Cyclophilin BcCyp2 Regulates Infection-Related Development to Facilitate Virulence of the Gray Mold Fungus <i>Botrytis cinerea</i>

Cyclophilin (Cyp) and Ca<sup>2+</sup>/calcineurin proteins are cellular components related to fungal morphogenesis and virulence; however, their roles in mediating the pathogenesis of <i>Botrytis cinerea</i>, the causative agent of gray mold on over 1000 plant species, remain...

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Main Authors: Jiao Sun, Chen-Hao Sun, Hao-Wu Chang, Song Yang, Yue Liu, Ming-Zhe Zhang, Jie Hou, Hao Zhang, Gui-Hua Li, Qing-Ming Qin
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:International Journal of Molecular Sciences
Subjects:
Online Access:https://www.mdpi.com/1422-0067/22/4/1694
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author Jiao Sun
Chen-Hao Sun
Hao-Wu Chang
Song Yang
Yue Liu
Ming-Zhe Zhang
Jie Hou
Hao Zhang
Gui-Hua Li
Qing-Ming Qin
author_facet Jiao Sun
Chen-Hao Sun
Hao-Wu Chang
Song Yang
Yue Liu
Ming-Zhe Zhang
Jie Hou
Hao Zhang
Gui-Hua Li
Qing-Ming Qin
author_sort Jiao Sun
collection DOAJ
description Cyclophilin (Cyp) and Ca<sup>2+</sup>/calcineurin proteins are cellular components related to fungal morphogenesis and virulence; however, their roles in mediating the pathogenesis of <i>Botrytis cinerea</i>, the causative agent of gray mold on over 1000 plant species, remain largely unexplored. Here, we show that disruption of cyclophilin gene <i>BcCYP2</i> did not impair the pathogen mycelial growth, osmotic and oxidative stress adaptation as well as cell wall integrity, but delayed conidial germination and germling development, altered conidial and sclerotial morphology, reduced infection cushion (IC) formation, sclerotial production and virulence. Exogenous cyclic adenosine monophosphate (cAMP) rescued the deficiency of IC formation of the ∆<i>Bccyp2</i> mutants, and exogenous cyclosporine A (CsA), an inhibitor targeting cyclophilins, altered hyphal morphology and prevented host-cell penetration in the <i>BcCYP2</i> harboring strains. Moreover, calcineurin-dependent (CND) genes are differentially expressed in strains losing <i>BcCYP2</i> in the presence of CsA, suggesting that BcCyp2 functions in the upstream of cAMP- and Ca<sup>2+</sup>/calcineurin-dependent signaling pathways. Interestingly, during IC formation, expression of <i>BcCYP2</i> is downregulated in a mutant losing <i>BcJAR1</i>, a gene encoding histone 3 lysine 4 (H3K4) demethylase that regulates fungal development and pathogenesis, in <i>B. cinerea</i>, implying that BcCyp2 functions under the control of BcJar1. Collectively, our findings provide new insights into cyclophilins mediating the pathogenesis of <i>B. cinerea</i> and potential targets for drug intervention for fungal diseases.
