The effect of red and far-red light on carotenoid synthesis by etiolated maize seedlings

1962 ◽  
Vol 1 (2) ◽  
pp. 67-72 ◽  
Author(s):  
Renee Z. Cohen ◽  
T.W. Goodwin
Keyword(s):  
Red Light ◽  
Maize Seedlings ◽  
Carotenoid Synthesis

scholarly journals Regulation of the expression of NADP-malic enzyme by UV-B, red and far-red light in maize seedlings

1999 ◽  
Vol 32 (10) ◽  
pp. 1187-1193 ◽  
Author(s):  
P. Casati ◽  
M.F. Drincovich ◽  
G.E. Edwards ◽  
C.S. Andreo
Keyword(s):  
Malic Enzyme ◽  
Red Light ◽  
Maize Seedlings

scholarly journals Red Light-inhibited Mesocotyl Elongation in Maize Seedlings

1978 ◽  
Vol 61 (4) ◽  
pp. 534-537 ◽  
Author(s):  
Larry N. Vanderhoef ◽  
Winslow R. Briggs
Keyword(s):  
Red Light ◽  
Maize Seedlings ◽  
Mesocotyl Elongation

Maize AUXIN-BINDING PROTEIN 1 and AUXIN-BINDING PROTEIN 4 impact on leaf growth, elongation, and seedling responsiveness to auxin and light

Botany ◽  
2012 ◽  
Vol 90 (10) ◽  
pp. 990-1006 ◽  
Author(s):  
Dejana Jurišić-Knežev ◽  
Mária Čudejková ◽  
David Zalabák ◽  
Marta Hlobilová ◽  
Jakub Rolčík ◽  
...  
Keyword(s):  
Binding Protein ◽  
Leaf Growth ◽  
Red Light ◽  
Maize Seedlings ◽  
Exogenous Auxin ◽  
Auxin Binding ◽  
Auxin Binding Protein ◽  
Auxin Binding Proteins ◽  
The Relationship

In maize, at least five auxin-binding proteins (ABPs) have been identified, yet their functions remain unclear. The present study reports the use of maize abp1, abp4, and abp1abp4 mutants to investigate the role of ABPs during maize growth and development. Single and double abp mutant plants grown in a greenhouse differ from the wild type (WT) in their leaf declination and leaf blade growth. The effect of the dark (D), blue light (BL), red light (RL), and exogenous auxin on the development of mutant seedlings was also studied. Relative to WT, etiolated mutant seedlings were shorter and showed a reduced responsiveness to exogenous auxin. In BL or RL, the responsiveness of maize seedlings to auxin was distinctly less than in D. The reducing effect of light on seedling responsiveness to auxin is mediated at least by phytochromes. The suppression of ABP1 and (or) ABP4 led to a distinct accumulation of free indole-3-acetic acid (IAA) in etiolated and light-grown seedling organs. We concluded that ABP1 and ABP4 participate in the growth of maize seedlings, mediate seedling responses to auxin, and interact with light signaling pathway(s). We also deduce a functional interaction between ABP1 and ABP4, which is that the relationship between them is light-, organ- and response-dependent.

Influence of red light on the expression of genes on stomatal formation in maize seedlings

2020 ◽  
Vol 100 (3) ◽  
pp. 296-303
Author(s):  
Tie Dong Liu ◽  
Xi Wen Zhang ◽  
Yong Xu
Keyword(s):  
Blue Light ◽  
Stomatal Density ◽  
Red Light ◽  
Net Photosynthesis ◽  
Stomatal Development ◽  
Intercellular Signaling ◽  
Stomatal Index ◽  
Maize Seedlings ◽  
Expression Levels ◽  
Expression Of Genes

Red light significantly affects the expression of plant photoreceptor genes and influences stomatal development through crosstalk of the constitutive photomorphogenic 1–cryptochrome–phytochrome signaling pathway. When blue light was replaced with red light, the expression levels of ZmCry1, ZmPhyB1, ZmEPF2, and ZmEPFL9 were enhanced, whereas that of ZmCOP1 was restricted. Moreover, the expression levels of ZmSPCH and ZmMUTE were also enhanced, but they were generally lower than those under white light. Consequently, stomatal formation, which was determined by net photosynthesis, stomatal conductance, intercellular CO2 concentration, and transpiration rate, was inhibited through decreased stomatal index and stomatal density. We conclude that red light positively regulates EPFL9 in the intercellular signaling but reduces the positive regulation of blue light on COP1 and epidermal patterning factor 2 in the intracellular and intercellular signaling; therefore, though red light promotes the gene’s function on stomatal development of seedling maize, blue light maybe dominant to red light in seedling stage.

