Thermal responses of Durum wheat Triticum durum to early water stress. Consequence on leaf and flower development

Rassaa, Neila; Salah, Halim Ben Haj; Latiri, Kaouther

doi:10.1016/j.crvi.2008.02.005

Cited by 9 publications

(9 citation statements)

References 14 publications

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“…Therefore, a lot of the controversy might actually result from the fact that studies were done under different conditions, e.g., in various developmental stages, tissues, and with different stress regimes. This might be linked with the fact that also the degree of drought tolerance strongly depends on developmental stage in most plant species ( Reddy et al, 2004 ; Rassaa et al, 2008 ).…”

Section: Jasmonates and Drought Stressmentioning

confidence: 99%

Exploring Jasmonates in the Hormonal Network of Drought and Salinity Responses

et al. 2015

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Present and future food security is a critical issue compounded by the consequences of climate change on agriculture. Stress perception and signal transduction in plants causes changes in gene or protein expression which lead to metabolic and physiological responses. Phytohormones play a central role in the integration of different upstream signals into different adaptive outputs such as changes in the activity of ion-channels, protein modifications, protein degradation, and gene expression. Phytohormone biosynthesis and signaling, and recently also phytohormone crosstalk have been investigated intensively, but the function of jasmonates under abiotic stress is still only partially understood. Although most aspects of jasmonate biosynthesis, crosstalk and signal transduction appear to be similar for biotic and abiotic stress, novel aspects have emerged that seem to be unique for the abiotic stress response. Here, we review the knowledge on the role of jasmonates under drought and salinity. The crosstalk of jasmonate biosynthesis and signal transduction pathways with those of abscisic acid (ABA) is particularly taken into account due to the well-established, central role of ABA under abiotic stress. Likewise, the accumulating evidence of crosstalk of jasmonate signaling with other phytohormones is considered as important element of an integrated phytohormonal response. Finally, protein post-translational modification, which can also occur without de novo transcription, is treated with respect to its implications for phytohormone biosynthesis, signaling and crosstalk. To breed climate-resilient crop varieties, integrated understanding of the molecular processes is required to modulate and tailor particular nodes of the network to positively affect stress tolerance.

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Section: Jasmonates and Drought Stressmentioning

confidence: 99%

Exploring Jasmonates in the Hormonal Network of Drought and Salinity Responses

et al. 2015

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“…Spikelet initiation ended when leaf-sheaths became erect, according to Baker and Gallagher [9], but in correspondence to the stage of first node detectable, according to Kirby et al [21]. Rassaa et al [22] reported that durum wheat plants had five to six leaves at the end of spikelet initiation when well irrigated, but only four to five when water stressed. Finally, George [7] found that, in wheat, culm elongation started at the beginning of spikelet differentiation.…”

Section: Introductionmentioning

confidence: 98%

Coordination between plant and apex development in Hordeum vulgare ssp. distichum

Arduini

Ercoli

Mariotti

et al. 2010

Comptes Rendus. Biologies

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Developmental scales for cereals describe apex and plant morphology separately. In order to link crucial steps of internal and external development, in three varieties of Hordeum vulgare spp. distichum L., sown in autumn and in spring, we recorded plant, leaf and apex stage, following the scales of Zadoks, Haun, and Banerjee and Wienhues, the number of primordia, culm and spike length, and the final number of leaves and spikelets. Primordia initiation was coordinated with leaf appearance and the relative rate was constant for the initiation of productive primordia. The maximum number of primordia was achieved just before the first node became detectable, but development was completed only by those initiated before floret differentiation and internode distension started. The first spikelet was initiated when the third leaf tip became visible, and the last one when plants were at the pseudo stem erection stage and five leaves had still to appear.

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“…It has most devastating effects on plant productivity and growth than any other environmental stresses (Lambers et al, 2008). Alterations in physiology, growth and development, in response to stress, change the life history of plants (Maggio et al, 2006;Rassaa et al, 2008). Drought severity is expected to be increased in the upcoming years because of changing climate scenarios (Walter et al, 2011;Handmer et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…A different school of thought exists to cope with drought situation that includes; cultivars selection, efficient irrigation systems, mulches and use of media having maximum water retention (Anjum et al, 2011). Drought tolerance ability varies even amongst the member of species (Rassaa et al, 2008, Younis et al, 2017 therefore; screening of the most drought resistant plants is a realistic approach for maximum water use efficiency under changing climatic situations (Reynolds, 2006). There is also the need of time to meet the future demand of xeriscaping and water conservation.…”

Section: Introductionmentioning

confidence: 99%

Screening of marigold (Tagetes erecta L.) cultivars for drought stress based on vegetative and physiological characteristics

Younis

Riaz

Qasim

et al. 2018

IJFAAS

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Drought tolerance is an important genotypic character to be exploited for the plant cultivar selection under water deficit conditions. In the recent study, we examined the response of two marigold cultivars (Inca and Bonanza) under different regimes of drought stress. The aim was to determine the best performing cultivar under water/drought stress. Three irrigation treatments include; 4 days (T 1 ), 6 days (T 2 ) and 8 days (T 3 ) in comparison to control 1 day (T 0 ) interval were imposed. Response characters under study were morphological, physiological and anatomical. Complete Randomized Design (CRD) with four replications in two factorial arrangements was followed for experiment layout. The results revealed that increasing water stress adversely affect plant height, in both cultivars. Both cultivars showed a decreasing trend to the number of flowers under water stress. Total chlorophyll contents including a, b were also showed reduction under prolonged drought treatment in both cultivars from (2.7 mg g -1 FW) to (1 mg g -1 FW). Overall, the performance of cultivar (cv.) Inca was satisfactory under water stress regimes. These results are helpful for selecting drought tolerant marigold cultivars in water scarce areas.

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Thermal responses of Durum wheat Triticum durum to early water stress. Consequence on leaf and flower development

Cited by 9 publications

References 14 publications

Exploring Jasmonates in the Hormonal Network of Drought and Salinity Responses

Exploring Jasmonates in the Hormonal Network of Drought and Salinity Responses

Coordination between plant and apex development in Hordeum vulgare ssp. distichum

Screening of marigold (Tagetes erecta L.) cultivars for drought stress based on vegetative and physiological characteristics

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