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Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte
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| Zeitschriftentitel: | Plant Biology |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Plant Biology, 22, 2020, 1, S. 38-46 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
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| Schlagwörter: |
| author_facet |
Hoppe, J. Zhang, X. Thomas, F. M. Hoppe, J. Zhang, X. Thomas, F. M. |
|---|---|
| author |
Hoppe, J. Zhang, X. Thomas, F. M. |
| spellingShingle |
Hoppe, J. Zhang, X. Thomas, F. M. Plant Biology Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte Plant Science Ecology, Evolution, Behavior and Systematics General Medicine |
| author_sort |
hoppe, j. |
| spelling |
Hoppe, J. Zhang, X. Thomas, F. M. 1435-8603 1438-8677 Wiley Plant Science Ecology, Evolution, Behavior and Systematics General Medicine http://dx.doi.org/10.1111/plb.13042 <jats:title>Abstract</jats:title><jats:p> <jats:list list-type="bullet"> <jats:list-item><jats:p><jats:italic>Populus euphratica</jats:italic> Oliv. is a widespread phreatophytic tree species that forms riparian forests in (hyper‐)arid regions of Central Asia. Its recruitment strongly relies on vegetative propagation from ‘root suckers’ that emerge from underground root spacers. The water transport through the spacers, although decisive for emerging ramets, has only rarely been quantified, but is crucial for the vegetative regeneration of the forests.</jats:p></jats:list-item> <jats:list-item><jats:p>In root spacers with different diameters collected from a mature poplar forest in northwest China, we calculated the hydraulic conductivity (<jats:italic>k</jats:italic><jats:sub>c</jats:sub>) from anatomical investigations on the basis of a modified Hagen‐Poiseuille equation and measured it (<jats:italic>k</jats:italic><jats:sub>m</jats:sub>) with a perfusion solution in the laboratory. The <jats:italic>k</jats:italic><jats:sub>m</jats:sub> values were compared with the water use by young and mature <jats:italic>P. euphratica</jats:italic> trees determined in previous studies.</jats:p></jats:list-item> <jats:list-item><jats:p>We obtained a significant correlation between <jats:italic>k</jats:italic><jats:sub>m</jats:sub> and <jats:italic>k</jats:italic><jats:sub>c</jats:sub> (which, however, was higher by at least one order of magnitude). Due to the extensive occurrence of tyloses, particularly in older conduits and thicker spacers, and because the conduit area did not increase with spacer diameter, neither <jats:italic>k</jats:italic><jats:sub>c</jats:sub> nor <jats:italic>k</jats:italic><jats:sub>m</jats:sub> increased with an increase in spacer diameter. The water supply through the spacers would be sufficient to meet the water demand even of mature trees.</jats:p></jats:list-item> <jats:list-item><jats:p>Our results provide a mechanistic explanation for the observed occurrence of <jats:italic>P. euphratica</jats:italic> clones across large areas and, provided that they are also valid for stands with larger distances to the water table, for the sustained growth and vegetative reproduction of <jats:italic>P. euphratica</jats:italic> stands growing at larger distances from the groundwater.</jats:p></jats:list-item> </jats:list> </jats:p> Belowground inter‐ramet water transport capacity in <i>Populus euphratica</i>, a Central Asian desert phreatophyte Plant Biology |
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Wiley, 2020 |
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Plant Biology |
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| title |
Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_unstemmed |
Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_full |
Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_fullStr |
Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_full_unstemmed |
Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_short |
Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_sort |
belowground inter‐ramet water transport capacity in <i>populus euphratica</i>, a central asian desert phreatophyte |
| topic |
Plant Science Ecology, Evolution, Behavior and Systematics General Medicine |
| url |
