Effect of NaCl on proline and glycinebetaine metabolism in Kosteletzkya pentacarpos exposed to Cd and Zn toxicities

Zhou, Mingxi; Renard, Marie Éve; Quinet, Muriel; Lutts, Stanley

doi:10.1007/s11104-019-04143-5

Cited by 20 publications

(19 citation statements)

References 45 publications

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“…Microorganisms are essential components of the soil ecosystem on the Tibetan Plateau and they play key roles in the health of the ecosystem [ 7 , 8 ]. Microorganisms adapt to high salinity environment mainly through two mechanisms comprising the synthesis or absorption of organic osmotic agents, and absorbing K + and other inorganic ions to resist osmotic stress [ 9 , 10 ], thereby maintaining the normal life activities of cells under high osmotic pressure conditions. Meanwhile microbial community also adapt to salinity by adjusting its composition and enhancing interactions [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Bacterial community in saline farmland soil on the Tibetan plateau: responding to salinization while resisting extreme environments

Chai

Wang

et al. 2021

BMC Microbiol

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Background Salinization damages the health of soil systems and reduces crop yields. Responses of microbial communities to salinized soils and their functional maintenance under high salt stress are valuable scientific problems. Meanwhile, the microbial community of the salinized soil in the plateau environment is less understood. Here, we applied metagenomics technology to reveal the structure and function of microorganisms in salinized soil of the Tibetan Plateau. Results The diversity of composition and function of microbial community in saline soil have changed significantly. The abundances of chemoautotrophic and acidophilic bacteria comprising Rhodanobacter, Acidobacterium, Candidatus Nitrosotalea, and Candidatus Koribacter were significantly higher in saline soil. The potential degradation of organic carbon in the saline soil, as well as the production of NO and N2O via denitrification, and the production of sulfate by sulfur oxidation were significantly higher than the non-saline soil. Both types of soils were rich in genes encoding resistance to environmental stresses (i.e., cold, ultraviolet light, and hypoxia in Tibetan Plateau). The resistance of the soil microbial communities to the saline environment is based on the absorption of K+ as the main mechanism, with cross-protection proteins and absorption buffer molecules as auxiliary mechanisms in our study area. Network analysis showed that functional group comprising chemoautotrophic and acidophilic bacteria had significant positive correlations with electrical conductivity and total sulfur, and significant negative correlations with the total organic carbon, pH, and available nitrogen. The soil moisture, pH, and electrical conductivity are likely to affect the bacterial carbon, nitrogen, and sulfur cycles. Conclusions These results indicate that the specific environment of the Tibetan Plateau and salinization jointly shape the structure and function of the soil bacterial community, and that the bacterial communities respond to complex and harsh living conditions. In addition, environmental feedback probably exacerbates greenhouse gas emissions and accelerates the reduction in the soil pH. This study will provide insights into the microbial responses to soil salinization and the potential ecological risks in the special plateau environment.

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Section: Introductionmentioning

confidence: 99%

Bacterial community in saline farmland soil on the Tibetan plateau: responding to salinization while resisting extreme environments

Chai

Wang

et al. 2021

BMC Microbiol

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“…When considering absorption by Ricinus communis L., the interaction pattern of Cd and Zn showed antagonistic behavior with low concentrations of Cd and Zn (Cd: 1 mg kg −1 soil, Zn: 100 mg kg −1 dry weight soil), but they exhibited a synergistic behavior with high concentrations of the combination of Cd and Zn (Cd: 40 mg kg −1 soil, Zn: 800 mg kg −1 dry weight soil) [23]. In K. pentacarpos, regardless of whether it was exposed to Cd and Zn toxicity for 2 days or for 3 weeks, the excessive Zn had a negative effect on Cd accumulation in the root of plants that were simultaneously exposed to both heavy metals [14,15]. It is well established that Cd and Zn share numerous biochemical properties and that Cd is mainly absorbed by poorly selective Zn transporters (e.g., natural resistance-associated macrophage protein, NRAMP) [24,25].…”

