The Physiological and Biochemical Responses to Freezing Stress of Olive Plants Treated with Salicylic Acid

Hashempour, A.; Ghasemnezhad, M.; Ghazvini, Reza Fotouhi; Sohani, M. M.

doi:10.7868/s0015330314040095

Cited by 7 publications

(10 citation statements)

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“…7). It seemed that antioxidant property of phenolic compounds increased drought tolerance of A. aucheri as previously reported in barley (Saleh and Madany, 2015) and olive (Hashempour et al, 2014). …”

Section: Resultssupporting

confidence: 76%

The impact of salicylic acid on some physiological responses of Artemisia aucheri Boiss. under in vitro drought stress

Abbaspour

Ehsanpour

2016

AAS

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Salicylic acid (SA) is an important plant regulator which is involved in growth, development, and response to stress. This study was aimed to evaluate some physiological and biochemical responses of Artemisia aucheri Boiss. under drought stress after exogenous SA treatment. Experiment was performed in vitro. Polyethylene glycol (PEG/6000) with 0, 2 and 4 % (w/v) was used in MS medium to simulate drought stress and different concentrations of SA (0, 0.01 and 0.1mM) were added. After four weeks, SA alleviated the negative effects of PEG on dry and fresh mass as well as chlorophyll and carotenoid contents. Under drought stress, application of SA decreased storage polysaccharides and increased soluble carbohydrates respectively. Although PEG had no significant effect on flavonoid content, it increased significantly anthocyanin and total phenol content, total antioxidant capacity, PAL (phenylalanine ammonia-lyase) and TAL (tyrosine ammonia-lyase) activity and SA treatment improved these parameters significantly. According to the current data, it was concluded that SA increased drought tolerance of Artemisia aucheri by increasing biosynthesis of phenolic compounds, improvement of TAL and PAL activity as well as also by increased content of soluble carbohydrates.Key words: Artemisia aucheri Boiss., salicylic acid, drought stress; polyethylene glycol, growth, phenylalanine ammonia-lyase, tyrosine ammonia-lyase IZVLEČEK VPLIV SALICILNE KISLINE NA NEKATERE FIZIOLOŠKE ODZIVE VRSTE PELINA (Artemisia aucheri Boiss.) NA SUŠNI STRES V IN VITRO RAZMERAHSalicilna kislina je pomemben rastlinski hormon, ki je vključen v uravnavanje rasti, razvoja in odziva na stres. Cilj raziskave je bil ovrednotiti nekatere fiziološke in biokemične odzive vrste pelina Artemisia aucheri Boiss. v sušnem stresu po zunanjem dodajanju salicilne kisline. Poskus je potekal in vitro, v MS gojišču (Murashige and Skoog., 1962) z dodatkom polietilen glikola (PEG/6000, 0, 2 in 4 % (w/v)) za simulacijo sušnega stresa in dvema različnima koncentracijama salicilne kisline (SA) (0, 0.01 in 0.1 mM). Po štirih tednih je salicilna kislina zmanjšala negativne učinke polietilen glikola na suho in svežo maso kot tudi na vsebnosti klorofila in karotenoidov. V sušnem stresu je uporaba salicilne kisline zmanjšala vsebnost založnih polisaharidov in povečala vsebnost topnih ogljikovih hidratov. Čeprav polietilen glikol ni imel značilnega učinka na vsebnostn flavonoidov je značilno povečal vsebnost antocianinov, celokupnih fenolov, celokupno antioksidacijsko sposobnost, aktivnost PAL (fenilalanin amonium-liaza) in TAL (tirozin amonium-liaza), obravnavanje s salicilno kislino je te parametre značilno izboljšalo. Glede na te rezultate je bilo zaključeno, da salicilna kislina povečuje strpnost na sušo pri vrsti Artemisia aucheri s povečanjem biosinteze fenolnih snovi, z izboljšanjem aktivnosti TAL in PAL kot tudi s povečanjem vsebnosti topnih ogljikovih hidratov.

