaea muscipula J. Ellis to various light quality and quantity regimes, in the context of secondary metabolites production was determined. Venus Flytrap plants were cultivated in vitro in four different light regimes: fluorescence (50 µmol × m −2 × s −1 PPFD-control), fluorescence (120 µmol × m −2 × s −1 PPFD) and white LED (120 µmol × m −2 × s −1 PPFD) and in the darkness. Higher light intensity caused significant increase of membrane lipid peroxidation during the first 4 weeks of experiment. Whereas, light spectrum caused activation of defensive mechanisms. In the case of white LED, this mechanism was associated with the increased catalase activity and elevated synthesis of cinnamic acid derivatives, total phenols and plumbagin. While, in higher light intensity of fluorescence lamp, a reduction of chlorophyll content, and an increase amount of phenylopropanoids and plumbagin was observed. In turn, Venus Flytrap plants showed the highest activity of antioxidant enzymes, especially peroxidase, in the darkness. Higher concentration of plumbagin observed for the first time in response to different light quality and quantity, suggests that plumbagin is involved in photoprotection and/or in the antioxidant activity in Venus Flytrap tissue. Consequently, light might be used as an inorganic elicitator of 1,4-naphthoquinone derivatives and other phenolic compounds.

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Section: Discussionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 99%

Response of Dionaea muscipula J. Ellis to light stress in in vitro: physiological study

Tokarz

Makowski

Banasiuk

et al. 2018

Plant Cell Tiss Organ Cult

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“…Based on melatonin synthesis induction via light and ROS in plants [33], it is clear that all three photoreceptors are necessary for plant melatonin synthesis. Among the three photoreceptors, phytochromes have been extensively studied due to their involvement in a vast array of plant biological functions, including germination, de-etiolation, the shade-avoidance response, photosynthesis, photomorphogenesis, and senescence [50]. Phytochromes exist in two interconvertible forms, namely inactive Pr and active Pfr; R light induces inactive Pr to become active Pfr, whereas FR light transforms active Pfr into inactive Pf.…”

Section: Photoreceptor-mediated Melatonin Production In Plantsmentioning

confidence: 99%

Effects of Light Quality and Phytochrome Form on Melatonin Biosynthesis in Rice

2020

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Light is an important factor influencing melatonin synthesis in response to cadmium treatment in rice. However, the effects of light quality on, and the involvement of phytochrome light receptors in, melatonin production have not been explored. In this study, we used light-emitting diodes (LEDs) to investigate the effect of light wavelength on melatonin synthesis, and the role of phytochromes in light-dependent melatonin induction in rice. Upon cadmium treatment, peak melatonin production was observed under combined red and blue (R + B) light, followed by red (R) and blue light (B). However, both far-red (FR) LED light and dark treatment (D) failed to induce melatonin production. Similarly, rice seedlings grown under the R + B treatment showed the highest melatonin synthesis, followed by those grown under B and R. These findings were consistent with the results of our cadmium treatment experiment. To further confirm the effects of light quality on melatonin synthesis, we employed rice photoreceptor mutants lacking functional phytochrome genes. Melatonin induction was most inhibited in the phytochrome A mutant (phyA) followed by the phyB mutant under R + B treatment, whereas phyB produced the least amount of melatonin under R treatment. These results indicate that PhyB is an R light receptor. Expression analyses of genes involved in melatonin biosynthesis clearly demonstrated that tryptophan decarboxylase (TDC) played a key role in phytochrome-mediated melatonin induction when rice seedlings were challenged with cadmium.

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“…Moreover, 10 µM PPA2 pretreatment promoted the accumulation of organic acids (succinic acid, malic acid, and threonic acid), sugars (fructose and sucrose), and amino acids (glycine and alanine) in rice. We speculate that this is why BTH and PPA2 have different effects on rice growth [22].…”

Section: Discussionmentioning

confidence: 93%

A Pyrimidin-Like Plant Activator Stimulates Plant Disease Resistance and Promotes the Synthesis of Primary Metabolites

Long

Sun

et al. 2020

IJMS

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Plant activators are chemicals that induce plant defense responses to various pathogens. Here, we reported a new potential plant activator, 6-(methoxymethyl)-2-[5-(trifluoromethyl)-2-pyridyl] pyrimidin-4-ol, named PPA2 (pyrimidin-type plant activator 2). Unlike the traditional commercial plant activator benzothiadiazole S-methyl ester (BTH), PPA2 was fully soluble in water, and it did not inhibit plant growth or root system development in rice (Oryza sativa). PPA2 pretreatment significantly increased plant resistance against bacterial infection in both Arabidopsis and rice, in conjunction with increases in the level of jasmonoyl-isoleucine and 12-oxo-phytodienoic acid. In addition, metabolite profiling indicated that BTH significantly reduced the abundance of various primary metabolites in rice seedlings, including most amino acids, sugars, and organic acids; by contrast, PPA2 promoted their synthesis. Our results thus indicate that PPA2 enhances plant defenses against bacterial infection through the jasmonic acid pathway, and that as a water-soluble compound that can promote the synthesis of primary metabolites it has broad potential applications in agriculture.

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Phytochrome, Carbon Sensing, Metabolism, and Plant Growth Plasticity

Cited by 49 publications

References 79 publications

Response of Dionaea muscipula J. Ellis to light stress in in vitro: physiological study

Response of Dionaea muscipula J. Ellis to light stress in in vitro: physiological study

Effects of Light Quality and Phytochrome Form on Melatonin Biosynthesis in Rice

A Pyrimidin-Like Plant Activator Stimulates Plant Disease Resistance and Promotes the Synthesis of Primary Metabolites

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