Results 61 to 70 of about 3,048,042 (302)

Insight into the early steps of root hair formation revealed by the procuste1 cellulose synthase mutant of Arabidopsis thaliana [PDF]

open access: yes, 2008
Background: formation of plant root hairs originating from epidermal cells involves selection of a polar initiation site and production of an initial hair bulge which requires local cell wall loosening. In Arabidopsis the polar initiation site is located
Singh, Sunil K.   +12 more
core   +1 more source

Soil C/N ratio governs bacterial community assembly along an arid mountain elevational gradient

open access: yesFrontiers in Microbiology
The mechanisms governing soil bacterial community assembly along elevational gradients in cold-arid mountains remain poorly understood, despite their critical role in these fragile ecosystems.
Yongguang Zhang   +7 more
doaj   +1 more source

Multielectrode Geoelectrical Tomography for the Quantification of Plant Roots

open access: yesItalian Journal of Agronomy, 2010
The amount and spatial distribution of plant roots are crucial ecological features, and methods based on soil electrical resistivity (r) tomography (ERT) have been proposed for their non-destructive measurement.
Mariana Amato   +3 more
doaj   +1 more source

The exploitative segregation of plant roots

open access: yesScience, 2020
Competitive roots Much of the world's plant biomass exists out of sight underground in the form of roots. Cabal et al. developed a theoretical model and tested it empirically to explain the rules that govern root growth (see the Perspective by Semchenko).
Ciro Cabal   +4 more
openaire   +4 more sources

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Carboxylates and the uptake of ammonium by excised maize roots [PDF]

open access: yes, 1975
The effect of carboxylates (organic acid anions) on NH 4 uptake was studied by changing the carboxylate level of roots prior to uptake experi ments. Succinate was the most effective stimulator of ammonium uptake.
Breteler, H.
core  

The promoter from SlREO, a highly-expressed, root-specific Solanum lycopersicum gene, directs expression to cortex of mature roots [PDF]

open access: yes, 2008
Root-specific promoters are valuable tools for targeting transgene expression, but many of those already described have limitations to their general applicability.
Wright, Carole   +5 more
core   +1 more source

MicroRNAs: At the Root of Plant Development? [PDF]

open access: yesPlant Physiology, 2003
Although most genes use RNA in the form of mRNA as a coding intermediate for protein production, there are many genes whose final products are RNA. These noncoding RNAs range from the familiar transfer and ribosomal RNAs to the more recently discovered regulatory RNAs.
Bonnie, Bartel, David P, Bartel
openaire   +2 more sources

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Mechanical properties of tree roots for soil reinforcement models [PDF]

open access: yes, 2001
Evidence from forestry has shown that part of the forest floor bearing capacity is delivered by tree roots. The beneficial effect however varies and diminishes with increasing number of vehicle passes. Roots potential for reinforcing the soil is known to
Cofie, P.
core  

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