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- W4207045007 abstract "Truncated antenna size of photosystems and lower leaf chlorophyll content has been shown to increase photosynthetic efficiency and biomass accumulation in microalgae, cyanobacteria and higher plants grown under high-density cultivation conditions. Here, we have asked whether this strategy is also applicable to a major crop by characterizing the barley mutant happy under the sun 1 (hus1). The pale green phenotype of hus1 is due to a 50% reduction in the chlorophyll content of leaves, owing to a premature stop codon in the HvcpSRP43 gene for the 43-kDa chloroplast Signal Recognition Particle (cpSRP43). The HvcpSRP43 protein is responsible for the uploading of photosystem antenna proteins into the thylakoid membranes, and its truncation results in a smaller photosystem antenna size. Besides a detailed molecular and physiological characterization of the mutant grown under controlled greenhouse conditions, we show that the agronomic performance of hus1 plants, in terms of total biomass production and grain yield under standard field conditions, is comparable to that of control plants. The results are discussed in terms of the potential benefits of the hus1 phenotype, and of natural allelic variants of the HvcpSRP43 locus, with respect to productivity and mitigation of climate change." @default.
- W4207045007 created "2022-01-26" @default.
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- W4207045007 date "2022-04-01" @default.
- W4207045007 modified "2023-10-17" @default.
- W4207045007 title "The barley mutant happy under the sun 1 (hus1): An additional contribution to pale green crops" @default.
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