First‐report of the inhibition of arbuscular mycorrhizal infection of Pisum sativum by specific and irreversible inhibition of polyamine biosynthesis or by gibberellic acid treatment

FEBS Letters

Martin-Tanguy, J.¹  El Ghachtouli, N.²  Gianinazzi, S.²  Paynot, M.² 

[1] Université de Rennes I, Laboratoire de Biologie Végétale, Avenue du Général Leclerc, 35042 Rennes Cedex, France;Laboratoire de Phytoparasitologie INRA-CNRS, SGAP, INRA, BV 1540, 21034 Dijon Cedex, France

关键词: Arbuscular mycorrhizal infection;    Putrescine;    Polyamine biosynthesis inhibitor;    Gibberellic acid;    Pisum sativum;    Glomus mosseae;   

DOI  :  10.1016/0014-5793(96)00379-1

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

DFMO (α-dl-difluoromethylornithine), a specific irreversible inhibitor of ornithine decarboxylase (ODC), a polyamine biosynthetic pathway enzyme, strongly inhibits root growth and arbuscular mycorrhizal infection of Pisum sativum (P56 myc⁺, isogenic mutant of cv. Frisson). This inhibition is reversed when exogenous polyamine (putrescine) is included in the DFMO treatment, showing that the effect of DFMO on arbuscular mycorrhizal infection is indeed due to putrescine limitation and suggesting that ODC may have a role in root growth and mycorrhizal infection. However, treatment with gibberellic acid (GA3) which increased root titers of polyamines strongly inhibited arbuscular mycorrhizal development. The possible role of polyamines in the regulation of the development of arbuscular mycorrhizal infection is discussed.

【 授权许可】

Unknown