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Mostrando ítems 911-920 de 1097
Bryophyte and lichen biomass and nitrogen fixation in a high elevation cloud forest in Cerro de La Muerte, Costa Rica
(2021-01)
Cloud forests have been found to lose more nitrogen in stream discharge than they gain from atmospheric deposition. They also support a large diversity and biomass of tree epiphytes, predominately composed of cryptogams. ...
Florae costaricensis subtribui pleurothallidinis prodromus—Systematics of Echinosepala (Orchidaceae)
(2020-12)
We provide a general introduction to the prodromi to Flora Costaricensis, and an introduction to the precursors of subtribe Pleurothallidinae. We present a systematic revision of the genus Echinosepala for the flora of ...
Borrelidin Induces the Unfolded Protein Response in Oral Cancer Cells and Chop-Dependent Apoptosis
(2015)
Oral squamous cell carcinoma (OSCC) is the most common cancer affecting the oral cavity, and US clinics will register about 30,000 new patients in 2015. Current treatment modalities include chemotherapy, surgery, and ...
Taxonomy in watercolor: the Specklinia endotrachys group, part 2
Taxonomie in Aquarell: die Specklinia-endotrachys-Gruppe, Teil 2
(2013)
in the last decade orchid systematics has focused especially on assessing evolutionary relationships among species and species groups, in an attempt to produce a solid phylogenetic framework for the family. While in general ...
The New Refugium Botanicum. Stanhopea ecornuta
(2021)
Stanhopea ecornuta Lemaire, Flore des
Serres 2: 181, t. 9. 1846. Stanhopeastrum
ecornutum (Lemaire) Rchb.f., Bot. Zeit.
(Hamburg) 10:927. 1852. TYPE: Guatemala.
Ex hort. van Houtte, J. Warszewicz s.n.
(holotype probably ...
Comparación de dos métódos de preparación de tejido para estudiar la anatomía interna del delfácido Tagosodes orizicolus con microscopia de luz y electrónica
(Universidad de Costa Rica, 1997)
Two methods of embedding, sectioning and staining were developed to study the intemal anatomy of the delphacid planthopper Tagosodes orizicolus, one of the most important plagues of rice in Latín America and the only vector ...
Selvamicin, an atypical antifungal polyene from two alternative genomic contexts
(2016-11-15)
The bacteria harbored by fungus-growing ants produce a variety of small molecules that help maintain a complex multilateral symbiosis. In a survey of antifungal compounds from these bacteria, we discovered selvamicin, an ...