dc.date.accessioned |
2023-02-20T23:02:21Z |
|
dc.date.available |
2023-02-20T23:02:21Z |
|
dc.date.created |
2016-10-23T16:21:23Z |
|
dc.date.issued |
2016 |
|
dc.identifier.citation |
Wang, Yanliang, Krogstad, Tore, Clarke, Jihong, Hallama, Moritz, Øgaard, Anne K. Falk, Eich-Greatorex, Susanne, Kandeler, Ellen, Clarke, Nicholas. Rhizosphere Organic Anions Play a Minor Role in Improving Crop Species' Ability to Take Up Residual Phosphorus (P) in Agricultural Soils Low in P Availability. Frontiers in Plant Science 7 |
|
dc.identifier.issn |
1664-462X |
|
dc.identifier.uri |
http://hdl.handle.net/123456789/1068 |
|
dc.description.abstract |
Many arable lands have accumulated large reserves of residual phosphorus (P) and a relatively large proportion of soil P is less available for uptake by plants. Root released organic anions are widely documented as a key physiological strategy to enhance P availability, while limited information has been generated on the contribution of rhizosphere organic anions to P utilization by crops grown in agricultural soils that are low in available P and high in extractable Ca, Al, and Fe. We studied the role of rhizosphere organic anions in P uptake from residual P in four common crops Triticum aestivum, Avena sativa, Solanum tuberosum, and Brassica napus in low- and high-P availability agricultural soils from long-term fertilization field trials in a mini-rhizotron experiment with four replications. Malate was generally the dominant organic anion. More rhizosphere citrate was detected in low P soils than in high P soil. B. napus showed 74–103% increase of malate in low P loam, compared with clay loam. A. sativa had the greatest rhizosphere citrate concentration in all soils (5.3–15.2 μmol g−1 root DW). A. sativa also showed the highest level of root colonization by arbuscular mycorrhizal fungi (AMF; 36 and 40%), the greatest root mass ratio (0.51 and 0.66) in the low-P clay loam and loam respectively, and the greatest total P uptake (5.92 mg P/mini-rhizotron) in the low-P loam. B. napus had 15–44% more rhizosphere acid phosphatase (APase) activity, ~0.1–0.4 units lower rhizosphere pH than other species, the greatest increase in rhizosphere water-soluble P in the low-P soils, and the greatest total P uptake in the low-P clay loam. Shoot P content was mainly explained by rhizosphere APase activity, water-soluble P and pH within low P soils across species. Within species, P uptake was mainly linked to rhizosphere water soluble P, APase, and pH in low P soils. The effects of rhizosphere organic anions varied among species and they appeared to play minor roles in improving P availability and uptake. |
|
dc.language |
EN |
|
dc.publisher |
Frontiers Research Foundation |
|
dc.title |
Rhizosphere Organic Anions Play a Minor Role in Improving Crop Species' Ability to Take Up Residual Phosphorus (P) in Agricultural Soils Low in P Availability |
|
dc.type |
Academic article |
|
cristin.ispublished |
true |
|
cristin.fulltext |
original |
|
cristin.qualitycode |
1 |
|
dc.creator.author |
Wang, Yanliang |
|
dc.creator.author |
Krogstad, Tore |
|
dc.creator.author |
Clarke, Jihong |
|
dc.creator.author |
Hallama, Moritz |
|
dc.creator.author |
Øgaard, Anne K. Falk |
|
dc.creator.author |
Eich-Greatorex, Susanne |
|
dc.creator.author |
Kandeler, Ellen |
|
dc.creator.author |
Clarke, Nicholas |
|
dc.identifier.cristin |
1393746 |
|
dc.identifier.bibliographiccitation |
info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Frontiers in Plant Science&rft.volume=7&rft.date=2016 |
|
dc.identifier.jtitle |
Frontiers in Plant Science |
|
dc.identifier.volume |
7 |
|
dc.identifier.pagecount |
14 |
|
dc.identifier.doi |
http://dx.doi.org/10.3389/fpls.2016.01664 |
|
dc.type.document |
Artikkel |
|