photosynthesis   532

« earlier    

Wavelengths of light and photosynthetic pigments (article) | Khan Academy
Properties of light; Photons in photosynthesis. How chlorophylls and other pigments absorb light.
education  organic  chemistry  molecular  biology  photosynthesis  pigments  chlorophylls  photons  colour  reference 
7 weeks ago by asaltydog
Fixing photosynthesis by engineering it to recycle a toxic mistake
A number of researchers have come up with ideas for how to do better than the system that evolution left plants with. A variety of organisms metabolize these chemicals in different ways, and it's possible to mix and match enzymes to push the toxic chemical into a different pathway than the one plants normally use. The researchers tried two pathways that had been suggested by earlier research. One involved five genes taken from bacteria, while a second mixed and matched genes from pumpkin, Arabidopsis and E. coli.

The researchers also came up with a third simplified pathway of their own that involved two genes: one from the pumpkin and the second from a single-celled alga. Combined, the products of the two genes converted the toxic chemical into a compound called malate, which is used in a variety of biochemical pathways.

The simplified pathway avoided some of the problems with the two earlier efforts. Unlike the first pathway, both of the genes could be active in the chloroplast, the site where photosynthesis takes place. It also avoided the production of hydrogen peroxide, which is a byproduct of one of the reactions in the second pathway. To enhance things further, they also lowered the activity of a protein that normally transports the small, toxic byproduct out of the chloroplast, where photosynthesis takes place. The reasoning here is that they would trap it in the same compartment as the enzymes that acted on it, and the efficiency would go up.
by:JohnTimmer  from:ArsTechnica  genetics  agriculture  photosynthesis 
january 2019 by owenblacker
Synthetic glycolate metabolism pathways stimulate crop growth and productivity in the field | Science
New synthetic pathway spliced in to override native pathway to improve CO2 capture and reduce accidental O2 capture (and subsequent remediation metabolic cost), for a massive boost in photosynthesis efficiency. But this is for C3 plants, so C4 plants like rice/corn may not work?
C3  plant  GM  GMO  synthetic  photosynthesis  pathway 
january 2019 by asteroza

« earlier    

related tags

1850  a-level_biology  a_level  aeonmag  afterpostdoc  agriculture  alcohol  algae  alternative-fuels  article  artificial  artificialleaf  atmosphere  bacteria  bio  biochemistry  biofuel  biology  biophysics  bookmarks  bookmarks_bar  botany  both  by:johntimmer  bypass  c3  cadmium  capture  carbon-capture  carbon  carboncapture  cardiology  catalyst  cathode  cell  cells  chemistry  chlorophyll  chlorophylls  chloroplast  classical  climate  climatechange  co  co2  coastal  coated  coherence  colour  communication  computation  computing  conversion  copper  cracking  crystal  cyanobacteria  cycle  delicious  descartes  designer  discover  dna  edc  education  efficiency  einstein  electrocatalyst  electrochemical  electrochemistry  electrolysis  electromagnetism  energy  engineering  environment  enzyme  ethanol  ethylene  farming  fat  fatamorgana  fixation  fossils  from:arstechnica  fuel  future  futurism  game  garden  gcse  gencon50  gene  general_science_resources  genes  genetherapy  genetic  geneticengineering  genetics  geology  gm  gmo  green  greenhousegases  guide  hacking  hertz  high  holiday  horticulture  howto  hydrocarbon  hydrocarbons  hydrogen  hydrogenase  hydrolysis  igcse_science  important  information  ink  innovation  instrumented  invisible  ionic  isaacnewton  ishemia  islands  isotopes  ito  japan  jrkk  kmc  leaf  leonfoucault  life  light  liquid  marine  materials  matter  measure  mechanics  metabolism  microbial  mit  mitigation  molecular  molecularbiology  mollusks  mooreslaw  multilayer  nanocrystal  nature  nickel  observable  optics  optimized  order  ordered  organic  organism  origins  oxygen  paleontology  particle  pathway  pet  phosphorus  photo  photocatalyst  photochemical  photochemistry  photon  photonic  photons  photosynthetic  photosythesis  photovoltaic  physics  pigments  pigmenty  plant  plantphys  plants  postdoc  power  production  propagation  protein  pv  quantum  quantum_mechanics  quantumcomputing  quantummechanics  quantumphysics  radiation  reduction  reference  refraction  regions  research  respiration  rhs  rice  rs  rubisco  sailing  science  science_ks3_-ks5  semiartificial  sensors  sethlloyd  sewage  sight  slow  slugs  solar-power  solar  solarfuel  sound  speedoflight  splitting  structure  sulfide  sun  synfuel  syngas  synthetic  systems  teaching_resources  technology  thylakoid  to:nb  tokens  tours  travel  tree  trees  use  vaccuum  vegetables  vegetation  vertical  visible  wallpaper  warming  waste  water  wave  waveparticleduality 

Copy this bookmark:



description:


tags: