Fig. 8: Global eccDNA dynamics under optimal growth and nutritional stress conditions in rice shoot tissue. | Nature Communications

Fig. 8: Global eccDNA dynamics under optimal growth and nutritional stress conditions in rice shoot tissue.

From: Adaptive dynamics of extrachromosomal circular DNA in rice under nutrient stress

Fig. 8: Global eccDNA dynamics under optimal growth and nutritional stress conditions in rice shoot tissue.The alt text for this image may have been generated using AI.

eccDNAs are derived across the rice genome with single-fragment as the typical predominant class. Gene-overlapped eccDNAs (ecGenes), Transposable Element-overlapped eccDNAs (ecTEs), and full-length repeat unit-overlapped eccDNAs (full-length ecRepeatUnits) show dynamic changes during rice optimal growth, and in response to short-term and long-term low nitrogen (LN) and low phosphorus (LP) stresses. The accumulation of identified two-fragment and five-fragment eccDNAs (2 f and 5 f eccDNAs) is induced by nutritional stresses. Furthermore, a putative eccDNA origin mechanism based on Homologous Recombination (HR) among LTRs has been proposed by analyzing identified 2 f eccDNAs.

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