Figure Legends
Fig. 1. The effects of the Montmorillonite (Mt) and Palygorskite (Pal)
on (A) the maximum quantum yields of photosystem II reaction center and
(B) electron transport rate. The vertical bar represents the standard
deviation of triplicate samples.
Fig. 2. A: P uptake of Chlamydomonas reinhardtii cultured at 3.15
mg/L and 31.5 mg/L P concentrations. B: The number of counts (per
107 cells) of C. reinhardtii after four days
incubation. *P<0.05. C: CO2 emission (per
1010 cells) ofC. reinhardtii . The error
bars represent the standard deviation based on three parallel
experiments. *P<0.05; NS, not significant.
Fig. 3. Three-dimensional excitation-emission matrix fluorescence
spectra of the supernatant under different treatments. A: the four
fluorescent components (C1-C4) identified by PARAFAC analysis; B:
relative abundances of fluorescent components under different
treatments.
Fig. 4. The content of proteins (A), polysaccharides (B), and
photosynthetic pigments (C) after four days of incubation.
Fig. 5. ATR-IR spectra of C. reinhardtii cells and two minerals.
200Mt, 500Mt, 200Pal, and 500Pal: spectra of the algal cells incubated
with 200, 500 mg/L Mt/Pal. Mt and Pal: spectra of two minerals. 0:
spectra of the algal cells.
Fig. 6. A and D: SEM images of Mt
(A) and Pal (D). B, C, E, and F: SEM imaging on the algae cells under
200 (B&E), 500 (C&F) Mt/Pal.
Fig. 7. TEM images of C. reinhardtii cells incubated with
200 (A), 500 (B) mg/L Mt and 200
(C), 500 (D) mg/L Pal of the medium in all the treatments.
Fig. 8. Main metabolic pathway network related to differentially
expressed proteins (DEPs). The color bar indicates the up-down
adjustment of DEPs (C for CK; P for Pal (200 mg/L); M for Mt (200
mg/L)). IF2CP, CPLS1: genes related to the transformation of precursor
substances into chloroplasts; CAB4, CAB7 and CHLG: genes related to
chlorophyll synthesis; SAMC1 and odhA: genes related to cellular
respiration; psbH and OHP1: genes related to PhotosystemII synthesis.