NDLI: Microscopic observation of pyrenoids in Order Ulvales (Chlorophyta) collected from Qingdao coast

Content Provider	Springer Nature Link
Author	Teng, Linhong Ding, Lanping Lu, Qinqin
Copyright Year	2011
Abstract	Pyrenoids found in green algae Order Ulvales have taxonomical significance. Their morphology, microstructure, and the location and number in the cells have been widely used as identification criteria. As these traits can be affected by environmental conditions, it is necessary to look for other different characteristics. Here pyrenoids in several algae species collected along the Qingdao coast were studied for such purpose. The morphology and distribution of pyrenoids in the cells, as well as their change in different parts of the frond and at different times were studied with light microscope. The results are as follows. Pyrenoids appeared to be spherical or oval in observed Ulvales’ algae cells. They were embedded in chloroplasts with the number of 1–3 per cell on average. The number of pyrenoids for Ulva pertusa could change drastically with continuing culture and could reach up to 10–20 per cell in late-growth stages. Generally, the pyrenoids in the marginal part were more observable than those in the central part for Ulva pertusa. In addition, the basal part of frond had more distinct pyrenoids with an average diameter of 2.42 μm for Enteromorpha linza. For some species the pyrenoids were difficult to be observed while dark treatment made them more distinguishable. The apoptosis rate of pyrenoids in different species varied under continuing dark treatment, which could be used to identify different species. Pyrenoids disappeared faster in E. linza than those in E. intestinalis.
Starting Page	223
Ending Page	228
Page Count	6
File Format	PDF
ISSN	16725182
Journal	Journal of Ocean University of China
Volume Number	10
Issue Number	3
e-ISSN	19935021
Language	English
Publisher	SP Science Press
Publisher Date	2011-05-14
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ulvales morphological taxonomy pyrenoid apoptosis process Oceanography
Content Type	Text
Resource Type	Article
Subject	Oceanography Ocean Engineering

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