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Root system traits impact early fire blight susceptibility in apple (Malus × domestica).

ABSTRACT: BACKGROUND:Although it is known that resistant rootstocks facilitate management of fire blight disease, incited by Erwinia amylovora, the role of rootstock root traits in providing systemic defense against E. amylovora is unclear. In this study, the hypothesis that rootstocks of higher root vigor provide higher tolerance to fire blight infection in apples is tested. Several apple scion genotypes grafted onto a single rootstock genotype and non-grafted 'M.7' rootstocks of varying root vigor are used to assess phenotypic and molecular relationships between root traits of rootstocks and fire blight susceptibility of apple scion cultivars. RESULTS:It is observed that different root traits display significant (p?

SUBMITTER: Singh J 

PROVIDER: S-EPMC6929320 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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Root system traits impact early fire blight susceptibility in apple (Malus × domestica).

Singh Jugpreet J   Fabrizio Jack J   Desnoues Elsa E   Silva Julliany Pereira JP   Busch Wolfgang W   Khan Awais A  

BMC plant biology 20191223 1

<h4>Background</h4>Although it is known that resistant rootstocks facilitate management of fire blight disease, incited by Erwinia amylovora, the role of rootstock root traits in providing systemic defense against E. amylovora is unclear. In this study, the hypothesis that rootstocks of higher root vigor provide higher tolerance to fire blight infection in apples is tested. Several apple scion genotypes grafted onto a single rootstock genotype and non-grafted 'M.7' rootstocks of varying root vig  ...[more]

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