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Section: Resultssupporting

confidence: 76%

The impact of salicylic acid on some physiological responses of Artemisia aucheri Boiss. under in vitro drought stress

Abbaspour

Ehsanpour

2016

AAS

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“…Enhanced AA as a facilitator of frost tolerance was previously described in other plants: for example, elevated levels of ROS-scavenging activities in pine trees were found to be associated with increased freezing tolerance (Tao et al ., 1998). Another study suggested that treating olive plants with salicylic acid (SA) enhanced their freezing tolerance by increasing antioxidant enzymatic activities and total phenolic content (Hashempour et al ., 2014).…”

Section: Discussionmentioning

confidence: 99%

Comparative study of leaf antioxidant activity as a possible mechanism for frost tolerance in ‘Hass’ and ‘Ettinger’ avocado cultivars

et al. 2019

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A major drawback of avocado (Persea americanaMill.) is susceptibility to frosts, which reduces yields and limits its geographic distribution and market growth. Whereas the frost-susceptible cultivar ‘Hass’ leads the global avocado market, cv. ‘Ettinger’, although commercially less important, is considered frost-tolerant. The mechanism behind the greater frost tolerance of ‘Ettinger’ has not yet been elucidated; therefore, the aim of the current study was to evaluate the differences between the frost responses of the two cultivars. The results showed that detached ‘Ettinger’ branches had greater tolerance than ‘Hass’ to controlled frost stress. Tissue browning caused by methyl viologen oxidative cell damage, superoxide accumulation in leaf discs following wounding and browning of cut surfaces in branches were much lower in ‘Ettinger’ than in ‘Hass’, suggesting greater antioxidant activity (AA) in the former. In leaf extracts, AA was significantly higher in ‘Ettinger’ than in ‘Hass’, but osmolarity was similar in the two cultivars. Total phenolics content was significantly higher in ‘Ettinger’ but addition of a protein mask did not significantly reduce AA in either cultivar. Interestingly, following the freezing treatment, AA increased in ‘Ettinger’ and remained almost unchanged in ‘Hass’, while osmolarity was unaffected in either cultivar. These results suggest that the greater frost-tolerance of ‘Ettinger’ than ‘Hass’ is due largely to its greater AA, which springs mainly from a non-enzymatic source, i.e. accumulation of phenolic compounds. Based on the current study, future applications may be developed to minimize frost damage in avocado orchards.

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“…Changes in the activities of APX, CAT and POD in response to abiotic stresses have been reported in olive and other plant crops (52,17,12). Similarly, Cansev et al, (51) and Hashempour et al,(53) found high levels of the POD, SOD, APX and CAT activities in the olive in response to low-temperature stress relative to control conditions.…”

Section: Discussionmentioning

confidence: 74%

Effect of drought stress on physiological traits and antioxidant activities in some olive cultivars

Gholmohammadi

Sofalian

Taheri

et al. 2019

Cell Mol Biol (Noisy-le-grand)

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Drought is important abiotic stress that negatively influences the growth and development of plants. Strong efforts are currently ongoing worldwide to improve olive production under adverse environmental conditions by extending genetic diversity to improve key agro-physiological and biochemical features through various breeding programs. This research was performed to evaluate the effect of drought stress on the changes of some physiological and biochemical traits in 20 commercial and promising olive genotypes under field conditions during 2015-2017. Fruit oil content as well as some of physiological traits and antioxidant activities under control and drought stress conditions were evaluated. The results of combined analysis of variance (ANOVA) for fruit yield and other measured traits showed that year, irrigation treatments, genotype main effects and their interactions were highly significant. In general, fruit yield, relative water content (RWC), oil content and total soluble proteins (TPs) showed a decreasing trend, whereas the electrolyte leakage, H 2 O 2 content and activity of catalase (CAT), ascorbate peroxidase (APX) and peroxidase (POX) displayed an increasing trend in the tested olive genotypes during drought stress. A Principal component analysis (PCA)-based biplot demonstrated that stress tolerance index (STI) positively correlated with POX and TPs. Results also revealed a high level of genetic diversity in the tested olive genotypes, and among them, two commercial (Abou-satl) and promising genotypes (T2) responded better to drought by marinating a good balance for fruit yield and some of the antioxidant activities. These genotypes could be used in future programs to develop new olive cultivars with beneficial stress-adaptive traits.

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The Physiological and Biochemical Responses to Freezing Stress of Olive Plants Treated with Salicylic Acid

Cited by 7 publications

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The impact of salicylic acid on some physiological responses of Artemisia aucheri Boiss. under in vitro drought stress

The impact of salicylic acid on some physiological responses of Artemisia aucheri Boiss. under in vitro drought stress

Comparative study of leaf antioxidant activity as a possible mechanism for frost tolerance in ‘Hass’ and ‘Ettinger’ avocado cultivars

Effect of drought stress on physiological traits and antioxidant activities in some olive cultivars

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