Journal of Tropical Oceanography ›› 2010, Vol. 29 ›› Issue (3): 65-70.doi: 10.11978/j.issn.1009-5470.2010.03.065cstr: 32234.14.j.issn.1009-5470.2010.03.065

• Marine biology • Previous Articles     Next Articles

Effects of NaHSO3 on the growth and contents of photosynthetic pigments in Dunaliella salina

CHENG Jian-feng1,2, HU Fen-hong1, SHEN Yun-gang1   

  1. 1. Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, China Academy of Sciences, Shanghai 200032, China; 2. College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
  • Received:2008-01-25 Revised:2008-07-02 Online:2010-07-01 Published:2010-05-24
  • Contact: 沈允钢(1927—), 男, 研究员, 中国科学院院士, 主要从事光合作用研究。 E-mail:ygshenl@sippe.ac.cn
  • About author:程建峰(1972—), 男, 江西省横峰县人, 博士后, 副教授, 主要从事植物生理生态研究。E-mail: chjfkarl@163.com
  • Supported by:

    中国科学院创新基金(101CK0104)

Abstract:

Bisulfite (NaHSO3) is a substance to accelerate plant cyclic photophosphorylation that can be used safely and environmentally friendly. In order to optimize the nutrients formula, decrease the production cost and improve the biomass and pigment accumulation of Dunaliella salina, the authors investigated the effects of different concentrations (0.00?0.40mM•L-1) of NaHSO3 on the biomass and photosynthetic pigment contents. The results showed that NaHSO3 could significantly improve the growth, contents of chlorophyll (Chl) a, Chl b, Chl (a+b), carotenoid (Car) and ratio of Chl to Car. The effects firstly increased and then decreased with the increase of concentration. Accelerating effects under low concentrations (<0.10mM•L-1) were better than those under high concentrations (0.10?0.40mM•L-1), and the maximum accelerating effects were reaches at 0.07mM•L-1. NaHSO3 could increase Chl b content more than Chl a content, which caused the reduction of Chl a content relative to Chl b content; the effects firstly decreased and then increased with the increase of concentration, reducing effects under low concentrations (<0.1mM•L-1) were better than those under high concentrations (0.10?0.40mM•L-1), and the minimum reducing effect was achieved at 0.07mM•L-1. The correlations of biomass (Y) to contents of photosynthetic pigments and between contents of photosynthetic pigments were significant or markedly significant, with the highest correlation of Chl b (XChl.b) to biomass (Y=0.284XChl.b-0.883 (R2=0.994**)) and the next of Chl to biomass (Y=0.100XChl-2.022 (R2=0.993**)), which provided an indirect index to measure the growth of Dunaliella salina in every moment.

Key words:  Dunaliella salina, NaHSO3, growth, biomass, photosynthetic pigment