Carbohydrate Depletion in Roots and Leaves of Salt-Stressed Potted Citrus clementina L.
By V. Arbona, Aurelio J. Marco, D. Iglesias, M. López-Climent, Manuel Talón, A. Gómez-Cádenas. Plant growth regulation (Print), 2005
104 citations recorded by the source corpus.
In citrus, damage produced by salinity is mostly due to toxic ion accumulation, since this salt-sensitive crop adjusts osmotically with high efficiency. In spite of this observation, the putative role of sugars as osmolites under salinity remains unknown. In this work, we have studied carbohydrate contents (total hexoses, sucrose and starch) in leaves and roots of citrus grown under increasing salinity. The experimental system was characterized through the analyses of several parameters known to be strongly affected by salinity in citrus, such as chloride accumulation, photosynthetic rate, ethylene production and leaf abscission. Three-year-old plants of the Clementina de Nules cultivar grafted on Carrizo citrange rootstock were watered with three different levels of salinity (NaCl was added to the watering solutions to achieve final concentrations of 30, 60 and 90 mM). Data indicate that salt stress caused an accumulation of chloride ions in a way proportional to the external increase in NaCl. The adverse conditions reduced CO2 assimilation, increased ethylene production and triggered abscission of the injured leaves. Data also show that salinity induced progressive depletions of carbohydrates in leaves and roots of citrus plants. This observation clearly indicates that sugar accumulation is not a main component of the osmotic adjustment machinery in citrus.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/87055d216c879e083a60448bbe63533b6313b645
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Citations in the corpus
- Physiology of citrus fruiting (2007, background): “Among the physiological processes leading to general reduction of growth, photosynthetic activity, transpiration, stomatal conductance, and even root hydraulic conductivity have been shown to be decreased by salinity (Maas, 1993; Romero-Aranda et al., 1998; Moya et al., 1999; Arbona et al., 2005).”
- Elucidating the molecular mechanisms mediating plant salt-stress responses. (2018, background): “…Osmotic adjustment; carbon energy reserve; signal molecule; protecting lipid bilayer Oryza sativa, Solanum lycopersicum, etc. Root, leaf, fruit Arbona et al. (2005); reviewed by Gupta & Kaur (2005); Yin et al. (2010); Boriboonkaset et al. (2013) Complex sugars Raffinose Osmotic adjustment…”
- Physiological and biochemical responses of tomato microshoots to induced salinity stress with associated ethylene accumulation (2007, methodology): “Ethylene production has been reported to increase in plant species in response to salinity stress (Lutts et al. 1996; Arbona et al. 2005 ).”
- Microbial ACC-Deaminase: Prospects and Applications for Inducing Salt Tolerance in Plants (2010, background): “There are several reports of increase in ethylene production in different crops with increasing salinity levels and this increase also depends upon the growth stages of the plants (Jones and El-Abd, 1989; Bar et al., 1998; Botella et al., 2000; Arbona et al., 2005).”