Results 61 to 70 of about 990,484 (298)
Climate Resilience and Sustainability, 2023 A major limiting factor affecting the uptake of conservation agriculture practices in smallholder farming systems in sub‐Saharan Africa is the limited availability of sufficient crop residues for use as surface mulch.
Philip Antwi‐Agyei +3 more
doaj +1 more source
Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry
FEBS Letters, EarlyView.EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri +5 more
wiley +1 more source
Methods for measuring crop residue [PDF]
, 2002 It is a good time to measure crop residue, or the stems and stalks remaining from last year's crop. Crop residue provides a very important cover for the soil during this time of year, shielding soil particles from heavy rainfalls and erosion until crops ...
Tidman, Michael +2 more
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FEBS Letters, EarlyView.Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell +2 more
wiley +1 more source
Take a break and measure crop residue [PDF]
, 2001 As we near the finish of the 2001 planting season, it is time to take a break and measure remaining crop residue--the stems and stalks remaining from last year's crop.
Tidman, Michael +2 more
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Research with nitrogen fertilizer emphasizes fertilize crop—not crop residue
California Agriculture, 1968 1. Results of field experiments indicate that it is more efficient and effective to apply nitrogen to the crop than to previous crop residues months ahead of planting the crop. 2.
B Krantz +5 more
doaj
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Measure your crop residue [PDF]
, 1999 By now, many producers have completed a great deal of this year's planting, and that means it is a good time to measure crop residues--the stems and stalks remaining from last year's crop.
Tidman, Michael, Miller, Gerald
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FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
Cover crop-based ecological weed management: exploration and optimization [PDF]
, 2008 Keywords: organic farming, ecologically-based weed management, cover crops, green manure, allelopathy, Secale cereale, Brassica napus, Medicago sativa Cover crop-based ecological weed management: exploration and optimization. In organic farming systems,
Kruidhof, H.M.
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