Sporangium - an overview | ScienceDirect Topics
网页A sporangium is a small, stipitate (stalked) or nonstipitate (sessile) structure of restricted size (generally 1 mm in diameter) and definite shape, often roughly spherical, formed by the clumping of the plasmodium.
Sporangium - Definition and Quiz - Biology Dictionary
网页2017年5月18日 · A sporangium (plural: sporangia) is the capsule structure belonging to many plants and fungi, in which the reproductive spores are produced and stored.
The evolution and development of sporangia—The ... - ScienceDirect
网页A key innovation of land plants is the origin and evolution of the sporangium, the fundamental reproductive structure of the diploid sporophyte. In vascular plants, whether the structure is a cone, fertile leaf, or flower—all are clusters of sporangia.
Sporangium | biology | Britannica
网页The sporangium generally terminates an elongate stalk, or seta, when the sporangium is ready to shed its spores. The sporangium rupture usually involves specialized structures that enhance expulsion of the spores away from the parent gametophyte.
Sporangium – Definition, Characteristics, Structure, Importance
网页2024年3月29日 · A sporangium is a specialized cellular structure in plants and fungi responsible for the formation, encapsulation, and dissemination of spores.
Regulation of Sporangium Formation, Spore Dormancy, and Sporangium …
网页2020年10月8日 · Among them, two paralogous FliA family sigma factors, FliA1 and FliA2, form an important hub in the regulatory network for sporangium formation, spore dormancy, and sporangium dehiscence, while FliA3 does not have an apparent impact on morphological differentiation.
The Fern Sporangium: A Unique Catapult | Science - AAAS
网页2012年3月16日 · Various plants and fungi have evolved ingenious devices to disperse their spores. One such mechanism is the cavitation-triggered catapult of fern sporangia. The spherical sporangia enclosing the sp...
25.1D: Sporophytes and Gametophytes in Seedless Plants
网页2023年10月31日 · The diploid stage of a plant (2n), the sporophyte, bears a sporangium, an organ that produces spores during meiosis. Homosporous plants produce one type of spore which develops into a gametophyte (1n) with both male and female organs.
Documenting the Sporangium Development of the Polypodiales …
网页2022年4月29日 · Sporangium is the reproductive organ to produce spores. Fern plant shows great differences in sporangium morphology. Sporangium development in leptosporangiate had been carried out since Sheffield and Bell, 1979 ; the later decades of the 19th century ( Bower, 1891 ; Wilson, 1958b , 1999 ;
The fern cavitation catapult: mechanism and design principles
网页The function of the sporangium as a catapult requires that the reduction in cell volume owing to evaporation imparts a bending deformation to the annulus. In other words, the annulus can ‘throw’ the spores only to the extent that it is bent backwards rather than collapsed onto itself.
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