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Table 2 Transformations of C. cinerea OK130 (ade8-1) with ade8+-vector pCcAde8 alone or, using same batches of protoplasts, in combination with various pYSK7 laccase gene derivatives

From: Selection markers for transformation of the sequenced reference monokaryon Okayama 7/#130 and homokaryon AmutBmut of Coprinopsis cinerea

Plasmid(s)

ade8+-selected transformants collected on*

Total transformants*

1st day

2nd day

3rd day

4th day

Experiment 1: Laccase overexpression

pCcAde8

17 (1)

15

7

2

41

pCcAde8 + pYSK7

26 (8)

20 (13)

7 (3)

7 (1)

60 (25)

pCcAde8 + pYSK-lcc5

14 (2)

27 (8)

25 (5)

10 (5)

76 (20)

pCcAde8 + pYSK-lcc9

10 (4)

23 (10)

23 (5)

8 (0)

64 (19)

Experiment 2: Laccase silencing

pCcAde8

17

20

12

6

55

pCcAde8 + pYSK-lcc9-antisense-1

5 (2)

7 (2)

12 (6)

6 (4)

30 (14)

pCcAde8 + pYSK-lcc9-antisense-2

2 (1)

9 (5)

17 (12)

8 (6)

36 (24)

  1. *Data in brackets of experiment 1 indicate number of clones with > sixfold increased levels of laccase as detected by activity assay in liquid fermentation and native-PAGE; data in brackets of experiment 2 indicate clones with 2- to 11-fold (2‒ΔΔCT) decreases in lcc9 mRNA transcriptional levels as detected by qRT-PCR