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Comparative Transcriptomic Analysis of the Interaction between Penicillium expansum and Apple Fruit (Malus pumila Mill.) during Early Stages of Infection.


ABSTRACT: Blue mold, caused by Penicillium expansum, is an important postharvest disease of apple, and can result in significant economic losses. The present study investigated the interaction between P. expansum and wounded apple fruit tissues during the early stages of the infection. Spores of P. expansum became activated one hour post-inoculation (hpi), exhibited swelling at 3 hpi, and the germ tubes were found entering into apple tissues at 6 hpi. RNA-seq was performed on samples of P. expansum and apple fruit tissue collected at 1, 3, and 6 hpi. The main differentially expressed genes (DEGs) that were identified in P. expansum were related to interaction, cell wall degradation enzymes, anti-oxidative stress, pH regulation, and effectors. Apple tissues responded to the presence of P. expansum by activating pathogen-associated molecular pattern (PAMP)-triggered immunity (PTI) at 1 hpi, then activated effector-triggered immunity (ETI) at 3 hpi. This research provides new information on the interaction between P. expansum and apple fruit tissue at an early stage of the infection process.

SUBMITTER: Wang K 

PROVIDER: S-EPMC6920851 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Comparative Transcriptomic Analysis of the Interaction between <i>Penicillium expansum</i> and Apple Fruit (<i>Malus pumila</i> Mill.) during Early Stages of Infection.

Wang Kaili K   Zheng Xiangfeng X   Zhang Xiaoyun X   Zhao Lina L   Yang Qiya Q   Boateng Nana Adwoa Serwah NAS   Ahima Joseph J   Liu Jia J   Zhang Hongyin H  

Microorganisms 20191028 11


Blue mold, caused by <i>Penicillium expansum</i>, is an important postharvest disease of apple, and can result in significant economic losses. The present study investigated the interaction between <i>P. expansum</i> and wounded apple fruit tissues during the early stages of the infection. Spores of <i>P. expansum</i> became activated one hour post-inoculation (hpi), exhibited swelling at 3 hpi, and the germ tubes were found entering into apple tissues at 6 hpi. RNA-seq was performed on samples  ...[more]

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