Physiological responses and proteomic changes reveal insights into Stylosanthes response to manganese toxicity

BMC Plant Biology

Table 1 Chlorophyll fluorescence parameters and photosynthetic indexes of two stylo genotypes under excess Mn treatment

Genotypes	Mn (μM)	SPAD	Fv/Fm	ΦPSII	1-qL	ETR	Pn (μmol m^− 2 s^− 1)	Ci (μmol mol^− 1)	Gs (mol m^− 2 s^− 1)
RY5	5	35.6 ± 1.4a	0.82 ± 0.01a	0.498 ± 0.048a	0.618 ± 0.023a	209.2 ± 20.2a	31.7 ± 2.0a	132.8 ± 7.5a	0.334 ± 0.013a
RY5	400	28.6 ± 2.2b	0.66 ± 0.04b	0.358 ± 0.045b	0.486 ± 0.032b	150.4 ± 19.0b	24.6 ± 1.5b	114.9 ± 2.5b	0.245 ± 0.013b
TF2001	5	34.8 ± 1.7a	0.82 ± 0.01a	0.476 ± 0.050a	0.622 ± 0.044a	199.9 ± 21.0a	32.1 ± 2.2a	130.9 ± 10.6a	0.341 ± 0.048a
TF2001	400	17.8 ± 1.5c	0.42 ± 0.07c	0.222 ± 0.014c	0.338 ± 0.014c	93.2 ± 5.8c	15.4 ± 3.6c	104.5 ± 3.4b	0.161 ± 0.009c

Four chlorophyll fluorescence parameters, including Fv/Fm, ΦPSII, 1-qL and ETR, and three photosynthetic indexes, including Pn, Ci and Gs were measured in stylo after 10 d of 5 or 400 μM MnSO₄ treatments. Data are means ± standard errors (n = 4). The same letter represents no significant difference at the P = 0.05 level

ISSN: 1471-2229