期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 38, 期 12, 页码 949-956出版社
GAUTHIER-VILLARS/EDITIONS ELSEVIER
DOI: 10.1016/S0981-9428(00)01208-0
关键词
alfalfa suspension culture; auxin; 2-aminoindan-2-phosphonic acid; IAA-oxidase; peroxidase; phenylpropanoid biosynthesis
The inhibition of phenylpropanoid biosynthesis: by 2-aminoindan-2-phosphonic acid (AIP) in alfalfa suspension cultures (Medicago sativa L.) was associated with a marked decline in the content of cinnamic acid derivatives during the whole subculture interval. The levels of all investigated forms of phenolic acids in AIP-treated cells were lower than those of control with the exception of free phenolic acids on days 1 and 2. The dynamics of free IAA content in AIP-treated cells was similar to that of the control but its peak was significantly lower. The auxin content in AIP-treated cells on days 9 and 11 represented only 35 and 40 % of control values, respectively. AIP-treatment stimulated soluble peroxidase (EC 1.11.1.7) activity in the first 2 d after cell inoculation. Time-course of soluble IAA-oxidase activities was similar to that of soluble peroxidases (with the exception of the drop in peroxidase activity on day 3) but beginning day 6, the enzyme activities in AIP-treated cells were significantly lower until the end of the subculture interval. (C) 2000 Editions scientifiques et medicales Elsevier SAS.
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