Gains in Grain Yield: A Pair of Spikelets Makes All the Difference, Even When One is Sterile
Blog, The Plant Cell, The Plant Cell: In a NutshellMother Nature has a way of keeping seemingly useless structures around millions of years. Such structures are likely to have a use that is not obvious, although they could also be remnants of the evolutionary past without extant function, or non-functional but harmless byproducts of a different adaptive…
The dependency of red Rubisco on its cognate activase for enhancing plant photosynthesis and growth (Proc. Natl. Acad. Sci. USA)
Plant Science Research WeeklyThe rate of carboxylation by Rubisco versus the rate of the competing oxygenation reaction limits photosynthesis in some conditions, so many researchers are investigating ways to enhance Rubisco. Rubisco is not limited to green plants but can be found in other lineages including red algae and photosynthetic…
Useless no more: infertile spikelets contribute to grain yield in a major food crop and its relatives
Blog, Research, The Plant Cell, The Plant Cell: In a NutshellAuBuchon-Elder and Coneva et al. reveal an important function for apparently non-functional floral structures.
Plant Cell https://doi.org/10.1105/tpc.20.004242
By Taylor AuBuchon-Elder1,*, Viktoriya Coneva1,2*, Doug K. Allen1,3†, and Elizabeth A. Kellogg1†
1Donald Danforth Plant Science…
The photobiology paradox resolved: photoreceptors drive photosynthesis and vice-versa
Blog, Plant Physiology, Plant Physiology: News and Views, ResearchCharlotte Gommers, Assistant Features Editor
[email protected]
For a long time, the study of light fueled two independent fields of plant sciences. On the one hand, light energy is absorbed in the chloroplasts, to drive sugar production via photosynthesis. On the other hand, light is an…
Small subunits can determine enzyme kinetics of tobacco Rubisco expressed in Escherichia coli (Nature Plants)
Plant Science Research Weekly
Rubisco is the enzyme responsible for the fixation of CO2 to ribulose-1,5-bisphosphate (RuBP) during photosynthetic reactions. However, this enzyme has some functional issues, such as a slow catalytic turnover rate and sensitivity to temperature and CO2, and it catalyzes a competing oxygenation process…
State Transition Regulation in Chlamydomonas
Blog, Plant Physiology, Plant Physiology: News and Views, ResearchAnanya Mukherjee
University of Nebraska, Lincoln, Nebraska 68588
ORCID ID: 0000-0003-1802-1806
[email protected]
Photosynthetic organisms often face fluctuations in light quality and quantity. Green plants and algae have built-in mechanisms that allow them to adapt to such changes. One…
Mini foxtail millet as a new C4 model species (Nat. Plants) ($)
Plant Science Research Weekly
The three most widely adopted plant models all use C3 photosynthesis, but discoveries made in these plants are not always applicable to C4 plants. Foxtail millet (Setaria italica) has been emerging as a potential C4 model species, but its use for genomics research is challenging due to long generation…
Back to where it came from: chloroplast expression of both Rubisco subunits helps functional enzyme analysis
Blog, Research, The Plant Cell, The Plant Cell: In BriefRubisco catalyzes the key carboxylation step in photosynthetic CO2 fixation and is probably the most abundant protein on Earth. The enzyme is famous for inefficient catalysis and the habit of binding oxygen instead of CO2 in one out of every four binding events, leading to photorespiration reactions…
Synthetic conversion of leaf chloroplasts into carotenoid-rich plastids reveals mechanistic basis of natural chromoplast development (PNAS) ($)
Plant Science Research WeeklyBiofortification aims at increasing the content of health-promoting nutrients in edible parts of the plant. As an example, enhancing the production of carotenoids - natural pigments that provide the yellow to red color – in crops could prevent vitamin A deficiency in humans. In nature, carotenoids…