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In an artificial condition (e.g., carrot agar medium), the F. graminearum Z3643 strain was capable of producing perithecia predominantly in the central region of the fungal culture where aerial hyphae naturally collapsed. To unravel the intricate relationship between natural aerial hyphae collapse and sexual development in this fungus, we focused on 699 genes differentially expressed during aerial hyphae collapse, with 26 selected for further analysis. Targeted gene deletion and quantitative real-time PCR analyses elucidated the functions of specific genes during natural aerial hyphae collapse and perithecium formation. Furthermore, comparative gene expression analyses between natural collapse and artificial removal conditions reveal distinct temporal profiles, with the latter inducing a more rapid and pronounced response, particularly in MAT gene expression. Notably, FGSG_09210 and FGSG_09896 play crucial roles in sexual development and aerial hyphae growth, respectively. Taken together, it is plausible that if aerial hyphae collapse occurs on plant debris, it may serve as a physical cue for inducing perithecium formation in crop fields, representing a survival strategy for F. graminearum during winter. Insights into the molecular mechanisms underlying aerial hyphae collapse provides offer potential strategies for disease control against FHB caused by F. graminearum.<\/jats:p>","DOI":"10.5423\/ppj.ft.01.2024.0007","type":"journal-article","created":{"date-parts":[[2024,2,1]],"date-time":"2024-02-01T01:45:33Z","timestamp":1706751933000},"page":"83-97","update-policy":"https:\/\/doi.org\/10.5423\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Functional Analysis of Genes Specifically Expressed during Aerial Hyphae Collapse as a Potential Signal for Perithecium Formation Induction in Fusarium 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the economic impact of a crop disease: the case of Fusarium head blight in U.S. wheat and barley","author":"Nganje","year":"2002"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1016\/j.fgb.2022.103683"},{"key":"ref24","doi-asserted-by":"publisher","DOI":"10.1021\/np500436r"},{"key":"ref25","doi-asserted-by":"publisher","DOI":"10.2307\/3761794"},{"key":"ref26","first-page":"9","volume-title":"","author":"Turkington","year":"2016"}],"container-title":["The Plant Pathology 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