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Transcriptomic analysis of resistant and susceptible banana corms in response to infection by Fusarium oxysporum f. sp. cubense tropical race 4

文献类型： 外文期刊

作者： Zhang, Lei 1 ; Cenci, Alberto 4 ; Rouard, Mathieu 4 ; Zhang, Dong 5 ; Wang, Yunyue 1 ; Tang, Weihua 5 ; Zheng, Si-Jun 2 ;

作者机构： 1.Yunnan Agr Univ, State Key Lab Conservat & Utilizat Bioresources Y, Minist Educ, Key Lab Agr Biodivers Plant Dis Management, Kunming 650201, Yunnan, Peoples R China

2.Yunnan Acad Agr Sci, Agr Environm & Resources Inst, Kunming 650205, Yunnan, Peoples R China

3.Biovers Int, 2238 Beijing Rd, Kunming 650205, Yunnan, Peoples R China

4.Biovers Int, Parc Sci Agropolis 2, F-34397 Montpellier 5, France

5.Chinese Acad Sci, Natl Key Lab Plant Mol Genet, CAS Ctr Excellence Mol Plant Sci, Inst Plant Physiol & Ecol,Shanghai Inst Biol Sci, Shanghai 200032, Peoples R China

6.Dehong Agr Technol Extens Ctr, Mangshi 678400, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2019 年 9 卷

页码：

收录情况： SCI

摘要： Fusarium wilt disease, caused by Fusarium oxysporum f. sp. cubense, especially by tropical race 4 (Foc TR4), is threatening the global banana industry. Musa acuminata Pahang, a wild diploid banana that displays strong resistance to Foc TR4, holds great potential to understand the underlying resistance mechanisms. Microscopic examination reports that, in a wounding inoculation system, the FocTR4 infection processes in roots of Pahang (resistant) and a triploid cultivar Brazilian (susceptible) were similar by 7 days post inoculation (dpi), but significant differences were observed in corms of both genotypes at 14 dpi. We compare transcriptomic responses in the corms of Pahang and Brazilian, and show that Pahang exhibited constitutive defense responses before FocTR4 infection and inducible defense responses prior to Brazilian at the initial FocTR4 infection stage. Most key enzymatic genes in the phenylalanine metabolism pathway were up-regulated in Brazilian, suggesting that lignin and phytotoxin may be triggered during later stages of FocTR4 infection. This study unravels a few potential resistance candidate genes whose expression patterns were assessed by RT-qPCR assay and improves our understanding the defense mechanisms of Pahang response to FocTR4.

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