Photosynthetica 2012, 50(3):323-328 | DOI: 10.1007/s11099-012-0035-5

Effect of Glomus mosseae on chlorophyll content, chlorophyll fluorescence parameters, and chloroplast ultrastructure of beach plum (Prunus maritima) under NaCl stress

X. M. Zai1,2,*, S. N. Zhu2, P. Qin3, X. Y. Wang3, L. Che2, F. X. Luo2
1 Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, School of Life Sciences, Huaiyin Normal University, Huaian, PR China
2 Horticulture Dept., Jinling Institute of Technology, Nanjing, P.R. China
3 Halophyte Research Lab, Nanjing University, Nanjing, P.R. China

The present study was undertaken to investigate the effect of Glomus mosseae on chlorophyll (Chl) content, Chl fluorescence parameters and chloroplast ultrastructure of beach plum seedlings under 2% NaCl stress. The results showed that compared to control, both Chl a and Chl b contents of NaCl + G. mosseae treatment were significantly lower during the salt stress, while Chl a/b ratio increased significantly. The increase of minimal fluorescence of darkadapted state (F0), and the decrease of maximal fluorescence of dark-adapted state (Fm) and variable fluorescence (Fv) values were inhibited. The maximum quantum yield of PSII photochemistry (Fv/Fm), the maximum energy transformation potential of PSII photochemistry (Fv/F0) and the effective quantum yield of PSII photochemistry (ΦPSII) increased significantly, especially the latter two variables. The values of the photochemical quenching coefficient (qP) and the nonphotochemical quenching (NPQ) were similar between G. mosseae inoculation and noninoculation. It could be concluded that G. mosseae inoculation could protect the photosystem II (PSII) of beach plum, enhance the efficiency of primary light energy conversion and improve the primitive response of photosynthesis under salinity stress. Meanwhile, G. mosseae inoculation was beneficial to maintain the integrity of thylakoid membrane and to protect the structure and function of chloroplast, which suggested that G. mosseae can alleviate the damage of NaCl stress to chloroplast.

Keywords: beach plum; chlorophyll content; chlorophyll fluorescence; chloroplast ultrastructure; Glomus mosseae; NaCl stress

Received: August 16, 2011; Accepted: March 29, 2012; Published: September 1, 2012Show citation

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Zai, X.M., Zhu, S.N., Qin, P., Wang, X.Y., Che, L., & Luo, F.X. (2012). Effect of Glomus mosseae on chlorophyll content, chlorophyll fluorescence parameters, and chloroplast ultrastructure of beach plum (Prunus maritima) under NaCl stress. Photosynthetica, 50(3), 323-328. doi: 10.1007/s11099-012-0035-5.
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