Results 21 to 30 of about 161,093 (254)

In honor of Hartmut Karl Lichtenthaler

open access: yesPhotosynthetica, 2021
We honor here Hartmut Karl Lichtenthaler, a pioneer of plant physiology, plant biochemistry, plant biophysics, plant molecular biology, and stress physiology.
G. GOVINDJEE
doaj   +1 more source

Salicylic acid metabolism and signalling coordinate senescence initiation in aspen in nature

open access: yesNature Communications, 2023
Deciduous trees exhibit a spectacular phenomenon of autumn senescence driven by the seasonality of their growth environment, yet there is no consensus which external or internal cues trigger it.
Jenna Lihavainen   +8 more
doaj   +1 more source

Imaging long distance propagating calcium signals in intact plant leaves with the BRET-based GFP-Aequorin reporter

open access: yesFrontiers in Plant Science, 2014
Calcium (Ca2+) is a second messenger involved in many plant signalling processes. Biotic and abiotic stimuli induce Ca2+ signals within plant cells, which, when decoded, enable these cells to adapt in response to environmental stresses. Multiple examples
Tou Cheu eXiong   +5 more
doaj   +1 more source

Two dominant boreal conifers use contrasting mechanisms to reactivate photosynthesis in the spring

open access: yesNature Communications, 2020
Boreal conifers regulate photosynthesis to maximize seasonal growth while limiting damage due to light and cold stress. Here Yang et al. show that two major conifer species achieve this via different means as Scots pine, but not Norway spruce, activates ...
Qi Yang   +5 more
doaj   +1 more source

Imaging of High‐Risk Neuroblastoma: Recommendations From SIOPEN Radiology and Nuclear Medicine Specialty Committees

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Neuroblastoma is the most common extracranial solid tumor in early childhood. Its clinical behavior is highly variable, ranging from spontaneous regression to fatal outcome despite intensive treatment. The International Society of Pediatric Oncology Europe Neuroblastoma Group (SIOPEN) Radiology and Nuclear Medicine Specialty Committees ...
Annemieke Littooij   +11 more
wiley   +1 more source

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

open access: yesFEBS 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

Strigolactones initiate the formation of haustorium-like structures in Castilleja

open access: yesiScience
Summary: Strigolactones serve as germination signals for several root-parasitic plant species within the Orobanchaceae family. Yet, their role in the life cycle of the facultatively parasitic genus Castilleja has remained elusive.
Marco Bürger   +2 more
doaj   +1 more source

Redox regulation of PEP activity during seedling establishment in Arabidopsis thaliana

open access: yesNature Communications, 2018
The plastid-encoded RNA polymerase PEP is regulated according to plastid redox state. Here, the authors show that the redox-regulated PRIN2 protein is reduced to monomeric form in a thiol-dependent manner in response to light and that PRIN2 monomers are ...
Manuel Guinea Díaz   +5 more
doaj   +1 more source

Ultra performance liquid chromatography and high resolution mass spectrometry for the analysis of plant lipids

open access: yesFrontiers in Plant Science, 2011
Holistic analysis of lipids is becoming increasingly popular in the life sciences. Recently, several interesting, mass spectrometry-based studies have been conducted, especially in plant biology.
Jan eHummel   +5 more
doaj   +1 more source

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

open access: yesFEBS 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   +5 more
wiley   +1 more source

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