The Key Role of Peltate Glandular Trichomes in Symbiota Comprising Clavicipitaceous Fungi of the Genus Periglandula and Their Host Plants

Toxins

Ulrike Steiner¹  Sabine Hellwig³  Mahalia A. Ahimsa-Müller³  Nicola Grundmann²  Shu-Ming Li²  Christel Drewke³  Eckhard Leistner³ 

[1] Institut für Nutzpflanzenwissenschaften und Ressourcenschutz, Universität Bonn, Nußallee 9, D-53115 Bonn, Germany; E-Mail:;Institut für Pharmazeutische Biologie und Biotechnologie, Universität Marburg, Deutschhausstraße 17 1/2, D-35037 Marburg, Germany; E-Mails:;Institut für Pharmazeutische Biologie, Universität Bonn, Nußallee 6, D-53115 Bonn, Germany; E-Mails:

关键词: sesquiterpenes;    ergot alkaloids;    peltate glandular trichomes;    bidirectional secretion;    Periglandula;    Convolvulaceae;   

DOI  :  10.3390/toxins7041355

来源: mdpi

【 摘 要 】

Clavicipitaceous fungi producing ergot alkaloids were recently discovered to be epibiotically associated with peltate glandular trichomes of Ipomoea asarifolia and Turbina corymbosa, dicotyledonous plants of the family Convolvulaceae. Mediators of the close association between fungi and trichomes may be sesquiterpenes, main components in the volatile oil of different convolvulaceous plants. Molecular biological studies and microscopic investigations led to the observation that the trichomes do not only secrete sesquiterpenes and palmitic acid but also seem to absorb ergot alkaloids from the epibiotic fungal species of the genus Periglandula. Thus, the trichomes are likely to have a dual and key function in a metabolic dialogue between fungus and host plant.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.