Fig 1.
Genome size and GC content in the twelve species studied.
(A) Total nucleotide number in the twelve plants genome sequences. (B) The percentage of C/G in the twelve plants genome sequences.
Fig 2.
The SSRs density in the twelve plants.
Fig 3.
The percentages of SSRs with different combinations in the twelve plant genomes.
(A)The SSRs percentage of mononucleotide repeats. (B) The SSRs percentage of dinucleotide repeats. (C) The SSRs percentage of trinucleotide repeats.
Fig 4.
The percentages of mononucleotide SSRs with different repeat number in twelve plant genomes.
6: repeat number 6, 7 and 8; 9: repeat number 9, 10 and 11; etc.
Fig 5.
The percentages of dinucleotide SSRs with different repeat number in twelve plant genomes.
Fig 6.
The percentages of trinucleotide SSRs with different repeat number in twelve plant genomes.
Fig 7.
Cluster analysis of SSR percentage based on dinucleotide combination and trinucleotide combination in algal and terrestrial plants genomes.
(A) Cluster analysis of dinucleotide combination percentage. (B) Cluster analysis of trinucleotide combination percentage. We chose D. melanogaster as a control.
Fig 8.
Variation of different combinations of SSRs.
(A)The A/T frequency changed with different repeat number in twelve plants genome sequences. (B)The AT/TA frequency changed with different repeat number in monocotyledon genome sequences. (C) AT/TA frequency changed with different repeat number in dicotyledon genome sequences. (D) CG/GC frequency changed with different repeat number in twelve plants genome sequences. Fig8A and D with the same legend.