Title |
The beneficial fungus Piriformospora indica protects Arabidopsis from Verticillium dahliaeinfection by downregulation plant defense responses
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Published in |
BMC Plant Biology, October 2014
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DOI | 10.1186/s12870-014-0268-5 |
Pubmed ID | |
Authors |
Chao Sun, Yongqi Shao, Khabat Vahabi, Jing Lu, Samik Bhattacharya, Sheqin Dong, Kai-Wun Yeh, Irena Sherameti, Binggan Lou, Ian T Baldwin, Ralf Oelmüller |
Abstract |
Background Verticillium dahliae (Vd) is a soil-borne vascular pathogen which causes severe wilt symptoms in a wide range of plants. The microsclerotia produced by the pathogen survive in soil for more than 15 years.ResultsHere we demonstrate that an exudate preparation induces cytoplasmic calcium elevation in Arabidopsis roots, and the disease development requires the ethylene-activated transcription factor EIN3. Furthermore, the beneficial endophytic fungus Piriformospora indica (Pi) significantly reduced Vd-mediated disease development in Arabidopsis. Pi inhibited the growth of Vd in a dual culture on PDA agar plates and pretreatment of Arabidopsis roots with Pi protected plants from Vd infection. The Pi-pretreated plants grew better after Vd infection and the production of Vd microsclerotia was dramatically reduced, all without activating stress hormones and defense genes in the host.ConclusionsWe conclude that Pi is an efficient biocontrol agent that protects Arabidopsis from Vd infection. Our data demonstrate that Vd growth is restricted in the presence of Pi and the additional signals from Pi must participate in the regulation of the immune response against Vd. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Unknown | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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United States | 1 | 1% |
France | 1 | 1% |
Brazil | 1 | 1% |
Unknown | 94 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 22 | 23% |
Researcher | 17 | 18% |
Student > Master | 13 | 13% |
Student > Doctoral Student | 9 | 9% |
Student > Bachelor | 5 | 5% |
Other | 14 | 14% |
Unknown | 17 | 18% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 56 | 58% |
Biochemistry, Genetics and Molecular Biology | 8 | 8% |
Engineering | 4 | 4% |
Environmental Science | 2 | 2% |
Computer Science | 1 | 1% |
Other | 6 | 6% |
Unknown | 20 | 21% |