Fig. 1: Expression differentiation of paired homeologous genes between peanut subgenomes and repeat expansion among peanut and diploid ancestor genomes. | Nature Genetics

Fig. 1: Expression differentiation of paired homeologous genes between peanut subgenomes and repeat expansion among peanut and diploid ancestor genomes.

From: The genome of cultivated peanut provides insight into legume karyotypes, polyploid evolution and crop domestication

Fig. 1

a, Widespread expression differentiation of homeologous gene pairs between two subgenomes is shown. Homeologous chromosomes are indicated at the bottom of the figure. b, Density distribution of substitution rates using the paired-end sequences of LTR retrotransposons in the A. hypogaea, A. hypogaea-SubA, A. hypogaea-SubB, A. duranenesis and A. ipaensis genomes. The LTR in A. hypogaea and A. hypogaea-SubA exhibited rapid expansion ~246,700 years ago, but those of A. hypogaea-SubB, A. duranensis and A. ipaensis did so about 0.8922, 1.1206 and 1.0049 Ma, respectively, based on the formula T = S/2 µ (where T is the evolution time, S is the substitution rate here and µ is the 1.64 × 10−8 substitution rate per year; Supplementary Note 3.3.5). The number of LTR retrotransposons and the peak substitution rate for each part are embedded in the figure.

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