Heat tolerance in vegetables in the current genomic era: an overview

Aleem, Saba; Sharif, Iram; Amin, Etlas; Tahir, Muhammad; Parveen, Nusrat; Aslam, Rasheda; Najeebullah, Muhammad; Shahid, Muhammad

doi:10.1007/s10725-020-00658-5

Cited by 22 publications

(12 citation statements)

References 137 publications

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“…The control of the transcriptional regulation in plaats under heat stress also involves the small RNA world [93]. Genes being overexpressed during heat stress were identified in various crops [77,91,94,95]. Limiting our attention to representative genes of crop plants involved in heat stress-associated oxidative-induced damage, some examples include the StnsLTP1 gene which reduced lipid peroxidation in potato plants (S. tuberosum) subjected to heat stress; Cu/Zn SOD, APX, NDPK2 genes which increased oxidative tolerance during heat stress in potato plants (S. tuberosum) [29]; cAPX gene which increased tolerance to heat stress in tomato plants (S. lycopersicum); SAMDK gene which increased antioxidant activity and membrane stability during heat stress in tomato plants (S. lycopersicum).…”

Section: Heat Responsive Genesmentioning

confidence: 99%

Response and Defence Mechanisms of Vegetable Crops against Drought, Heat and Salinity Stress

2021

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Environmental pollution, increasing CO2 atmospheric levels and the greenhouse effect are closely associated with the ongoing climate change and the extreme climatic events we are witnessing all over the Earth. Drought, high temperature and salinity are among the main environmental stresses that negatively affect the yield of numerous crops, challenging the world food safety. These effects are more profound in vegetable crops which are generally more susceptible to climate change than field or tree crops. The response to single or combined environmental stressors involves various changes in plant morphology and physiology or in molecular processes. Knowing the mechanisms behind these responses may help towards the creation of more tolerant genotypes in the long-term. However, the imediacy of the problem requires urgently short-term measures such as the use of eco-sustainable agricultural practices which can alleviate the negative effects of environmental pollution and allow vegetable crops to adapt to adverse climatic conditions. In this review, the main abiotic stressors were examined, namely drought, heat and salinity stress, focusing on the mechanisms involved in the most common vegetable crops responses. Moreover, the use of eco-sustainable cultural techniques, such as biostimulants, grafting and genomic sequencing techniques, to increase the quality of tomato crop under adverse environmental conditions are also presented.

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Section: Heat Responsive Genesmentioning

confidence: 99%

Response and Defence Mechanisms of Vegetable Crops against Drought, Heat and Salinity Stress

2021

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“…Heat stress appears with sudden increases in temperature, 10 or 15 °C above usual conditions [43], and its consequence depends on the plant genotype and ecotype, on the level of incremented temperature, and on the length of the stress [44,45]. Plants may survive heat stress through heat-avoidance or heat-tolerance mechanisms [46]. The avoidance processes intend to ensure the survival of a plant, for example altering its leaf orientation or regulating its stomatal conductance, while heattolerance mechanisms are related to the plant's ability to maintain its growth under heat stress.…”

Section: Heat Stressmentioning

confidence: 99%

Improving Abiotic Stress Tolerance of Forage Grasses – Prospects of Using Genome Editing

Sustek-Sánchez¹,

Rognli²,

Rostoks³

et al. 2022

Preprint

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Due to an increase in the consumption of food, feed, and fuel and to meet global food security needs for the rapidly growing human population, there is a necessity to obtain high-yielding crops that can adapt to future climate changes. Currently, the main feed source used for ruminant livestock production is forage grasses. In temperate climate zones, perennial grasses grown for feed are widely distributed and tend to suffer under unfavorable environmental conditions. Gene editing has been shown to be an effective tool for the development of abiotic stress-resistant plants. The highly versatile CRISPR-Cas system enables increasingly complex modifications in genomes while maintaining precision and low off-target frequency mutations. In this review, we provide an overview of forage grass species that have been subjected to gene editing. We offer a perspective view on the generation of plants resilient to abiotic stresses. Due to the broad factors contributing to these stresses the review focuses on drought, salt, heat, and cold stresses. The application of new genomic techniques (e.g., CRISPR-Cas) allows addressing several challenges caused by climate change and abiotic stresses for developing forage grass cultivars with improved adaptation to the future climatic conditions. Gene editing will contribute towards developing safe and sustainable food systems.

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“…Meta-quality trait loci (meta-QTL analysis) and multiparent advanced generation intercross (MAGIC) have been used to provide a higher mapping resolution in heat-tolerant tomato breeding programs. In addition, speed breeding and genomic selection (GS) significantly contribute to thermotolerance in tomatoes (Ayenan et al, 2019;Aleem et al, 2020;Bineau et al, 2021). There are several ways of mitigating the effects of HS on tomatoes, for example, applying plant growth-promoting rhizobacteria (PGPR) (Mukhtar et al, 2020), or using 6 ppm sulfur (Ali et al, 2021), or nitrate seed priming .…”

Section: Breeding Materials and Technology To Mitigate Hs Influencementioning

confidence: 99%

Genetic and Molecular Mechanisms Conferring Heat Stress Tolerance in Tomato Plants

et al. 2021

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Climate change is a major threat to global food security. Changes in climate can directly impact food systems by reducing the production and genetic diversity of crops and their wild relatives, thereby restricting future options for breeding improved varieties and reducing the ability to adapt crops to future challenges. The global surface temperature is predicted to rise by an average of 0.3°C during the next decade, and the Paris Agreement (Paris Climate Accords) aims to limit global warming to below an average of 2°C, preferably to 1.5°C compared to pre-industrial levels. Even if the goal of the Paris Agreement can be met, the predicted rise in temperatures will increase the likelihood of extreme weather events, including heatwaves, making heat stress (HS) a major global abiotic stress factor for many crops. HS can have adverse effects on plant morphology, physiology, and biochemistry during all stages of vegetative and reproductive development. In fruiting vegetables, even moderate HS reduces fruit set and yields, and high temperatures may result in poor fruit quality. In this review, we emphasize the effects of abiotic stress, especially at high temperatures, on crop plants, such as tomatoes, touching upon key processes determining plant growth and yield. Specifically, we investigated the molecular mechanisms involved in HS tolerance and the challenges of developing heat-tolerant tomato varieties. Finally, we discuss a strategy for effectively improving the heat tolerance of vegetable crops.

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Heat tolerance in vegetables in the current genomic era: an overview

Cited by 22 publications

References 137 publications

Response and Defence Mechanisms of Vegetable Crops against Drought, Heat and Salinity Stress

Response and Defence Mechanisms of Vegetable Crops against Drought, Heat and Salinity Stress

Improving Abiotic Stress Tolerance of Forage Grasses – Prospects of Using Genome Editing

Genetic and Molecular Mechanisms Conferring Heat Stress Tolerance in Tomato Plants

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