Results 231 to 240 of about 17,918 (286)
Source analysis and ecological risk assessment of potentially toxic elements in farmland soil around a mining area. [PDF]
PLoS OneHu Y +7 more
europepmc +1 more source
On the number of uncancelled elements in the sieve of Eratosthenes
Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen: Series A: Mathematical Sciences, 1950 openaire +2 more sources
Stationary sieve element proteins
Journal of Plant Physiology, 2021 Vascular plants use the phloem to move sugars and other molecules from source leaves to sink organs such as roots and fruits. Within the phloem, enucleate sieve elements provide the low-resistance pipe system that enable bulk flow of sap. In this review,
Niels Christian Holm Sanden +1 more
exaly +5 more sources
OHMS**: Phytoplasmas dictate changes in sieve-element ultrastructure to accommodate their requirements for nutrition, multiplication and translocation [PDF]
Plant Signaling and Behavior, 2016 Phytoplasmas are among the most recently discovered plant pathogenic microorganisms so, many traits of the interactions with host plants and insect vectors are still unclear and need to be investigated.
Rita Musetti +2 more
exaly +4 more sources
SEORious business: structural proteins in sieve tubes and their involvement in sieve element occlusion [PDF]
Journal of Experimental Botany, 2014 The phloem provides a network of sieve tubes for long-distance translocation of photosynthates. For over a century, structural proteins in sieve tubes have presented a conundrum since they presumably increase the hydraulic resistance of the tubes while ...
Michael Knoblauch +2 more
exaly +5 more sources
Sieve element biology provides leads for research on phytoplasma lifestyle in plant hosts
Journal of Experimental Botany, 2019 Phytoplasmas reside exclusively in sieve tubes, tubular arrays of sieve element-companion cell complexes. Hence, the cell biology of sieve elements may reveal (ultra)structural and functional conditions that may be of significance for survival ...
Aart J E Van Bel +2 more
exaly +2 more sources
Arabidopsis NAC45/86 direct sieve element morphogenesis culminating in enucleation
Science, 2014 Photoassimilates such as sugars are transported through phloem sieve element cells in plants. Adapted for effective transport, sieve elements develop as enucleated living cells.
Shri Ram Yadav +2 more
exaly +2 more sources
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Foliar sieve elements: Nexus of the leaf
Journal of Plant Physiology, 2022In this review, a central position of foliar sieve elements in linking leaf structure and function is explored. Results from studies involving plants grown under, and acclimated to, different growth regimes are used to identify significant, linear relationships between features of minor vein sieve elements and those of 1) leaf photosynthetic capacity ...
William W. Adams III +3 more
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Sieve elements caught in the act
Trends in Plant Science, 2002Phloem is a puzzling plant tissue owing to the unique natural defence responses of the sieve elements to any kind of mechanical manipulation. Recent non-invasive studies have enabled real-time observation of events in intact sieve tubes, including mass transport, sieve-pore sealing and conformational changes of structural proteins.
Aart J E, van Bel +2 more
openaire +2 more sources