Molecular and genetic bases of heat stress responses in crop plants and breeding for increased resilience and productivity

Janni, Michela; Gullì, Mariolina; Maestri, Elena; Marmiroli, Marta; Valliyodan, Babu; Nguyen, Henry T.; Marmiroli, Nelson

doi:10.1093/jxb/eraa034

Cited by 232 publications

(165 citation statements)

References 322 publications

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“…Plants recruit a variety of mechanisms, including adaptive, biochemical, and molecular, to cope with heat stress [2,108]. Plants produce different phytohormones, heat shock proteins (HSPs)/chaperones, antioxidant enzymes, and metabolites that play a critical role in adjusting to heat stress [108,109]. At the molecular level, the activation of regulatory pathways plays a role in plant adaptation to heat stress [2].…”

Section: Lncrnas Controlling Heat Stress Tolerancementioning

confidence: 99%

Long non-coding RNAs: emerging players regulating plant abiotic stress response and adaptation

et al. 2020

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Background The immobile nature of plants means that they can be frequently confronted by various biotic and abiotic stresses during their lifecycle. Among the various abiotic stresses, water stress, temperature extremities, salinity, and heavy metal toxicity are the major abiotic stresses challenging overall plant growth. Plants have evolved complex molecular mechanisms to adapt under the given abiotic stresses. Long non-coding RNAs (lncRNAs)—a diverse class of RNAs that contain > 200 nucleotides(nt)—play an essential role in plant adaptation to various abiotic stresses. Results LncRNAs play a significant role as ‘biological regulators’ for various developmental processes and biotic and abiotic stress responses in animals and plants at the transcription, post-transcription, and epigenetic level, targeting various stress-responsive mRNAs, regulatory gene(s) encoding transcription factors, and numerous microRNAs (miRNAs) that regulate the expression of different genes. However, the mechanistic role of lncRNAs at the molecular level, and possible target gene(s) contributing to plant abiotic stress response and adaptation, remain largely unknown. Here, we review various types of lncRNAs found in different plant species, with a focus on understanding the complex molecular mechanisms that contribute to abiotic stress tolerance in plants. We start by discussing the biogenesis, type and function, phylogenetic relationships, and sequence conservation of lncRNAs. Next, we review the role of lncRNAs controlling various abiotic stresses, including drought, heat, cold, heavy metal toxicity, and nutrient deficiency, with relevant examples from various plant species. Lastly, we briefly discuss the various lncRNA databases and the role of bioinformatics for predicting the structural and functional annotation of novel lncRNAs. Conclusions Understanding the intricate molecular mechanisms of stress-responsive lncRNAs is in its infancy. The availability of a comprehensive atlas of lncRNAs across whole genomes in crop plants, coupled with a comprehensive understanding of the complex molecular mechanisms that regulate various abiotic stress responses, will enable us to use lncRNAs as potential biomarkers for tailoring abiotic stress-tolerant plants in the future.

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Section: Lncrnas Controlling Heat Stress Tolerancementioning

confidence: 99%

Long non-coding RNAs: emerging players regulating plant abiotic stress response and adaptation

et al. 2020

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“…At post anthesis stage, metabolites viz., drummondol, anthranilate appear to regulate heat stress response in wheat flag leaves (Thomason et al, 2018). The studies pinpoint that metabolomics along with system biology approaches could significantly enhance significantly our understanding of various metabolites produced in response to heat stress (Janni et al, 2020) and would be a vital tool to develop heat tolerant crops in agriculture.…”

Section: Metabolomicsmentioning

confidence: 99%

“…Plant heat tolerance being a quantitative trait is highly influenced by G × E interactions and genetic inheritance of heat tolerance remains challenging. Large scale DNA-based marker development during the last decade led to mapping of QTLs linked to heat tolerance in various crops (Jha et al, 2014;Janni et al, 2020). Advances in sequencing technologies especially, next generation sequencing (NGS), genotyping by sequencing (GBS), and other high throughput genotyping platforms have facilitated narrowing down of the heat tolerance QTL regions for analysis of candidate genes (Xu et al, 2017;Kilasi et al, 2018;Inghelandt et al, 2019;Tadesse et al, 2019).…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Identification and Characterization of Contrasting Genotypes/Cultivars for Developing Heat Tolerance in Agricultural Crops: Current Status and Prospects

et al. 2020

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“…Hsp70s are a class of highly conserved proteins which act as molecular chaperones and play a crucial role in protecting the plant cells from the harmful effects of heat stress. Hsp70 is known to accumulate in heat-stressed tissue and overexpression of Hsp70 was shown to enhance tolerance to heat stress in several plant species including brassica, tobacco and rice [ 27 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

A High Temperature Environment Regulates the Olive Oil Biosynthesis Network

Nissim

Shlosberg

Biton

et al. 2020

Plants

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Climate change has been shown to have a substantial impact on agriculture and high temperatures and heat stress are known to have many negative effects on the vegetative and reproductive phases of plants. In a previous study, we addressed the effects of high temperature environments on olive oil yield and quality, by comparing the fruit development and oil accumulation and quality of five olive cultivars placed in high temperature and moderate temperature environments. The aim of the current study was to explore the molecular mechanism resulting in the negative effect of a high temperature environment on oil quantity and quality. We analyzed the transcriptome of two extreme cultivars, ‘Barnea’, which is tolerant to high temperatures in regard to quantity of oil production, but sensitive regarding its quality, and ‘Souri’, which is heat sensitive regarding quantity of oil produced, but relatively tolerant regarding its quality. Transcriptome analyses have been carried out at three different time points during fruit development, focusing on the genes involved in the oil biosynthesis pathway. We found that heat-shock protein expression was induced by the high temperature environment, but the degree of induction was cultivar dependent. The ‘Barnea’ cultivar, whose oil production showed greater tolerance to high temperatures, exhibited a larger degree of induction than the heat sensitive ‘Souri’. On the other hand, many genes involved in olive oil biosynthesis were found to be repressed as a response to high temperatures. OePDCT as well as OeFAD2 genes showed cultivar dependent expression patterns according to their heat tolerance characteristics. The transcription factors OeDof4.3, OeWRI1.1, OeDof4.4 and OeWRI1.2 were identified as key factors in regulating the oil biosynthesis pathway in response to heat stress, based on their co-expression characteristics with other genes involved in this pathway. Our results may contribute to identifying or developing a more heat tolerant cultivar, which will be able to produce high yield and quality oil in a future characterized by global warming.

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Molecular and genetic bases of heat stress responses in crop plants and breeding for increased resilience and productivity

Cited by 232 publications

References 322 publications

Long non-coding RNAs: emerging players regulating plant abiotic stress response and adaptation

Long non-coding RNAs: emerging players regulating plant abiotic stress response and adaptation

Identification and Characterization of Contrasting Genotypes/Cultivars for Developing Heat Tolerance in Agricultural Crops: Current Status and Prospects

A High Temperature Environment Regulates the Olive Oil Biosynthesis Network

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