Molecular Aspects of Drought Tolerance in Bread Wheat (T. aestivum)

Farshadfar, Ezatollah; Ghasempour, Hamid Reza; Vaezi, Hossein

doi:10.3923/pjbs.2008.118.122

Cited by 22 publications

(13 citation statements)

References 15 publications

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“…In extreme dehydrated states, sugars become an essential replacement for water, even more than proline, providing a hydration shell around proteins [4]. Wheat genotypes accumulate more soluble sugars during the grain filling period than the pre-anthesis stage under drought stress [75]. On the other hand, the reduction of total soluble sugars could be ascribed to water induced loss of solutes (mainly K + ) from guard cells, which resulted in a selective reduction in guard cells turgor leading to stomatal closure [76].…”

Section: Physiological and Biochemical Responsesmentioning

confidence: 99%

“…In addition, the generation of ROS caused the oxidation of amino acids and could burst the protein structure under drought stress. However, a significant relationship was observed among total proteins and grain yield of wheat under rain-fed conditions [75]. On the other hand, an increase in shoot proteins of the wheat plants cultivated under water stress condition was observed [35].…”

Section: Physiological and Biochemical Responsesmentioning

confidence: 99%

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Drought Stress Tolerance in Wheat and Barley: Advances in Physiology, Breeding and Genetics Research

Sallam

Alqudah

Dawood

et al. 2019

IJMS

464

312

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Climate change is a major threat to most of the agricultural crops grown in tropical and sub-tropical areas globally. Drought stress is one of the consequences of climate change that has a negative impact on crop growth and yield. In the past, many simulation models were proposed to predict climate change and drought occurrences, and it is extremely important to improve essential crops to meet the challenges of drought stress which limits crop productivity and production. Wheat and barley are among the most common and widely used crops due to their economic and social values. Many parts of the world depend on these two crops for food and feed, and both crops are vulnerable to drought stress. Improving drought stress tolerance is a very challenging task for wheat and barley researchers and more research is needed to better understand this stress. The progress made in understanding drought tolerance is due to advances in three main research areas: physiology, breeding, and genetic research. The physiology research focused on the physiological and biochemical metabolic pathways that plants use when exposed to drought stress. New wheat and barley genotypes having a high degree of drought tolerance are produced through breeding by making crosses from promising drought-tolerant genotypes and selecting among their progeny. Also, identifying genes contributing to drought tolerance is very important. Previous studies showed that drought tolerance is a polygenic trait and genetic constitution will help to dissect the gene network(s) controlling drought tolerance. This review explores the recent advances in these three research areas to improve drought tolerance in wheat and barley.

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Section: Physiological and Biochemical Responsesmentioning

confidence: 99%

Section: Physiological and Biochemical Responsesmentioning

confidence: 99%

Drought Stress Tolerance in Wheat and Barley: Advances in Physiology, Breeding and Genetics Research

Sallam

Alqudah

Dawood

et al. 2019

IJMS

464

312

View full text Add to dashboard Cite

show abstract

“…Wheat is one of the most important cereal crops for human consumption [ 1 ]. Fusarium species are responsible for many economically important cereal diseases such as head blights, ear rots and stem diseases, resulting in severe reductions in crop yield by up to 40% [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Fusarium spp. and Fumonisins in Stored Wheat Grains Marketed in Iran

Chehri

Jahromi²,

Reddy

et al. 2010

Toxins

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Wheat grains are well known to be invaded by Fusarium spp. under field and storage conditions and contaminated with fumonisins. Therefore, determining Fusarium spp. and fumonisins in wheat grains is of prime importance to develop suitable management strategies and to minimize risk. Eighty-two stored wheat samples produced in Iran were collected from various supermarkets and tested for the presence of Fusarium spp. by agar plate assay and fumonisins by HPLC. A total of 386 Fusarium strains were isolated and identified through morphological characteristics. All these strains belonged to F. culmorum, F. graminearum, F. proliferatum and F. verticillioides. Of the Fusarium species, F. graminearum was the most prevalent species, followed by F. verticillioides, F. proliferatum and then F. culmorum. Natural occurrence of fumonisin B1 (FB1) could be detected in 56 (68.2%) samples ranging from 15–155 μg/kg, fumonisin B2 (FB2) in 35 (42.6%) samples ranging from 12–86 μg/kg and fumonisin B3 (FB3) in 26 (31.7%) samples ranging from 13–64 μg/kg. The highest FB1 levels were detected in samples from Eilam (up to 155 μg/kg) and FB2 and FB3 in samples from Gilan Gharb (up to 86 μg/kg and 64 μg/kg).

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“…It is one of the main staple foods in developing countries and the aspects of production and consumption is the most important grain in Iran (FAO, 2001). Bread wheat (Triticum aestivum L.) is the main cereal used for human consumption in Iran (Farshadfar et al, 2008). Information about fungi associated with these grains is important in assessing the risk of mycotoxin contamination.…”

Section: Introductionmentioning

confidence: 99%

Investigation of stored wheat mycoflora, reporting theFusarium cf.langsethiae in three provinces of Iran during 2007

et al. 2009

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-were the predominant Aspergillus species identified as exogenous mycoflora. Aspergillus flavus (26.6%) was the predominant Aspergillus species identified as endogenous mycoflora. Flotation method with MGA 0.25 recommended for isolating of hyaline fungi from wheat cereals. In this study one isolate from Fusarium species was isolated on the basis of morphology and ribosomal internal transcribed spacer classified as Fusarium langsethiae but on the basis of partial translation elongation factor-1alpha gene grouped with Fusarium sporotrichioides. To our knowledge, this is the first report about F. cf. langsethiae in Iran and Asia.

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Molecular Aspects of Drought Tolerance in Bread Wheat (T. aestivum)

Cited by 22 publications

References 15 publications

Drought Stress Tolerance in Wheat and Barley: Advances in Physiology, Breeding and Genetics Research

Drought Stress Tolerance in Wheat and Barley: Advances in Physiology, Breeding and Genetics Research

Occurrence of Fusarium spp. and Fumonisins in Stored Wheat Grains Marketed in Iran

Investigation of stored wheat mycoflora, reporting theFusarium cf.langsethiae in three provinces of Iran during 2007

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