Trehalose: A Key Player in Plant Growth Regulation and Tolerance to Abiotic Stresses

Hassan, Muhammad Umair; Nawaz, Muhammad; Shah, Adnan Noor; Raza, Ali; Barbanti, Lorenzo; Skalický, Milan; Hashem, Mohamed; Brestič, Marián; Pandey, Saurabh; Alamri, Saad; Mostafa, Yasser S.; Sabagh, Ayman El; Qari, Sameer H.

doi:10.1007/s00344-022-10851-7

Cited by 23 publications

(17 citation statements)

References 161 publications

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“…Plants accumulate various osmolytes as protection from the harmful impacts of abiotic stresses. Crosstalk between hormones and osmoprotectants generates positive and negative feedbacks, which affects hormones/osmolyte synthesis, transport, and signalling (Liang et al 2013;Iqbal et al 2014;Ghosh et al 2021;Hassan et al 2022;Mir et al 2022;Raza et al 2022f). Proline accretion has been reported in tomato leaves and floral buds under temperature stress; however, proline content was lower in leaves than in floral buds (Shin et al 2016).…”

Section: Proline Interaction and Crosstalk With Other Molecules Under...mentioning

confidence: 99%

Assessment of proline function in higher plants under extreme temperatures

et al. 2023

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Climate change and abiotic stress factors are key players in crop losses worldwide. Among which, extreme temperatures (heat and cold) disturb plant growth and development, reduce productivity and, in severe cases, lead to plant death. Plants have developed numerous strategies to mitigate the detrimental impact of temperature stress. Exposure to stress leads to the accumulation of various metabolites, e.g. sugars, sugar alcohols, organic acids and amino acids. Plants accumulate the amino acid 'proline' in response to several abiotic stresses, including temperature stress. Proline abundance may result from de novo synthesis, hydrolysis of proteins, reduced utilization or degradation. Proline also leads to stress tolerance by maintaining the osmotic balance (still controversial), cell turgidity and indirectly modulating metabolism of reactive oxygen species. Furthermore, the crosstalk of proline with other osmoprotectants and signalling molecules, e.g. glycine betaine, abscisic acid, nitric oxide, hydrogen sulfide, soluble sugars, helps to strengthen protective mechanisms in stressful environments. Development of less temperature-responsive cultivars can be achieved by manipulating the biosynthesis of proline through genetic engineering. This review presents an overview of plant responses to extreme temperatures and an outline of proline metabolism under such temperatures. The exogenous application of proline as a protective molecule under extreme temperatures is also presented. Proline crosstalk and interaction with other molecules is also discussed. Finally, the potential of genetic engineering of proline-related genes is explained to develop 'temperature-smart' plants. In short, exogenous application of proline and genetic engineering of proline genes promise ways forward for developing 'temperature-smart' future crop plants.

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Section: Proline Interaction and Crosstalk With Other Molecules Under...mentioning

confidence: 99%

Assessment of proline function in higher plants under extreme temperatures

et al. 2023

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“…When carbohydrates are continuously provided, chlorophyll degradation can be re-strained [ 29 , 77 , 78 ], resulting in a longer shelf life due to a thicker cell wall (skin stiffness) and antioxidant activity [ 25 , 34 ]. As a result, copper is thought to have aided plant defense mechanisms by activating plant-specific genes [ 19 , 22 ].…”

Section: Resultsmentioning

confidence: 99%

Modification of Sugar Profile and Ripening in Atemoya (Annona × atemoya Mabb.) Fruits through Copper Hydroxide Application

