Table 1 The information of each group in this study.

1

control

nitrogen repletion

BG-11 medium (1.5 g·L^− 1 NaNO₃)

N1.5 (Ncon)

2

treatment

nitrogen limitation

1 g·L^− 1 NaNO₃

N1

3

treatment

nitrogen limitation

0.5 g·L^− 1 NaNO₃

N0.5

4

treatment

nitrogen starvation

0 g·L^− 1 NaNO₃

N0