Integrated Transcriptome and Metabolome Analysis Reveals an Essential Role for Auxin in Hypocotyl Elongation during End-of-Day Far-Red Treatment of Cucurbita moschata (Duch. Ex Lam.)

Liu, Qi; Zhang, Hanqing; Mei, Yanhao; Li, Qi; Bai, Yahui; Yu, Huibin; Xu, Xiaodong; Ma, Junsheng; Wu, Yongjun; Yang, Zhenchao

doi:10.3390/agronomy11050853

Cited by 3 publications

(3 citation statements)

References 45 publications

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“…Consistent with the small phenotypic effects, supplemental FR also triggered a very mild transcriptome response as compared to studies in other species (Gommers et al, 2017;Liu et al, 2021;Pantazopoulou et al, 2017;Kohnen et al, 2016). Additionally, in our study, even that small number of responsive genes is not the same between the varieties.…”

Section: Discussionsupporting

confidence: 90%

Far‐red light enrichment affects gene expression and architecture as well as growth and photosynthesis in rice

Huber,

de Boer,

Romanowski

et al. 2024

Plant Cell & Environment

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Plants use light as a resource and signal. Photons within the 400–700 nm waveband are considered photosynthetically active. Far‐red photons (FR, 700–800 nm) are used by plants to detect nearby vegetation and elicit the shade avoidance syndrome. In addition, FR photons have also been shown to contribute to photosynthesis, but knowledge about these dual effects remains scarce. Here, we study shoot‐architectural and photosynthetic responses to supplemental FR light during the photoperiod in several rice varieties. We observed that FR enrichment only mildly affected the rice transcriptome and shoot architecture as compared to established model species, whereas leaf formation, tillering and biomass accumulation were clearly promoted. Consistent with this growth promotion, we found that CO2‐fixation in supplemental FR was strongly enhanced, especially in plants acclimated to FR‐enriched conditions as compared to control conditions. This growth promotion dominates the effects of FR photons on shoot development and architecture. When substituting FR enrichment with an end‐of‐day FR pulse, this prevented photosynthesis‐promoting effects and elicited shade avoidance responses. We conclude that FR photons can have a dual role, where effects depend on the environmental context: in addition to being an environmental signal, they are also a potent source of harvestable energy.

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Section: Discussionsupporting

confidence: 90%

Far‐red light enrichment affects gene expression and architecture as well as growth and photosynthesis in rice

Huber,

de Boer,

Romanowski

et al. 2024

Plant Cell & Environment

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“…Numerous researchers have investigated the effects of different wavelengths of light on plant growth and development [12,13]. However, less attention has been paid to end-of-light (EOD) and most of the existing studies on EOD have focused on the phenomenon that R/FR changes the morphology of photosensitive pigments (Pr/Pfr) to the extent that it affects the growth of plant hypocotyls [14][15][16][17], and little research has been conducted on the end-of-day additive effects of the remaining light qualities.…”

Section: Introductionmentioning

confidence: 99%

Improves the Resilience of Cucumber Seedlings under High-Light Stress through End-of-Day Addition of a Low Intensity of a Single Light Quality

Li,

Zhao,

Qiu

et al. 2023

Horticulturae

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In order to investigate whether an end-of-day (EOD) addition of a single light quality could help alleviate high-light stress in a cucumber, cucumber seedlings were subjected to a 9 d period of high-light stress (light intensity was 1300 ± 50 μmol·m−2·s−1) when they were growing to 3 leaves and 1 heart, while the red light (R), blue light (B), green light (G), far-red light (FR), and ultraviolet A (UVA) light were added in the end-of-day period. The present study was conducted to measure antioxidants, chlorophyll content, and its synthetic degradative enzymes and chlorophyll a fluorescence in response to the degree of stress in cucumber seedlings. The experimental results demonstrated that the addition of blue light, UVA light, and green light significantly decreased the SOD and POD activities in the middle of the treatment (6th day) compared to the dark (D) treatment and improved the absorption performance of the PSI reaction centre of the cucumber seedling leaves to a certain extent (PIABS), but the PSII capacity capture ability (TRo/RC) of the three treatments decreased compared to the D treatment. The MDA content of all the treatments had a significant decrease compared to that of the D treatment. The MDA content of all the treatments was significantly lower than that of D, and its FV/FM was increased to different degrees; the chlorophyll degrading enzyme PPH activity was significantly lower than that of the D treatment when a single light quality was added at the EOD period on the 9th d of treatment. In conclusion, cucumber seedlings subjected to short-term high-light stress can be added during the EOD period with a low-light intensity of a single R, G, B, or UVA light.

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“…EOD FR-treated tomato ( Solanum lycopersicum ) plants grew higher [ 22 ]. Liu et al [ 23 ] showed that auxin plays an essential role in the EOD FR light-mediated hypocotyl elongation of pumpkin ( Cucurbita moschata ), shedding light on the mechanisms of EOD FR mediated hypocotyl elongation. The EOD R light led to a higher mass of dill ( Anethum graveolens ) plants.…”

Section: Introductionmentioning

confidence: 99%

The Influence of End-of-Day Blue Light on the Growth, Photosynthetic, and Metabolic Parameters of Lettuce at Different Development Stages

Vaštakaitė-Kairienė

Samuolienė

Šveikauskas

et al. 2022

Plants

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This study evaluates the effect of end-of-day blue (EOD B) light on the physiological response of lettuce (Lactuca sativa, Lobjoits Green Cos) at different phenological development stages. Plants were grown in a controlled environment growth chamber (day/night temperature 21 ± 2 °C; relative air humidity 60 ± 5%) under the light of light-emitting diodes (LEDs) consisting of 5% blue (B; 450 nm), 85% red (R; 660 nm), and 10% green (G; 530 nm) photosynthetic photon flux density (PPFD) at 200 µmol m−2 s−1 for 16 h d−1 (BRG, control) for 8, 15, and 25 days (BBCH 12, BBCH 14, and BBCH 18, respectively). For the EOD B treatments, lettuce plants were additionally illuminated with 100% of B light at 30 and 60 µmol m−2 s−1 PPFD for 4 h d−1 (B30 and B60, respectively). The results show that EOD B light caused the elevated shoot elongation of lettuce plants regardless of their growth stages. However, leaf width increased only in more developed lettuce plants (BBCH 18). EOD B light negatively affected the development of new leaves and fresh weight, except for seedlings (BBCH 12). Most photosynthetic and spectral leaf indices also decreased when lettuce was treated with EOD B light, especially under the PPFD level of 60 µmol m−2 s−1. Moreover, the changes in metabolic parameters such as DPPH free radical activity, free proline content, and H+-ATPase activity in lettuce showed a plant response to unfavorable conditions to EOD B light.

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Integrated Transcriptome and Metabolome Analysis Reveals an Essential Role for Auxin in Hypocotyl Elongation during End-of-Day Far-Red Treatment of Cucurbita moschata (Duch. Ex Lam.)

Cited by 3 publications

References 45 publications

Far‐red light enrichment affects gene expression and architecture as well as growth and photosynthesis in rice

Far‐red light enrichment affects gene expression and architecture as well as growth and photosynthesis in rice

Improves the Resilience of Cucumber Seedlings under High-Light Stress through End-of-Day Addition of a Low Intensity of a Single Light Quality

The Influence of End-of-Day Blue Light on the Growth, Photosynthetic, and Metabolic Parameters of Lettuce at Different Development Stages

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