Bulgarian Academy of Sciences

About: Bulgarian Academy of Sciences is a government organization based out in Sofia, Bulgaria. It is known for research contribution in the topics: Catalysis & Coupling constant. The organization has 17989 authors who have published 36276 publications receiving 642820 citations. The organization is also known as: Bulgarian Academy of Sciences，簡稱：BAS & Balgarska Akademiya na Naukite.

Red List of Bulgarian vascular plants

Abstract: The national threat status of 898 species of vascular plants from the Bulgarian flora has been evaluated using Version 3.1 of the IUCN Red List Categories and Criteria. The resulting Red List of the Bulgarian vascular plants (threat categories) comprises 801 species (20.5 % of the total flora), of which one Extinct (EX), 12 Regionally Extinct (RE), 208 Critically Endangered (CR), 297 Endangered (EN), 204 Vulnerable (VU), and 79 Near Threatened (NT). The list of other evaluated species comprises 96 taxa, of which, 53 Data Deficient (DD) and 43 Least Concern (LC).

Salicylic acid and photosynthesis: signalling and effects

Abstract: Salicylic acid (SA) is a well-known signalling molecule playing a role in local and systemic acquired resistance against pathogens as well as in acclimation to certain abiotic stressors. As a stress-related signalling compound, it may directly or indirectly affect various physiological processes, including photosynthesis. The effects of exogenously applied SA on plant physiological processes under optimal environmental conditions are controversial. Several studies suggest that SA may have a positive effect on germination or plant growth in various plant species. However, SA may also act as a stress factor, having a negative influence on various physiological processes. Its mode of action depends greatly on several factors, such as the plant species, the environmental conditions (light, temperature, etc.) and the concentration. Exogenous SA may also alleviate the damaging effects of various stress factors, and this protection may also be manifested as higher photosynthetic capacity. Unfavourable environmental conditions have also been shown to increase the endogenous SA level in plants. Recent results strongly suggest that controlled SA levels are important in plants for optimal photosynthetic performance and for acclimation to changing environmental stimuli. The present review discusses the effects of exogenous and endogenous SA on the photosynthetic processes under optimal and stress conditions.