The role of organic solutes in the osmotic adjustment of chilling-stressed plants (vegetable, ornamental and crop plants)

Shafiei-Masouleh, Seyedeh-Somayyeh; Aldine, Narjes Jamal; Sassine, Y.N.

doi:10.1590/2447-536x.v25i4.2073

Cited by 26 publications

(13 citation statements)

References 24 publications

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“…In the same way, B. subtilis BERA71 inoculated plants showed higher content of GB and other osmolytes in Acacia gerrardii under saline conditions (Hashem et al, 2016). Ectoine (1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylic acid) is another osmolyte that gets accumulated in plant cytoplasm on the exposure of salinity stress (Masouleh, 2019). Synthesis of ectoine in bacteria involves role of three enzymes i.e., L-2,4-diaminobutyric acid aminotransferase, L-2,4-diaminobutyric acid acetyl transferase and L-ectoine synthase (triggered by genes ectB, ectA, and ectC respectively) to compensate nitrate impairment in plant roots (Moghaieb et al, 2006(Moghaieb et al, , 2011.…”

Section: Osmoprotectants/compatible Solutesmentioning

confidence: 79%

Secondary Metabolites From Halotolerant Plant Growth Promoting Rhizobacteria for Ameliorating Salinity Stress in Plants

Kumari

Mishra

et al. 2020

Front. Microbiol.

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Soil salinization has emerged as one of the prime environmental constraints endangering soil quality and agricultural productivity. Anthropogenic activities coupled with rapid pace of climate change are the key drivers of soil salinity resulting in degradation of agricultural lands. Increasing levels of salt not only impair structure of soil and its microbial activity but also restrict plant growth by causing harmful imbalance and metabolic disorders. Potential of secondary metabolites synthesized by halotolerant plant growth promoting rhizobacteria (HT-PGPR) in the management of salinity stress in crops is gaining importance. A wide array of secondary metabolites such as osmoprotectants/compatible solutes, exopolysaccharides (EPS) and volatile organic compounds (VOCs) from HT-PGPR have been reported to play crucial roles in ameliorating salinity stress in plants and their symbiotic partners. In addition, HT-PGPR and their metabolites also help in prompt buffering of the salt stress and act as biological engineers enhancing the quality and productivity of saline soils. The review documents prominent secondary metabolites from HT-PGPR and their role in modulating responses of plants to salinity stress. The review also highlights the mechanisms involved in the production of secondary metabolites by HT-PGPR in saline conditions. Utilizing the HT-PGPR and their secondary metabolites for the development of novel bioinoculants for the management of saline agro-ecosystems can be an important strategy in the future.

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Section: Osmoprotectants/compatible Solutesmentioning

confidence: 79%

Secondary Metabolites From Halotolerant Plant Growth Promoting Rhizobacteria for Ameliorating Salinity Stress in Plants

Kumari

Mishra

et al. 2020

Front. Microbiol.

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“…3 ; Supplementary Data Tables S8 and S13 ). As is well known, when plants are subjected to external cold stress, the carbohydrate assimilation rate will be reduced, accompanied by reduced efficiency of the calvin cycle [ 53 ] and decreased fluidity of the plasma membrane, which is easily destroyed [ 54 – 56 ], resulting in an increase in membrane permeability, relative electrolyte leakage, and intracellular ion imbalance [ 57 ]. In this respect, our results indicated that lipid metabolism is the first player in the chilling response in Csa/Cmo and Cmo/Csa heterografts compared with Csa/Csa homografts [ 29 , 58 – 62 ].…”

Section: Discussionmentioning

confidence: 99%

Rootstock–scion exchanging mRNAs participate in the pathways of amino acid and fatty acid metabolism in cucumber under early chilling stress

