Journal of Food, Agriculture and Environment

Effect of formulations of Trichoderma harzianum SQR-T037 on the induction of resistance against Fusarium wilt in cucumber

Author(s):

Jun-Yi Tan ^{1, 2}, Xiao-Hou Shao ^{1, 2} *, Li-Hua Chen ^{1, 3}, Li-Na Chen ⁴, Hui-Lian Xu ⁵

Recieved Date: 2012-07-09, Accepted Date: 2012-10-02

Abstract:

Trichoderma spp. has been used in control of various soilborne pathogens but the efficacy is different upon the formulations of the mixture. Therefore, in the present study, three formulations of biocontrol agent Trichoderma harzianum SQR-T037 (SQR-T037): SQR-T037 conidia suspension (TCS), SQR-T037 conidia suspension blent in organic fertilizer (TBF), and SQR-T037 solid-state fermented amino acid organic fertilizer (TFF), were studied for their effect on inducing resistance against Fusarium wilt in cucumber (Cucumis sativus L.) root by pot experiments. In terms of biocontrol efficacy, TCS decreased percent disease index (PDI) to the significantly (p<0.05) lower level of 25.6%, and even lower PDI of 0-4.4% was found in treatments with TBF and TFF added, while PDI of FOC inoculated treatment, control (ino), was as high as 98.9%. Compared to control (ino), activities of defense related enzymes and phenolic compound concentration were significantly (p<0.05) increased by the three biocontrol formulations. Activities of peroxidase, phenylalanine ammonia-lyase, chitinase and β-1,3-glucanase and phenolic compound concentration were found highest (p<0.05) in TFF added treatment. Chlorophyll concentration, root vigor and dry mass of cucumber plant were significantly (p<0.05) increased by the three formulations. Among them, TFF increased root vigor to the highest level (p<0.05). The present study revealed the influence of defense related enzymes and compound by different biocontrol formulations of SQR-T037 in enhancing the disease resistance in cucumber plants against Fusarium wilt. Formulation by solid-state fermentation of amino acid organic fertilizer induced highest resistance. 

Keywords:

Biocontrol, Cucumis sativus, Fusarium oxysporum f. sp. cucumerinum, soilborne pathogen, Trichoderma harzianum

---

Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 3&4
Category: Environment
Pages: 1205-1209

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :