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Zea mays

ABSTRACT: Effects of exogenous NAA on maize roots under low potassium stress

PROVIDER: PRJNA810588 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18233439_1.fastq.gz	Fastqsanger.gz
	SRR18233439_2.fastq.gz	Fastqsanger.gz
	SRR18233440_1.fastq.gz	Fastqsanger.gz
	SRR18233440_2.fastq.gz	Fastqsanger.gz
	SRR18233441_1.fastq.gz	Fastqsanger.gz

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Project description:The goal of this work was to investigate the influence of low red to far-red (R:FR) signals generated by a biological weedy and an artificial source of far-red light on the nitrate assimilation pathway in maize. In the absence of direct resource competition, far-red light reflected from neighboring weeds compromises light quality (red to far-red ratio; R/FR) and causes a wide range of morphological and physiological responses at early growth stages of crop plants. This study has investigated the effects of low R/FR light signals on nitrate assimilation in maize seedlings. The transcript levels of genes, metabolites, and activities of enzyme in the nitrate assimilation pathway under a biological and a simulated low R:FR light environment were compared with a high R:FR control environment. Low R:FR signals stimulated nitrate accumulation in maize leaves, which did not appear to result from the upregulation of nitrate transporter genes. A significant reduction in ferredoxin-dependent glutamine:2-oxoglutarate aminotransferase activity appears to play a major role in nitrate accumulation under low R:FR light environments, while activities of other enzymes of the nitrate assimilation pathway remain unchanged.

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