Analysis of novel haplotype variation at<i><scp>TaDREB‐D1</scp></i>and<i><scp>TaCwi‐D1</scp></i>genes influencing drought tolerance in bread/synthetic wheat derivatives

Khalid, Maria; Afzal, Fakiha; Gul, Alvina; Ahanger, Mohammad Abass; Ahmad, Parvaiz

doi:10.1002/9781119054450.ch15

Cited by 4 publications

(3 citation statements)

References 159 publications

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“…One drought tolerance trait is the accumulation of compatible organic osmolytes such as proline and sugars (Khalid et al, 2016). Drought-stressed sunflower seedlings accumulated sugars and proline that were comparable to the control, which was further enhanced by TRIA treatment.…”

Section: Discussionmentioning

confidence: 99%

Triacontanol Foliar Spray Alleviated Drought Stress Effects by Maintaining Photosynthesis and Cellular Redox Balance in Sunflower Seedlings

Ismail

Younis

2021

Egyptian Academic Journal of Biological Sciences, H. Botany

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Water scarcity and demand for both fresh water and agriculture have overgrown in the last decades, as more than two-thirds of the fresh water in the world are consumed in agriculture (FAO, 2017). About 96% of Egypt's are deserts, leaving only 4% of cultivated lands that are threatened by urbanism and stresses especially drought (Gad, 2020). The frequency and severity of drought events, especially in the Mediterranean basin, have been predicted to increase shortly (Tramblay et al., 2020). Drought has great impacts on the growth, physiology, and biochemistry of several plant species (Jafari et al., 2019), and its effects are expected to exaggerate as global temperature increases. It has been reported that drought stress can directly cause a wide range of injury symptoms in plants, such as limited

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Section: Discussionmentioning

confidence: 99%

Triacontanol Foliar Spray Alleviated Drought Stress Effects by Maintaining Photosynthesis and Cellular Redox Balance in Sunflower Seedlings

Ismail

Younis

2021

Egyptian Academic Journal of Biological Sciences, H. Botany

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“…After that, the sap flow per tiller reduced in the irrigated plot of the stony soil because of the reduction in leaf area (the sap flow per leaf area remained similar to that in the silty soil). Water stress limited the leaf development of wheat in both longevity and quantity (Khalid et al, 2016;Zhou et al, 2015). The sap flow per tiller in the rainfed plot of the stony soil became smaller than that in the irrigated plot or in the silty soil after 11 June but recovered for a short time period to the same sap flow after the rainfall on 10 June.…”

Section: P1mentioning

confidence: 98%

Root growth, water uptake, and sap flow of winter wheat in response to different soil water conditions

Cai¹,

Vanderborght²,

Langensiepen

et al. 2018

Hydrol. Earth Syst. Sci.

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Abstract. How much water can be taken up by roots and how this depends on the root and water distributions in the root zone are important questions that need to be answered to describe water fluxes in the soil-plant-atmosphere system. Physically based root water uptake (RWU) models that relate RWU to transpiration, root density, and water potential distributions have been developed but used or tested far less. This study aims at evaluating the simulated RWU of winter wheat using the empirical Feddes-Jarvis (FJ) model and the physically based Couvreur (C) model for different soil water conditions and soil textures compared to sap flow measurements. Soil water content (SWC), water potential, and root development were monitored noninvasively at six soil depths in two rhizotron facilities that were constructed in two soil textures: stony vs. silty, with each of three water treatments: sheltered, rainfed, and irrigated. Soil and root parameters of the two models were derived from inverse modeling and simulated RWU was compared with sap flow measurements for validation. The different soil types and water treatments resulted in different crop biomass, root densities, and root distributions with depth. The two models simulated the lowest RWU in the sheltered plot of the stony soil where RWU was also lower than the potential RWU. In the silty soil, simulated RWU was equal to the potential uptake for all treatments. The variation of simulated RWU among the different plots agreed well with measured sap flow but the C model predicted the ratios of the transpiration fluxes in the two soil types slightly better than the FJ model. The root hydraulic parameters of the C model could be constrained by the field data but not the water stress parameters of the FJ model. This was attributed to differences in root densities between the different soils and treatments which are accounted for by the C model, whereas the FJ model only considers normalized root densities. The impact of differences in root density on RWU could be accounted for directly by the physically based RWU model but not by empirical models that use normalized root density functions.

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“…Secondly, the ratios of the FJ model simulations vary less than the ratios of the sap flow measurements whereas the range of ratios of the C model simulations is area remained similar to that in the silty soil). Water stress limited the leaf development of wheat in both longevity and quantity (Khalid et al, 2016;Zhou et al, 2015). The sap flow per tiller in the rainfed plot of the stony soil became smaller than that in the irrigated plot or in the silty soil after 11 June but recovered for a short time period to same sap flow after the rainfall on 10…”

mentioning

confidence: 99%

Root growth, water uptake, and sap flow of winter wheat in response to different soil water availability

Cai

Vanderborght

Langensiepen

et al. 2017

Preprint

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Abstract. How much and where water is taken up by roots from the soil profile are important questions that need to be answered to close the soil water balance equation and to describe water fluxes in the soil-plant-atmosphere system. Physicallybased root water uptake (RWU) models that relate RWU to transpiration, root density, and water potential distributions have been developed but far less used or tested. This study aims at evaluating the simulated RWU of winter wheat by the empirical Feddes-Jarvis (FJ) model and the physically-based Couvreur (C) model for different soil water conditions and soil textures 5 against sap flow measurements. Soil water content (SWC), water potential, and root development were monitored noninvasively at six soil depths in two rhizotron facilities that were constructed in two soil textures: stony vs. silty with each three water treatments: sheltered, rainfed, and irrigated. Soil and root parameters of the two models were derived from inverse modeling and simulated RWU was compared with sap flow measurements for validation. The different soil types and water treatments resulted in different crop biomass, root densities and root distributions with depth. The two models simulated the 10 lowest RWU in the sheltered plot of the stony soil where RWU was also lower than the potential RWU. In the silty soil, simulated RWU was equal to the potential uptake for all treatments. The variation of simulated RWU among the different plots agreed well with measured sap flow but the C model predicted the ratios of the transpiration fluxes in the two soil types slightly better than the FJ model. The root hydraulic parameters of the C model could be constrained by the field data but not the water stress parameters of the FJ model. This was attributed to differences in root densities between the different soils and 15 treatments which are accounted for by the C model whereas the FJ model only considers normalized root densities. The impact of differences in root density on RWU could be accounted for directly by the physically-based RWU model but not by empirical models that use normalized root density functions.

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Analysis of novel haplotype variation atTaDREB‐D1andTaCwi‐D1genes influencing drought tolerance in bread/synthetic wheat derivatives

Cited by 4 publications

References 159 publications

Triacontanol Foliar Spray Alleviated Drought Stress Effects by Maintaining Photosynthesis and Cellular Redox Balance in Sunflower Seedlings

Triacontanol Foliar Spray Alleviated Drought Stress Effects by Maintaining Photosynthesis and Cellular Redox Balance in Sunflower Seedlings

Root growth, water uptake, and sap flow of winter wheat in response to different soil water conditions

Root growth, water uptake, and sap flow of winter wheat in response to different soil water availability

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