QTL for relative water content in field-grown barley and their stability across Mediterranean environments

Teulat, Béatrice; Zoumarou-Wallis, N.; Rotter, B. A.; Salem, M. Ben; Bahri, Hakima; This, Dominique

doi:10.1007/s00122-003-1417-7

Cited by 191 publications

(149 citation statements)

References 35 publications

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“…Leaf RWC is a good indicator of plant water-status and even is a relevant screening tool for droughttolerance (Teulat et al, 2003). In the present research, RWC has been reduced significantly in water deficit stressed-untreated dragonhead plants (Table 1, 2).…”

Section: Foliar Application Of Tio 2 Np Under Water-deficit Stresssupporting

confidence: 49%

Effects of TiO2 nanoparticles and water-deficit stress on morpho-physiological characteristics of dragonhead (Dracocephalum moldavica L.) plants

Mohammadi

Esmailpour

Gheranpaye

2016

AAS

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Water-deficit stress is the most important environmental factors limiting plant growth, and production. Nano-titanium dioxide (nano anataseTiO 2 ) can have various profound effects on the crop physiological, biochemical and morphological characteristics. In the present research, the influences of different concentrations ofTiO 2 nanoparticles (NPs) (0, 10 and 40 ppm) and water-deficit stress on Dragonhead (Dracocephalum moldavica L.) were investigated in a factorial experiment based on randomized complete block design with three replications. Results showed that under normal irrigation, foliar application of 10 ppm TiO 2 NPs increased plant shoot dry mass and essential oils content. Under water-deficit stress condition, plants treated with 10 ppm TiO 2 NPs had more proline and much less H 2 O 2 and malondialdehyde content as compared to untreated plants. Therefore, it can be concluded that proper concentration of TiO 2 NPs probably can be used as an exogenous stimuli for improvement of shoot growth and essential oil content in plants. Furthermore, water-deficit stress-induced damages such as oxidative stress and membrane damage can be ameliorated by foliar application of TiO 2 NPs at appropriate concentrations. Sušni stres je eden izmed najpomembnejših okoljskih dejavnikov, ki omejujejo rast in produktivnost rastlin. Uporaba nano delcev titanovega dioksida (TiO 2 nano anataza) ima lahko velike učinke na fiziološke, biokemične in morfološke lastnosti gojenih rastlin. V tej raziskavi je bil v naključnem faktorskem bločnem poskusu preučevan vpliv različnih koncentracij nano delcev TiO 2 (0, 10 in 40 ppm) in sušnega stresa na moldavsko kačjeglavko (Dracocephalum moldavica L.) v treh ponovitvah. Rezultati so pokazali, da sta se suha masa in vsebnost eteričnih olj povečali pri normalnem namakanju in listnem dodajanju 10 ppm TiO 2 nano delcev. V razmerah sušnega stresa so vsebovale rastline, ki so bile tretirane z 10 ppm TiO 2 več prolina in mnogo manj H 2 O 2 in malonildialdehida v primerjavi z netretiranimi rastlinami. Na osnovi tega bi lahko zaključili, da bi z uporabo primerne koncentracije nano delcev TiO 2 kot zunanjega stimulanta, lahko izboljšali rast poganjkov in vsebnost eteričnih olj pri tej rastlini. Poškodbe kot sta oksidativni stres in poškodovanost membran, ki nastanejo zaradi sušnega stresa, bi lahko ublažili s foliarno aplikacijo primerne koncentracije nanodelcev TiO 2 .

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Section: Foliar Application Of Tio 2 Np Under Water-deficit Stresssupporting

confidence: 49%

Effects of TiO2 nanoparticles and water-deficit stress on morpho-physiological characteristics of dragonhead (Dracocephalum moldavica L.) plants

Mohammadi

Esmailpour

Gheranpaye

2016

AAS

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“…In cereals, RWC is a relevant attribute for screening drought tolerance (Teulat et al 2003). ABA priming ameliorated the drought induced decrease in RWC of both cultivars.…”

Section: Resultsmentioning

confidence: 99%

Role of abscisic acid and drought stress on the activities of antioxidant enzymes in wheat

Bano¹,

Ullah²,

Nosheen³

2012

Plant Soil Environ.

