The production of d-lactic acid, a major fermentation product of Scenedesmus obliquus strain D(3), is inhibited by light. This inhibition has been observed in the wild type as well as in Bishop's mutant 11. However, in mutant 8, which lacks photophosphorylation, light stimulated the formation of d-lactic acid.

Ginkgo Zamia Cycas Podocarpus Sequoia Sciadopitys Pinus Welwitschia Gnetum Vitis Ricinus Nuphar Amborella Ceratopteris Pteridium Adiantum Huperzia Ceratodon Physcomitrella Marchantia Penium Closterium Spirogyra Coleochaete Chaetosphaeridium Nitella Chara Klebsormidium Chlorokybus Mesostigma Volvox Chlamydomonas Scenedesmus Prototheca Chlorella Coccomyxa Botryococcus Ostreococcus Micromonas Pyra...

Polyamines, Photosynthetic Apparatus, Photoinhibition, Photoadaptation, Scenedesmus obliquus In the unicellular green alga Scenedesmus obliquus the level of photoinhibition and the recovery of the cells after reversal to the initial light conditions in relation to the pre-photoadaptation of the culture to low, medium and high light intensity was determined. The changes in the photosynthetic pig...

The work treats 52 species-group names related to genus Agrilus incorrectly cited in the world catalogue of Bellamy (2008). The name dimorphus Théry, 1941 from the genus Aphanisticus and mulleri Théry, 1925 from the genus Australodraco are also treated. Four primary or secondary homonyms are replaced by substitute names. Most of the proposed changes refer to the availability, validity, spelling...

Magellanic tanaidacean faunas have been mainly studied in the Magellan Strait and Beagle Channel, the latter restricted to bottoms deeper than 40m. As a result, the shallow rocky bottoms of the Magellanic fjords remain largely under-studied, and their tanaidacean diversity is poorly known. In this study, tanaidacean species sampled from shallow rocky bottoms of Chilean fjords are investigated, ...

It is generally assumed in plant nutrition that an essential element is essential for all plants, though the amounts required may be appreciably different. Thus, the need for boron is shown within 3 to 4 days by the necrosis of sunflower, tomato, or tobacco tissue, but requires at least 3 weeks in soybeans. The suggestion (3) that boron was required for differentiation rather than cell division...