1
|
Lv H, Cui C, Wang Z, Liu Y, Liu S, Qi T, Li Y, Zhao Y. Anti-mildew and fresh-keeping effect of Lactiplantibacillus paraplantarum P3 cell-free supernatant on fresh in-shell peanuts during storage process. Int J Food Microbiol 2024; 418:110719. [PMID: 38688186 DOI: 10.1016/j.ijfoodmicro.2024.110719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 03/28/2024] [Accepted: 04/23/2024] [Indexed: 05/02/2024]
Abstract
Lactiplantibacillus paraplantarum P3 (L. paraplantarum P3) cell-free supernatant (CFS) with good antifungal effect was sprayed on fresh in-shell peanuts stored at 5 °C and 30 °C to explore its effect on the microorganisms and quality of fresh in-shell peanuts during storage process. Results showed that L. paraplantarum P3 CFS effectively maintained good quality of fresh in-shell peanuts by not only reducing fungi amount and the mildew rate, but also improving the morphology, color and flavor. Besides, L. paraplantarum P3 CFS activated plant mitogen-activated protein kinase signaling pathway and plant hormone signaling pathway to produce more ethylene, gibberellin regulatory proteins and other substances to enhance plant resistance to pathogenic microorganisms. L. paraplantarum P3 CFS could also induce the biosynthesis of glycerophospholipid and arginine to increase the stress resistance of fresh peanuts. This study provides research data for the application of L. paraplantarum P3 CFS in the preservation and antimildew of fresh in-shell peanuts.
Collapse
Affiliation(s)
- Haoxin Lv
- Food Engineering Technology Research Center/Key Laboratory of Henan Province, Henan University of Technology, Zhengzhou 450001, Henan Province, China; School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, Henan Province, China
| | - Chaoyue Cui
- Food Engineering Technology Research Center/Key Laboratory of Henan Province, Henan University of Technology, Zhengzhou 450001, Henan Province, China; School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, Henan Province, China
| | - Zubin Wang
- Food Engineering Technology Research Center/Key Laboratory of Henan Province, Henan University of Technology, Zhengzhou 450001, Henan Province, China; School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, Henan Province, China
| | - Yijun Liu
- Food Engineering Technology Research Center/Key Laboratory of Henan Province, Henan University of Technology, Zhengzhou 450001, Henan Province, China; School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, Henan Province, China
| | - Shichang Liu
- Food Engineering Technology Research Center/Key Laboratory of Henan Province, Henan University of Technology, Zhengzhou 450001, Henan Province, China; School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, Henan Province, China
| | - Tianjie Qi
- Food Engineering Technology Research Center/Key Laboratory of Henan Province, Henan University of Technology, Zhengzhou 450001, Henan Province, China; School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, Henan Province, China
| | - Yanfei Li
- Food Engineering Technology Research Center/Key Laboratory of Henan Province, Henan University of Technology, Zhengzhou 450001, Henan Province, China; School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, Henan Province, China
| | - Yan Zhao
- Food Engineering Technology Research Center/Key Laboratory of Henan Province, Henan University of Technology, Zhengzhou 450001, Henan Province, China; School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, Henan Province, China.
