Results 21 to 30 of about 252,499 (262)

In situ measurements and model estimates of NO3 and NH4 uptake by different phytoplankton size fractions in the southern Benguela upwelling system.

Frontiers in Marine Science, 2016
Bulk measurements can be made of phytoplankton standing stocks on a quasi-synoptic scale but it is more difficult to measure rates of production and nutrient uptake. We present a method to estimate nitrogen uptake rates in productive coastal environments.
Josephine Ffion Atkins, Josephine Ffion Atkins, Coleen Moloney, Coleen Moloney, Trevor Probyn, Stewart Bernard   +5 more
doaj   +1 more source

Global terrestrial nitrogen uptake and nitrogen use efficiency

Journal of Ecology, 2022
Abstract Plant biomass production (BP), nitrogen uptake ( N up ) and their ratio, nitrogen use efficiency (NUE), must be quantified to understand how nitrogen (N) cycling constrains terrestrial carbon (C) uptake. But the controls of key plant processes determining
Peng, Yunke, Prentice, Iain Colin, Bloomfield, Keith J., Campioli, Matteo, Guo, Zhiwen, Sun, Yuanfeng, Tian, Di, Wang, Xiangping, Vicca, Sara, Stocker, Benjamin D.   +9 more
openaire   +4 more sources

Soil nitrogen dynamics regulate differential nitrogen uptake between rice and upland crops

Journal of Integrative Agriculture
Nitrogen use efficiency in rice is lower than in upland crops, likely due to differences in soil nitrogen dynamics and crop nitrogen preferences. However, the specific nitrogen dynamics in paddy and upland systems and their impact on crop nitrogen uptake
Shending Chen, Ahmed S. Elrys, Siwen Du, Wenyan Yang, Zucong Cai, Jinbo Zhang, Lei Meng, Christoph Müller   +7 more
doaj   +1 more source

Influence of Age and Number of Seedlings on Yield and Nutrient Uptake by Machine Transplanted Rice (Oryza sativa L.)

International Journal of Bio-Resource and Stress Management, 2023
The field experiments were conducted at Agricultural Research Station, Gangavathi, University of Agricultural Sciences, Raichur, Karnataka during kharif, 2012 and 2013 to study the effect of different age and number of seedlings hill-1 on nutrient ...
R. B. Negalur, A. S. Halepyati, K. Narayana Rao   +2 more
doaj  

Nitrogen Uptake by Citrus Leaves [PDF]

Journal of the American Society for Horticultural Science, 1995
We studied whether foliar-applied N uptake from a single application of low-biuret N-urea or K NO to citrus leaves was affected by N source, leaf age, or whole-shoot N content. In a glasshouse experiment using potted 18-month-old Citrus paradisi (L.) `Redblush' grapefruit trees grown in full ...
John D. Lea-Cox, James P. Syvertsen
openaire   +1 more source

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

FEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +1 more source

The Dynamic of Nitrogen Uptake from Different Sources by Pea (Pisum sativum L.)

Agriculture, 2021
Nitrogen uptake from various sources by plants capable of biological reduction of N2 in symbiotic systems with root nodule bacteria is influenced by many factors.
Andrzej Wysokinski, Izabela Lozak
doaj   +1 more source

Partial depletion of plasminogen activator inhibitor‐1 decreases subcutaneous fat cell hypertrophy and liver cholesterol in high‐fat‐fed female mice

FEBS Letters, EarlyView.
Obesity raises blood levels of PAI‐1, a protein linked to metabolic dysfunction‐associated steatotic liver disease in people with obesity. In female mice fed a high‐fat diet, partially lowering PAI‐1 led to smaller subcutaneous fat cells and lower liver cholesterol, without changing body weight or insulin sensitivity.
Claudia E. Ramirez Bustamante, Robert Sharp, Pradip K. Saha, Elizabeth S. Anaya, Elizabeth L. Lieu, Evelyn L. de Groot, Pooja Patel, Mi Jeong Heo, Aaron R. Cox, Kang Ho Kim, Sean M. Hartig   +10 more
wiley   +1 more source

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

FEBS Open Bio, EarlyView.
Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento, Danniel Pereira‐Figueiredo, Gabriella Grossi de Lima Dias, Gabriel Ferreira dos Santos, Mariana Rodrigues Pereira, Rafael Brito, Karin C Calaza   +6 more
wiley   +1 more source

Effects of nitrogen forms on nitrogen uptake and allocation and andrographolide components accumulation in Andrographis paniculata

Guangxi Zhiwu
Nitrogen(N)is a mineral nutrient with the highest demand for plants, and it is also a vital abiotic factor that limits plant yield and quality. Plants use inorganic and organic N sources from soil, and N form is a key factor affecting the active ...
JIAN Shaofen1,2,3, LIN Yang1,2,3, WAN Si1,2,3, ZHONG Chu1,2,3*, LIU Han1,2,3
doaj   +1 more source