scholarly journals Effect of Light Quality and Vernalization on Late-Flowering Mutants of Arabidopsis thaliana

1990 ◽  
Vol 92 (3) ◽  
pp. 770-776 ◽  
Author(s):  
Jose M. Martinez-Zapater ◽  
Chris R. Somerville
Keyword(s):  
Arabidopsis Thaliana ◽  
Light Quality ◽  
Late Flowering ◽  
Effect Of Light

scholarly journals The effect of light quality on plant physiology, photosynthetic, and stress response in Arabidopsis thaliana leaves

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0247380
Author(s):  
Nafiseh Yavari ◽  
Rajiv Tripathi ◽  
Bo-Sen Wu ◽  
Sarah MacPherson ◽  
Jaswinder Singh ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Enzymatic Activity ◽  
Leaf Area ◽  
Light Quality ◽  
Marker Genes ◽  
Anthocyanin Content ◽  
Area Growth ◽  
Leaf Area Growth ◽  
Underlying Mechanisms ◽  
Effect Of Light

The impacts of wavelengths in 500–600 nm on plant response and their underlying mechanisms remain elusive and required further investigation. Here, we investigated the effect of light quality on leaf area growth, biomass, pigments content, and net photosynthetic rate (Pn) across three Arabidopsis thaliana accessions, along with changes in transcription, photosynthates content, and antioxidative enzyme activity. Eleven-leaves plants were treated with BL; 450 nm, AL; 595 nm, RL; 650 nm, and FL; 400–700 nm as control. RL significantly increased leaf area growth, biomass, and promoted Pn. BL increased leaf area growth, carotenoid and anthocyanin content. AL significantly reduced leaf area growth and biomass, while Pn remained unaffected. Petiole elongation was further observed across accessions under AL. To explore the underlying mechanisms under AL, expression of key marker genes involved in light-responsive photosynthetic reaction, enzymatic activity of antioxidants, and content of photosynthates were monitored in Col-0 under AL, RL (as contrast), and FL (as control). AL induced transcription of GSH2 and PSBA, while downregulated NPQ1 and FNR2. Photosynthates, including proteins and starches, showed lower content under AL. SOD and APX showed enhanced enzymatic activity under AL. These results provide insight into physiological and photosynthetic responses to light quality, in addition to identifying putative protective-mechanisms that may be induced to cope with lighting-stress in order to enhance plant stress tolerance.

The effect of daylength on the transition to flowering in phytochrome-deficient, late-flowering and double mutants of Arabidopsis thaliana

1995 ◽  
Vol 95 (2) ◽  
pp. 260-266 ◽  
Author(s):  
Maarten Koornneef ◽  
Corrie Hanhart ◽  
Patty van Loenen-Martinet ◽  
Hetty Blankestijn de Vries
Keyword(s):  
Arabidopsis Thaliana ◽  
Late Flowering ◽  
Transition To Flowering

Effect of light quality on total gypenosides accumulation and related key enzyme gene expression in Gynostemma pentaphyllum

2018 ◽  
Vol 10 (1) ◽  
pp. 34-39
Author(s):  
Ting Wang ◽  
Xiang-rong Tian ◽  
Xiao-yu Wu ◽  
Zhun Luo ◽  
Gui Li ◽  
...  
Keyword(s):  
Gene Expression ◽  
Light Quality ◽  
Gynostemma Pentaphyllum ◽  
Enzyme Gene ◽  
Key Enzyme ◽  
Effect Of Light

Changes in the responses to light quality during ontogeny in Chenopodium album

2003 ◽  
Vol 81 (2) ◽  
pp. 152-163 ◽  
Author(s):  
Humberto Fabio Causin ◽  
Renata D Wulff
Keyword(s):  
Plant Growth ◽  
Light Quality ◽  
Chenopodium Album ◽  
Intraspecific Variability ◽  
Reproductive Fitness ◽  
Stem Length ◽  
Shade Avoidance ◽  
Late Flowering ◽  
Total Leaf ◽  
Avoidance Responses

Morphological shade-avoidance responses have been hypothesized to be a form of adaptive plasticity to improve competition for light; however, little is known about their intraspecific variability and their effect on reproductive fitness. To compare plant responses either at a common age or at a common phenological stage, two experiments were conducted with early- and late-flowering Chenopodium album plants exposed to different red (660 nm) to far red (730 nm) ratios. In the first experiment, plant height and number of leaves were recorded at several times during the vegetative stage, and at the onset of flowering, each plant was harvested and other growth traits were measured. In the second experiment, three destructive harvests were performed across the whole plant cycle. Plant growth and development markedly differed between early- and late-flowering plants in all of the conditions tested. Light treatments significantly affected stem length, total leaf number, total leaf area, and relative allocation to leaf biomass. In all families, the response of stem elongation to light treatments decreased later in the development, while changes in the other plastic responses were mostly due to variations in plant growth. No significant treatment effect was found on relative biomass allocation to reproductive structures. However, individual seed mass significantly differed between certain groups, indicating that light quality can affect reproductive fitness through changes in traits other than fruit or seed set.Key words: Chenopodium album, fitness, intraspecific variability, phenotypic plasticity, red to far red ratio, shade-avoidance responses.

A genetic and physiological analysis of late flowering mutants in Arabidopsis thaliana

1991 ◽  
Vol 229 (1) ◽  
pp. 57-66 ◽  
Author(s):  
M. Koornneef ◽  
C. J. Hanhart ◽  
J. H. van der Veen
Keyword(s):  
Arabidopsis Thaliana ◽  
Late Flowering ◽  
Physiological Analysis
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