| |
Collapse
|
2
|
Yin K, Cui G, Bi X, Liang M, Hu Z, Deng YZ. Intracellular polyamines regulate redox homeostasis with cAMP-PKA signalling during sexual mating/filamentation and pathogenicity of Sporisorium scitamineum. MOLECULAR PLANT PATHOLOGY 2024; 25:e13393. [PMID: 37814404 PMCID: PMC10782646 DOI: 10.1111/mpp.13393] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 09/17/2023] [Indexed: 10/11/2023]
Abstract
Sugarcane smut caused by Sporisorium scitamineum seriously impairs sugarcane production and quality. Sexual mating/filamentation is a critical step of S. scitamineum pathogenesis, yet the regulatory mechanisms are not fully understood. In this study, we identified the SsAGA, SsODC, and SsSAMDC genes, which are involved in polyamine biosynthesis in S. scitamineum. Deletion of SsODC led to complete loss of filamentous growth after sexual mating, and deletion of SsAGA or SsSAMDC caused reduced filamentation. Double deletion of SsODC and SsSAMDC resulted in auxotrophy for putrescine (PUT) and spermidine (SPD) when grown on minimal medium (MM), indicating that these two genes encode enzymes that are critical for PUT and SPD biosynthesis. We further showed that low PUT concentrations promoted S. scitamineum filamentation, while high PUT concentrations suppressed filamentation. Disrupted fungal polyamine biosynthesis also resulted in a loss of pathogenicity and reduced fungal biomass within infected plants at the early infection stage. SPD formed a gradient from the diseased part to nonsymptom parts of the cane stem, suggesting that SPD is probably favourable for fungal virulence. Mutants of the cAMP-PKA (SsGPA3-SsUAC1-SsADR1) signalling pathway displayed up-regulation of the SsODC gene and elevated intracellular levels of PUT. SsODC directly interacted with SsGPA3, and sporidia of the ss1uac1ΔodcΔ mutant displayed abundant pseudohyphae. Furthermore, we found that elevated PUT levels caused accumulation of intracellular reactive oxygen species (ROS), probably by suppressing transcription of ROS-scavenging enzymes, while SPD played the opposite role. Overall, our work proves that polyamines play important roles in the pathogenic development of sugarcane smut fungus, probably by collaboratively regulating intracellular redox homeostasis with the cAMP-PKA signalling pathway.
Collapse
Affiliation(s)
- Kai Yin
- Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, College of Plant ProtectionSouth China Agricultural UniversityGuangzhouChina
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhouChina
| | - Guobing Cui
- Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, College of Plant ProtectionSouth China Agricultural UniversityGuangzhouChina
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhouChina
| | - Xinping Bi
- Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, College of Plant ProtectionSouth China Agricultural UniversityGuangzhouChina
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhouChina
| | - Meiling Liang
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Plant ProtectionResearch Institute of Guangdong Academy of Agricultural SciencesGuangzhouChina
| | - Zhijian Hu
- Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, College of Plant ProtectionSouth China Agricultural UniversityGuangzhouChina
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhouChina
| | - Yi Zhen Deng
- Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, College of Plant ProtectionSouth China Agricultural UniversityGuangzhouChina
- Integrative Microbiology Research Centre, Guangdong Province Key Laboratory of Microbial Signals and Disease ControlSouth China Agricultural UniversityGuangzhouChina
| |
Collapse
|
3
|
Liang P, Zhang J, Wu Y, Zheng S, Xu Z, Yang S, Wang J, Ma S, Xiao L, Hu T, Jiang W, Huang C, Xing Q, Kundu M, Wang B. An ULK1/2-PXN mechanotransduction pathway suppresses breast cancer cell migration. EMBO Rep 2023; 24:e56850. [PMID: 37846507 PMCID: PMC10626438 DOI: 10.15252/embr.202356850] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 09/09/2023] [Accepted: 09/27/2023] [Indexed: 10/18/2023] Open
Abstract
The remodeling and stiffening of the extracellular matrix (ECM) is a well-recognized modulator of breast cancer progression. How changes in the mechanical properties of the ECM are converted into biochemical signals that direct tumor cell migration and metastasis remain poorly characterized. Here, we describe a new role for the autophagy-inducing serine/threonine kinases ULK1 and ULK2 in mechanotransduction. We show that ULK1/2 activity inhibits the assembly of actin stress fibers and focal adhesions (FAs) and as a consequence impedes cell contraction and migration, independent of its role in autophagy. Mechanistically, we identify PXN/paxillin, a key component of the mechanotransducing machinery, as a direct binding partner and substrate of ULK1/2. ULK-mediated phosphorylation of PXN at S32 and S119 weakens homotypic interactions and liquid-liquid phase separation of PXN, impairing FA assembly, which in turn alters the mechanical properties of breast cancer cells and their response to mechanical stimuli. ULK1/2 and the well-characterized PXN regulator, FAK/Src, have opposing functions on mechanotransduction and compete for phosphorylation of adjacent serine and tyrosine residues. Taken together, our study reveals ULK1/2 as important regulator of PXN-dependent mechanotransduction.
