Physiological and molecular insights on wheat responses to heat stress

Lal, Milan Kumar; Tiwari, Rahul Kumar; Gahlaut, Vijay; Mangal, Vikas; Kumar, Awadhesh; Singh, Madan Pal; Paul, Vijay; Kumar, Sudhir; Singh, Brajesh; Zinta, Gaurav

doi:10.1007/s00299-021-02784-4

Cited by 64 publications

(33 citation statements)

References 161 publications

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“…The reduction in photosynthesis rate under HS is correlated with the increase in the non-photorespiratory processes and reduction of soluble proteins, Rubisco and Rubisco binding proteins [ 72 , 73 ]. These sequential changes results in reduced leaf area, less effective photosynthetic machinery, early leaf senescence, overproduction of reactive oxygen species (ROS), disruption of thylakoid membrane, alteration of enzyme action, and denaturation of heat shock proteins (HSPs), which ultimately reduces wheat productivity [ 6 , 55 , 74 ]. The reduction in total chlorophyll content with accelerated leaf senescence diminishes the photosynthetic capacity of the plant [ 61 ].…”

Section: Responses Of Wheat To Hsmentioning

confidence: 99%

“…To better cope with the climatic variables (e.g., temperature and rainfall), their impacts must be quantified and understood. The adverse impact of heat stress (HS) induced through rising ambient temperature and unpredictable climatic variations is clear and threatening wheat production in all ecologies (temperate, subtropical and in tropical) [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

“…Besides, different biotechnological tools, e.g., transgenics and gene editing, along with recently developed omics approaches can help to develop HS tolerant cultivars [ 28 ]. The most reliable and inexpensive method to improve plant resilience to HS includes a combination of stress tolerant genotypes and agronomic management strategies, such as the application of exogenous protectants, adoption of climate-smart cultivation practices including conservation agriculture (CA), micro-irrigation and mulching, and use of cultured soil microbes [ 6 , 29 , 30 , 31 , 32 ]. However, the limited progress and success in the development of HS resilience in wheat can be attributed to the lack of coordinated efforts by plant breeders, biotechnologists, agronomists, and physiologists.…”

Section: Introductionmentioning

confidence: 99%

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Impacts, Tolerance, Adaptation, and Mitigation of Heat Stress on Wheat under Changing Climates

Yadav

Choudhary

Singh

et al. 2022

IJMS

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Heat stress (HS) is one of the major abiotic stresses affecting the production and quality of wheat. Rising temperatures are particularly threatening to wheat production. A detailed overview of morpho-physio-biochemical responses of wheat to HS is critical to identify various tolerance mechanisms and their use in identifying strategies to safeguard wheat production under changing climates. The development of thermotolerant wheat cultivars using conventional or molecular breeding and transgenic approaches is promising. Over the last decade, different omics approaches have revolutionized the way plant breeders and biotechnologists investigate underlying stress tolerance mechanisms and cellular homeostasis. Therefore, developing genomics, transcriptomics, proteomics, and metabolomics data sets and a deeper understanding of HS tolerance mechanisms of different wheat cultivars are needed. The most reliable method to improve plant resilience to HS must include agronomic management strategies, such as the adoption of climate-smart cultivation practices and use of osmoprotectants and cultured soil microbes. However, looking at the complex nature of HS, the adoption of a holistic approach integrating outcomes of breeding, physiological, agronomical, and biotechnological options is required. Our review aims to provide insights concerning morpho-physiological and molecular impacts, tolerance mechanisms, and adaptation strategies of HS in wheat. This review will help scientific communities in the identification, development, and promotion of thermotolerant wheat cultivars and management strategies to minimize negative impacts of HS.

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Section: Responses Of Wheat To Hsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impacts, Tolerance, Adaptation, and Mitigation of Heat Stress on Wheat under Changing Climates

Yadav

Choudhary

Singh

et al. 2022

IJMS

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“…In the early stages of grain filling, HS affects the starch biosynthesis and assimilates translocation leading to poor yield and quality of wheat produce ( Farooq et al, 2011 ; Kumar et al, 2013 ; Shamloo et al, 2017 ). Plants modulate their molecular machinery at the transcriptional, post-transcriptional, and epigenetic levels in order to regulate the differential expression of HS-related genes, photosynthetic machinery, cell membrane thermostability, induction of heat shock proteins (HSPs), stress hormones (ABA, ethylene), reactive oxygen species (ROS), compatible solutes (proline, glycine betaine, and sugars) accumulation, and non-coding RNAs synthesis ( Farooq et al, 2011 ; Grover et al, 2013 ; Goswami et al, 2014 ; Lal et al, 2021 ; Zhao et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

RNA-Seq Analysis of Developing Grains of Wheat to Intrigue Into the Complex Molecular Mechanism of the Heat Stress Response

et al. 2022

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Heat stress is one of the significant constraints affecting wheat production worldwide. To ensure food security for ever-increasing world population, improving wheat for heat stress tolerance is needed in the presently drifting climatic conditions. At the molecular level, heat stress tolerance in wheat is governed by a complex interplay of various heat stress-associated genes. We used a comparative transcriptome sequencing approach to study the effect of heat stress (5°C above ambient threshold temperature of 20°C) during grain filling stages in wheat genotype K7903 (Halna). At 7 DPA (days post-anthesis), heat stress treatment was given at four stages: 0, 24, 48, and 120 h. In total, 115,656 wheat genes were identified, including 309 differentially expressed genes (DEGs) involved in many critical processes, such as signal transduction, starch synthetic pathway, antioxidant pathway, and heat stress-responsive conserved and uncharacterized putative genes that play an essential role in maintaining the grain filling rate at the high temperature. A total of 98,412 Simple Sequences Repeats (SSR) were identified from de novo transcriptome assembly of wheat and validated. The miRNA target prediction from differential expressed genes was performed by psRNATarget server against 119 mature miRNA. Further, 107,107 variants including 80,936 Single nucleotide polymorphism (SNPs) and 26,171 insertion/deletion (Indels) were also identified in de novo transcriptome assembly of wheat and wheat genome Ensembl version 31. The present study enriches our understanding of known heat response mechanisms during the grain filling stage supported by discovery of novel transcripts, microsatellite markers, putative miRNA targets, and genetic variant. This enhances gene functions and regulators, paving the way for improved heat tolerance in wheat varieties, making them more suitable for production in the current climate change scenario.

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“…The review article byLal et al (2021) discusses the role of the interplay of antioxidants and hormones in imparting heat stress tolerance in wheat and also discusses approaches to develop heat-tolerant wheat varieties Riyazuddin et al (2021). summarize the role of dehydrin (DHN) proteins.…”

mentioning

confidence: 99%