Publications by authors named "O Dautermann"
Climate change is globally affecting rainfall patterns, necessitating the improvement of drought tolerance in crops. is a relatively drought-tolerant cereal. Functional stay-green sorghum genotypes can maintain green leaf area and efficient grain filling during terminal post-flowering water deprivation, a period of ~10 weeks.
View Article and Find Full Text PDFGreen diatom mutants reveal an intricate biosynthetic pathway of fucoxanthin.
Proc Natl Acad Sci U S A
September 2022
Article Synopsis
- Fucoxanthin is a key pigment in certain algae that enhances global primary productivity by efficiently absorbing green light, making these algae appear brown.
- Researchers identified two crucial enzymes for its biosynthesis by creating knockout mutants of a diatom, which lacked fucoxanthin and were green.
- The proposed biosynthesis pathway for fucoxanthin is more complex than expected and involves connections to the xanthophyll cycle, indicating an intricate evolutionary origin among different algal species.
C plants frequently experience high light and high temperature conditions in the field, which reduce growth and yield. However, the mechanisms underlying these stress responses in C plants have been under-explored, especially the coordination between mesophyll (M) and bundle sheath (BS) cells. We investigated how the C model plant Setaria viridis responded to a four-hour high light or high temperature treatment at photosynthetic, transcriptomic, and ultrastructural levels.
View Article and Find Full Text PDFArticle Synopsis
- Plants in dryland ecosystems, like the desert moss Syntrichia caninervis, face extreme light, temperature, and water changes.
- An experiment tested how different UV radiation levels impact the moss's photosynthesis, pigment levels, and stress responses after rehydration.
- Results showed that reduced UV exposure hindered the moss's recovery of photosynthetic efficiency and affected its pigment composition, leading to potential long-term vulnerability to UV damage.
Diverse algae of the red lineage possess chlorophyll a-binding proteins termed LHCR, comprising the PSI light-harvesting system, which represent an ancient antenna form that evolved in red algae and was acquired through secondary endosymbiosis. However, the function and regulation of LHCR complexes remain obscure. Here we describe isolation of a Nannochloropsis oceanica LHCR mutant, named hlr1, which exhibits a greater tolerance to high-light (HL) stress compared to the wild type.
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