Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2021, Vol. 42 ›› Issue (10): 2875-2880.DOI: 10.3969/j.issn.1000-2561.2021.10.017

• Plant Cultivation, Physiology & Biochemistry • Previous Articles     Next Articles

Effects of Low Phosphorus Stress on the Growth and Antioxidant System of Stylosanthes

WANG Jinpeng1, LIAO Li1, LIU Guodao2, LUO Lijuan1, LIU Pandao2,*(), WAMG Zhiyong3,*()   

  1. 1. College of Tropical Crops, Hainan University, Haikou, Hainan 570228, China
    2. Tropical Crop Genetic Resources Institute, Chinese Academy of Tropical Agriculture Sciences / Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture and Rural Affairs, Haikou, Hainan 571101, China
    3. Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants, Ministry of Education / College of Forestry, Hainan University, Haikou, Hainan 570228, China.
  • Received:2020-08-08 Revised:2021-01-04 Online:2021-10-25 Published:2021-11-25
  • Contact: LIU Pandao,WAMG Zhiyong

Abstract:

Using genotype TF291 as the test material, the effects of low phosphorus treatment (5 μmol/L) on the growth, antioxidant and antioxidant enzymes of Stylosanthes were analyzed to explore the response mechanism of the antioxidant system of Stylosanthes under low phosphorus stress. Compared with the control p treatment (250 μmol/L), the low p treatment inhibited the growth of stylox, and the chlorophyll concentration, maximum photochemical efficiency, abovementium and root biomass were significantly reduced (P<0.05). With the increase of the treatment time of low phosphorus, the activity of CAT, POD, SOD, ASP, PAL and the content of flavonoids in leaves were significantly increased at 15 d (P<0.05). The activity of CAT, SOD, ASP, PPO and content of MDA and H2O2 in leaves were significantly increased at 30 d (P<0.05). The study would provide an important basis for further exploring the molecular response mechanism of the antioxidant system of Stylosanthes cylindrica under low phosphorus stress.

Key words: Stylosanthes, reactive oxygen species, low phosphorus stress, antioxidant system

CLC Number: