Seasonal bulk xylem pressure in temperate broadleaf eudicot trees: a case study for sugar long-distance transport and signaling

2018 ◽  
Vol 14 (4) ◽  
Author(s):  
Ross Young ◽  
Root Gorelick ◽  
Tim Xing
2014 ◽  
Vol 1 ◽  
Author(s):  
Chambel João ◽  
Jacinto Marta ◽  
Albuquerque Rui ◽  
Severiano Vera ◽  
Mendes Susana ◽  
...  

1994 ◽  
Vol 28 (22) ◽  
pp. 3587-3604 ◽  
Author(s):  
Lars G. Franzén ◽  
Mervi Hjelmroos ◽  
Per Kållberg ◽  
Eva Brorström-Lunden ◽  
Sirkka Juntto ◽  
...  

2005 ◽  
pp. 425-435 ◽  
Author(s):  
Stephen D. Davis ◽  
Frank W. Ewers ◽  
R.Brandon Pratt ◽  
Pamela L. Brown ◽  
Timothy J. Bowen

Author(s):  
James Cronshaw

Long distance transport in plants takes place in phloem tissue which has characteristic cells, the sieve elements. At maturity these cells have sieve areas in their end walls with specialized perforations. They are associated with companion cells, parenchyma cells, and in some species, with transfer cells. The protoplast of the functioning sieve element contains a high concentration of sugar, and consequently a high hydrostatic pressure, which makes it extremely difficult to fix mature sieve elements for electron microscopical observation without the formation of surge artifacts. Despite many structural studies which have attempted to prevent surge artifacts, several features of mature sieve elements, such as the distribution of P-protein and the nature of the contents of the sieve area pores, remain controversial.


Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1689
Author(s):  
Tomasz Neumann

The subject of the article is a comparative long-distance transport analysis based on the relationship between central and eastern China and Poland. It provides an overview of issues related to long-haul China–Poland. The technique for order of preference by similarity to ideal solution (TOPSIS) method was proposed in the multi-criteria analysis. This method was briefly discussed, and its choice was justified. Then, the criteria adopted in the analysis were presented, i.e., time, cost, maximum number of containers, and ecology index. Multi-criteria analysis was carried out for three cases: the transport of one loading unit, 82 loading units, and 200 loading units. The geopolitical and operational situation on the transport route for the analyzed modes of transport was discussed.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
T. Morel-Journel ◽  
E. Vergu ◽  
J.-B. Mercier ◽  
N. Bareille ◽  
P. Ezanno

AbstractThe transport of weaned calves from cow–calf producers to fatteners is a general concern for the young bull industry due to its documented negative impact on the welfare, health and performance of the animals. These transfers are often managed by intermediaries who transport weaned calves to sorting centres, where they are grouped into batches before being sent to fattening units. In this study, we present an algorithm to limiting these transfer distances by appropriately selecting the sorting centre through which they must go. We tested the effectiveness of this algorithm on historical data from a French beef producer organization managing 136,892 transfers using 13 sorting centres. The results show a decrease in the transfer distances compared to the historical record, especially for the calves travelling over long distances (− 76 km, i.e. 18% on average for the 33% longest transfers). Moreover, the distribution of calves between the sorting centres proposed by the algorithm reveals differences in their efficiency in minimizing transfer distances. In addition to its usefulness as a management tool for the daily transport of cattle, this algorithm provides prospects for improving the management of the sorting centres themselves.


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