Sökning: id:"swepub:oai:DiVA.org:uu-454305" >
Upregulation of bun...
Upregulation of bundle sheath electron transport capacity under limiting light in C-4 Setaria viridis
-
- Ermakova, Maria (författare)
- Australian Natl Univ, Res Sch Biol, Div Plant Sci, Australian Res Council Ctr Excellence Translat Ph, Acton, ACT 2601, Australia.
-
- Bellasio, Chandra (författare)
- Australian Natl Univ, Res Sch Biol, Div Plant Sci, Australian Res Council Ctr Excellence Translat Ph, Acton, ACT 2601, Australia.;Univ Balearic Isl, Palma De Mallorca 07122, Illes Balears, Spain.
-
- Fitzpatrick, Duncan (författare)
- Australian Natl Univ, Res Sch Biol, Div Plant Sci, Australian Res Council Ctr Excellence Translat Ph, Acton, ACT 2601, Australia.
-
visa fler...
-
- Furbank, Robert T. (författare)
- Australian Natl Univ, Res Sch Biol, Div Plant Sci, Australian Res Council Ctr Excellence Translat Ph, Acton, ACT 2601, Australia.
-
- Mamedov, Fikret, Ph.D., Dr.Sci. (författare)
- Uppsala universitet,Molekylär biomimetik
-
- von Caemmerer, Susanne (författare)
- Australian Natl Univ, Res Sch Biol, Div Plant Sci, Australian Res Council Ctr Excellence Translat Ph, Acton, ACT 2601, Australia.
-
visa färre...
-
Australian Natl Univ, Res Sch Biol, Div Plant Sci, Australian Res Council Ctr Excellence Translat Ph, Acton, ACT 2601, Australia Australian Natl Univ, Res Sch Biol, Div Plant Sci, Australian Res Council Ctr Excellence Translat Ph, Acton, ACT 2601, Australia.;Univ Balearic Isl, Palma De Mallorca 07122, Illes Balears, Spain. (creator_code:org_t)
- 2021-05-07
- 2021
- Engelska.
-
Ingår i: The Plant Journal. - : John Wiley & Sons. - 0960-7412 .- 1365-313X. ; 106:5, s. 1443-1454
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://uu.diva-port... (primary) (Raw object)
-
https://onlinelibrar...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- C-4 photosynthesis is a biochemical pathway that operates across mesophyll and bundle sheath (BS) cells to increase CO2 concentration at the site of CO2 fixation. C-4 plants benefit from high irradiance but their efficiency decreases under shade, causing a loss of productivity in crop canopies. We investigated shade acclimation responses of Setaria viridis, a model monocot of NADP-dependent malic enzyme subtype, focussing on cell-specific electron transport capacity. Plants grown under low light (LL) maintained CO2 assimilation rates similar to high light plants but had an increased chlorophyll and light-harvesting-protein content, predominantly in BS cells. Photosystem II (PSII) protein abundance, oxygen-evolving activity and the PSII/PSI ratio were enhanced in LL BS cells, indicating a higher capacity for linear electron flow. Abundances of PSI, ATP synthase, Cytochrome b(6)f and the chloroplast NAD(P)H dehydrogenase complex, which constitute the BS cyclic electron flow machinery, were also increased in LL plants. A decline in PEP carboxylase activity in mesophyll cells and a consequent shortage of reducing power in BS chloroplasts were associated with a more oxidised plastoquinone pool in LL plants and the formation of PSII - light-harvesting complex II supercomplexes with an increased oxygen evolution rate. Our results suggest that the supramolecular composition of PSII in BS cells is adjusted according to the redox state of the plastoquinone pool. This discovery contributes to the understanding of the acclimation of PSII activity in C-4 plants and will support the development of strategies for crop improvement, including the engineering of C-4 photosynthesis into C-3 plants.
Ämnesord
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
Nyckelord
- Setaria viridis
- C4 photosynthesis
- light harvesting
- electron transport
- bundle sheath
- Photosystem II
- chloroplast NAD(P)H dehydrogenase complex
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas