RT Journal Article
T1 Domestication influences morphological and physiological responses to salinity in Brassica oleracea seedlings
A1 Lema Márquez, Margarita
A1 Ali, Md. Y.
A1 Retuerto Franco, José Carlos Rubén
K1 Brassica crops
K1 Domesticated-wild
K1 Na+ exclusion
K1 Salt stress
K1 Succulence
AB Brassica oleracea cultivars include important vegetable and forage crops grown worldwide, whereas the wild counterpart occurs naturally on European sea cliffs. Domestication and selection processes have led to phenotypic and genetic divergence between domesticated plants and their wild ancestors that inhabit coastal areas and are exposed to saline conditions. Salinity is one of the most limiting factors for crop production. However, little is known about how salinity affects plants in relation to domestication of B. oleracea. The objective of this study was to determine the influence of domestication status (wild, landrace or cultivar) on the response of different B. oleracea crops to salinity, as measured by seed germination, plant growth, water content and mineral concentration parameters at the seedling stage. For this purpose, two independent pot experiments were conducted with six accessions of B. oleracea, including cabbage (group capitata) and kale (group acephala), in a growth chamber under controlled environmental conditions. In both taxonomic groups, differences in domestication status and salt stress significantly affected all major process such as germination, changes in dry matter, water relations and mineral uptake. In the acephala experiment, the domestication × salinity interaction significantly affected water content parameters and shoot Na+ allocation. At early stages of development, wild plants are more succulent than cultivated plants and have a higher capacity to maintain lower Na+ concentrations in their shoots in response to increasing levels of salinity. Different responses of domesticated and cultivated accessions in relation to these traits indicated a high level of natural variation in wild B. oleracea. Exclusion of Na+ from shoots and increasing succulence may enhance salt tolerance in B. oleracea exposed to extreme salinity in the long term. The wild germplasm can potentially be used to improve the salt tolerance of crops by the identification of useful genes and incorporation of these into salinity-sensitive cultivars.
PB Oxford University Press
SN 2041-2851
YR 2019
FD 2019
LK http://hdl.handle.net/10347/21388
UL http://hdl.handle.net/10347/21388
LA eng
NO M Lema, Md Y Ali, R Retuerto, Domestication influences morphological and physiological responses to salinity in Brassica oleracea seedlings, AoB PLANTS, Volume 11, Issue 5, October 2019, plz046, https://doi.org/10.1093/aobpla/plz046
NO M.L. recognizes an Isidro Parga Pondal-I2C Program fellowship from the Xunta de Galicia. Md.Y.A. was supported by the EXPERTS_II (Erasmus Mundus) Interchange Program
DS Minerva
RD 4 may 2026