Effects of 5-Aminolevulinic Acid on Chlorophyll, Photosynthesis, Soluble Sugar and Flavonoids of Ginkgo biloba

  • Feng XU Yangtze University, College of Horticulture and Gardening, Jingzhou 434025,
  • Shuiyuan CHENG Huanggang Normal University, Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, Huanggang 438000
  • Jun ZHU Zhongshan Torch Polytechnic, Department of Bio-medicine, Zhongshan 528436
  • Weiwei ZHANG Yangtze University, College of Horticulture and Gardening, Jingzhou 434025,
  • Yan WANG Yangtze University, College of Horticulture and Gardening, Jingzhou 434025,

Abstract

The flavonoid content determines the quality of Ginkgo biloba that can be increased by using of plant growth regulators. The objective of study was to observe the effect of 5-aminolevulinic acid (ALA), a key precursor in the biosynthesis of porphyrins and a new plant growth regulator, on photosynthetic rate, chlorophyll and soluble sugar content, flavonoid accumulation, and flavonoid enzyme activity in G. biloba leaves. The ginkgo seedlings were grown in greenhouse conditions under low levels (10 and 100 mg l-1) of foliar application of ALA. Photosynthetic rates of leaves increased significantly at day 4 in response to both ALA concentrations and remained elevated as compared to control for further 12 days. Chlorophyll and soluble sugar contents were significantly increased by day 4 and continued to increase by day 16; however, Chl a/b ratio remained unchanged. Total polyphenols, flavonoids, and anthocyanins, phenylalanine ammonia-lyase (PAL), chalcone synthase (CHS) and chalcone isomerase (CHI) activities were increased from day 4 to 16 after ALA treatment. The increase in chlorophyll and soluble sugar contents, and activities of flavonoid enzymes (PAL, CHS and CHI) were likely to be closely associated with improvement of the accumulation of total polyphenols, flavonoids, anthocyanins and advance of leaf quality by ALA treatment. Foliar treatment with a low concentration of ALA therefore, might provide a useful means of improving pharmacological properties of G. biloba leaves.

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Author Biographies

Feng XU, Yangtze University, College of Horticulture and Gardening, Jingzhou 434025,
College of Horticulture and Gardening
Shuiyuan CHENG, Huanggang Normal University, Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization, Huanggang 438000
College of Life Science and Engineering
Jun ZHU, Zhongshan Torch Polytechnic, Department of Bio-medicine, Zhongshan 528436
Department of Bio-medicine
Weiwei ZHANG, Yangtze University, College of Horticulture and Gardening, Jingzhou 434025,
College of Horticulture and Gardening
Yan WANG, Yangtze University, College of Horticulture and Gardening, Jingzhou 434025,
College of Horticulture and Gardening
Published
2011-05-30
How to Cite
XU, F., CHENG, S., ZHU, J., ZHANG, W., & WANG, Y. (2011). Effects of 5-Aminolevulinic Acid on Chlorophyll, Photosynthesis, Soluble Sugar and Flavonoids of Ginkgo biloba. Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 39(1), 41-47. https://doi.org/10.15835/nbha3915880
Section
Research Articles