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Behavior of Italian Lemon Rootstocks towards Mal Secco Leaf Infection with Tunisian Fungus Phoma tracheiphila in Controlled Environment | OMICS International | Abstract
ISSN: 2157-7471

Journal of Plant Pathology & Microbiology
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Research Article

Behavior of Italian Lemon Rootstocks towards Mal Secco Leaf Infection with Tunisian Fungus Phoma tracheiphila in Controlled Environment

Sana Ziadi1*, Samir Chebil1, Angela Ligorio2, Antonio Ippolito2 and Ahmed Mliki1

1Laboratory of Plants Molecular Physiology, Centre of Biotechnology Borj-Cedria, BP 901 Hammam-Lif, 2050, Tunisia

2Department of Agro Forestry and Environmental Biology and Chemistry, University of Bari, Via G Amendola 165/A, Bari 70126, Italy

*Corresponding Author:
Sana Ziadi
Laboratory of Plants Molecular Physiology
Centre of Biotechnology Borj-Cedria
BP 901 Hammam-Lif, 2050, Tunisia
Fax: +216 79412638
E-mail: [email protected]

Received date: October 21, 2012; Accepted date: November 27, 2012; Published date: December 01, 2012

Citation: Ziadi S, Chebil S, Ligorio A, Ippolito A, Mliki A (2012) Behavior of Italian Lemon Rootstocks towards Mal Secco Leaf Infection with Tunisian Fungus Phoma tracheiphila in Controlled Environment. J Plant Pathol Microb 3:150. doi:10.4172/2157-7471.1000150

Copyright: © 2012 Ziadi S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Studying behaviors of four Italian lemon rootstocks towards Mal Secco leaf infection with the fungus Phoma tracheiphila, isolated in Tunisia in controlled environment, is the aim of this research work. It involves prospection of infected lemons fields in Tunisia, isolation and morphological identification of the fungus, preparation of inoculum and infection of leaves of four rootstocks. Following the artificial inoculation in three assessments after 10, 20 and 30 days post inoculation (dpi) by observing the appearance of disease symptoms, counting the percentage of positive inoculation and determining the average disease intensity according to the leaf empirical scale. All these parameters indicated about the behaviour of the rootstock towards disease in addition to allowing the classification of the four lemon rootstocks according to susceptibility to Mal Secco. Therefore Volkameriana which showed great sensitive behavior was considered as susceptible rootstock. However, Sour Orange showed an intermediate susceptibility to Mal Secco infection and was classified as tolerant rootstock. Nevertheless Flying Dragon and Citrange Troyer were considered as resistant rootstocks after showing a great resistance to the leaf infection by Phoma tracheiphila.


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