- Integrated proteomic and metabolomic analyses reveal significant changes in chloroplasts and mitochondria of pepper (Capsicum annuum L.) during Sclerotium rolfsii infection
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Hongdong Liao , Xiangyu Wen , Xuelei Deng , Yonghong Wu , Jianping Xu , Xin Li , Shudong Zhou , Xuefeng Li , Chunhui Zhu , Feng Luo , Yanqing Ma , Jingyuan Zheng
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J. Microbiol. 2022;60(5):511-525. Published online March 31, 2022
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DOI: https://doi.org/10.1007/s12275-022-1603-4
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Infection by Sclerotium rolfsii will cause serious disease and
lead to significant economic losses in chili pepper. In this
study, the response of pepper during S. rolfsii infection was
explored by electron microscopy, physiological determination
and integrated proteome and metabolome analyses. Our results
showed that the stomata of pepper stems were important
portals for S. rolfsii infection. The plant cell morphology
was significantly changed at the time of the fungal hyphae just
contacting (T1) or surrounding (T2) the pepper. The chlorophyll,
carotenoid, and MDA contents and the activities of
POD, SOD, and CAT were markedly upregulated at T1 and
T2. Approximately 4129 proteins and 823 metabolites were
clearly identified in proteome and metabolome analyses, respectively.
A change in 396 proteins and 54 metabolites in
pepper stem tissues was observed at T1 compared with 438
proteins and 53 metabolites at T2. The proteins and metabolites
related to photosynthesis and antioxidant systems in
chloroplasts and mitochondria were disproportionally affected
by S. rolfsii infection, impacting carbohydrate and amino
acid metabolism. This study provided new insights into the
response mechanism in pepper stems during S. rolfsii infection,
which can guide future work on fungal disease resistance
breeding in pepper.
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Dehui Tu, Rong Wen, Jiejie Lv, Zhibing Wu, Chuangjing Liang, Yongping Wang, Xiangmin Tu, Dan Xing Plant Stress.2026; 24: 101575. CrossRef - Sensitivity determination and resistance mechanism of Sclerotium rolfsii to difenoconazole
Chaofan Jiang, Lin Zhou, Mengke Wang, Sirui Shen, Weifeng Cheng, Qingchen Zhao, Kaidi Cui, Leiming He Pest Management Science.2025; 81(6): 2734. CrossRef - The “Coexistence” of Ehrlich pathway and de novo pathway improves 2-PE synthesis in Saccharomyces cerevisiae
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- Transcriptome analysis of differential gene expression in Dichomitus squalens during interspecific mycelial interactions and the potential link with laccase induction
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Zixuan Zhong , Nannan Li , Binghui He , Yasuo Igarashi , Feng Luo
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J. Microbiol. 2019;57(2):127-137. Published online September 13, 2018
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DOI: https://doi.org/10.1007/s12275-019-8398-y
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Interspecific mycelial interactions between white rot fungi
are always accompanied by an increased production of laccase.
In this study, the potential of the white rot fungus Dichomitus
squalens to enhance laccase production during interactions
with two other white rot fungi, Trametes versicolor or Pleurotus
ostreatus, was assessed. To probe the mechanism of laccase
induction and the role that laccase plays during combative
interaction, we analyzed the differential gene expression profile
of the laccase induction response to stressful conditions
during fungal interaction. We further confirmed the expression
patterns of 16 selected genes by qRT-PCR analysis. We
noted that many differentially expressed genes (DEGs) encoded
proteins that were involved in xenobiotic detoxification
and reactive oxygen species (ROS) generation or reduction,
including aldo/keto reductase, glutathione S-transferases,
cytochrome P450 enzymes, alcohol oxidases and dehydrogenase,
manganese peroxidase and laccase. Furthermore, many
DEG-encoded proteins were involved in antagonistic mechanisms
of nutrient acquisition and antifungal properties, including
glycoside hydrolase, glucanase, chitinase and terpenoid
synthases. DEG analyses effectively revealed that laccase
induction was likely caused by protective responses to
oxidative stress and nutrient competition during interspecific
fungal interactions.
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