Evidences of inhibited arbuscular mycorrhizal fungal development and colonization in multiple lines of Bt cotton

被引：8

作者：

Chen, Xiu-Hua ^{[1
,2
]}

Wang, Feng-Ling ^{[2
]}

Zhang, Rui ^{[2
]}

Ji, Ling-Ling ^{[2
]}

Yang, Zheng-Lun ^{[2
]}

Lin, Hui ^{[1
]}

Zhao, Bin ^{[1
]}

机构：

[1] Huazhong Agr Univ, State Key Lab Agr Microbiol, Wuhan 430070, Peoples R China

[2] Huazhong Agr Univ, Key Lab Arable Land Conservat Middle & Lower Reac, Minist Agr, Coll Resources & Environm, Wuhan 430070, Peoples R China

来源：

AGRICULTURE ECOSYSTEMS & ENVIRONMENT | 2016年 / 230卷

基金：

中国国家自然科学基金;

关键词：

Bt cotton; Arbuscular mycorrhizal fungi; Pre-symbiotic hyphal differentiation; Colonization; PHOSPHATE TRANSPORTER; SPORE GERMINATION; HYPHAL GROWTH; PLANTS; CORN; IMPACT; ROOTS; COMMUNITIES; EXPRESSION; SYMBIOSES;

D O I：

10.1016/j.agee.2016.05.008

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

A "sandwich system" was used to investigate the effect of transgenic Bacillus thuringiensis (Bt) cotton (Gossypium hirsutum L.) on early stages of arbuscular mycorrhizal (AM) fungal life cycle. Spore germination and pre-symbiotic hyphal differentiation of AM fungus Rhizophagus irregularis were decreased in the rhizosphere of transgenic Bt cotton isolines (Jin26, GK12 and Jin44) compared with in that of their corresponding parental non-transgenic isolines (Jin7, Si3 and Ji492); and the appressorium number, colonization intensity and arbuscule abundance were lower in Bt plant roots. More collapsed arbuscules were also observed in Bt roots. The results of statistical analysis demonstrate that Bt-trait significantly contributes to the inhibition of pre-symbiotic development and AM fungal colonization, which might be attributed to either Bt toxin toxicity or interference of signal perception between AM fungi and the hosts. The specific mechanism requires further study. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：169 / 176

页数：8

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