Ion‐dependent metabolic responses of Vicia faba L. to salt stress

Abstract

Salt-affected farmlands are increasingly burdened by chlorides, carbonates, and sulfates of sodium, calcium, and magnesium. Intriguingly, the underlying physiological processes are studied almost always under NaCl stress. Two faba bean cultivars were subjected to low- and high-salt treatments of NaCl, Na SO , and KCl. Assimilation rate and leaf water vapor conductance were reduced to approximately 25-30% without biomass reduction after 7 days salt stress, but this did not cause severe carbon shortage. The equimolar treatments of Na , K , and Cl showed comparable accumulation patterns in leaves and roots, except for SO which did not accumulate. To gain a detailed understanding of the effects caused by the tested ion combinations, we performed nontargeted gas chromatography-mass spectrometry-based metabolite profiling. Metabolic responses to various salts were in part highly linearly correlated, but only a few metabolite responses were common to all salts and in both cultivars. At high salt concentrations, only myo-inositol, allantoin, and glycerophosphoglycerol were highly significantly increased in roots under all tested conditions. We discovered several metabolic responses that were preferentially associated with the presence of Na , K , or Cl . For example, increases of leaf proline and decreases of leaf fumaric acid and malic acid were apparently associated with Cl accumulation.

Effect of Exopolysaccharide-Producing Bacteria and Melatonin on Faba Bean Production in Saline and Non-Saline Soil

“…Hahm et al [43] also reported that reducing RWC is an ideal action for helping plants to resist osmotic stress. The accumulation of proline under salinity stress is considered to be an indicator in several plant species [14,44]. This compound acts in the protection of cellular components by dehydration, maintaining the membrane structure and acting as a free radical scavenger [45].…”

Multifaceted regulatory function of tomato SlTAF1 in the response to salinity stress

“…A decline in the content of the TCA cycle intermediates is frequently observed in glycophytes under salt stress (Gong et al, 2005;Sanchez et al, 2008;Zhao et al, 2014;Richter et al, 2019). A decline in the content of the TCA cycle intermediates is frequently observed in glycophytes under salt stress (Gong et al, 2005;Sanchez et al, 2008;Zhao et al, 2014;Richter et al, 2019).…”

“…The TCA cycle plays a central role in energy metabolism. A decline in the content of the TCA cycle intermediates is frequently observed in glycophytes under salt stress (Gong et al , ; Sanchez et al , ; Zhao et al , ; Richter et al , ). In all genotypes tested here (i.e.…”

Salt-Induced Damage is Alleviated by Short-Term Pre-Cold Treatment in Bermudagrass (Cynodon dactylon)

“…The Na + was accumulated, while K + content decreased in Arabidopsis [7]. The change of ion accumulation will affect the metabolic process further [8]. Simultaneously, the chlorophyll content decreased in plant under salt stress [9].…”