Cardoso

Campos

Napoleão

et al. 2023

Plants

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Atemoya (Annona × atemoya Mabb.), a climacteric fruit of the Annonaceae family, is becoming increasingly popular due to its organoleptic and nutritional properties. Anthracnose, a fungus of the Colletotrichum genus, is one of the most serious diseases in orchards, causing significant damage if not controlled, so producers use phytosanitary products. The current study sought to investigate the quality of atemoya fruits after harvest in an orchard with anthracnose controlled by Cu(OH)2 application: T1—no Cu(OH)2, T2—7.8 mL Cu(OH)2 L1 divided into two applications, T3—15.6 mL Cu(OH)2 L1 divided into four, T4—8.0 mL Cu(OH)2 L1 divided into eight, and T5—13.0 mL Cu(OH)2 L1 divided into thirteen applications. The sugar profile of fruits was examined, as well as MDA, H2O2, and quality parameters such as pH, mass, soluble solids, titratable acidity, and maturation index. MDA, such as H2O2, can function as a signal molecule. Eight applications of 1.0 mL L-1 Cu(OH)2 resulted in increased concentrations of H2O2 and MDA, signal molecules involved in sugar modification profiles such as glucose, fructose, and trehalose. It also had a high titratable acidity, a lower maturation index, better fruit quality, and a longer shelf life.

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“…However, exogenous supply of BR and AMF regulate the stomata opening, improve efficiency of PS-II and alleviate the inhabitation in photosynthesis and ensures the better photosynthetic efficiency, chlorophyll fluoresce and subsequently plant growth and development (Song et al, 2015). Under normal conditions, a dynamic balance is maintained between the production and clearance of intracellular ROS in plants (Wang et al, 2017;Hassan et al, 2023). However, ROS accumulate excessively under biotic/abiotic stress, leading to oxidase stress and lipid peroxidation.…”

Section: Discussion Discussion Discussionmentioning

confidence: 99%

Effects of exogenous brassinolide and AM fungi on growth, photosynthetic characteristics and antioxidant enzyme system of Leymus chinensis under salt and alkali stress

GAO,

LIU,

et al. 2023

Not Bot Horti Agrobo

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Salinity and alkali stresses are a major abiotic stress negatively affecting crop productivity around the globe. Therefore, it is mandatory to develop the effective measures to mitigate the adverse impacts of these stresses for ensuring sustainable crop productivity and food security. Therefore, a pot experiment determined the effects of brassinolide application, inoculation with AM fungi (Funneliformis mosseae) and their combined use on the growth, photosynthesis and antioxidant system of Leymus chinensis under saline-alkali stress (0, 150 mmol/L). The mechanism of the two to alleviate the saline-alkali stress of L. chinensis was explored. The physiological and biochemical indexes of Leymus chinensis were significantly affected under saline-alkali stress (150 mmol/L). Inoculation of AM fungi and application of brassinolide effectively increased the biomass accumulation in the upper part (∼ 25-40%) and root (15-35%) system of L. chinensis under saline-alkali stress. Further AMF also improved photosynthetic pigments (chlorophyll a, chlorophyll b), photosynthetic rate (Pn), Intercellular CO2 concentration (Ci), stomata conductance (Gs), transpiration rate (Tr), chlorophyll fluorescence antioxidant enzymes (SOD: superoxide dismutase. CAT: catalase APX: ascorbate peroxidase, GR: Glutathione reductase) activity, and decreased malondialdehyde (MDA: ∼ 40-50%) and hydrogen peroxide (H2O2: ∼ 30-40%) accumulation. Therefore, under saline-alkali stress conditions, the combination of brassinolide and AM fungi proved better to mitigate their toxic effects.

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Trehalose: A Key Player in Plant Growth Regulation and Tolerance to Abiotic Stresses

Cited by 23 publications

References 161 publications

Assessment of proline function in higher plants under extreme temperatures

Assessment of proline function in higher plants under extreme temperatures

Modification of Sugar Profile and Ripening in Atemoya (Annona × atemoya Mabb.) Fruits through Copper Hydroxide Application

Effects of exogenous brassinolide and AM fungi on growth, photosynthetic characteristics and antioxidant enzyme system of Leymus chinensis under salt and alkali stress

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