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E-GEOD-67722

ABSTRACT: ZmDCT2 has a major role in the photosynthetic development of maize

PROVIDER: E-GEOD-67722 | ExpressionAtlas | 2019-05-14

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-GEOD-67722-analysis-methods.tsv	Tabular
	E-GEOD-67722-analytics.tsv	Tabular
	E-GEOD-67722-analytics.tsv.undecorated	Tabular
	E-GEOD-67722-analytics.tsv.undecorated.unrounded	Tabular
	E-GEOD-67722-analytics.tsv.unrounded	Tabular

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Project description:Background: Plant diurnal rhythms are vital environmental adaptations to coordinate internal physiological responses to alternating day-night cycles. A comprehensive view of diurnal biology has been lacking for maize (Zea mays), a major world crop. Methodology: A photosynthetic tissue, the leaf, and a non-photosynthetic tissue, the developing ear, were sampled under natural field conditions. Genome-wide transcript profiling was conducted on a high-density 105K Agilent microarray to investigate diurnal rhythms. The top-most fully expanded leaf from each plant collected. Plants were sampled every 4 hours over 3 days. Our sampling times were: 6 am (dawn), 10 am, 2 pm, 6 pm, 10 pm and 2 am. Tissues were collected from three field reps and within each field rep we collected samples from three individual plants

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Project description:Background: Plant diurnal rhythms are vital environmental adaptations to coordinate internal physiological responses to alternating day-night cycles. A comprehensive view of diurnal biology has been lacking for maize (Zea mays), a major world crop. Methodology: A photosynthetic tissue, the leaf, and a non-photosynthetic tissue, the developing ear, were sampled under natural field conditions. Genome-wide transcript profiling was conducted on a high-density 105K Agilent microarray to investigate diurnal rhythms. The top-most immature ear, 4-5 cm in length, was collected. Plants were sampled every 4 hours over 3 days. Our sampling times were: 6 am (dawn), 10 am, 2 pm, 6 pm, 10 pm and 2 am. Tissues were collected from three field reps and within each field rep we collected samples from three individual plants

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Project description:Exploring the mechanism of C4 photosynthetic differentiation through a unified comparative analysis of maize and rice leaf transcriptomes - rice dataset

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Over-expression of a transcription factor mEmBP-1a increases rice photosynthesis, biomass and yield by regulating the expression of multiple key photosynthesis genes

Project description:Improvement in the photosynthetic efficiency is a major approach to improve crop yield potential. So far, most of the demonstrated cases of photosynthesis improvement was achieved through manipulation of one or a few photosynthesis related genes. Present study found that over-expression of one maize transcription factor, mEmBP-1 gene, led to simultaneously increased expression of nearly all genes in photosynthesis pathway, including genes encoding chlorophyll a and b-binding proteins (Lhca and Lhcb), photosystem II (PsbR3 and PsbW) and PS I reaction center subunits (PsaK and PsaN), genes encoding for chloroplast ATP synthase subunit and electron transport reaction (Fd1 and PC), and also major genes in the Calvin Benson Bassham cycle, Rubisco, GAPDH, FBA, TK and PRK. This increased photosynthesis gene expression resulted in increased leaf chlorophyll pigment, photosynthetic rate, quantum yields, biomass growth and grain yield both in the greenhouse and also in natural field conditions. Using DNA-Protein binding experiment, we found that mEmBP-1a protein can directly bind to the promoter regions of photosynthesis genes, suggesting that the direct binding of mEmBP-1a to the G-box domain of photosynthetic genes upregulates expression of these genes. Hence, this study shows that mEmBP-1a is a major regulator of photosynthesis.

2020-01-08 | GSE143259 | GEO

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