Collapse
Affiliation(s)
- Peigang Liang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Jiaqi Zhang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Yuchen Wu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Shanyuan Zheng
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Zhaopeng Xu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Shuo Yang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Jinfang Wang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Suibin Ma
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
| | - Li Xiao
- Department of OncologyZhongshan Hospital of Xiamen UniversityXiamenChina
| | - Tianhui Hu
- Cancer Research Center, School of MedicineXiamen UniversityXiamenChina
| | - Wenxue Jiang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio‐Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life SciencesHubei UniversityWuhanChina
| | - Chaoqun Huang
- Central LaboratoryThe Fifth Hospital of XiamenXiamenChina
| | - Qiong Xing
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio‐Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life SciencesHubei UniversityWuhanChina
| | - Mondira Kundu
- Department of Cell and Molecular BiologySt. Jude Children's Research HospitalMemphisTNUSA
| | - Bo Wang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life SciencesXiamen UniversityXiamenChina
- Shenzhen Research Institute of Xiamen UniversityShenzhenChina
| |
Collapse
|
4
|
Wang Z, Kim W, Wang YW, Yakubovich E, Dong C, Trail F, Townsend JP, Yarden O. The Sordariomycetes: an expanding resource with Big Data for mining in evolutionary genomics and transcriptomics. FRONTIERS IN FUNGAL BIOLOGY 2023; 4:1214537. [PMID: 37746130 PMCID: PMC10512317 DOI: 10.3389/ffunb.2023.1214537] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 06/06/2023] [Indexed: 09/26/2023]
Abstract
Advances in genomics and transcriptomics accompanying the rapid accumulation of omics data have provided new tools that have transformed and expanded the traditional concepts of model fungi. Evolutionary genomics and transcriptomics have flourished with the use of classical and newer fungal models that facilitate the study of diverse topics encompassing fungal biology and development. Technological advances have also created the opportunity to obtain and mine large datasets. One such continuously growing dataset is that of the Sordariomycetes, which exhibit a richness of species, ecological diversity, economic importance, and a profound research history on amenable models. Currently, 3,574 species of this class have been sequenced, comprising nearly one-third of the available ascomycete genomes. Among these genomes, multiple representatives of the model genera Fusarium, Neurospora, and Trichoderma are present. In this review, we examine recently published studies and data on the Sordariomycetes that have contributed novel insights to the field of fungal evolution via integrative analyses of the genetic, pathogenic, and other biological characteristics of the fungi. Some of these studies applied ancestral state analysis of gene expression among divergent lineages to infer regulatory network models, identify key genetic elements in fungal sexual development, and investigate the regulation of conidial germination and secondary metabolism. Such multispecies investigations address challenges in the study of fungal evolutionary genomics derived from studies that are often based on limited model genomes and that primarily focus on the aspects of biology driven by knowledge drawn from a few model species. Rapidly accumulating information and expanding capabilities for systems biological analysis of Big Data are setting the stage for the expansion of the concept of model systems from unitary taxonomic species/genera to inclusive clusters of well-studied models that can facilitate both the in-depth study of specific lineages and also investigation of trait diversity across lineages. The Sordariomycetes class, in particular, offers abundant omics data and a large and active global research community. As such, the Sordariomycetes can form a core omics clade, providing a blueprint for the expansion of our knowledge of evolution at the genomic scale in the exciting era of Big Data and artificial intelligence, and serving as a reference for the future analysis of different taxonomic levels within the fungal kingdom.
