Proline Accumulation in Plants: Roles in Stress Tolerance and Plant Development

Dar, Mudasir Irfan; Naikoo, Mohd Irfan; Rehman, Farha; Naushin, Fauzia; Khan, Fareed Ahmad

doi:10.1007/978-81-322-2616-1_9

Cited by 148 publications

(107 citation statements)

References 93 publications

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“…Therefore we propose that the accumulated proline also exhibited its antioxidant role and stabilized the wheat plant cells under bioherbicide application, the condition that was not developed in the canary grass plants due to decreased proline contents. Dar et al, (2016) also described proline accumulation in plant tissues for plant stabilization as it acts as osmoregulator in plant cells (Dar et al, 2016). We also suggest from our findings that the better growth of root and shoot length of wheat plants under bioherbicide application is also due to the presence of higher levels of proline contents.…”

Section: Discussionsupporting

confidence: 68%

Screening of active formulation from combined sunflower (Helianthus annuus) and neem (Azadirachta indica) aqueous extract to control growth of lesser canary grass (Phalaris minor).

Batool¹,

Riaz²,

Irum³

et al. 2019

PAK.J.BOT.

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The aim of study was to find an effective way of managing growth of lesser canary grass (Phalaris minor) in wheat fields. Sixteen formulations (F1-F16) were prepared by combining the aqueous extracts of sunflower (Helianthus annuus) and neem (Azadirachta indica) in specific ratios (10-40%). Remarkable allelopathic potential was exhibited by improved growth of wheat and inhibition of the weed growth. The regulatory effects were determined on plant root and shoot lengths, free proline and total phenolic contents, and the antioxidant potential of the wheat and weed plants in pot experiment. The findings suggested 'F3' as the most effective formulation prepared by combining one part of aqueous extracts of Helianthus annuus with three parts of Azadirachta indica extract [S (10%) + N (30%)], as its application (10 times dilution) stimulated the shoot length of wheat and inhibited the root length of canary grass plants. So, we propose this combination as an effective allelopathic strategy to control growth of lesser canary grass in wheat fields.

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Section: Discussionsupporting

confidence: 68%

Screening of active formulation from combined sunflower (Helianthus annuus) and neem (Azadirachta indica) aqueous extract to control growth of lesser canary grass (Phalaris minor).

Batool¹,

Riaz²,

Irum³

et al. 2019

PAK.J.BOT.

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“…The high Pro content might be related to decrease of lipid peroxidation, as indicated by lower TBARS content. Dar et al (2016) asserted that Pro plays roles in protection of membrane integrity and stabilisation of organic molecules.…”

Section: Discussionmentioning

confidence: 99%

Cold stress in soybean (Glycine max L.) roots: Exogenous gallic acid promotes water status and increases antioxidant activities

et al. 2019

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Gallic acid (GLA; 3,4,5-trihydroxybenzoic acid) is a strong antioxidant in plants. In order to clarify the effects of GLA as a pro-oxidant or an antioxidant on cells under stress conditions, soybean (Glycine max) was grown under normal conditions or in the presence of cold stress (5 and 10°C) in the absence or presence of gallic acid (GLA; 1 and 2 mM) for 72 h. The soybean roots exposed to stress exhibited a significant decline in growth (RGR), water content (RWC), osmotic potential (Ψ Π) and proline content (Pro). However, GLA treatment under stress significantly improved these parameters and alleviated the stress-generated damage. Stress decreased superoxide dismutase (SOD) activity, but GLA effectively mitigated the adverse effects on enzyme activity. After stress treatment, only catalase (CAT) was induced in soybean roots, although it was not sufficient to prevent toxic hydrogen peroxide (H 2 O 2) accumulation. Thus, the levels of lipid peroxidation (TBARS content) markedly increased. However, GLA contributed to detoxification of H 2 O 2 and lipid peroxidation by enhancing activities of CAT and peroxidase (POX). In addition to these enzymes, SOD activity was able to scavenge superoxide anion radicals, as evidenced by decline in TBARS content. However, monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), total ascorbate (tAsA) and glutathione (GSH) showed a decline of content in roots treated with GLA (both concentrations) plus stress. Our results suggest a protective role of GLA, which may strengthen plant tolerance by ensuring efficient water use and enhancing antioxidant systems. In soybean roots, GLA successfully alleviated the toxicity of cold stress by modulating the activities of SOD, CAT and POX rather than enzymes of the ascorbate-glutathione cycle.

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“…Plant proline biosynthesis is stimulated by abiotic and biotic stress conditions [37,38]. Tou et al [39] observed a greater proline accumulation in leaves of waterlogged peach plants, concluding that it was a tolerance mechanism to cope with this stress condition.…”

Section: Introductionmentioning

confidence: 99%

Physiological, Biochemical and Chlorophyll Fluorescence Parameters of Physalis Peruviana L. Seedlings Exposed to Different Short-Term Waterlogging Periods and Fusarium Wilt Infection

2019

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Cape gooseberry has coped with abiotic and biotic stresses such as prolonged waterlogging periods and vascular wilt in recent years. The aim of this study was to evaluate the influence of four waterlogging periods on stomatal conductance (gs), leaf water potential (Ψwf), plant growth, leaf photosynthetic pigments, malondialdehyde (MDA) production, proline content and chlorophyll fluorescence parameters in cape gooseberry plants infected with Fusarium oxysporum f. sp. physali (Foph). Two-month-old ecotype “Colombia” plants were arranged in a completely randomized factorial design in eight treatments: plants without waterlogging (control), plants with waterlogging for 4, 6 and 8 d with and without Foph, respectively. The area under the disease progress curve was higher in inoculated plants subjected to 6 and 8 d of waterlogging (55.25 and 64.25) compared to inoculated plants but without waterlogging (45.25). The results also showed a lower plant growth, gs, Ψwf, leaf photosynthetic pigments and chlorophyll fluorescence parameters (Fv/Fm, electron transport rate (ETR), Y (II) and qP) as waterlogging periods in plants with Foph increased. However, this group of plants showed a greater proline and malondialdehyde (MDA) accumulation and a higher NPQ. In conclusion, cape gooseberry shows a low acclimation to waterlogging conditions of more than 6 d in soils with Foph.

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Proline Accumulation in Plants: Roles in Stress Tolerance and Plant Development

Cited by 148 publications

References 93 publications

Screening of active formulation from combined sunflower (Helianthus annuus) and neem (Azadirachta indica) aqueous extract to control growth of lesser canary grass (Phalaris minor).

Screening of active formulation from combined sunflower (Helianthus annuus) and neem (Azadirachta indica) aqueous extract to control growth of lesser canary grass (Phalaris minor).

Cold stress in soybean (Glycine max L.) roots: Exogenous gallic acid promotes water status and increases antioxidant activities

Physiological, Biochemical and Chlorophyll Fluorescence Parameters of Physalis Peruviana L. Seedlings Exposed to Different Short-Term Waterlogging Periods and Fusarium Wilt Infection

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