Liu

Wang

Zhang

et al. 2022

Horticulture Research

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Cucumber (Cucumis sativus L.) often experiences chilling stress that limits their growth and productivity. Grafting is widely used to improve abiotic stress resistance by alternating a vigorous root system, suggesting there exists systemic signals communication between distant organs. mRNAs are reported to be evolving in fortification strategies by long-distance signaling when plants suffering from chilling stress. However, the potential function of mobile mRNAs alleviating chilling stress in grafted cucumber is still unknown. Here, the physiological changes, mobile mRNAs profiling, transcriptomic and metabolomic changes in above- and underground tissues of all graft combinations of cucumber and pumpkin responding to chilling stress were established and analyzed comprehensively. The co-relationship between the cluster of chilling-induced pumpkin mobile mRNAs with Differentially Expressed Genes (DEGs) and Differentially Intensive Metabolites (DIMs) revealed that four key chilling-induced pumpkin mobile mRNAs were highly related to glycine, serine and threonine synthesis and fatty acid β-oxidative degradation metabolism in cucumber tissues of heterografts. The verification of mobile mRNAs, potential transport of metabolites and exogenous application of key metabolites of glycerophospholipid metabolism pathway in cucumber seedlings confirmed that the role of mobile mRNAs in regulating chilling responses in grafted cucumber. Our results build a link between the long-distance mRNAs of chilling-tolerant pumpkin and the fatty acid β-oxidative degradation metabolism of chilling-sensitive cucumber. It helps to uncover the mechanism of signaling interaction between scion and stock responding to chilling tolerant in grafted cucumber.

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“…Then, the plasma membrane is composed of lipid bilayers and is important for plant biological responses. When plants are subjected to external cold stress, plasma membrane fluidity decreases and membrane lipids change from a liquid crystal state to a gel state, resulting in an increase in membrane permeability, relative electrolyte leakage and intracellular ion imbalance (Grant and Loake, 2000;Huang et al, 2015;Masouleh et al, 2019). MDA is also the product of cell membrane lipid peroxidation and can therefore be used to measure the level of membrane lipid peroxidation under stress (Supplementary Figure S2B).…”

Section: Relative Electrolyte Permeability Is the Most Effective Indicator To Evaluate Cold Tolerance In Diversity Of Cropsmentioning

confidence: 99%

Transcriptomic and Physiological Analysis Reveal That α-Linolenic Acid Biosynthesis Responds to Early Chilling Tolerance in Pumpkin Rootstock Varieties

et al. 2021

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Climate changes especially chilling stress affects cucurbit crops during winter seasonal production. Grafting to pumpkin rootstocks is widely used to improve the vigor of cucurbits, especially cucumber (Cucumis sativus L.) plants, in the face of chilling stress. In our study, multi-disciplinary aspect approaches were used to investigate growth changes of pumpkin under chilling stress. Firstly, the morphological and physiological characteristics of 14 pumpkin (Cucurbita moschata) varieties following different periods of chilling stress was analyzed by using physiological means. Mathematical results of principal component analysis (PCA) with chlorophyll-a, chlorophyll-b, carotenoid contents, chilling injury index and relative electrolyte permeability indicated that relative electrolyte permeability as the primary judgment index was best associated with the comparison of chilling tolerance in pumpkin rootstock varieties. Then, transcriptomic and DCMU (Diuron) application and chlorophyll fluorescence examination analysis of pumpkin leaves revealed that 390 Cucurbita moschata differentially expressed genes (CmoDEGs) that affect photosynthesis were upregulated in leaves. 127 CmoDEGs both in leaves and roots were enriched for genes involved in unsaturated fatty acid metabolism, suggesting that plasma membrane lipids are involved in chilling perception. The results of increased composition of unsaturated fatty acid in leaves and qRT-PCR analysis of relative mRNA abundance confirmed that α-linolenic acid biosynthesis was responding to pumpkin chilling tolerance. The integration of physiological, mathematical bioinformatical and biological analysis results contributes to our understanding of the molecular mechanisms underlying chilling tolerance and its improvement in cucumber grafted on pumpkin rootstocks. It provided an important theoretical basis and reference for further understanding on the impact of climate change on plant physiological changes.

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The role of organic solutes in the osmotic adjustment of chilling-stressed plants (vegetable, ornamental and crop plants)

Abstract: The role of organic soluTes in The osmoTic adjusTmenT of chilling-sTressed planTs (vegeTable, ornamenTal and crop planTs) 434

Cited by 26 publications

References 24 publications

Secondary Metabolites From Halotolerant Plant Growth Promoting Rhizobacteria for Ameliorating Salinity Stress in Plants

Secondary Metabolites From Halotolerant Plant Growth Promoting Rhizobacteria for Ameliorating Salinity Stress in Plants

Rootstock–scion exchanging mRNAs participate in the pathways of amino acid and fatty acid metabolism in cucumber under early chilling stress

Transcriptomic and Physiological Analysis Reveal That α-Linolenic Acid Biosynthesis Responds to Early Chilling Tolerance in Pumpkin Rootstock Varieties

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