UV-B, red and far-red light regulate induction of the C4 isoform of NADP-malic enzyme in etiolated maize seedlings

1998 ◽  
Vol 25 (6) ◽  
pp. 701 ◽  
Author(s):  
Paula Casati ◽  
María Fabiana Drincovich ◽  
Carlos S. Andreo ◽  
Raymon Donahue ◽  
Gerald E. Edwards
Keyword(s):  
Malic Enzyme ◽  
C4 Photosynthesis ◽  
Red Light ◽  
Light Treatment ◽  
Photon Flux ◽  
Maize Seedlings ◽  
Etiolated Seedlings ◽  
Gene Transcripts ◽  
Positive Effect ◽  
Gene Mrna

The induction of NADP-malic enzyme (NADP-ME) in maize (Zea mays) etiolated seedlings as a function of intensity and duration of exposure to UV-B radiation was investigated by measuring changes in activity and protein, as well as by levels of NADP-ME gene transcripts. Exposures to UV radiation from 2 to 60 min including photon flux densities of UV-B of 0.5–2 mmol quanta m-2 s-1 which are well below levels which occur naturally under full sunlight, caused an increase in Me gene mRNA and NADP-ME protein, as well as in NADP-ME activity. A similar dosage of UV-A radiation was ineffective. A low level of red light (10 µmol quanta m-2 s-1) for only 5 min was also effective in inducing increases in NADP-ME activity equivalent to that with UV-B radiation. A 5 min exposure to far red light (100 µmol quanta m-2 s-1) following UV-B or red light treatment largely reversed the induction of NADP-ME, and this effect of far-red could be eliminated by further treatment with UV-B or red light. These results indicate that physiological levels of UV-B radiation have a positive effect on induction of the synthesis of a photosynthetic enzyme which is involved in C4 photosynthesis.

scholarly journals Physiological and Genetic Characterization of End-of-Day Far-Red Light Response in Maize Seedlings

2010 ◽  
Vol 154 (1) ◽  
pp. 173-186 ◽  
Author(s):  
Patrice G. Dubois ◽  
Gregory T. Olsefski ◽  
Sherry Flint-Garcia ◽  
Tim L. Setter ◽  
Owen A. Hoekenga ◽  
...  
Keyword(s):  
Genetic Characterization ◽  
Red Light ◽  
Light Response ◽  
Maize Seedlings

scholarly journals Red Light-inhibited Mesocotyl Elongation in Maize Seedlings

1979 ◽  
Vol 63 (6) ◽  
pp. 1062-1067 ◽  
Author(s):  
Larry N. Vanderhoef ◽  
Peter H. Quail ◽  
Winslow R. Briggs
Keyword(s):  
Red Light ◽  
Maize Seedlings ◽  
Mesocotyl Elongation

Plastid and seedling development in SAN-9789 [4-chloro-5-(methylamine)-2-(α,α,α-trifluoro-m-tolyl)-3-(2H)-pyridasinone]-treated etiolated bean seedlings

1980 ◽  
Vol 58 (1) ◽  
pp. 25-35 ◽  
Author(s):  
Anthony D. Pardo ◽  
Jerome A. Schiff
Keyword(s):  
Normal Development ◽  
Higher Plants ◽  
Red Light ◽  
Thylakoid Membranes ◽  
Phaseolus Vulgaris L ◽  
Trifoliate Leaf ◽  
Prolamellar Bodies ◽  
Developmental Effects ◽  
Carotenoid Synthesis ◽  
Membrane Components

SAN 9789[4-chloro-5-(methylamine)-2-(α,α,α-trifluoro-m-tolyl)-3-(2H)-pyridasinone] inhibits carotenoid synthesis at the level of phytoene in Phaseolus vulgaris L. Although carotenoids are greatly reduced in the primary leaves, prolamellar bodies and thylakoid membranes are formed containing phototransformable protochlorophyll(ide). SAN 9789 also produces developmental effects similar to those of red light since seedlings treated in darkness are short, show plumular unhooking, formation of adventitious roots, expansion of primary leaves and full expansion of the first trifoliate leaf and first internode. The effect is not directly on phytochrome since far red light does not reverse the effect of SAN. If abscisic acid (ABA) is indeed formed from carotenoids, we may be observing the consequences of reduced levels of ABA leading to reduced ethylene production as occurs with red light. The first trifoliate leaf of SAN-treated plants contains practically no carotenoids (0.2%) compared with untreated 7-day-old, etiolated primary leaves yet shows normal development of etioplasts, prolamellar bodies, thylakoid membranes, and phototransformable protochlorophyll(ide). In Euglena, lack of carotenoids stops synthesis and assembly of other membrane components; in higher plants this type of regulation does not appear to operate.

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