Ultrastructure and Physiological Characterization of Morchella Mitospores and Their Relevance in the Understanding of the Morel Life Cycle

doi:10.3390/microorganisms11020345

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	Ultrastructure and Physiological Characterization of Morchella Mitospores and Their Relevance in the Understanding of the Morel Life Cycle
	Liu,Wei; He,Peixin; Zhang,Jin; Wu,Liyuan; Er,Lingfang; Shi,Xiaofei; Gu,Zhijia; Yu,Fuqiang; Perez-Moreno,Jesus
	2023
发表期刊	MICROORGANISMS
ISSN	2076-2607
卷号	11 期号:2 页码:345
摘要	Morels, which belong to the Ascomycete genus Morchella, are highly valued edible fungi treasured by gourmet chefs worldwide. Some species are saprotrophic and others are able to form facultative mycorrhizal-like associations with plant roots without establishing true ectomycorrhizal symbioses. In general, it is considered that the formation of asexual spores, or mitospores, is an important step in the life cycle of morels. However, ultrastructure characterization and physiological attributes of morel mitospores have received little attention. In this contribution, the mitospores of M. sextelata were successfully induced under laboratory conditions and their ultrastructure, occurrence, germination, physiological characteristics and mating type gene structure were studied. Mitospore production was closely related to aeration, nutrition and humidity conditions. The average germination rate of mitospores on different media and under various induction stimuli was very low, with an average of 1/100,000. Based on the ultrastructure characterization, low germination rate, growth rate decline, rapid aging and mating genotyping, it was concluded that the mitospores of M. sextelata had lost their conventional function as conidia and might act more as mate sperm-like (gamete) structures. Thus, this study contributed to a deeper understanding of the life cycle of the economically and ecologically important morel fungal group.
关键词	morel cultivation edible mushrooms mating types conidia morel life cycle ultrastructure gamete spermatia PURE CULTURE MATING-TYPE CONIDIA GERMINATION IMPORTUNA
学科领域	Microbiology
DOI	10.3390/microorganisms11020345
WOS记录号	WOS:000940573700001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75033
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Liu,Wei,He,Peixin,Zhang,Jin,et al. Ultrastructure and Physiological Characterization of Morchella Mitospores and Their Relevance in the Understanding of the Morel Life Cycle[J]. MICROORGANISMS,2023,11(2):345.
APA	Liu,Wei.,He,Peixin.,Zhang,Jin.,Wu,Liyuan.,Er,Lingfang.,...&Perez-Moreno,Jesus.(2023).Ultrastructure and Physiological Characterization of Morchella Mitospores and Their Relevance in the Understanding of the Morel Life Cycle.MICROORGANISMS,11(2),345.
MLA	Liu,Wei,et al."Ultrastructure and Physiological Characterization of Morchella Mitospores and Their Relevance in the Understanding of the Morel Life Cycle".MICROORGANISMS 11.2(2023):345.

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