The Effect of Root Exudates from Two Transgenic Insect-resistant Cotton Lines on the Growth of Fusarium Oxysporum

Overview

Journal Transgenic Res

Specialty Molecular Biology

Date 2009 Apr 28

PMID 19396562

Citations 10

Authors

Xiao-Gang Li

Biao Liu

Sondre Heia

Dou-dou Liu

Zheng-Min Han

Ke-Xin Zhou

Jin-Jie Cui

Jun-Yu Luo

Yang-ping Zheng

Affiliations

Soon will be listed here.

Abstract

The attenuation of disease resistance in transgenic insect-resistant cotton has become one of the important factors restricting cotton production in China. Two transgenic insect-resistant cotton lines and their parental conventional cotton lines were used as the testing materials. The effects of root exudates of these cotton lines on the spore germination and mycelial growth of Fusarium oxysporum were studied and the components, contents of amino acids and sugars were determined. The results showed that the resistance of the two insect-resistant cotton lines to F. oxysporum was inferior to the parental lines, and that their root exudates promoted fungal spore germination and mycelial growth. Considerable differences in the components and contents of both, amino acids and sugars were found between the root exudates of transgenic cotton lines and their parental lines, where the disease indices were highly correlated with the total amount of sugars in the root exudates.

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