Recent advances in molecular tool development for drought tolerance breeding in cereal crops: a review

Khan, Mueen Alam; Iqbal, Muhammad; Akram, Muhammad; Ahmad, Maqshoof; Hassan, Muhammad Waqar; Jamil, Moazzam

doi:10.13080/z-a.2013.100.042

Cited by 22 publications

(11 citation statements)

References 117 publications

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“…In addition to physiological parameters and agronomical observations, the genomics-based approaches provide excellent opportunities to search for loci that correlate with the observed phenotype variation and to map QTLs for drought tolerance (reviewed in [ 49 ]). Molecular markers have been extensively used for characterization and selection of wheat germplasm with better agronomic performance.…”

Section: Resultsmentioning

confidence: 99%

Osmoregulation capacity in Bulgarian durum wheat

Todorovska

Bozhanova

Dechev

et al. 2014

Biotechnology & Biotechnological Equipment

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The phenotypic variation in osmotic adjustment (OA) capacity of five Bulgarian winter durum wheat genotypes and their progenies was determined using a modified method based on the measurement of seedling growth suppression after three-day exposure to osmotic stress induced by 1 mol/L sucrose. The genetic parameters of the studied trait in a diallel crossing scheme, including the selected genotypes and the microsatellite polymorphism at 43 loci, were determined. The old Bulgarian cultivar Apulicum 233 and all hybrid combinations involving this genotype showed higher OA. In the heritability of osmoregulation ability, the non-additive gene effects (specific combining ability) strongly predominated over the additive ones and had a significant impact on the observed high heterosis effect. Distinct polymorphisms were identified between the studied genotypes. Cluster analysis of the phenotypic data obtained from a multiyear test under water-limited conditions and the molecular data, both based on Euclidean distance, showed similar grouping of the genotypes with specific separation of cultivar Apulicum 233 (high OA) in a single cluster. Principal component analysis revealed not only interrelationships between the important agronomic and morpho-physiological traits in Bulgarian durum wheat under water-limited conditions, but also presence of relations between them and some microsatellite loci located near or within known quantitative trait loci (QTLs) for these traits. Further studies based on segregating population between genotypes with contrasting levels of OA will allow mapping QTLs for phenotypic traits expressed under water deficit and isolation of genes that can be used as potential markers in marker-assisted selection for drought tolerance.

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Section: Resultsmentioning

confidence: 99%

Osmoregulation capacity in Bulgarian durum wheat

Todorovska

Bozhanova

Dechev

et al. 2014

Biotechnology & Biotechnological Equipment

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“…Two groups of proteins are involved in such responses and are categorised as either functional or regulatory proteins (Singh & Laxmi 2015). The functional proteins include heat shock proteins (HSPs), LEA proteins and aquaporins (water channel proteins) whereas the regulatory proteins include transcription factors, protein phosphatases and kinases, and the proteins concerned with ABA biosynthesis (Feki & Brini 2016; Khan et al 2013).…”

Section: Transcriptional Regulation and Signaling Under Water Deficit Stressmentioning

confidence: 99%

“…Stress‐related proteins are mainly water soluble in nature and hydrates cellular structures, thus contributing towards stress tolerance by hydration (Farooq et al 2009). Accumulation of certain stress‐related proteins such as HSPs and LEA proteins occurs in response to drought stress (Joshi et al 2016; Khan et al 2013). HSPs belong to a group of molecules known as chaperones and are implicated in stabilizing the structure of other proteins.…”

Section: Transcriptional Regulation and Signaling Under Water Deficit Stressmentioning

confidence: 99%

“…A wide array of characteristic feature related to morphology, physiology, anatomy, and biochemistry of plant are closely associated with the development of drought resistant species. Identification and isolation of the desired trait genes for development of drought tolerant species along with no negative impact on the production and yield of the plant is being emphasized (Khan et al 2013). A few qualitative traits that are considered significant for establishing a drought tolerant variety include noticeably small size of the plant, condensed leaf surface area, vigorous root growth, and depth of the roots should be elevated, the yield of the plant is to be high and early maturity is preferred.…”

Section: Strategies To Combat Water Deficit Stressmentioning

confidence: 99%

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Scrutinizing the impact of water deficit in plants: Transcriptional regulation, signaling, photosynthetic efficacy, and management

Kaur

Kohli

Khanna

et al. 2021

Physiologia Plantarum

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Suboptimal availability of water limits plant growth, development, and performance.Drought is one of the leading factors responsible for worldwide crop yield reduction. In the future, owing to climate changes, more agricultural land will be affected by prolonged periods of water deficit. Thus, understanding the fundamental mechanism of drought response is a major scientific concern for improvement of crop production. To combat drought stress, plants deploy varied mechanistic strategies and alter their morphological, physiochemical, and molecular attributes. This helps plant to enhance water uptake and storage, reduce water loss and avoid wilting. Induction of several transcription factors and drought responsive genes leads to synthesis of stress proteins, regulation of water channels i.e. aquaporins and production of osmolytes that are essential for maintenance of osmotic balance at the cellular level. Self-and hormone-regulated signaling pathways are often stimulated by plants after receiving drought stress signals via secondary messengers, mitogen-activated protein kinases, and stress hormones. These signaling cascades often leads to stomatal closure and reduction in transpiration rates. Reduced carbon dioxide diffusion in chloroplast, lowered efficacy of photosystems, and other metabolic constraints limits the key regulatory photosynthetic process during water deficit. The impact of these stomatal and nonstomatal limitations varies with stress intensity, superimposed stresses and plant species. A clear understanding of the drought resistance process is thus important before adopting strategies for imparting drought tolerance in plants. These management practices at present include exogenous hormone application, breeding, and genetic engineering techniques for combating the water deficit issues.

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“…The signal transduction process of plants from sensing environmental stimuli to responding to them generally includes three parts: (1) The sensory transduction and response of sensory cells to environmental stimuli, namely the original signal sensory transduction process, producing intercellular messenger; (2) The intercellular messenger is transmitted between cells or tissues, and finally acts on the receptor cell site; (3) The transduction and response of acceptor cells to intercellular messengers lead to physiological, biochemical and functional changes in the acceptor tissues, which are ultimately reflected in the response of plants to environmental stimuli or adversity [132].…”

Section: Drought Stress Signal Transduction In Plantsmentioning

confidence: 99%

A Review on Response Mechanism of Plants to Drought Stress

Yang¹,

Lu²,

Wang³

et al. 2021

Preprint

135

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With the global climate anomalies and the destruction of ecological balance, water shortage has become a serious ecological problem facing all mankind, and drought has become a key factor restricting the development of agricultural production. Therefore, it is essential to study the drought tolerance of crops. On the basis of previous studies, we reviewed the effects of drought stress on plant morphology and physiology, including the changes of external morphology and internal structure of root, stem and leaf, the effects of drought stress on osmotic regulation sub-stances, drought-induced proteins and active oxygen metabolism of plants. In this paper, the main drought stress signals and signal transduction pathways in plants are described, and the functional genes and regulatory genes related to drought stress are listed respectively. We summarize the above aspects in order to provide valuable background knowledge and theoret-ical basis for future agriculture and forestry breeding and cultivation.

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Recent advances in molecular tool development for drought tolerance breeding in cereal crops: a review

Cited by 22 publications

References 117 publications

Osmoregulation capacity in Bulgarian durum wheat

Osmoregulation capacity in Bulgarian durum wheat

Scrutinizing the impact of water deficit in plants: Transcriptional regulation, signaling, photosynthetic efficacy, and management

A Review on Response Mechanism of Plants to Drought Stress

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