Temperature, water activity and pH during conidia production affect the physiological state and germination time of Penicillium species

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• 作者：Nicolas Nguyen Van Long^a ; Valé ; rie Vasseur^a ; Louis Coroller^b ; Philippe Dantigny^a ; Sophie Le Panse^c ; Amé ; lie Weill^a ; Jé ; rô ; me Mounier^a ; Karim Rigalma^a ; ^{karim.rigalma@univ-brest.fr}
• 关键词：Conidial germination ; Predictive mycology ; Sporulation ; Penicillium roqueforti ; Penicillium expansum ; Compatible solutes
• 刊名：International Journal of Food Microbiology
• 出版年：2017
• 出版时间：16 January 2017
• 年：2017
• 卷：241
• 期：Complete
• 页码：151-160
• 全文大小：1137 K
• 卷排序：241

文摘

A simple method to study fungal spore germination on solid medium is proposed. Penicillium roqueforti conidia produced at 5 °C germinate up to 45h earlier than conidia produced at 20 °C. P. roqueforti and P. expansum conidia produced at 0.900 aw germinate up to 8h earlier than conidia produced at 0.980 aw. Delayed maturation is supposed to reduce the germination time as reflected by trehalose and mannitol content of conidia. The physiological state of conidia should be considered to design challenge tests or predictive mycology studies.