›› 2020, Vol. 32 ›› Issue (10): 1748-1756.DOI: 10.3969/j.issn.1004-1524.2020.10.02

• Crop Science • Previous Articles     Next Articles

Effects of Chlamydomonas debaryana Gor. and Anabaena azotica Ley. on wheat seedling growth under salt stress

BIAN Jianwen1,2, CUI Yan2, YANG Songqi2, LUO Guanghong2,*, MENG Xiangang1,*   

  1. 1. College of Chemistry and Bioengineering, Lanzhou Jiaotong University, Lanzhou 730070, China;
    2. Gansu Microalgae Engineering Technology Research Center, Hexi University, Zhangye 734000, China
  • Received:2020-04-10 Online:2020-10-25 Published:2020-11-16

Abstract: In the present study, wheat seedlings were used as the experimental material, to explore the effects of microalgae (Chlamydomonas debaryana Gor., Anabaena azotica Ley., and their mixture) on the growth of wheat seedlings under salt stress. It was shown that 50 mmol·L-1 NaCl could promote the growth of wheat stem and root. Under 100, 200 mmol·L-1 NaCl, the growth of wheat was inhibited, as the stem length, root length, fresh weight, chlorophyll content and the value of maximal photochemistry efficiency of PSⅡ(Fv/Fm) decreased. The addition of microalgae could alleviate the inhibition of salt stress on wheat growth, by increasing the stem length, root length, fresh weight, chlorophyll content and photosynthesis efficiency of wheat, and enhance the activity of antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD) to remove active oxygen, so as to improve the salt tolerance of wheat.

Key words: microalgae, salt stress, wheat, chlorophyll fluorescence parameter, antioxidant enzymes activity

CLC Number: