Results 81 to 90 of about 229,059 (307)

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Anatomia foliar e caulinar de Chamaecrista trichopoda (Caesalpinioideae) e histoquímica do nectário extrafloral Foliar and stem anatomy of Chamaecrista trichopoda (Caesalpinioideae) and extrafloral nectary histochemistry

Planta Daninha, 2006
Nectários são comuns dentre as Leguminosae, estando freqüentemente localizados nas folhas. Objetivou-se caracterizar anatomicamente o caule, a folha e o nectário extrafloral de Chamaecrista trichopoda, bem como investigar a natureza química do secretado ...
D.M.T. Francino, B.F. Sant'Anna-Santos, K.L.F. Silva, M. Thadeo, R.M.S.A. Meira, A.A. Azevedo   +5 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Estrutura foliar de curauá em diferentes intensidades de radiação fotossinteticamente ativa Leaf structure of curaua in different intensities of photosynthetically active radiation

Pesquisa Agropecuária Brasileira, 2008
O objetivo deste trabalho foi caracterizar a anatomia foliar de Ananas comosus var. erectifolius e comparar as características anatômicas de suas fibras foliares, quando submetidas a dois índices de radiação fotossinteticamente ativa (54 e 100%).
Elaine Cristina Pacheco de Oliveira, Osmar Alves Lameira, Fernanda Ilkiu Borges de Sousa, Rolf Junior Ferreira Silva   +3 more
doaj   +1 more source

Leaf Optical Responses to Light and Soil Nutrient Availability in Temperature Deciduous Trees [PDF]

, 2005
Leaf optical parameters influence light availability at the cellular, leaf, and canopy scale of integration. While recent studies have focused on leaf optical responses to acute plant stress, the effects of changes in plant resources on leaf optics ...
Baltzer, Jennifer L., Thomas, Sean C.
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

THE ABILITY OF QUANTITATIVE LITERACY OF PRE-SERVICE BIOLOGY STUDENTS

JPBI (Jurnal Pendidikan Biologi Indonesia), 2017
This research have purpose to know and describe quantitative literacy of pre-service biology students based on six indicators of quantitative literacy. Methods used is descriptive with study survey.
Ryan Ardiansyah, Dea Diella
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Secretory Tissues and Volatile Components of Disc Florets in Several Wild Helianthus L. Species

Plants
Although flower pollinator interactions are known to be mediated by floral traits, not enough attention has been paid to the research of secretory tissues and volatile components of sunflower disc florets as potentially important parameters in breeding ...
Jelena Jocković, Nemanja Rajčević, Lana Zorić, Milan Jocković, Aleksandra Radanović, Sandra Cvejić, Siniša Jocić, Ljubodrag Vujisić, Dragana Miladinović, Vladimir Miklič, Jadranka Luković   +10 more
doaj   +1 more source

Processus de croissance et d'organogenese chez le pommier cv Golden Delicious [PDF]

Biotechnologie, Agronomie, Société et Environnement, 2002
Growth and organogenesis processes in apple tree cv Golden Delicious. This work aims to focus on the organogenetic activity, growth and histological processes in the shoot apical meristem of apple cv Golden Delicious.
Mehri H., Crabbe J.
doaj