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The effect of drought stress and abscisic acid (ABA) applied at tillering stage (55 days after sowing) was compared in 2 wheat cultivars differing in drought tolerance. The activities of superoxide dismutase (SOD) and peroxidase (POD) and contents of endogenous ABA in plants were measured at 3 days of drought stress in cv. Chakwal-97 (drought tolerant) and cv. Punjab-96 (drought susceptible). ABA was applied at 10 -6 mol/L as presowing seed treatment for 18 h. Drought tolerant cultivar has a more efficient mechanism to scavenge reactive oxygen species as shown by a significant increase in the activity of antioxidant enzyme SOD. Under drought stress, ABA significantly increased the activities of SOD and POD, showing a significant decline on rewatering. The relative water content was significantly increased by ABA priming under drought stress in both wheat cultivars. The sensitive cultivar exhibiting lower endogenous ABA content was more responsive to ABA priming. On rewatering, the magnitude of recovery from drought stress was greater in tolerant cultivar. ABA was highly effective in improving grain weight of tolerant cultivar under drought stress.

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“…The product of dhn5 (which maps within the same cluster as dhn4/7) has been shown to be more highly expressed in cold tolerant entries (Ping et al 2000;Zhu et al 2000;Kosová et al 2008). Several overlapping QTL have also been identified which underlie variation in traits related to water status and drought tolerance (Teulat et al 2003). The co-localisation of such QTL with the dhn genes suggests a role for these genes in controlling the plant water status when challenged with drought (Campbell & Close 1997;Cattivelli et al 2002).…”

Section: Discussionmentioning

confidence: 99%

Allelic variations at Dhn4 and Dhn7 are associated with frost tolerance in barley

Holková¹,

Mikulková²,

Hrstková³

et al. 2010

CZECH J GENET PLANT

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Abstract:The sequences of the closely linked barley dehydrin genes dhn4 and dhn7 are both known to vary allelically. Here we associated allelic constitution at dhn4/7 with frost sensitivity across a panel of 30 diverse barley varieties. The combined presence of a 6 bp insertion in exon1 of dhn4 and a 30 bp deletion in exon1 of dhn7 was restricted to six-rowed winter and intermediate varieties characterised by relatively higher frost tolerance (12 genotypes; LT 50 from -14.2°C to -15.6°C). The alternative combination was present with one exception (sixrowed winter variety Alissa) only in spring and two-rowed winter varieties (17 genotypes; LT 50 from -10.0°C to -14.3°C). The genetic linkage between dhn4 and dhn7 identified e.g. in Dictoo and Morex varieties was verified by segregation analysis of F 2 plants from a cross between two genotypes carrying different allelic combination of dhn4 and dhn7 genes (two-rowed spring variety Akcent × six-rowed winter variety Okal). The potential of the former allelic combination as a marker for enhanced frost tolerance was tested in a sample of F 5 derivatives of a cross between the two-rowed winter type variety Monaco (Akcent allele combination) and the six-rowed winter type variety Okal. Plants with the Okal allele combination showed significantly higher frost tolerance than those with the alternative growth habit. The effect of ear type on frost tolerance was insignificant.

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QTL for relative water content in field-grown barley and their stability across Mediterranean environments

Cited by 191 publications

References 35 publications

Effects of TiO2 nanoparticles and water-deficit stress on morpho-physiological characteristics of dragonhead (Dracocephalum moldavica L.) plants

Effects of TiO2 nanoparticles and water-deficit stress on morpho-physiological characteristics of dragonhead (Dracocephalum moldavica L.) plants

Role of abscisic acid and drought stress on the activities of antioxidant enzymes in wheat

Allelic variations at Dhn4 and Dhn7 are associated with frost tolerance in barley

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