The Potential of NO3--N Utilization by a Woody Shrub Species Lindera triloba: A Cultivation Test to Estimate the Saturation Point of Soil NO3–-N for Plants
Responses of seedlings of a shrub species, Lindera triloba, grown in perlite culture medium, to nitrate (NO3–-N) supply were investigated to estimate the saturating point of available NO3–-N for plant utilization. NO3–-N concentration and nitrate reductase activity (NRA) in leaves and roots were use...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2001-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/tsw.2001.378 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850208871053787136 |
|---|---|
| author | Lina Koyama Naoko Tokuchi Muneto Hirobe Keisuke Koba |
| author_facet | Lina Koyama Naoko Tokuchi Muneto Hirobe Keisuke Koba |
| author_sort | Lina Koyama |
| collection | DOAJ |
| description | Responses of seedlings of a shrub species, Lindera triloba, grown in perlite culture medium, to nitrate (NO3–-N) supply were investigated to estimate the saturating point of available NO3–-N for plant utilization. NO3–-N concentration and nitrate reductase activity (NRA) in leaves and roots were used as indicators of NO3–-N uptake and assimilation by L. triloba. Root NRA increased with NO3–-N supply when concentrations were low and reached a plateau at high NO3–-N concentrations. On the other hand, root NO3–-N concentration increased linearly with NO3–-N supply; therefore, it is suggested that NO3–-N uptake did not limit NO3–-N assimilation by L. triloba. In contrast, leaf NRA and leaf NO3–-N concentration were low and were not influenced by NO3–-N supply. This may be caused by the lack of transport of NO3–-N from roots to leaves. The NO3–-N retained in perlite was compared with NO3–-N pool sizes in soils from a forest where L. triloba occurs naturally to estimate the level of NO3–-N availability to plants in the forest soil. The maximum NO3–-N pool size in the forest soil was comparable to concentrations at which root NRA reached a plateau in perlite cultures. These results indicate that soil NO3–-N availability is below the saturation point for NO3–-N uptake by L. triloba, and it is the limiting factor of NO3–-N utilization by L. trilobaunder field conditions in which this species naturally occurs. |
| format | Article |
| id | doaj-art-981e49ff151e4f9eb76a4cbbace44599 |
| institution | OA Journals |
| issn | 1537-744X |
| language | English |
| publishDate | 2001-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-981e49ff151e4f9eb76a4cbbace445992025-08-20T02:10:09ZengWileyThe Scientific World Journal1537-744X2001-01-01151451910.1100/tsw.2001.378The Potential of NO3--N Utilization by a Woody Shrub Species Lindera triloba: A Cultivation Test to Estimate the Saturation Point of Soil NO3–-N for PlantsLina Koyama0Naoko Tokuchi1Muneto Hirobe2Keisuke Koba3Graduate School of Agriculture, JapanGraduate School of Agriculture, JapanGraduate School of Agriculture, JapanGraduate School of Agriculture, JapanResponses of seedlings of a shrub species, Lindera triloba, grown in perlite culture medium, to nitrate (NO3–-N) supply were investigated to estimate the saturating point of available NO3–-N for plant utilization. NO3–-N concentration and nitrate reductase activity (NRA) in leaves and roots were used as indicators of NO3–-N uptake and assimilation by L. triloba. Root NRA increased with NO3–-N supply when concentrations were low and reached a plateau at high NO3–-N concentrations. On the other hand, root NO3–-N concentration increased linearly with NO3–-N supply; therefore, it is suggested that NO3–-N uptake did not limit NO3–-N assimilation by L. triloba. In contrast, leaf NRA and leaf NO3–-N concentration were low and were not influenced by NO3–-N supply. This may be caused by the lack of transport of NO3–-N from roots to leaves. The NO3–-N retained in perlite was compared with NO3–-N pool sizes in soils from a forest where L. triloba occurs naturally to estimate the level of NO3–-N availability to plants in the forest soil. The maximum NO3–-N pool size in the forest soil was comparable to concentrations at which root NRA reached a plateau in perlite cultures. These results indicate that soil NO3–-N availability is below the saturation point for NO3–-N uptake by L. triloba, and it is the limiting factor of NO3–-N utilization by L. trilobaunder field conditions in which this species naturally occurs.http://dx.doi.org/10.1100/tsw.2001.378 |
| spellingShingle | Lina Koyama Naoko Tokuchi Muneto Hirobe Keisuke Koba The Potential of NO3--N Utilization by a Woody Shrub Species Lindera triloba: A Cultivation Test to Estimate the Saturation Point of Soil NO3–-N for Plants The Scientific World Journal |
| title | The Potential of NO3--N Utilization by a Woody Shrub Species Lindera triloba: A Cultivation Test to Estimate the Saturation Point of Soil NO3–-N for Plants |
| title_full | The Potential of NO3--N Utilization by a Woody Shrub Species Lindera triloba: A Cultivation Test to Estimate the Saturation Point of Soil NO3–-N for Plants |
| title_fullStr | The Potential of NO3--N Utilization by a Woody Shrub Species Lindera triloba: A Cultivation Test to Estimate the Saturation Point of Soil NO3–-N for Plants |
| title_full_unstemmed | The Potential of NO3--N Utilization by a Woody Shrub Species Lindera triloba: A Cultivation Test to Estimate the Saturation Point of Soil NO3–-N for Plants |
| title_short | The Potential of NO3--N Utilization by a Woody Shrub Species Lindera triloba: A Cultivation Test to Estimate the Saturation Point of Soil NO3–-N for Plants |
| title_sort | potential of no3 n utilization by a woody shrub species lindera triloba a cultivation test to estimate the saturation point of soil no3 n for plants |
| url | http://dx.doi.org/10.1100/tsw.2001.378 |
| work_keys_str_mv | AT linakoyama thepotentialofno3nutilizationbyawoodyshrubspecieslinderatrilobaacultivationtesttoestimatethesaturationpointofsoilno3nforplants AT naokotokuchi thepotentialofno3nutilizationbyawoodyshrubspecieslinderatrilobaacultivationtesttoestimatethesaturationpointofsoilno3nforplants AT munetohirobe thepotentialofno3nutilizationbyawoodyshrubspecieslinderatrilobaacultivationtesttoestimatethesaturationpointofsoilno3nforplants AT keisukekoba thepotentialofno3nutilizationbyawoodyshrubspecieslinderatrilobaacultivationtesttoestimatethesaturationpointofsoilno3nforplants AT linakoyama potentialofno3nutilizationbyawoodyshrubspecieslinderatrilobaacultivationtesttoestimatethesaturationpointofsoilno3nforplants AT naokotokuchi potentialofno3nutilizationbyawoodyshrubspecieslinderatrilobaacultivationtesttoestimatethesaturationpointofsoilno3nforplants AT munetohirobe potentialofno3nutilizationbyawoodyshrubspecieslinderatrilobaacultivationtesttoestimatethesaturationpointofsoilno3nforplants AT keisukekoba potentialofno3nutilizationbyawoodyshrubspecieslinderatrilobaacultivationtesttoestimatethesaturationpointofsoilno3nforplants |