http://dx.doi.org/10.1111/plb.13042 |
| publishDate |
2020 |
| physical |
38-46 |
| description |
<jats:title>Abstract</jats:title><jats:p>
<jats:list list-type="bullet">
<jats:list-item><jats:p><jats:italic>Populus euphratica</jats:italic> Oliv. is a widespread phreatophytic tree species that forms riparian forests in (hyper‐)arid regions of Central Asia. Its recruitment strongly relies on vegetative propagation from ‘root suckers’ that emerge from underground root spacers. The water transport through the spacers, although decisive for emerging ramets, has only rarely been quantified, but is crucial for the vegetative regeneration of the forests.</jats:p></jats:list-item>
<jats:list-item><jats:p>In root spacers with different diameters collected from a mature poplar forest in northwest China, we calculated the hydraulic conductivity (<jats:italic>k</jats:italic><jats:sub>c</jats:sub>) from anatomical investigations on the basis of a modified Hagen‐Poiseuille equation and measured it (<jats:italic>k</jats:italic><jats:sub>m</jats:sub>) with a perfusion solution in the laboratory. The <jats:italic>k</jats:italic><jats:sub>m</jats:sub> values were compared with the water use by young and mature <jats:italic>P. euphratica</jats:italic> trees determined in previous studies.</jats:p></jats:list-item>
<jats:list-item><jats:p>We obtained a significant correlation between <jats:italic>k</jats:italic><jats:sub>m</jats:sub> and <jats:italic>k</jats:italic><jats:sub>c</jats:sub> (which, however, was higher by at least one order of magnitude). Due to the extensive occurrence of tyloses, particularly in older conduits and thicker spacers, and because the conduit area did not increase with spacer diameter, neither <jats:italic>k</jats:italic><jats:sub>c</jats:sub> nor <jats:italic>k</jats:italic><jats:sub>m</jats:sub> increased with an increase in spacer diameter. The water supply through the spacers would be sufficient to meet the water demand even of mature trees.</jats:p></jats:list-item>
<jats:list-item><jats:p>Our results provide a mechanistic explanation for the observed occurrence of <jats:italic>P. euphratica</jats:italic> clones across large areas and, provided that they are also valid for stands with larger distances to the water table, for the sustained growth and vegetative reproduction of <jats:italic>P. euphratica</jats:italic> stands growing at larger distances from the groundwater.</jats:p></jats:list-item>
</jats:list>
</jats:p> |
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| description | <jats:title>Abstract</jats:title><jats:p> <jats:list list-type="bullet"> <jats:list-item><jats:p><jats:italic>Populus euphratica</jats:italic> Oliv. is a widespread phreatophytic tree species that forms riparian forests in (hyper‐)arid regions of Central Asia. Its recruitment strongly relies on vegetative propagation from ‘root suckers’ that emerge from underground root spacers. The water transport through the spacers, although decisive for emerging ramets, has only rarely been quantified, but is crucial for the vegetative regeneration of the forests.</jats:p></jats:list-item> <jats:list-item><jats:p>In root spacers with different diameters collected from a mature poplar forest in northwest China, we calculated the hydraulic conductivity (<jats:italic>k</jats:italic><jats:sub>c</jats:sub>) from anatomical investigations on the basis of a modified Hagen‐Poiseuille equation and measured it (<jats:italic>k</jats:italic><jats:sub>m</jats:sub>) with a perfusion solution in the laboratory. The <jats:italic>k</jats:italic><jats:sub>m</jats:sub> values were compared with the water use by young and mature <jats:italic>P. euphratica</jats:italic> trees determined in previous studies.</jats:p></jats:list-item> <jats:list-item><jats:p>We obtained a significant correlation between <jats:italic>k</jats:italic><jats:sub>m</jats:sub> and <jats:italic>k</jats:italic><jats:sub>c</jats:sub> (which, however, was higher by at least one order of magnitude). Due to the extensive occurrence of tyloses, particularly in older conduits and thicker spacers, and because the conduit area did not increase with spacer diameter, neither <jats:italic>k</jats:italic><jats:sub>c</jats:sub> nor <jats:italic>k</jats:italic><jats:sub>m</jats:sub> increased with an increase in spacer diameter. The water supply through the spacers would be sufficient to meet the water demand even of mature trees.</jats:p></jats:list-item> <jats:list-item><jats:p>Our results provide a mechanistic explanation for the observed occurrence of <jats:italic>P. euphratica</jats:italic> clones across large areas and, provided that they are also valid for stands with larger distances to the water table, for the sustained growth and vegetative reproduction of <jats:italic>P. euphratica</jats:italic> stands growing at larger distances from the groundwater.</jats:p></jats:list-item> </jats:list> </jats:p> |
