Effects of 24‐epibrassinolide application on cool‐season turfgrass growth and quality under salt stress

Mutlu, Songül Sever; Atesoglu, Hakan; Selim, Ceren; Tokgöz, Serkan

doi:10.1111/grs.12145

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…Additionally, application of exogenous polyamines such as spermidine could improve salt stress tolerance in Kentucky bluegrass and zoysiagrass [25,31]. Some hormones such as epibrassinolide, salicylic acid and glycinebetaine could enhance the salt tolerance of weeping alkaligrass (Puccinellia distans) tall fescue, perennial ryegrass and Kentucky bluegrass [38][39][40][41][42]. Ethylene is a negative regulating hormone in the plant stress response pathway, and its suppression can protect perennial ryegrass against salt stress [43].…”

Section: Salt Stressmentioning

confidence: 99%

“…To improve the stress tolerance of turfgrass, several methods were exploited. Generally, there are two main strategies: the application of molecules such as phytohormones, signal molecules, and other chemical compounds, or the improvement of the matrix with composts [8,41,69]. Relatively efficient and available exogenous molecules have not been reported yet.…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

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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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Section: Salt Stressmentioning

confidence: 99%

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Mechanisms of Environmental Stress Tolerance in Turfgrass

et al. 2020

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“…Moreover, the root biomass was significantly increased under 50 and 100 mM NaCl treatments (Figure 1B,C). Differently, it has been reported that the growth of many glycophytes, especially traditional crops and turfgrasses in Poaceae such as wheat, rice, ryegrass and tall fescue, are inhibited by NaCl treatments lower than 100 mM [43][44][45]. Furthermore, although the leaf relative membrane permeability of buffalograss was significantly increased under the 200 mM NaCl treatment, the tissue biomass and tiller number were maintained at the same levels as those under the control condition (Figure 1), suggesting that buffalograss possesses a strong salt tolerance.…”

Section: Buffalograss Maintains High Photosynthetic Capacity Under Mo...mentioning

confidence: 96%

Photosynthesis, Water Status and K+/Na+ Homeostasis of Buchoe dactyloides Responding to Salinity

Guo,

Cui,

et al. 2023

Plants

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Soil salinization is one of the most serious abiotic stresses restricting plant growth. Buffalograss is a C4 perennial turfgrass and forage with an excellent resistance to harsh environments. To clarify the adaptative mechanisms of buffalograss in response to salinity, we investigated the effects of NaCl treatments on photosynthesis, water status and K+/Na+ homeostasis of this species, then analyzed the expression of key genes involved in these processes using the qRT-PCR method. The results showed that NaCl treatments up to 200 mM had no obvious effects on plant growth, photosynthesis and leaf hydrate status, and even substantially stimulated root activity. Furthermore, buffalograss could retain a large amount of Na+ in roots to restrict Na+ overaccumulation in shoots, and increase leaf K+ concentration to maintain a high K+/Na+ ratio under NaCl stresses. After 50 and 200 mM NaCl treatments, the expressions of several genes related to chlorophyll synthesis, photosynthetic electron transport and CO2 assimilation, as well as aquaporin genes (BdPIPs and BdTIPs) were upregulated. Notably, under NaCl treatments, the increased expression of BdSOS1, BdHKT1 and BdNHX1 in roots might have helped Na+ exclusion by root tips, retrieval from xylem sap and accumulation in root cells, respectively; the upregulation of BdHAK5 and BdSKOR in roots likely enhanced K+ uptake and long-distance transport from roots to shoots, respectively. This work finds that buffalograss possesses a strong ability to sustain high photosynthetic capacity, water balance and leaf K+/Na+ homeostasis under salt stress, and lays a foundation for elucidating the molecular mechanism underlying the salt tolerance of buffalograss.

