ArticlePlant physiology2002
Photorespiratory NH(4)(+) production in leaves of wild-type and glutamine synthetase 2 antisense oilseed rape.
Article in Plant physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 70 citations in OpenAlex.
- Magnesium promotes tea plant growth via enhanced glutamine synthetase-mediated nitrogen assimilation.Plant physiology · 2023Article
- Study of vacuole glycerate transporter NPF8.4 reveals a new role of photorespiration in C/N balance.Nature plants · 2023Article
- Is plastidic glutamine synthetase essential for CThe New phytologist · 2022Article
- Nitrogen metabolic rate and differential ammonia volatilization regulate resistance against opportunistic fungusFrontiers in plant science · 2022Article
- Assembly status transition offers an avenue for activity modulation of a supramolecular enzyme.eLife · 2021Article
- High Nitrogen Enhance Drought Tolerance in Cotton through Antioxidant Enzymatic Activities, Nitrogen Metabolism and Osmotic Adjustment.Plants (Basel, Switzerland) · 2020Article
- Short-term inhibition of glutamine synthetase leads to reprogramming of amino acid and lipid metabolism in roots and leaves of tea plant (Camellia sinensis L.).BMC plant biology · 2019Article
- Protein Hydrolysate Stimulates Growth in Tomato Coupled With N-Dependent Gene Expression Involved in N Assimilation.Frontiers in plant science · 2018Article
- The Stable Level of Glutamine synthetase 2 Plays an Important Role in Rice Growth and in Carbon-Nitrogen Metabolic Balance.International journal of molecular sciences · 2015Article
- Reassimilation of Photorespiratory Ammonium in Lotus japonicus Plants Deficient in Plastidic Glutamine Synthetase.PloS one · 2015Article
- Identification and characterization of improved nitrogen efficiency in interspecific hybridized new-type Brassica napus.Annals of botany · 2014Article
- Overexpression of the glutamine synthetase gene modulates oxidative stress response in rice after exposure to cadmium stress.Plant cell reports · 2013Article
- Elevated atmospheric CO2 decreases the ammonia compensation point of barley plants.Journal of experimental botany · 2013Article
- Ammonia emission from rice leaves in relation to photorespiration and genotypic differences in glutamine synthetase activity.Annals of botany · 2011Article
- Overexpressed glutamine synthetase gene modifies nitrogen metabolism and abiotic stress responses in rice.Plant cell reports · 2009Article
- AtAMT1;4, a pollen-specific high-affinity ammonium transporter of the plasma membrane in Arabidopsis.Plant & cell physiology · 2009Article
- Identification of a xylogalacturonan xylosyltransferase involved in pectin biosynthesis in Arabidopsis.The Plant cell · 2008Article
- Land plants equilibrate O2 and CO2 concentrations in the atmosphere.Photosynthesis research · 2006Review
- ARABINAN DEFICIENT 1 is a putative arabinosyltransferase involved in biosynthesis of pectic arabinan in Arabidopsis.Plant physiology · 2006Article
- Biosynthesis of the nitrile glucosides rhodiocyanoside A and D and the cyanogenic glucosides lotaustralin and linamarin in Lotus japonicus.Plant physiology · 2004Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Exposure of oilseed rape (Brassica napus) plants to increasing leaf temperatures between 15 degrees C and 25 degrees C increased photorespiratory NH(4)(+) production from 0.7 to 3.5 micromol m(-2) s(-1). Despite the 5-fold increase in the rate of NH(4)(+) production, the NH(4)(+) concentration in root and leaf tissue water and xylem sap dropped significantly, whereas that in the leaf apoplastic fluid remained constant. The in vitro activity of glutamine synthetase (GS) in both leaves and roots also increased with temperature and in all cases substantially exceeded the observed rates of photorespiratory NH(4)(+) production. The surplus of GS in oilseed rape plants was confirmed using GS2 antisense plants with 50% to 75% lower in vitro leaf GS activity than in the wild type. Despite the substantial reduction in GS activity, there was no tendency for antisense plants to have higher tissue NH(4)(+) concentrations than wild-type plants and no overall correlation between GS activity and tissue NH(4)(+) concentration was observed. Antisense plants exposed to leaf temperatures increasing from 14 degrees C to 27 degrees C or to a trifold increase in the O(2) to CO(2) ratio did not show any change in steady-state leaf tissue NH(4)(+) concentration or in NH(3) emission to the atmosphere. The antisense plants also had similar leaf tissue concentrations of glutamine, glycine, and serine as the wild type, whereas glutamate increased by 38%. It is concluded that photorespiration does not control tissue or apoplastic levels of NH(4)(+) in oilseed rape leaves and, as a consequence, that photorespiration does not exert a direct control on leaf atmosphere NH(3) fluxes.
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