Fungal endophytes-induced abscisic acid is required for flavonoid accumulation in suspension cells of <Emphasis Type="Italic">Ginkgo biloba</Emphasis> |
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| Authors: | Gangping Hao Xihua Du Faxing Zhao Haiwei Ji |
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| Institution: | (1) Department of Biochemistry, Taishan Medical University, 271000 Tai’an, People’s Republic of China;(2) College of Life Sciences, Shandong Normal University, 250014 Jinan, People’s Republic of China;(3) Department of Pharmacy, Jiangxi College of Traditional Chinese Medical, 344000 Fuzhou, People’s Republic of China |
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| Abstract: | Treatment of suspension cells of Ginkgo biloba with fungal endophytes resulted in accumulation of flavonoids, increased abscisic acid (ABA) production and activation of
phenylalanine ammonia-lyase (PAL). Fluridone, an inhibitor of ABA biosynthesis, was effective in inhibiting fungal endophytes-induced
ABA biosynthesis, increase of PAL activity and flavonoids accumulation. Moreover, exogenous application of ABA enhanced PAL
activity and increased accumulation of flavonoids in G. biloba cells with or without fungal endophytes elicitor. These finding suggest a causal relationship between ABA release and both
PAL activity and flavonoid accumulation under fungal endophytes treatment and that ABA is involved in fungal endophytes-induced
flavonoids accumulation in this plant. |
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