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spelling doaj.art-cf5f35e8c8564ef6927b31dc623d6f112023-12-03T12:51:23ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672021-02-01224169410.3390/ijms22041694Cyclophilin BcCyp2 Regulates Infection-Related Development to Facilitate Virulence of the Gray Mold Fungus <i>Botrytis cinerea</i>Jiao Sun0Chen-Hao Sun1Hao-Wu Chang2Song Yang3Yue Liu4Ming-Zhe Zhang5Jie Hou6Hao Zhang7Gui-Hua Li8Qing-Ming Qin9College of Plant Sciences, Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, ChinaCollege of Plant Sciences, Jilin University, Changchun 130062, ChinaKey Laboratory of Symbolic Computation and Knowledge Engineering, Ministry of Education, College of Computer Science and Technology, Jilin University, Changchun 130012, ChinaCollege of Plant Sciences, Jilin University, Changchun 130062, ChinaCollege of Plant Sciences, Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, ChinaCollege of Plant Sciences, Jilin University, Changchun 130062, ChinaCollege of Plant Sciences, Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, ChinaKey Laboratory of Symbolic Computation and Knowledge Engineering, Ministry of Education, College of Computer Science and Technology, Jilin University, Changchun 130012, ChinaCollege of Plant Sciences, Jilin University, Changchun 130062, ChinaCollege of Plant Sciences, Key Laboratory of Zoonosis Research, Ministry of Education, Jilin University, Changchun 130062, ChinaCyclophilin (Cyp) and Ca<sup>2+</sup>/calcineurin proteins are cellular components related to fungal morphogenesis and virulence; however, their roles in mediating the pathogenesis of <i>Botrytis cinerea</i>, the causative agent of gray mold on over 1000 plant species, remain largely unexplored. Here, we show that disruption of cyclophilin gene <i>BcCYP2</i> did not impair the pathogen mycelial growth, osmotic and oxidative stress adaptation as well as cell wall integrity, but delayed conidial germination and germling development, altered conidial and sclerotial morphology, reduced infection cushion (IC) formation, sclerotial production and virulence. Exogenous cyclic adenosine monophosphate (cAMP) rescued the deficiency of IC formation of the ∆<i>Bccyp2</i> mutants, and exogenous cyclosporine A (CsA), an inhibitor targeting cyclophilins, altered hyphal morphology and prevented host-cell penetration in the <i>BcCYP2</i> harboring strains. Moreover, calcineurin-dependent (CND) genes are differentially expressed in strains losing <i>BcCYP2</i> in the presence of CsA, suggesting that BcCyp2 functions in the upstream of cAMP- and Ca<sup>2+</sup>/calcineurin-dependent signaling pathways. Interestingly, during IC formation, expression of <i>BcCYP2</i> is downregulated in a mutant losing <i>BcJAR1</i>, a gene encoding histone 3 lysine 4 (H3K4) demethylase that regulates fungal development and pathogenesis, in <i>B. cinerea</i>, implying that BcCyp2 functions under the control of BcJar1. Collectively, our findings provide new insights into cyclophilins mediating the pathogenesis of <i>B. cinerea</i> and potential targets for drug intervention for fungal diseases.https://www.mdpi.com/1422-0067/22/4/1694<i>Botrytis cinerea</i>cyclophilincalcineurinmorphogenesisinfection structure formationpathogenesis
spellingShingle Jiao Sun
Chen-Hao Sun
Hao-Wu Chang
Song Yang
Yue Liu
Ming-Zhe Zhang
Jie Hou
Hao Zhang
Gui-Hua Li
Qing-Ming Qin
Cyclophilin BcCyp2 Regulates Infection-Related Development to Facilitate Virulence of the Gray Mold Fungus <i>Botrytis cinerea</i>
International Journal of Molecular Sciences
<i>Botrytis cinerea</i>
cyclophilin
calcineurin
morphogenesis
infection structure formation
pathogenesis
title Cyclophilin BcCyp2 Regulates Infection-Related Development to Facilitate Virulence of the Gray Mold Fungus <i>Botrytis cinerea</i>
title_full Cyclophilin BcCyp2 Regulates Infection-Related Development to Facilitate Virulence of the Gray Mold Fungus <i>Botrytis cinerea</i>
title_fullStr Cyclophilin BcCyp2 Regulates Infection-Related Development to Facilitate Virulence of the Gray Mold Fungus <i>Botrytis cinerea</i>
title_full_unstemmed Cyclophilin BcCyp2 Regulates Infection-Related Development to Facilitate Virulence of the Gray Mold Fungus <i>Botrytis cinerea</i>
title_short Cyclophilin BcCyp2 Regulates Infection-Related Development to Facilitate Virulence of the Gray Mold Fungus <i>Botrytis cinerea</i>
title_sort cyclophilin bccyp2 regulates infection related development to facilitate virulence of the gray mold fungus i botrytis cinerea i
topic <i>Botrytis cinerea</i>
cyclophilin
calcineurin
morphogenesis
infection structure formation
pathogenesis
url https://www.mdpi.com/1422-0067/22/4/1694
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