Plants response to light stress

Shi, Yafei; Ke, Xiangsheng; Yang, Xiaoxia; Liu, Yuhan; Hou, Xin

doi:10.1016/j.jgg.2022.04.017

Cited by 58 publications

(39 citation statements)

References 154 publications

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“…From the literature on free-living algae and higher plants, it is becoming increasingly clear that photosynthetic organisms use a great diversity of mechanisms to protect themselves against the potentially harmful effects of excess light [ 11 ]. A uniquely lichenological mechanism is the production of light-screening melanins by the fungi that form the upper cortex [ 13 ].…”

Section: Discussionmentioning

confidence: 99%

“…For lichens, species that grow in microhabitats where much of the light is derived from sunflecks usually display considerably higher NPQ than collections from more open microhabitats [ 9 , 10 ]. Although little studied in lichens, additional short-term mechanisms may include an increased ability to scavenge ROS formed during photoinhibition, an increased capacity to repair ROS-induced damage, and an increase in cyclic electron flow [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

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Melanisation in Boreal Lichens Is Accompanied by Variable Changes in Non-Photochemical Quenching

Ndhlovu

Solhaug

Minibayeva

et al. 2022

Plants

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Lichens often grow in microhabitats where they absorb more light than they can use for fixing carbon, and this excess energy can cause the formation of harmful reactive oxygen species (ROS). Lichen mycobionts can reduce ROS formation by synthesizing light-screening pigments such as melanins in the upper cortex, while the photobionts can dissipate excess energy radiationlessly using non-photochemical quenching (NPQ). An inherent problem with using fluorimetry techniques to compare NPQ in pale and melanised thalli is that NPQ is normally measured through a variously pigmented upper cortex. Here we used a dissection technique to remove the lower cortices and medullas of Lobaria pulmonaria and Crocodia aurata and then measure NPQ from the underside of the thallus. Results confirmed that NPQ can be satisfactorily assessed with a standard fluorimeter by taking measurement from above using intact thalli. However, photobionts from the bottom of the photobiont layer tend to have slightly lower rates of PSII activity and lower NPQ than those at the top, i.e., display mild “shade” characteristics. Analysis of pale and melanised thalli of other species indicates that NPQ in melanised thalli can be higher, similar or lower than pale thalli, probably depending on the light history of the microhabitat and presence of other tolerance mechanisms.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Melanisation in Boreal Lichens Is Accompanied by Variable Changes in Non-Photochemical Quenching

Ndhlovu

Solhaug

Minibayeva

et al. 2022

Plants

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Section: Introductionmentioning

confidence: 99%

“…Light is the primary energy source of photosynthesis and its absorption can significantly limit photosynthesis. To allow optimal light harvesting, plants have evolved several strategies to adapt to low and high light conditions (Shi et al, 2022). While low light might limit carbon fixation and plant growth, excessive light can damage plant cells by inducing the production of reactive oxygen species (ROS).…”

Section: Introductionmentioning

confidence: 99%

High non‐photochemical quenching of VPZ transgenic potato plants limits CO₂ assimilation under high light conditions and reduces tuber yield under fluctuating light

Lehretz

Schneider

Leister

et al. 2022

JIPB

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Under natural conditions, photosynthesis has to be adjusted to fluctuating light intensities. Leaves exposed to high light dissipate excess light energy in form of heat at photosystem II (PSII) by a process called non-photochemical quenching (NPQ). Upon fast transition from light to shade, plants lose light energy by a relatively slow relaxation from photoprotection. Combined overexpression of violaxanthin deepoxidase (VDE), photosystem II subunit S (PsbS) and zeaxanthin epoxidase (ZEP) in tobacco accelerates relaxation from photoprotection, and increases photosynthetic productivity. In Arabidopsis, expression of the same three genes (VPZ) resulted in a more rapid photoprotection but growth of the transgenic plants was impaired. Here we report on VPZ expressing potato plants grown under various light regimes. Similar to tobacco and Arabidopsis, induction and relaxation of NPQ was accelerated under all growth conditions tested, but, did not cause an overall increased photosynthetic rate or growth of transgenic plants. Tuber yield of VPZ expressing plants was unaltered as compared to control plants under constant light conditions and even decreased under fluctuating light conditions. Under control conditions, levels of the

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“…Thus, plants possess the ability to flexibly adjust light absorption and photosynthetic activities to prevent such damages [ 4 ]. For example, plant cells can accumulate a red-colored compound called anthocyanin and filter or reflect harmful radiation [ 5 ]. Chloroplasts in plant cells also possess the ability to control the activities of enzymes that scavenge damaging oxygen by-products, resulting in protection of photosynthetic activities [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanisms Regulating Energy Homeostasis in Plant Cells and Their Potential to Inspire Electrical Microgrids Models

et al. 2022

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In this paper, the main features of systems that are required to flexibly modulate energy states of plant cells in response to environmental fluctuations are surveyed and summarized. Plant cells possess multiple sources (chloroplasts and mitochondria) to produce energy that is consumed to drive many processes, as well as mechanisms that adequately provide energy to the processes with high priority depending on the conditions. Such energy-providing systems are tightly linked to sensors that monitor the status of the environment and inside the cell. In addition, plants possess the ability to efficiently store and transport energy both at the cell level and at a higher level. Furthermore, these systems can finely tune the various mechanisms of energy homeostasis in plant cells in response to the changes in environment, also assuring the plant survival under adverse environmental conditions. Electrical power systems are prone to the effects of environmental changes as well; furthermore, they are required to be increasingly resilient to the threats of extreme natural events caused, for example, by climate changes, outages, and/or external deliberate attacks. Starting from this consideration, similarities between energy-related processes in plant cells and electrical power grids are identified, and the potential of mechanisms regulating energy homeostasis in plant cells to inspire the definition of new models of flexible and resilient electrical power grids, particularly microgrids, is delineated. The main contribution of this review is surveying energy regulatory mechanisms in detail as a reference and helping readers to find useful information for their work in this research field.

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Plants response to light stress

Cited by 58 publications

References 154 publications

Melanisation in Boreal Lichens Is Accompanied by Variable Changes in Non-Photochemical Quenching

Melanisation in Boreal Lichens Is Accompanied by Variable Changes in Non-Photochemical Quenching

High non‐photochemical quenching of VPZ transgenic potato plants limits CO₂ assimilation under high light conditions and reduces tuber yield under fluctuating light

Mechanisms Regulating Energy Homeostasis in Plant Cells and Their Potential to Inspire Electrical Microgrids Models

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Plants response to light stress

Cited by 58 publications

References 154 publications

Melanisation in Boreal Lichens Is Accompanied by Variable Changes in Non-Photochemical Quenching

Melanisation in Boreal Lichens Is Accompanied by Variable Changes in Non-Photochemical Quenching

High non‐photochemical quenching of VPZ transgenic potato plants limits CO2 assimilation under high light conditions and reduces tuber yield under fluctuating light

Mechanisms Regulating Energy Homeostasis in Plant Cells and Their Potential to Inspire Electrical Microgrids Models

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High non‐photochemical quenching of VPZ transgenic potato plants limits CO₂ assimilation under high light conditions and reduces tuber yield under fluctuating light