Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

Tetraploid Citrumelo 4475 (Citrus paradisi L. Macf. × Poncirus trifoliata L. Raf.) Rootstocks Improve Common Clementine Tolerance to Long-term Nutrient Deficiency (Citrus clementina Hort. ex Tan)

Abstract : Nutrient deficiency alters growth and the production of high-quality nutritious food. In Citrus crops, rootstock technologies have become a key tool for enhancing tolerance to abiotic stress. The use of doubled diploid rootstocks can improve adaptation to lower nutrient inputs. This study investigated leaf structure and ultrastructure and physiological and biochemical parameters of common clementine scions (C) grafted on diploid (2x) and doubled diploid (4x) Carrizo citrange (C/CC2x and C/CC4x) and Citrumelo 4475 (C/CM2x and C/CM4x) rootstocks under optimal fertigation and after seven months of nutrient deficiency. Rootstock ploidy level had no impact on structure but induced changes in the number and/or size of cells and some cell components of common clementine leaves under optimal nutrition. Rootstock ploidy level did not modify gas exchanges in Carrizo citrange but induced a reduction in the leaf net photosynthetic rate in Citrumelo 4475. By assessing foliar damage, changes in photosynthetic processes and malondialdehyde accumulation, we found that C/CM4x were less affected by nutrient deficiency than the other scion/rootstock combinations. Their greater tolerance to nutrient deficiency was probably due to the better performance of the enzyme-based antioxidant system. Nutrient deficiency had similar impacts on C/CC2x and C/CC4x. Tolerance to nutrient deficiency can therefore be improved by rootstock polyploidy but remains dependent on the rootstock genotype.
Document type :
Preprints, Working Papers, ...
Complete list of metadata

https://hal.inrae.fr/hal-03102354
Contributor : Dominique Tiziani <>
Submitted on : Thursday, January 7, 2021 - 3:07:31 PM
Last modification on : Monday, March 29, 2021 - 11:58:09 AM

File

2021_Oustric_Frontiers_Plant_S...
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Julie Oustric, Stéphane Herbette, Yann Quilichini, Raphaël Morillon, Jean Giannettini, et al.. Tetraploid Citrumelo 4475 (Citrus paradisi L. Macf. × Poncirus trifoliata L. Raf.) Rootstocks Improve Common Clementine Tolerance to Long-term Nutrient Deficiency (Citrus clementina Hort. ex Tan). 2021. ⟨hal-03102354⟩

Share

Metrics

Record views

125

Files downloads

175