Light modulates activity and expression of glutamine synthetase isoforms in maize seedling roots
2008 ◽
Vol 60
(4)
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pp. 649-660
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Keyword(s):
Rt Pcr
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In maize roots, continuous illumination inhibits chloroplastic glutamine synthetase (GS2) activity, which decreased in light from 72.8% in 4-day-old to 26% in 10-day-old plants. In dark-adapted plants transferred to light for 6 days, GS2 activity declined from 100% to 41%, but in light-adapted plants transferred to darkness, it increased to the level of the dark control. Changes of cytosolic (GS1) activity were minor, with a similar trend. Quantitative RT-PCR revealed that light/dark treatments moderately affected only transcription of GS1 isoforms, with the exception of GS1-2, which was dramatically induced by darkness and repressed by light.
Keyword(s):
2000 ◽
Vol 145
(3)
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pp. 477-482
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2017 ◽
Vol 188
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pp. 441-447
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Keyword(s):
2009 ◽
Vol 56
(4)
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pp. 488-494
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1996 ◽
Vol 271
(47)
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pp. 29561-29568
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1992 ◽
Vol 15
(6-7)
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pp. 795-803
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1982 ◽
Vol 5
(10)
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pp. 1217-1227
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Keyword(s):