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“…Considerable efforts have been made to enhance plant salt tolerance, including the use of signaling molecules as hydrogen peroxide (H2O2) (Gondim et al, 2012), abscisic acid (Li et al, 2010), compounds that release nitric oxide (NO) (Gadelha et al, 2017), polyamines (Kamiab et al, 2014), brassinosteroids (Sever Mutlu et al, 2017) and selenium (Jiang et al, 2017). These molecules were tested in order to evaluate their potential to mitigate the deleterious effects of salt stress in several crop species.…”

Section: Introductionmentioning

confidence: 99%

Effects of Exogenous Selenium Application on the Growth of Sensitive and Tolerant Sorghum Plants Under Salt Stress

Gadelha¹,

Freitas²,

Paula³

et al. 2017

Anais Do IV Inovagri International Meeting - 2017

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Sorghum (Sorghum bicolor) is an important species for semiarid regions, such as Brazilian Northeast, where soil salinization and water quality is becoming a striking problem.Several research centers have evaluated the role of different compounds capable to induce changes in plant metabolism and improve salt tolerance. For some abiotic stress, selenium (Se) emerges as an alternative to activate plant defense responses; however, its involvement in tolerance to salt stress remain poorly understood. Thus, this work aimed to evaluate the effects of exogenous selenium application on the growth of sorghum plants under salt stress. Sorghum plants from CSF 20 (salt-tolerant) and CSF 18 (salt-sensitive) genotypes were grown in nutrient solutions containing sodium selenite (Na2SeO3) at 0 (control), 2, 4, 8 and 16 μM, and subjected to 75 mM NaCl-stress. The analyses were done after ten days of saline treatments. Overall, the benefits effects of Se were observed only in sorghum plants from salt-sensitive genotype, whereas no expressive modulation was registered in the salt tolerant one. Although leaf area and root dry mass were severely decreased by salt stress, the salt negative effects were almost completely abolished by 16 μM-Se supply in salt-sensitive genotype; nonetheless, the same responses were not observed for dry mass of leaves. In conclusion, selenium supply may constitute a strategy to overcome salt damage in S. bicolor growth depending on dose and plant genotype. Diversos centros de pesquisa têm avaliado o papel de diferentes compostos na indução de alterações no metabolismo das plantas e na melhora da tolerância ao estresse salino. Para alguns estresses abióticos, o selênio (Se) surge como uma alternativa que induz respostas de defesa de plantas, no entanto seu envolvimento na tolerância de plantas ao estresse salino permanece pobremente compreendido. Assim, este trabalho teve como objetivo avaliar os efeitos da aplicação exógena de Se no crescimento de plantas de sorgo sob estresse salino. Plantas de sorgo dos genótipos CSF 20 (tolerante a sal) e CSF 18 (sensível a sal) foram cultivadas em soluções nutritivas contendo selenito de sódio (Na2SeO3) a 0 (controle), 2, 4, 8 e 16 μM e submetidas a estresse salino com NaCl a 75 mM. As análises foram feitas após dez dias dos tratamentos salinos. Em geral, os efeitos benéficos do Se foram observados apenas em plantas de sorgo do genótipo sensível ao sal, enquanto que nenhuma modulação expressiva foi registrada no tolerante. Embora a área foliar e a massa seca da raiz tenham sido severamente diminuídas pelo estresse salino, os efeitos negativos do sal foram quase completamente eliminados pelo fornecimento de Se a 16 μM no genótipo sensível. Contudo, as mesmas respostas não foram observadas para massa seca de folhas. Desta forma, o fornecimento de selênio pode constituir uma estratégia para superar os danos causados pelo estresse salino no crescimento de S. bicolor, porém seus efeitos são dependentes da dose e do genótipo da planta. KEYWORDS:

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Effects of 24‐epibrassinolide application on cool‐season turfgrass growth and quality under salt stress

Cited by 5 publications

References 18 publications

Mechanisms of Environmental Stress Tolerance in Turfgrass

Mechanisms of Environmental Stress Tolerance in Turfgrass

Photosynthesis, Water Status and K+/Na+ Homeostasis of Buchoe dactyloides Responding to Salinity

Effects of Exogenous Selenium Application on the Growth of Sensitive and Tolerant Sorghum Plants Under Salt Stress

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