Table 3.

Recovery rate of ribulose-1,5-bisphosphate carboxylase (RuBPC) and glycolate oxidase (GO) in Pogonatum cirratum subsp. fuscatum and Hypnum plumaeforme exposed to the indicated amount of N addition, with or without low temperature stress after a 10-day-recovery period (+LTS and −LTS respectively).

N treatment (kg N ha−1)		Nitrate teatment		Ammonium treatment
		RuBPC (nmol CO2 mg−1prot min−1)	GO (nmol GA mg−1prot min−1)	RuBPC (nmol CO2 mg−1prot min−1)	GO (nmol GA mg−1prot min−1)
Pogonatum cirratum subsp. fuscatum
−LTS	0	−3.449 ± 0.554a	−1.047 ± 4.151b	−3.449 ± 0.554a	−1.047 ± 4.151
	20	1.797 ± 1.707b	−11.562 ± 4.983a	−1.148 ± 1.127ab	2.108 ± 5.504
	40	0.849 ± 1.085b	−16.975 ± 5.067a	−0.775 ± 2.257ab	−3.082 ± 3.026
	60	−0.071 ± 4.246b	−18.840 ± 1.755a	1.475 ± 1.299b	0.759 ± 1.654
+LTS	0	3.723 ± 1.574	20.017 ± 1.828a	3.723 ± 1.574a	20.017 ± 1.828b
	20	7.284 ± 2.009	24.414 ± 1.075ab	2.428 ± 2.127a	11.732 ± 1.768a
	40	6.700 ± 2.728	29.331 ± 1.948bc	2.672 ± 1.710a	20.298 ± 3.126b
	60	7.737 ± 0.924	34.836 ± 6.797c	15.142 ± 0.559b	27.155 ± 6.423b
Hypnum plumaeforme
−LTS	0	−0.655 ± 1.647b	0.750 ± 0.922ab	−0.655 ± 1.647	0.750 ± 0.922a
	20	−4.876 ± 0.763a	6.665 ± 0.387c	−1.304 ± 2.642	10.531 ± 2.721b
	40	0.246 ± 0.529b	3.189 ± 1.657b	−1.886 ± 1.512	0.238 ± 2.141a
	60	−3.085 ± 1.250a	−1.385 ± 2.975a	−4.237 ± 2.623	−2.838 ± 1.607a
+LTS	0	10.524 ± 1.347b	16.013 ± 1.390b	10.524 ± 1.347a	16.013 ± 1.390a
	20	6.844 ± 1.225a	18.202 ± 3.616b	6.177 ± 1.098b	26.165 ± 1.408b
	40	11.997 ± 0.814b	10.256 ± 2.061a	13.135 ± 1.118 b	20.570 ± 3.377a
	60	11.887 ± 0.748b	5.973 ± 1.543a	12.840 ± 2.526b	16.798 ± 3.253a

Data are presented as means ± S.D. (n = 3). Different letters indicate significant differences between samples exposed to various levels of N addition under each temperature treatment (p < 0.05, one-way ANOVA, LSD test). Data in bold format represent significant differences with 0 (p < 0.05, t-test).