Persistence, recovery and root traits of tall fescue genotypes with different flowering date under prolonged water stress

Pirnajmedin, Fatemeh; Majidi, Mohammad Mahdi; Saeidi, Ghodratollah; Gheysari, Mahdi; Volaire, Florence; Barré, Philippe; Osivand, A. H.; Sarfaraz, Danial

doi:10.1007/s10681-017-2060-8

Cited by 20 publications

(25 citation statements)

References 32 publications

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“…Norton, Malinowski, and Volaire (2016) demonstrated that perennial grasses with summer dormancy have lesser growth and yield potential during summer seasons than during spring and autumn and that they had better chances of survival in regions with extended hot and dry conditions. Consistent with our findings, some previous studies have reported the reduction of SUY in tall fescue which is due to high temperatures and induction of summer dormancy (Norton et al., 2006; Pirnajmedin et al., 2017).…”

Section: Discussionsupporting

confidence: 93%

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Amelioration of high temperature stress by exogenously applied salicylic acid: Genotype‐specific response of physiological traits

et al. 2020

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In arid and semi-arid regions of the world, high temperature stress adversely affects growth and development of cool-season grasses during late spring and summer. Salicylic acid (SA) is one of the endogenous plant growth regulators that plays an important role in the regulation of plant growth and development in response to high temperature stress. The aim of the present study was to assess the effectiveness of SA in alleviating the negative effects of high temperature during the summer in different tall fescue (Festuca arundinacea Schreb.) genotypes under field conditions. Twenty genotypes of tall fescue (selected from a broad native and exotic germplasm) were assessed at field condition for morphological and physiological characteristics during 2016 and 2017 under normal irrigation in the presence of two SA concentrations (0 and 1 mM). High temperature during the summer led to induction of incomplete summer dormancy and depression in summer forage yield. Application of SA decreased the adverse effects of high temperature stress by elevation of photosynthetic pigments, proline accumulation, and increasing nonenzyme and enzymatic antioxidant activities, and could therefore be used to enhance forage yield and heat tolerance in tall fescue genotypes. The genotypes exhibited obvious differences in their response to SA application under the semiarid climate conditions of central Iran. Among the studied genotypes, 3L and 1E were recognized as heat tolerant and stable genotypes that would be preferable for regions with high temperature.

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Section: Discussionsupporting

confidence: 93%

“…At each harvest, dry forage yield per plant, plant height (PH), and crown diameter (CD) were measured as recommended by Pirnajmedin et al. (2017). Summer dormancy was assessed using the summer dormancy index (S/SP):

normalS / normalSP = [100 - (\frac{summer yield}{spring yield} 100)] / 10

…”

Section: Methodsmentioning

confidence: 99%

Amelioration of high temperature stress by exogenously applied salicylic acid: Genotype‐specific response of physiological traits

et al. 2020

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“…Meanwhile, Abdollahi, Saeidnia, Majidi, and Mirlohi (2018) in orchardgrass and Pirnajmedin et al. (2017) in tall fescue reported that, after withholding irrigation for 2 months in same region, a few genotypes died. The significantly lower percentage of dead plants due to prolonged drought stress can be a sign of quicker recovery (Walter et al., 2011).…”

Section: Discussionmentioning

confidence: 99%

Genotypic‐specific responses caused by prolonged drought stress in smooth bromegrass (Bromus inermis): Interactions with mating systems

et al. 2020

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The consequences of recurrent drought events compared with a single drought, and drought's interaction with deliberate selfing compared with open‐pollination on postdrought recovery and persistence of smooth bromegrass, are not clear. This research was conducted to investigate the effects of recurrent drought stresses compared with a single drought on stress response, poststress recovery and persistence of full‐sib and half‐sib progenies of smooth bromegrass. During this study, 25 selfed (S1) and 25 open‐pollinated (OP) progenies of smooth bromegrass created in 2012 were evaluated in the field under normal and recurrent drought stress during 2013–2016. After the first harvest of above‐ground biomass in 2016, irrigation was withheld in both environments for 2 months; plants were subsequently re‐watered and evaluated. Recurrent drought stress changed the relationships between different traits. Moreover, prolonged drought stress resulted in increased plant productivity (recovery aerial biomass; RABI) of S1 and OP populations in recurrent drought stress compared with normal environment. Mandatory selfing increased persistence of smooth bromegrass genotypes but did not affect recovery after prolonged drought stress. Results revealed that, selecting among S1 families would be more effective than OP ones.

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“…Growth and development processes are inhibited when turfgrass is exposed to drought stress. It was reported that the growth and development of axillary buds and roots of tall fescue were inhibited by drought stress [10,87,88]. The lateral spread of the turfgrass was delayed with the duration of summer dry-down [89].…”

Section: Drought Stressmentioning

confidence: 99%

Mechanisms of Environmental Stress Tolerance in Turfgrass

et al. 2020

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Turfgrasses constitute a vital part of the landscape ecological systems for sports fields, golf courses, home lawns and parks. However, turfgrass species are affected by numerous abiotic stresses include salinity, heat, cold, drought, waterlogging and heavy metals and biotic stresses such as diseases and pests. Harsh environmental conditions may result in growth inhibition, damage in cell structure and metabolic dysfunction. Hence, to survive the capricious environment, turfgrass species have evolved various adaptive strategies. For example, they can expel phytotoxic matters; increase activities of stress response related enzymes and regulate expression of the genes. Simultaneously, some phytohormones and signal molecules can be exploited to improve the stress tolerance in turfgrass. Generally, the mechanisms of the adaptive strategies are integrated but not necessarily the same. Recently, metabolomic, proteomic and transcriptomic analyses have revealed plenty of stress response related metabolites, proteins and genes in turfgrass. Therefore, the regulation mechanism of turfgrass’s response to abiotic and biotic stresses was further understood. However, the specific or broad-spectrum related genes that may improve stress tolerance remain to be further identified. Understanding stress response in turfgrass species will contribute to improve stress tolerance of turfgrass.

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Persistence, recovery and root traits of tall fescue genotypes with different flowering date under prolonged water stress

Cited by 20 publications

References 32 publications

Amelioration of high temperature stress by exogenously applied salicylic acid: Genotype‐specific response of physiological traits

Amelioration of high temperature stress by exogenously applied salicylic acid: Genotype‐specific response of physiological traits

Genotypic‐specific responses caused by prolonged drought stress in smooth bromegrass (Bromus inermis): Interactions with mating systems

Mechanisms of Environmental Stress Tolerance in Turfgrass

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