In Vitro Adaptation for Drought and Cold Hardiness in Wheat

Galiba, Gábor

doi:10.1002/9780470650493.ch5

Cited by 21 publications

(10 citation statements)

References 214 publications

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“…In tolerant genotypes, sucrose translocated to the stem was initially metabolized to monosaccharides, causing their sucrose content to rise. Thus, the present results support the theory that lower sucrose allows an increase in quantities of reducing sugars (Leprince et al 1993;Galiba 1994). In conclusion, the genotypes investigated here responded to cold in a similar way and increased their cold hardiness by increasing their TSS, reducing sugars and sucrose contents significantly in the CA stage.…”

Section: Soluble Sugarssupporting

confidence: 89%

Cold hardiness of olive (Olea europaeaL.) cultivars in cold-acclimated and non-acclimated stages: seasonal alteration of soluble sugars and phospholipids

2009

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SUMMARYIn many plant species, several physiological and biochemical changes occur during low-temperature-induced cold acclimation. A previous study with olive cultivars (Cansevet al.2009) demonstrated a correlation between the level of accumulation of certain leaf proteins besides antioxidative enzyme activities and cold hardiness of the cultivars. The present paper analysed soluble sugar (SS) and phospholipid (PL) contents of cold-acclimated (CA) and non-acclimated (NA) leaf tissues in order to explain the mechanism of cultivar-dependent response to cold in olive. In general, cold acclimation significantly increased total soluble sugar (TSS), reducing sugars and sucrose contents of all cultivars to various extents depending on the cold hardiness of cultivars. In addition, TSS, reducing sugars and sucrose contents in cold-tolerant cultivars were significantly increased, whereas TSS, reducing sugars and sucrose contents in cold-sensitive cultivars either did not change or increased slightly in CA stage compared with those in NA stage. Even though reducing sugars were the major soluble sugar in olive leaves, levels of sucrose accumulations in CA stage compared with those in NA stage were greater than those observed in reducing sugars accumulation. Changes in levels of total PL, as well as the three individual PL fractions phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylinositol (PI), were investigated in olive leaf tissues. Significant increases in levels of PC and PE fractions during CA compared with those in NA stage suggested that PC and PE maintained the cold hardiness of olive cultivars more effectively than did PI. Although the precise mechanisms by which olive responds to cold may still be open to discussion, soluble sugars and PL are clearly important in the ability of olive cultivars to stand against cold stress.

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Section: Soluble Sugarssupporting

confidence: 89%

Cold hardiness of olive (Olea europaeaL.) cultivars in cold-acclimated and non-acclimated stages: seasonal alteration of soluble sugars and phospholipids

2009

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“…Winter wheat with high level of proline has greater tolerance in chilling stress (Doerffling et al, 1993). In addition Galiba (1994) reported direct correlation between proline level and chilling tolerance in various species. The present results showed that the greatest level of obtained proline was in third and second day after treatment in 'Licord' and 'RGS', respectively.…”

Section: Discussionmentioning

confidence: 97%

Impact of Foliar Application with Salicylic Acid on Biochemical Characters of Canola Plants under Cold Stress Condition

2016

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In this study the effect of foliar application of salicylic acid on the chlorophyll content, antioxidant enzymes activity, and the content of solute protein and proline were investigated in two canola varieties (Brassica napus L., cv ‘RGS’ and ‘Licord’) leaves during 0, 24, and 48 hours after salicylic acid treatment. The results showed that the content of total chlorophyll was decreased in ‘RGS’ cultivar during the experiment and this process was related with increasing of salicylic acid concentration. The activity of superoxide dismutase, peroxidase, and also lipid peroxidation were increased significantly after 48 hours compared with the first day. The results of catalase activity showed that, this trait was decreased 24 hours after salicylic acid treatment and this decrease was related with salicylic concentration. The content of protein in both cultivars slightly changed and plants treated with salicylic acid had more protein content, by contrast proline was greatly affected by salicylic acid treatment and its content was the highest 24 hours after treatment. According to the present findings the application of salicylic acid has useful effects on the biochemical traits of Brassica napus cultivars. Therefore it may be effective for the improvement of plant growth in cold regions.

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“…The temperature decreases with increase in altitude which makes unfavorable environmental conditions. Many researchers clearly reported that besides other solutes, the level of proline significantly increased during cold hardening [19].…”

Section: Discussionmentioning

confidence: 99%

Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens

Rahman

Hart

Afzal

et al. 2019

Plants

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Plants have evolved several metabolic pathways as a response to environmental stressors such as low temperatures. In this perspective, it is paramount to highlight physiological mechanisms of plant responses to altitudinal gradients as a proxy to evaluate changing environments. Here, we aimed to determine the impact of elevation on the physiological attributes of two plant species along an altitudinal gradient. Our hypothesis was that the altitudinal gradient influences proline, protein, and sugar contents, as well as abscisic acid (ABA) and indole acetic acid (IAA) concentrations. We studied these physiological components in leaves collected from four different altitudinal ranges in Himalayan region of Pakistan from two native herbs, namely Bistorta affinis and Sibbaldia procumbens. Leaves were collected at the initial blooming phase from each altitudinal range, viz. 2850 m, 3250 m, 3750 m and 4250 m. We observed that most abiotic factors decrease with altitude which induces cold acclimation. A significant increase in the concentration of physiological components was observed as altitude increased, except for IAA, which decreased. Furthermore, we did not find variations in proline, ABA and IAA concentrations between species; only sugar and protein, with higher values for B. affinis. We conclude that altitudinal gradients significantly affect the physiological components of B. affinis and S. procumbens in Himalayan region. This result contributes to the understanding of how plants adapt to environmental pressures, acting as a proxy for the evaluation of impacts caused by climate changes.

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In Vitro Adaptation for Drought and Cold Hardiness in Wheat

Cited by 21 publications

References 214 publications

Cold hardiness of olive (Olea europaeaL.) cultivars in cold-acclimated and non-acclimated stages: seasonal alteration of soluble sugars and phospholipids

Cold hardiness of olive (Olea europaeaL.) cultivars in cold-acclimated and non-acclimated stages: seasonal alteration of soluble sugars and phospholipids

Impact of Foliar Application with Salicylic Acid on Biochemical Characters of Canola Plants under Cold Stress Condition

Ecophysiological Plasticity and Cold Stress Adaptation in Himalayan Alpine Herbs: Bistorta affinis and Sibbaldia procumbens

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