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Transcriptomic analysis of Verbena bonariensis leaves in response to low temperature

ABSTRACT: Transcriptomic analysis of Verbena bonariensis leaves in response to low temperature

PROVIDER: PRJNA447925 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6914190_1.fastq.gz	Fastqsanger.gz
	SRR6914190_2.fastq.gz	Fastqsanger.gz
	SRR6914191_1.fastq.gz	Fastqsanger.gz
	SRR6914191_2.fastq.gz	Fastqsanger.gz
	SRR6914192_1.fastq.gz	Fastqsanger.gz

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Transcriptomic analysis of Verbena bonariensis leaves in response to low temperature

Project description:The samples were respectively from three replicates of the cold-stress treatment and the control, then we obtained six cDNA libraries. 271,920 unigenes were produced from 406,641 assembled transcripts. Of these, 42,490 significantly differential expression genes (Corrected P-value <0.05) were obtained, including 20,412 up- and 23,078 down-regulated genes.

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Responses of maize source leaf metabolism to low temperature, low nitrogen and low phosphorus stress

Project description:Abiotic stress causes disturbances in the cellular homeostasis. Re-adjustment of balance in carbon, nitrogen and phosphorus metabolism therefore plays a central role in stress adaptation. However, it is currently unknown which parts of the primary cell metabolism follow common patterns under different stress conditions and which represent specific responses. To address these questions, changes in transcriptome, metabolome and ionome were analyzed in maize source leaves from plants suffering low temperature, low nitrogen (N) and low phosphorus (P) stress. The selection of maize as study object provided data directly from an important crop species and the so far underexplored C4 metabolism. Growth retardation was comparable under all tested stress conditions. The only primary metabolic pathway responding similar to all stresses was nitrate assimilation, which was down-regulated. The largest group of commonly regulated transcripts followed the expression pattern: down under low temperature and low N, but up under low P. Several members of this transcript cluster could be connected to P metabolism and correlated negatively to different phosphate concentration in the leaf tissue. Accumulation of starch under low temperature and low N stress, but decrease in starch levels under low under low P conditions indicated that only low P treated leaves suffered carbon starvation. In conclusion, maize employs very different strategies for management of nitrogen and phosphorus metabolism under stress. While nitrate assimilation was regulated depending on demand by growth processes, phosphate concentrations changed depending on availability, thus building up reserves under excess conditions. Carbon and energy metabolism of the C4 maize leaves were particularly sensitive to P starvation.

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