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| spelling | Hoppe, J. Zhang, X. Thomas, F. M. 1435-8603 1438-8677 Wiley Plant Science Ecology, Evolution, Behavior and Systematics General Medicine http://dx.doi.org/10.1111/plb.13042 <jats:title>Abstract</jats:title><jats:p> <jats:list list-type="bullet"> <jats:list-item><jats:p><jats:italic>Populus euphratica</jats:italic> Oliv. is a widespread phreatophytic tree species that forms riparian forests in (hyper‐)arid regions of Central Asia. Its recruitment strongly relies on vegetative propagation from ‘root suckers’ that emerge from underground root spacers. The water transport through the spacers, although decisive for emerging ramets, has only rarely been quantified, but is crucial for the vegetative regeneration of the forests.</jats:p></jats:list-item> <jats:list-item><jats:p>In root spacers with different diameters collected from a mature poplar forest in northwest China, we calculated the hydraulic conductivity (<jats:italic>k</jats:italic><jats:sub>c</jats:sub>) from anatomical investigations on the basis of a modified Hagen‐Poiseuille equation and measured it (<jats:italic>k</jats:italic><jats:sub>m</jats:sub>) with a perfusion solution in the laboratory. The <jats:italic>k</jats:italic><jats:sub>m</jats:sub> values were compared with the water use by young and mature <jats:italic>P. euphratica</jats:italic> trees determined in previous studies.</jats:p></jats:list-item> <jats:list-item><jats:p>We obtained a significant correlation between <jats:italic>k</jats:italic><jats:sub>m</jats:sub> and <jats:italic>k</jats:italic><jats:sub>c</jats:sub> (which, however, was higher by at least one order of magnitude). Due to the extensive occurrence of tyloses, particularly in older conduits and thicker spacers, and because the conduit area did not increase with spacer diameter, neither <jats:italic>k</jats:italic><jats:sub>c</jats:sub> nor <jats:italic>k</jats:italic><jats:sub>m</jats:sub> increased with an increase in spacer diameter. The water supply through the spacers would be sufficient to meet the water demand even of mature trees.</jats:p></jats:list-item> <jats:list-item><jats:p>Our results provide a mechanistic explanation for the observed occurrence of <jats:italic>P. euphratica</jats:italic> clones across large areas and, provided that they are also valid for stands with larger distances to the water table, for the sustained growth and vegetative reproduction of <jats:italic>P. euphratica</jats:italic> stands growing at larger distances from the groundwater.</jats:p></jats:list-item> </jats:list> </jats:p> Belowground inter‐ramet water transport capacity in <i>Populus euphratica</i>, a Central Asian desert phreatophyte Plant Biology |
| spellingShingle | Hoppe, J., Zhang, X., Thomas, F. M., Plant Biology, Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte, Plant Science, Ecology, Evolution, Behavior and Systematics, General Medicine |
| title | Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_full | Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_fullStr | Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_full_unstemmed | Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_short | Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| title_sort | belowground inter‐ramet water transport capacity in <i>populus euphratica</i>, a central asian desert phreatophyte |
| title_unstemmed | Belowground inter‐ramet water transport capacity in Populus euphratica, a Central Asian desert phreatophyte |
| topic | Plant Science, Ecology, Evolution, Behavior and Systematics, General Medicine |
| url | http://dx.doi.org/10.1111/plb.13042 |