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Table 1 Identification, validation, and function of 21 protein-coding genes in the B chromosomes from the studied species

From: Long-term persistence of supernumerary B chromosomes in multiple species of Astyanax fish

 

A. scabripinnis

A. paranae

qPCR

 

Gene

gFC

qPCR

SNPs

gFC

qPCR

A. bockmanni

A. fasciatus

Function

amhr2

1.8

1

7

0.9

1

0

1

Gonadal development

bt1a1

1.7

1

0

− 0.4

1

0

0

Unknown

ccnd3

1.2

1

0

−0.1

0

0

0

Cell cycle

ccpg1

0.9

1

9

1.3

1

1

0

Cell cycle

cia30

7.0

1

0

7.9

1

1

1

Mitochondrial

g2e3

5.7

1

0

5.0

1

1

1

Cell cycle

hem2

1.8

1

3

0.9

1

1

0

Biosynthesis

lap4a

1.5

1

0

1.1

1

1

0

Transport

mdm2

2.0

1

0

1.9

1

0

1

Indirect cell cycle regulation

mot1

1.0

1

1

1.6

1

1

0

Transport

msh4

1.6

1

21

1.4

1

1

1

Cell cycle

nobox

1.7

1

5

3.1

1

1

0

Cell cycle

numa1

2.7

1

0

2.5

1

1

1

Cell cycle

nusap1

7.3

1

0

3.9

1

1

1

Cell cycle

rnf17

1.3

1

2

1.9

1

1

1

Indirect cell cycle regulation

sbno2

5.9

1

0

6.8

1

1

1

Transcriptional coregulator

sh3d21

1.5

1

34

1.6

1

1

1

Unknown

simc1

3.1

1

25

2.0

1

1

1

Transcription factor

slc5a8

1.0

1

5

1.6

1

0

0

Transport

tshb

0.7

1

2

1.7

1

0

0

Hormone-mediated signaling pathway

urok

0.4

0

0

2.3

1

0

0

Plasminogen activation

Sum

 

20

114

 

20

14

11

 
  1. NGS analyses were performed for the large metacentric of A. scabripinnis and A. paranae, and, additionally, qPCR tests for their presence on B chromosomes in A. bockmanni and A. fasciatus. Genomic fold change (gFC) was calculated as log2(1B/0B) of mean nucleotide coverage along transcript length in the 1B and 0B libraries. In the qPCR columns, 1 indicates qPCR validation of gene overabundance in 1B genomes compared to 0B ones