Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation
We analyzed the effects of nitrate availability on growth of Navelina (Citrus sinensis (L.) Osbeck) scions grafted on three citrus rootstocks differing in salt tolerance: Carrizo citrange (Citrus sinensis (L.) Osbeck x Poncirus trifoliata (L.) Raf.), Citrus macrophylla Wester and Cleopatra mandarin...
| Main Authors: | , , , , , |
|---|---|
| Format: | article |
| Language: | Inglés |
| Published: |
2017
|
| Online Access: | http://hdl.handle.net/20.500.11939/5366 |
| _version_ | 1855032267887345664 |
|---|---|
| author | Iglesias, Domingo J. Levy, Y. Gómez-Cadenas, Aurelio Tadeo, Francisco R. Primo-Millo, Eduardo Talón, Manuel |
| author_browse | Gómez-Cadenas, Aurelio Iglesias, Domingo J. Levy, Y. Primo-Millo, Eduardo Tadeo, Francisco R. Talón, Manuel |
| author_facet | Iglesias, Domingo J. Levy, Y. Gómez-Cadenas, Aurelio Tadeo, Francisco R. Primo-Millo, Eduardo Talón, Manuel |
| author_sort | Iglesias, Domingo J. |
| collection | ReDivia |
| description | We analyzed the effects of nitrate availability on growth of Navelina (Citrus sinensis (L.) Osbeck) scions grafted on three citrus rootstocks differing in salt tolerance: Carrizo citrange (Citrus sinensis (L.) Osbeck x Poncirus trifoliata (L.) Raf.), Citrus macrophylla Wester and Cleopatra mandarin (Citrus reshni Hort. ex Tanaka). Salt stress reduced total plant biomass by 27-38%, whereas potassium nitrate supplementation partially counteracted this effect by increasing dry matter and new leaf area. Salinized Carrizo citrange had the greatest response to nitrate supplementation, whereas the effects on salinized Cleopatra mandarin and C. macrophylla were less apparent. Nitrogen and chlorophyll contents and photosynthetic activity also increased in leaves of the nitrate-supplemented salinized plants. In salinized plants, nitrate supplementation reduced leaf abscission, stimulated photosynthetic activity and increased growth of new leaves. The nitrate treatment did not modify chloride concentration in leaves, but it reduced chloride concentrations in Carrizo and Macro-phylla roots. Therefore, in both rootstocks, chloride content was similar in mature leaves, higher in immature leaves and lower in roots of the nitrate-supplemented salinized plants compared with salinized plants unsupplemented with nitrate. We suggest that the nitrate-induced stimulation of growth reduced chloride concentration in roots through the reallocation of chloride to new leaves. |
| format | article |
| id | ReDivia5366 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | ReDivia53662025-04-25T14:42:11Z Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation Iglesias, Domingo J. Levy, Y. Gómez-Cadenas, Aurelio Tadeo, Francisco R. Primo-Millo, Eduardo Talón, Manuel We analyzed the effects of nitrate availability on growth of Navelina (Citrus sinensis (L.) Osbeck) scions grafted on three citrus rootstocks differing in salt tolerance: Carrizo citrange (Citrus sinensis (L.) Osbeck x Poncirus trifoliata (L.) Raf.), Citrus macrophylla Wester and Cleopatra mandarin (Citrus reshni Hort. ex Tanaka). Salt stress reduced total plant biomass by 27-38%, whereas potassium nitrate supplementation partially counteracted this effect by increasing dry matter and new leaf area. Salinized Carrizo citrange had the greatest response to nitrate supplementation, whereas the effects on salinized Cleopatra mandarin and C. macrophylla were less apparent. Nitrogen and chlorophyll contents and photosynthetic activity also increased in leaves of the nitrate-supplemented salinized plants. In salinized plants, nitrate supplementation reduced leaf abscission, stimulated photosynthetic activity and increased growth of new leaves. The nitrate treatment did not modify chloride concentration in leaves, but it reduced chloride concentrations in Carrizo and Macro-phylla roots. Therefore, in both rootstocks, chloride content was similar in mature leaves, higher in immature leaves and lower in roots of the nitrate-supplemented salinized plants compared with salinized plants unsupplemented with nitrate. We suggest that the nitrate-induced stimulation of growth reduced chloride concentration in roots through the reallocation of chloride to new leaves. 2017-06-01T10:12:14Z 2017-06-01T10:12:14Z 2004 SEP 2004 article Iglesias, D. J., Levy, Y., Gomez-Cadenas, A., Tadeo, F.R., Primo-Millo, E., Talón, M. (2004). Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation. Tree physiology, 24(9), 1027-1034. 0829-318X http://hdl.handle.net/20.500.11939/5366 10.1093/treephys/24.9.1027 en openAccess Impreso |
| spellingShingle | Iglesias, Domingo J. Levy, Y. Gómez-Cadenas, Aurelio Tadeo, Francisco R. Primo-Millo, Eduardo Talón, Manuel Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation |
| title | Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation |
| title_full | Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation |
| title_fullStr | Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation |
| title_full_unstemmed | Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation |
| title_short | Nitrate improves growth in salt-stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation |
| title_sort | nitrate improves growth in salt stressed citrus seedlings through effects on photosynthetic activity and chloride accumulation |
| url | http://hdl.handle.net/20.500.11939/5366 |
| work_keys_str_mv | AT iglesiasdomingoj nitrateimprovesgrowthinsaltstressedcitrusseedlingsthrougheffectsonphotosyntheticactivityandchlorideaccumulation AT levyy nitrateimprovesgrowthinsaltstressedcitrusseedlingsthrougheffectsonphotosyntheticactivityandchlorideaccumulation AT gomezcadenasaurelio nitrateimprovesgrowthinsaltstressedcitrusseedlingsthrougheffectsonphotosyntheticactivityandchlorideaccumulation AT tadeofranciscor nitrateimprovesgrowthinsaltstressedcitrusseedlingsthrougheffectsonphotosyntheticactivityandchlorideaccumulation AT primomilloeduardo nitrateimprovesgrowthinsaltstressedcitrusseedlingsthrougheffectsonphotosyntheticactivityandchlorideaccumulation AT talonmanuel nitrateimprovesgrowthinsaltstressedcitrusseedlingsthrougheffectsonphotosyntheticactivityandchlorideaccumulation |