Photosynthesis capacity and enzymatic defense system as bioindicators of salt tolerance in triticale genotypes

Rasouli, Fatemeh; Kiani‐Pouya, Ali

doi:10.1016/j.flora.2015.05.006

Cited by 8 publications

(6 citation statements)

References 41 publications

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“…In present study, MDA, the main product of membrane lipids peroxidation, showed increased levels under 100-300 mM NaCl range, a sign of overproduction of ROS, such as superoxide (O 2− ) and hydrogen peroxide (H 2 O 2 ) inducing lipid peroxidation. This is in agreement with the results of salinity stress on other plants species (Yıldıztugay et al 2011;Rasouli & Kiani-Pouya 2015). To limit the oxidative damage caused by ROS generation under salt stress, plants have developed an antioxidant defense system that includes enzymes and non-enzymatic antioxidants (Mittler 2002;Foyer & Noctor 2005).…”

Section: Discussionsupporting

confidence: 88%

Effect of NaCl stress on physiological, antioxidant enzymes and anatomical responses of Astragalus gombiformis

et al. 2017

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Section: Discussionsupporting

confidence: 88%

Effect of NaCl stress on physiological, antioxidant enzymes and anatomical responses of Astragalus gombiformis

et al. 2017

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“…and rye (Secale spp.) (Rasouli and Kiani-Pouya 2015) that offers high forage production and is an important potential protein source for animal feed (Samad and Karmoker 2013). Climate-resilient crops such as triticale are important for food production.…”

Section: Introductionmentioning

confidence: 99%

Effects of exogenous glucose and sucrose on photosynthesis in triticale seedlings under salt stress

Wang¹,

Li²,

Wei³

et al. 2019

Photosynt.

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Salinization disturbs metabolic processes of plants and results in reduced growth and productivity. In our study, the Dongnong 8809 variety of triticale (×Triticosecale Wittmack) was evaluated for its physiological responses to salt stress during the seedling stage. We evaluated biomass production, relative chlorophyll content, chlorophyll fluorescence, and leaf gas-exchange parameters. Our results indicated that salt stress greatly reduced matter accumulation, SPAD value, photosynthetic capacity. However, seedlings treated with exogenous sugars showed significantly enhanced matter accumulation, SPAD value, quantum yield of PSII, electron transport rate, net photosynthetic rate, decreased stomatal limitation value, and improved photosynthetic capacity compared to seedlings treated with salt stress alone. Exogenous glucose and sucrose can alleviate the inhibitory effect of salt stress on the growth of triticale, and of the two exogenous sugars, sucrose had a stronger alleviating effect than that of glucose under salt stress. rate; ETR -electron transport rate; F0 -minimal fluorescence yield of the dark-adapted state; F0' -minimal fluorescence yield of the light-adapted state; Fm -maximal fluorescence yield of the dark-adapted state; Fm' -maximal fluorescence yield of the light-adapted state; Fs -steady-state fluorescence yield; Fv/Fm -maximum quantum yield of PSII photochemistry; Fv/F0 -potential photochemical efficiency; gs -stomatal conductance; Ls -stomatal limitation value; NPQ -nonphotochemical quenching; PN -net photosynthetic rate; qP -photochemical quenching coefficient; WUEwater-use efficiency; WUEi -intrinsic water-use efficiency; Y -quantum yield of PSII.

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“…and ) in the cells that inhibited their activities . Similarly, Rasouli et al also studied the pattern of enzymatic antioxidant activity in three genotypes of triticale and concluded that some genotypes showed an extreme decline in enzyme activities while others were positively impacted by stress conditions. An increased induction level of antioxidant enzyme activities in plants as a mechanism of a stress‐adaptive trait has been reported in the literature; however, the impairment of enzyme activities due to different stresses have also been described and largely depends upon genotype and severity of the stress .…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, Rasouli et al also studied the pattern of enzymatic antioxidant activity in three genotypes of triticale and concluded that some genotypes showed an extreme decline in enzyme activities while others were positively impacted by stress conditions. An increased induction level of antioxidant enzyme activities in plants as a mechanism of a stress‐adaptive trait has been reported in the literature; however, the impairment of enzyme activities due to different stresses have also been described and largely depends upon genotype and severity of the stress . These results imply that cultivar XS 134 possesses an effective scavenging mechanism to remove ROS produced as a result of butachlor stress, as evidenced by the lower oxidative stress and higher activation of antioxidant enzymes (Tabs.…”

Section: Discussionmentioning

confidence: 99%

Butachlor‐Induced Alterations in Ultrastructure, Antioxidant, and Stress‐Responsive Gene Regulations in Rice Cultivars

Islam

Ali

Farooq

et al. 2017

CLEAN Soil Air Water

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Butachlor is an extensively applied herbicide in paddy fields. However, concerns have been raised about its potential adverse effects on the biochemical and physiological processes of non-target plants. In the present investigation, butachlor-induced toxic effects in two rice cultivars, Zhejing 88 (ZJ 88) and Xiushui 134 (XS 134), treated with different butachlor treatments were evaluated. A significant decrease in growth rate, pigment concentration, and chlorophyll fluorescence and alternations in chloroplast structures were observed in both rice cultivars at higher treatment levels. The malfunctioning of antioxidant enzymes, the higher uptake of butachlor, and the downregulation of the putative fatty acid elongase gene suggested severe oxidative damage, which was also indicated by enhanced reactive oxygen species (ROS) formation (H 2 O 2 , O À 2 ), lipid peroxidation, and electrolyte leakage and reduced total soluble protein levels in cultivar ZJ 88 than in cultivar XS 134. However, higher proline accumulation and pyrroline-5-carboxylate synthase and GABA-transaminase transcript levels in ZJ 88 suggested their ameliorative role under butachlor-induced oxidative stress in the sensitive cultivar. In contrast, the stimulated activation of antioxidant enzymes, glutathione, soluble sugars, and phenolics played a vital role in protection against butachlor stress in cultivar XS 134. Thus, butachlor-induced oxidative stress tolerance in the resistant cultivar (XS 134) is related to the enhanced activation of different isoforms of antioxidant enzymes and a reduced uptake of butachlor compared to the sensitive cultivar (ZJ 88). The present work provides valuable insights into butachlor-induced toxicity in rice plants.

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Photosynthesis capacity and enzymatic defense system as bioindicators of salt tolerance in triticale genotypes

Cited by 8 publications

References 41 publications

Effect of NaCl stress on physiological, antioxidant enzymes and anatomical responses of Astragalus gombiformis

Effect of NaCl stress on physiological, antioxidant enzymes and anatomical responses of Astragalus gombiformis

Effects of exogenous glucose and sucrose on photosynthesis in triticale seedlings under salt stress

Butachlor‐Induced Alterations in Ultrastructure, Antioxidant, and Stress‐Responsive Gene Regulations in Rice Cultivars

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