Section: The Specific Response In K Pentacarpos Exposed To Simultaneo...mentioning

confidence: 99%

“…In addition to phytohormones, widespread osmoprotectant proline exists in almost all kinds of plant species as an essential amino acid, while glycinebetaine (GB) accumulates in a limited number of plant species, such as halophyte plants [59]. The combination of Cd and Zn toxicities significantly reduced proline biosynthesis compared to Cd alone in K. pentacarpos [15]. Tripathi et al [60] found that the activities of pyrroline-5-carboxylate synthetase (P5CS) and pyrroline-5-carboxylate reductase (P5CR) were increased immediately in Triticum aestivum (Wheat) exposed to excessive Cu and Cd.…”

Section: Plant Hormones Status and Osmoprotectants In K Pentacarposmentioning

confidence: 99%

“…The proline dehydrogenase activity sharply decreased in the early phases of combined Cd and Zn exposure (up to 12 h) but remained unchanged thereafter until the end of the experiment. It has been suggested that the glutamate pathway and ornithine pathway play an equivalent role in proline synthesis in K. pentacarpos that has been exposed to the stress of heavy metal [15]. On the other hand, it is speculated that the shared precursor, ornithine, could also participate in Put synthesis under mixed treatments [15].…”

Section: Plant Hormones Status and Osmoprotectants In K Pentacarposmentioning

confidence: 99%

“…Recently, K. pentacarpos was proven to have capacities making it able to cope with multiple meta(loid) contamination in salty soil [13][14][15]. Hence, this review summarized the current understanding of the behavior of K. pentacarpos that has been exposed to NaCl and multiple meta(loid) pollutants simultaneously.…”

Section: Introductionmentioning

confidence: 99%

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Kosteletzkya pentacarpos: A Potential Halophyte Candidate for Phytoremediation in the Meta(loid)s Polluted Saline Soils

Zhou

Lutts

Han

2021

Plants

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Kosteletzkya pentacarpos (L.) Ledebour is a perennial facultative halophyte species from the Malvacea family that grows in coastal areas with high amounts of salt. The tolerance of K. pentacarpos to the high concentration of salt (0.5–1.5% salinity range of coastal saline land) has been widely studied for decades. Nowadays, with the dramatic development of the economy and urbanization, in addition to the salt, the accumulation of mate(loid)s in coastal soil is increasing, which is threatening the survival of halophyte species as well as the balance of wetland ecosystems. Recently, the capacity of K. pentacarpos to cope with either single heavy metal stress or a combination of multiple meta(loid) toxicities was studied. Hence, this review focused on summarizing the physiological and biochemical behaviors of K. pentacarpos that has been simultaneously exposed to the combination of several meta(loid) toxicities. How the salt accumulated by K. pentacarpos impacts the response to meta(loid) stress was discussed. We conclude that as a potential candidate for phytoremediation, K. pentacarpos was able to cope with various environmental constrains such as multiple meta(loid) stresses due to its relative tolerance to meta(loid) toxicity.

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Drought- and Salt-Tolerant Populations of the Xero-Halophyte Mediterranean Shrub Atriplex halimus L. Exhibit Contrasting Proline and Glycinebetaine Metabolism

Casasni,

Chaouia,

Martínez

et al. 2024

J Plant Growth Regul

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Effect of NaCl on proline and glycinebetaine metabolism in Kosteletzkya pentacarpos exposed to Cd and Zn toxicities

Cited by 20 publications

References 45 publications

Bacterial community in saline farmland soil on the Tibetan plateau: responding to salinization while resisting extreme environments

Bacterial community in saline farmland soil on the Tibetan plateau: responding to salinization while resisting extreme environments

Kosteletzkya pentacarpos: A Potential Halophyte Candidate for Phytoremediation in the Meta(loid)s Polluted Saline Soils

Drought- and Salt-Tolerant Populations of the Xero-Halophyte Mediterranean Shrub Atriplex halimus L. Exhibit Contrasting Proline and Glycinebetaine Metabolism

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