Susceptibility to low‐temperature photoinhibition and the acquisition of freezing tolerance in winter and spring wheat: The role of growth temperature and irradiance

Pocock, Tessa; Hurry, Vaughan; Savitch, Leonid V.; Hüner, Norman P. A.

doi:10.1034/j.1399-3054.2001.1130408.x

Cited by 46 publications

(43 citation statements)

References 26 publications

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“…Wheat species and cultivars differ in anatomical, morphological, physiological, and biochemical characteristics [15][16][17]. Little is known about the ability of wheat plants to synthesize phenolic compounds.…”

Section: Formation Of Phenolic Compounds In Various Cultivars Of Wheat (mentioning

confidence: 99%

Formation of phenolic compounds in various cultivars of wheat (Triticum aestivum L.)

Загоскина

Olenichenko

Yun’vei

et al. 2005

Appl Biochem Microbiol

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The ability to synthesize various secondary metabolites is a specific feature of higher plants. The most common secondary metabolites are phenolic compounds or polyphenols formed practically in all plant cells [1,2]. Increasing interest in these substances is due to their use as capillary-protecting, cholagogue, antitumor, and other drugs [3][4][5].Phenolic compounds differ considerably in composition and chemical activity. They include phenylpropanoids (hydroxycinnamic and hydroxybenzoic acids) and flavonoids (flavones, flavonols, anthocyans, etc.) that are present in the form of monomeric, oligomeric, and polymeric compounds in plants [1,2]. The number of known phenolic compounds (more than 9000) continuously increases [2].Phenolic compounds are produced practically in all plant cells. Accumulation of these compounds depends on the species and organ of plants and the phase of plant development. For example, woody plants synthesize a greater amount of phenolic compounds than herbaceous plants [6]. It should be emphasized that the intensity of metabolic processes is the highest in growing organs, particularly in leaves [2,7]. Phenolic compounds are strongly accumulated in both young and old tissues [1,2,8]. This type of distribution is related not only to biosynthesis, but also to catabolism of compounds [2,8].Considerable progress was made in studying the chemical composition and metabolism of phenolic compounds. However, the functions of these compounds in plants are poorly known. Previous studies have shown that several phenolic compounds are involved in the regulation of photosynthesis and respiration. They serve as components of electron transport chains in mitochondria and chloroplasts and uncouple oxidative phosphorylation [2]. Much recent attention was paid to salicylic acid, which acts as a signal molecule in plants [2,9]. Phenolic compounds protect plants from a variety of stress factors, including pathogens, UV irradiation, and heavy metals [10,11]. The protective effect of phenolic compounds is associated with their ability to prevent or decrease the severity of oxidative stress accompanying the influence of adverse factors [12]. It should be noted that the ability of plant cells to synthesize phenolic compounds indirectly reflects their resistance to stress [13]. Therefore, study of the ability of plant tissues to synthesize phenolic compounds is of considerable importance.Much attention is given to wheat as one of the most important cereal food crops cultivated in the five contiAbstract -The formation of soluble phenolic compounds, including flavonols, was studied in winter ( Erythrospermum , Lutescens 230, and spring cultivars (Lada) of wheat ( Triticum aestivum L.). The contents of soluble phenolic compounds and flavonols were 1.8-2.6 and 0.5-1.3 mg/g fresh weight, respectively. These results illustrate the similarity of phenol metabolism in leaves of winter and spring wheat cultivars. The exception was the cultivar R 47-28 that accumulated the maximum amount of phenolic compounds (e.g., flavono...

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Section: Formation Of Phenolic Compounds In Various Cultivars Of Wheat (mentioning

confidence: 99%

Formation of phenolic compounds in various cultivars of wheat (Triticum aestivum L.)

Загоскина

Olenichenko

Yun’vei

et al. 2005

Appl Biochem Microbiol

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“…This process leads to global reprogramming of photosynthetic carbon metabolism (Gray and Heath, 2005). The cold acclimationinduced stimulation in photosynthetic capacity is correlated positively with the development of freezing tolerance, as well as with an increased resistance to low temperature-induced photoinhibition in winter rye and winter wheat (Gray et al, 1996;Pocock et al, 2001). Most likely, the photosynthetic carbon metabolism-related acclimation process is also linked, at least partly, to the CBF regulon.…”

Section: Changes During Prolonged Cold Acclimationmentioning

confidence: 99%

Key molecular and metabolic processes used for genetic engineering to improve freezing tolerance in cereals.