Collapse
Affiliation(s)
- Zheng Wang
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, United States
| | - Wonyong Kim
- Korean Lichen Research Institute, Sunchon National University, Suncheon, Republic of Korea
| | - Yen-Wen Wang
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, United States
| | - Elizabeta Yakubovich
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Caihong Dong
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Frances Trail
- Department of Plant Biology, Michigan State University, East Lansing, MI, United States
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI, United States
| | - Jeffrey P. Townsend
- Department of Biostatistics, Yale School of Public Health, New Haven, CT, United States
- Department of Ecology and Evolutionary Biology, Program in Microbiology, and Program in Computational Biology and Bioinformatics, Yale University, New Haven, CT, United States
| | - Oded Yarden
- Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| |
Collapse
|
5
|
Pectate Lyase Genes Abundantly Expressed During the Infection Regulate Morphological Development of Colletotrichum camelliae and CcPEL16 Is Required for Full Virulence to Tea Plants. mSphere 2023; 8:e0067722. [PMID: 36692304 PMCID: PMC9942558 DOI: 10.1128/msphere.00677-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Colletotrichum camelliae is the dominant species causing foliar diseases of tea plants (Camellia sinensis) in China. Transcriptome data and reverse transcription-quantitative PCR (qRT-PCR) analysis have demonstrated that the pectate lyase genes in C. camelliae (CcPELs) were significantly upregulated during infectious development on tea plants (cv. Longjing43). To further evaluate the biological functions of CcPELs, we established a polyethylene glycol (PEG)-mediated protoplast transformation system of C. camelliae and generated targeted deletion mutants of seven CcPELs. Phenotypic assays showed that the genes contribute to mycelial growth, conidiation, and appressorium development. The polypeptides encoded by each CcPEL gene contained a predicted N-terminal signal peptide, and a yeast invertase secretion assay suggested that each CcPEL protein could be secreted. Cell death-suppressive activity assays confirmed that all seven CcPELs did not suppress Bax-induced cell death in tobacco leaf cells. However, deletion of CcPEL16 significantly reduced necrotic lesions on tea leaves. Taken together, these results indicated that CcPELs play essential roles in regulating morphological development, and CcPEL16 is required for full virulence in C. camelliae. IMPORTANCE In this study, we first established a PEG-mediated protoplast transformation system of C. camelliae and used it to investigate the biological functions of seven pectate lyase genes (CcPELs) which were abundantly expressed during infection. The results provided insights into the contributions of pectate lyase to mycelial growth, conidial production, appressorium formation, and the pathogenicity of C. camelliae. We also confirmed the secretory function of CcPEL proteins and their role in suppressing Bax-induced cell death. Overall, this study provides an effective method for generating gene-deletion transformants in C. camelliae and broadens our understanding of pectate lyase in regulating morphological development and pathogenicity.
Collapse
|
6
|
Appressoria-Small but Incredibly Powerful Structures in Plant-Pathogen Interactions. Int J Mol Sci 2023; 24:ijms24032141. [PMID: 36768468 PMCID: PMC9917257 DOI: 10.3390/ijms24032141] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 01/25/2023] Open
Abstract
Plant-pathogenic fungi are responsible for many of the most severe crop diseases in the world and remain very challenging to control. Improving current protection strategies or designating new measures based on an overall understanding of molecular host-pathogen interaction mechanisms could be helpful for disease management. The attachment and penetration of the plant surface are the most important events among diverse plant-fungi interactions. Fungi evolved as small but incredibly powerful infection structure appressoria to facilitate attachment and penetration. Appressoria are indispensable for many diseases, such as rusts, powdery mildews, and blast diseases, as well as devastating oomycete diseases. Investigation into the formation of plant-pathogen appressoria contributes to improving the understanding of the molecular mechanisms of plant-pathogen interactions. Fungal host attachment is a vital step of fungal pathogenesis. Here, we review recent advances in the molecular mechanisms regulating the formation of appressoria. Additionally, some biocontrol agents were revealed to act on appressorium. The regulation of fungal adhesion during the infective process by acting on appressoria formation is expected to prevent the occurrence of crop disease caused by some pathogenic fungi.
Collapse
|