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Would reducing chlorophyll content result in a higher photosynthesis nitrogen use efficiency in crops?

ABSTRACT: Would reducing chlorophyll content result in a higher photosynthesis nitrogen use efficiency in crops?

PROVIDER: PRJNA1062310 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR27466517_1.fastq.gz	Fastqsanger.gz
	SRR27466517_2.fastq.gz	Fastqsanger.gz
	SRR27466518_1.fastq.gz	Fastqsanger.gz
	SRR27466518_2.fastq.gz	Fastqsanger.gz
	SRR27466519_1.fastq.gz	Fastqsanger.gz

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Would reducing chlorophyll content result in a higher photosynthesis nitrogen use efficiency in crops?

Project description:Decreasing antenna size is regarded as a potential strategy to improve photosynthesis for higher yield potential. Reducing chlorophyll content has been used as a strategy to decrease antenna size. One of the commonly cited benefits of this strategy has been its ability to improve crop nitrogen use efficiency; however, field evidence for this so far is limited. Here we used a mutant, p35s-Ami-YGL1, which has a lower chlorophyll content and also lower antenna size, to study the impacts of modifying leaf chlorophyll content on tissue nitrogen content and nitrogen use efficiency of plants. We show that the nitrogen contents for different tissues, including the seed tissue, on a weight basis were increased in p35s-Ami-YGL1, together with a decrease in C: N. Concurrently, we found that tissue carbon content decreased, while the content of chlorophyll precursors increased. These results suggest that the observed increase in tissue nitrogen content in Ami-YGL1 does not reflect an increase in plant nitrogen absorption or use efficiency, rather it is a result of stunted carbon fixation capacity of plants. The observed increase in seed nitrogen content in Ami-YGL1 suggests a potential strategy to increase seed nitrogen content in crops.

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The Arabidopsis NuA4 histone acetyltransferase complex is required for chlorophyll biosynthesis and photosynthesis. [ChIP-Seq]

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The Arabidopsis NuA4 histone acetyltransferase complex is required for chlorophyll biosynthesis and photosynthesis. [RNA-Seq]

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Light regulation of chlorophyll and glycoalkaloid biosynthesis during tuber greening of potato S. tuberosum

Project description:Potato, S. tuberosum, is one of the most important global crops, but has high levels of waste due to tuber greening under light, which is associated with the accumulation of neurotoxic glycoalkaloids. Here, we have investigated the effect of monochromatic far-red, red, and blue light on the regulation of chlorophyll and glycoalkaloid accumulation in tubers of a commercial variety, King Edward. Transcriptomic analysis of tubers exposed to red, blue, and white light showed that light induction of photosynthesis and tetrapyrrole-related genes grouped into two distinct patterns with one group showing much stronger induction in blue at 6 h and 24 h and a second group showing only red induction at 24 h.

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The Arabidopsis NuA4 histone acetyltransferase complex is required for chlorophyll biosynthesis and photosynthesis.

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Knocking out a negative regulator of photosynthesis 1 (NRP1) increases rice leaf photosynthesis and biomass production in the field

Project description:Improving photosynthesis is a major approach to increase crop yield potential. Here we report a negative transcription factor of photosynthesis, which can be manipulated to increase rice photosynthesis and plant biomass in the field. This transcription factor named negative regulator of photosynthesis 1 (NRP1) (Os07g0471900) which was identified through a co-expression analysis using rice leaf RNA sequencing (RNA-seq) data. The NRP1 showed significantly negative correlation with the expression of many genes involved in photosynthesis. Knocking out NPR1 led to greater photosynthesis and increased biomass in the field, while overexpression of NRP1 decreased photosynthesis and biomass. Transcriptomic data analysis shows that NRP1 can negatively regulate the expression of photosynthetic genes. Protein transactivation experiments show that NRP1 is a transcription activator, implying that NRP1 may indirectly regulate photosynthesis gene expression through an unknown regulator. This study shows that combination of bioinformatics analysis with transgenic testing can be used to identify new regulators to improve photosynthetic efficiency in crops.

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Heterosis of Arabidopsis C24 x Col hybrids is associated with increased photosynthesis capacity.

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