Soltész¹,

Harwood²,

Kalapos³

et al. 2016

Biotechnology of Major Cereals

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Genetic Engineering to Improve Freezing Tolerance in Cereals 195stomata closure, which is regulated by abscisic acid (ABA). It is well documented that ABA content increases transiently in the early stage of cold stress response (Galiba et al., 1993). An increased level of ABA was found to coincide with the downregulation of other stress hormones, salicylic acid and jasmonic acid during an early phase of wheat response to cold stress (Kosová et al., 2012). The interaction among plant hormones is reviewed elsewhere . CBF transcription factorsAfter exposure to low temperature, in parallel with the enhanced ABA level, the transcriptome of those plants capable of cold acclimation undergoes a complete reorganization, as revealed by the up-or downregulation of thousands of genes (Greenup et al., 2011;Laudencia-Chingcuanco et al., 2011). As estimated in Arabidopsis, more than 200 transcription factors are involved in the reconfiguration, and may serve as regulators for acclimation (Thomashow, 2010). The best understood cold regulatory pathway is the CBF regulon controlled by the C-repeat binding factors (CBFs), also called dehydration-responsive element binding (DREB1) factors (Thomashow, 2010;Mizoi et al., 2012). The CBFs belong to the AP2/EREBP (APETALA2/ethylene-responsive element binding protein) transcription factor family and possess a plant-specific AP2 DNA binding domain that interacts with the C-repeat elements present in the promoter region of their target genes (Jaglo et al., 2001). CBF expression is induced by different abiotic stresses (cold, drought, salt). The function of CBF genes has been revealed in many plant species. In Arabidopsis, six CBFs have been identified, while in the economically important cereals, the number of CBFs are much higher: 20 in barley (Hordeum vulgare L.) (Skinner et al., 2005), 13 in einkorn (Triticum monococcum) (Miller et al., 2006) and 37 in common wheat (Triticum aestivum L.) (Badawi et al., 2007). CBF genes are positioned in clusters on the homeologous group 5 chromosomes of the Triticeae and coincide with the FR-2 quantitative trait locus (QTL) for freezing tolerance (Vágújfalvi et al., 2003(Vágújfalvi et al., , 2005Miller et al., 2006;Tondelli et al., 2006;Båga et al., 2007;Francia et al., 2007). CBFs in Triticeae are regulated in a complex way, influenced by genotype, induction-temperature and lightregulated factors (Campoli et al., 2009). Analysis of 201 rye (Secale cereale L.) genotypes showed that single nucleotide polymorphisms (SNPs) in ScCBF15 and ScCBF12 genes were significantly associated with frost tolerance (Li et al., 2011). An einkorn mapping population was generated (Miller et al., 2006) and subjected to frost tests (Knox et al., 2008) and it was shown that three CBF genes (TmCBF12, TmCBF14 and TmCBF15) were responsible for the increased frost tolerance, and this improvement was related to higher expression levels of COR14b and DHN5 genes (Knox et al., 2008). In hexaploid wheat, three CBF genes: TaCBF14, TaCBF15 and TaCBF16 were also induced by cold treatm...

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“…Among these factors is below-zero temperature; the effect of this factor is frequently studied on winter cereals, wheat in particular [3,4]. Plant capability for adaptation to low temperatures during their overwintering is provided by diverse physiological and biochemical mechanisms, many of which are well studied at present.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Cold Acclimation of Winter Wheat Plants on Changes in CO2 Exchange and Phenolic Compound Formation

Загоскина

Olenichenko

Klimov

et al. 2005

Russ J Plant Physiol

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We studied CO 2 exchange and phenolic compound production in various organs of unhardened and hardened winter wheat ( Triticum aestivum L.) plants. The rates of CO 2 assimilation at saturating illumination (photosynthesis) and CO 2 evolution in darkness (respiration) declined substantially at the autumnal decrease of ambient temperature. However, because of a higher cold resistance of photosynthesis, the ratio of photosynthesis to respiration rates increased 1.5-fold. These gas exchange changes were accompanied by the accumulation of total soluble phenolics in leaves and a polymeric phenolic compound lignin in roots. We did not observe any changes in the production of either soluble or polymeric (lignin) phenolics in crowns.

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Susceptibility to low‐temperature photoinhibition and the acquisition of freezing tolerance in winter and spring wheat: The role of growth temperature and irradiance

Cited by 46 publications

References 26 publications

Formation of phenolic compounds in various cultivars of wheat (Triticum aestivum L.)

Formation of phenolic compounds in various cultivars of wheat (Triticum aestivum L.)

Key molecular and metabolic processes used for genetic engineering to improve freezing tolerance in cereals.

The Effects of Cold Acclimation of Winter Wheat Plants on Changes in CO2 Exchange and Phenolic Compound Formation

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