Germplasm screening of Musa spp. for resistance to Fusarium oxysporum f. sp cubense tropical race 4 (Foc TR4)
Germplasm screening of Musa spp. for resistance to Fusarium oxysporum f. sp cubense tropical race 4 (Foc TR4)
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芭蕉属种质筛选
DOI：
10.1007/s10658-017-1406-3
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发表时间：
2017
影响因子：
1.8
通讯作者：
Yi Ganjun
中科院分区：
文献类型：
--
作者：
Zuo Cunwu;Deng Guiming;Li Bin;Huo Heqiang;Li Chunyu;Hu Chunhua;Kuang Ruibin;Yang Qiaosong;Dong Tao;Sheng Ou;Yi Ganjun
尖孢镰刀菌。 sp.cubensetropical race 4 (FocTR4) 严重威胁着全球香蕉生产。最近，在加勒比海和莫桑比克发现的FocTR4引起了广泛关注，因为它可能直接关系到非洲和拉丁美洲数百万人的粮食安全。为了鉴定抗性或高度抗性种质，在温室中评估了 129 个种质的 FocTR4 抗性，并在田间评估了其中 100 个。总共有 10 个种质对 FocTR4 具有高度抗性 (HR)；其中包括四种来自 AA 组、两种来自 BB 组、一种东非高地香蕉 (EAHB)、两种大蕉和一种来自香蕉的野生近缘种。其中，彭亨州（AA）、加尔各答4号（AA）和穆萨旅行蚊表现出最高程度的抗性，疾病指数（ID2）小于10，并且FocTR4在田间不能感染它们中的任何一个。此外，来自 AA、AB、AAB、AAAB 和 ABB 群体和野生近缘种的 31 个种质被鉴定为抗性 (R) 种质。所有测试的 EAHB 和车前草均表现出对 FocTR4 感染的抗性或高抗性。我们的研究结果为香蕉育种和研究镰刀菌枯萎病抗性机制提供了宝贵的遗传资源。此外，对 EAHBs 和大蕉的评估为当地香蕉生产者和研究人员种植 EAHBS 和大蕉提供了合理性。
Fusarium oxysporumf. sp.cubensetropical race 4 (FocTR4) has seriously threatened global banana production. Recently, identification ofFocTR4 in the Caribbean and Mozambique has aroused widespread concern because it may be directly related to food security for millions of people in Africa and Latin America. To identify a resistant or highly resistant germplasm, 129 accessions were evaluated forFocTR4 resistance in greenhouses and 100 of them were also assessed in the field. In total, 10 accessions were highly resistant (HR) toFocTR4; these include four from the AA group, two from the BB group, one of the East African highland bananas (EAHBs), two plantains, and one from wild relatives of banana. Of these, Pahang (AA), Calcutta 4 (AA), andMusa itineransexhibited the highest degree of resistance with an index of disease (ID2) less than 10, andFocTR4 could not infect any of them in the field. Furthermore, 31 accessions from AA, AB, AAB, AAAB, and ABB groups and wild relatives were identified as a resistant (R) germplasms. All tested EAHBs and plantains exhibited resistance or high resistance toFocTR4 infection. Our results provide valuable genetic resources for banana breeding and for studying the mechanisms underlying Fusarium wilt resistance. Furthermore, evaluation of EAHBs and plantains provided a rational for local banana producers and researchers to grow EAHBS and plantains.