Genetic analysis of plant water status and osmotic adjustment in recombinant inbred lines of sunflower under two water treatments

Kiani, S. Poormohammad; Talia, Paola; Maury, Pierre; Grieu, Philippe; Heinz, Ruth Amelia; Perrault, A.; Nishinakamasu, Verónica; Hopp, H. Esteban; Gentzbittel, Laurent; Paniego, Norma; Sarrafi, A.

doi:10.1016/j.plantsci.2006.12.007

Cited by 128 publications

(77 citation statements)

References 49 publications

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“…Amino acids, as an important osmotic substance, play a vital role in maintaining the cell turgor pressure and in the reduction of tissue dehydration [46,47]. In this paper, moderate drought stress significantly increased the accumulation of total free amino acids ( Figure 4E,F), which contributed to reduce the cell osmotic potential and maintain cell turgor pressure.…”

Section: Drought Disturbed the Nitrogen Metabolism Processmentioning

confidence: 53%

Alleviation of Drought Stress by Nitrogen Application in Brassica campestris ssp. Chinensis L.

et al. 2018

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Abstract:To assess the influence of drought stress on the growth and nitrogen nutrition status of pakchoi (Brassica campestris ssp. Chinensis L.) at different nitrogen (N) levels, the changes in N accumulation and enzyme activities involved in N assimilation were investigated. The drought was induced by adding polyethylene glycol (PEG) under hydroponic culture conditions. Pakchoi seedlings were exposed to a modified nutrient solution with different nitrogen concentration (N1, N2, and N3 represent 2, 9 and 18 mM NaNO 3 , respectively) and osmotic potential (W1, W2 and W3 represent 0, 60 and 120 g·L −1 PEG 6000) in a full factorial, replicated randomized block design. A short time (seven days) of drought stress caused a significant decline in plant water content, transpiration rate, shoot biomass and shoot nitrogen concentration. Increasing N availability considerably alleviate drought stress by increasing the content of total free amino acids in the roots, promoting the acceleration of root biomass accumulation, and improving the activities of nitrate reductase (NR; EC 1.7.1.1) and glutamine synthetase (GS; EC 6.3.1.2) which would reduce moisture limitations. The results suggested that pakchoi supplied with relative higher N had better growth performance under drought stress.

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Section: Drought Disturbed the Nitrogen Metabolism Processmentioning

confidence: 53%

Alleviation of Drought Stress by Nitrogen Application in Brassica campestris ssp. Chinensis L.

et al. 2018

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“…C71 and C146 are F9 recombinant inbred lines coming from the cross between PAC2 and RHA266 and was kindly provided by INRA, France (Poormohammad Kiani et al 2007). RHA266 (developed by USDA) is paternal line from the cross between Helianthus annuus and peredovik, whereas PAC2 (developed by INRA-France) is maternal line from the cross between H. petiolaris and HA61 (Poormohammad Kiani et al 2007). Seeds were surface sterilized in 2% NaOCl for 3 min, washed three times in sterile distilled water, and sown in 10×12 cm pots filled with sterilized soil (Table 2).…”

Section: Methodsmentioning

confidence: 99%

Changes in antioxidant systems in sunflower partial resistant and susceptible lines as affected by Sclerotinia sclerotiorum

Davar

Darvishzadeh

Majd³

2013

Biologia

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Sunflower, Helianthus annuus L., is a major oil-seed crop widely cultivated throughout the globe. White mold, caused by necrotrophic pathogen Sclerotinia sclerotiorum (Lib.) de Bary, is a common and widespread disease of sunflower. Changes in various physiological activities such as production of malondialdehyde (MDA) as the main end product of lipid peroxidation, enzymatic and non-enzymatic activities and proline content, were investigated in leaves and stems of sunflower lines either resistant or susceptible to S. sclerotiorum. The results showed accumulation of high amount of free proline in the leaves of the resistant line. S. sclerotiorum invasion resulted in increase in the MDA content in both lines compared to the controls. Superoxide dismutase, ascorbate peroxidase and guaiacol peroxidase activities significantly increased in the stem and leaves of inoculated lines. In the resistant line, Sclerotinia infection significantly induced catalase (CAT) activity both in the stem and leaves of contaminated plants. The activity of CAT was significantly decreased in susceptible line. Based on our results the activity of antioxidant enzymes was much pronounced in sunflower resistant line than in susceptible one. Studied lines showed distinctive activity considering different biochemical parameters, which may point to further directions in exploring host-pathogen interaction and lead to selection and production of new lines to achieve an improvement of plant adaptation to pathogen.

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“…It has been reported that drought stress inhibits cell division and expansion owing to reduced pressure potential leading to decreased plant growth. Relative water content (RWC) and water potential (ψ w ) and its components, pressure potential (ψ p ) and osmotic potential (ψ s ), are used as indicators of plant water status (Kiani et al 2007). During drought stress, plants follow important physiological mechanisms of maintaining pressure potential by means of increased cell solute concentration (so called osmotic adjustment, OA; Morgan 1984.…”

Section: Drought Induced Physiological and Biochemical Responsesmentioning

confidence: 99%

An insight into the drought stress induced alterations in plants

Thapa¹,

Dey²,

Sahoo³

et al. 2011

Biol. plant.

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Plants are subjected to several abiotic stresses that adversely affect growth, metabolism and yield. The dynamic research in plant genetics complemented by genome sequencing has opened up avenues to address multiple problems caused by abiotic stresses. Though many drought-induced genes have been phytoengineered in a wide range of plants, the drought signal transduction pathways, and the alteration of plant sensing and signaling systems to adverse environments still remain an intriguing subject for comprehensive investigation. To impart enhanced drought tolerance in plants, a thorough perception of physiological, biochemical and gene regulatory networks is essential. Recent functional genomics tools have facilitated the progress in our understanding of stress signaling and of the linked molecular regulatory networks. This has revealed several stress-inducible genes and various transcription and signaling factors that regulate the drought stress-inducible systems. Translational genomics of these drought specific genes using model plants have provided encouraging outcomes, but the in-depth knowledge of the specific roles of various metabolites in plant stress tolerance will lead to evolvement of strategies for the phytoengineering of drought tolerance in plants in future.

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Genetic analysis of plant water status and osmotic adjustment in recombinant inbred lines of sunflower under two water treatments

Cited by 128 publications

References 49 publications

Alleviation of Drought Stress by Nitrogen Application in Brassica campestris ssp. Chinensis L.

Alleviation of Drought Stress by Nitrogen Application in Brassica campestris ssp. Chinensis L.

Changes in antioxidant systems in sunflower partial resistant and susceptible lines as affected by Sclerotinia sclerotiorum

An insight into the drought stress induced alterations in plants

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