Table 4 GAD, GABA-T and SSADH activity accompanying by GABA accumulation during rose flowers development from bud opening to petal senescence.

From: Phytosulfokine α (PSKα) delays senescence and reinforces SUMO1/SUMO E3 ligase SIZ1 signaling pathway in cut rose flowers (Rosa hybrida cv. Angelina)

Flower development stages

GAD activity

(μmol kg−1 min−1)

GABA-T activity

(μmol kg−1 min−1)

SSADH activity

(μmol kg−1 min−1)

GABA accumulation

(mmol kg−1 FW)

Stage 1

25.86 ± 2.34 d

19.26 ± 1.40 d

9.26 ± 0.74 e

18.53 ± 0.56 d

Stage 2

38.52 ± 3.29 bc

22.46 ± 1.58 cd

13.51 ± 0.87 de

22.46 ± 1.55 cd

Stage 3

55.16 ± 2.95 a

27.41 ± 2.08 bc

17.43 ± 1.29 cd

29.08 ± 3.73 bc

Stage 4

60.14 ± 4.79 a

24.37 ± 1.29 cd

22.71 ± 1.54 c

39.56 ± 3.96 a

Stage 5

42.84 ± 1.82 b

31.24 ± 2.53 b

33.21 ± 1.94 b

33.05 ± 1.90 ab

Stage 6

29.52 ± 2.31 cd

49.45 ± 3.54 a

42.69 ± 3.92 a

28.88 ± 2.40 bc

Significant

**

**

**

**

CV

12.66

13.20

15.13

15.95

LSD (P < 0.05)

9.46

6.81

6.23

8.11

  1. Data shown are mean values of n = 3, and the error bars represent standard errors of the means. Mean values followed by different letters indicate they are different by LSD test at P < 0.05.
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