Interaction between the Circadian Clock and Regulators of Heat Stress Responses in Plants

Mody, Tejasvinee Atul; Bonnot, Titouan; Nagel, Dawn H.

doi:10.3390/genes11020156

Cited by 17 publications

(15 citation statements)

References 115 publications

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“…For instance, HS elicits morphological injuries, usually expressed as reduced growth, improper development and leaf senescence (Hasanuzzaman et al ., 2013; Nadeem et al ., 2018). At the physiological level, HS impacts photosynthesis, respiration and membrane plasticity (Hu et al ., 2020), affecting several genes/gene families such as those related to carbohydrate and amino acid metabolism (Liu et al ., 2016; Mazzeo et al ., 2018), hormone production and/or genes related to the circadian clock (Mody et al ., 2020). At the cell level, plant response to HS induces variation of the expression of hundreds of genes.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of tomato response to heat stress at the QTL and transcriptome levels

et al. 2021

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SUMMARY Tomato is a widely cultivated crop, which can grow in many environments. However, temperature above 30°C impairs its reproduction, subsequently impacting fruit yield. We assessed the impact of high‐temperature stress (HS) in two tomato experimental populations, a multi‐parental advanced generation intercross (MAGIC) population and a core‐collection (CC) of small‐fruited tomato accessions. Both populations were evaluated for 11 traits related to yield components, phenology and fruit quality in optimal and HS conditions. HS significantly impacted all traits in both populations, but a few genotypes with stable yield under HS were identified. A plasticity index was computed for each individual to measure the extent of the heat impact for each trait. Quantitative trait loci (QTL) were detected in control and HS conditions as well as for plasticity index. Linkage and genome‐wide association analyses in the MAGIC and CC populations identified a total of 98 and 166 QTLs, respectively. Taking the two populations together, 69 plasticity QTLs (pQTLs) were involved in tomato heat response for 11 traits. The transcriptome changes in the ovary of six genotypes with contrasted responses to HS were studied, and 837 genes differentially expressed according to the conditions were detected. Combined with previous transcriptome studies, these results were used to propose candidate genes for HS response QTLs.

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Section: Introductionmentioning

confidence: 99%

Genetic diversity of tomato response to heat stress at the QTL and transcriptome levels

et al. 2021

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“…In Arabidopsis, considerable evidence links the circadian clock to both biotic and abiotic stress responses [ 12 , 159 , 160 ]. Clock function modulates responses to multiple stresses and, reciprocally, stresses modulate clock function, e.g., [ 161 , 162 , 163 , 164 , 165 , 166 ]. This reciprocal relationship extends to crops: the circadian clock modulates the drought response in poplar [ 167 ] and in B. rapa [ 168 ].…”

Section: Circadian Clock Components As Domestication and Crop Imprmentioning

confidence: 99%

Circadian Clock Components Offer Targets for Crop Domestication and Improvement

McClung

2021

Genes

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During plant domestication and improvement, farmers select for alleles present in wild species that improve performance in new selective environments associated with cultivation and use. The selected alleles become enriched and other alleles depleted in elite cultivars. One important aspect of crop improvement is expansion of the geographic area suitable for cultivation; this frequently includes growth at higher or lower latitudes, requiring the plant to adapt to novel photoperiodic environments. Many crops exhibit photoperiodic control of flowering and altered photoperiodic sensitivity is commonly required for optimal performance at novel latitudes. Alleles of a number of circadian clock genes have been selected for their effects on photoperiodic flowering in multiple crops. The circadian clock coordinates many additional aspects of plant growth, metabolism and physiology, including responses to abiotic and biotic stresses. Many of these clock-regulated processes contribute to plant performance. Examples of selection for altered clock function in tomato demonstrate that with domestication, the phasing of the clock is delayed with respect to the light–dark cycle and the period is lengthened; this modified clock is associated with increased chlorophyll content in long days. These and other data suggest the circadian clock is an attractive target during breeding for crop improvement.

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“…The temporal effects of thermal stress during the plant’s life cycle and the diurnal cycle are critical, and plants have mechanisms to sense peak periods of stress and exhibit appropriate adaptive strategies. Recently, it has been reported that high temperature stress can influence plants’ biological clocks, which affects genes associated with the plant’s time sensing mechanisms [ 265 ]. Wu et al [ 266 ] reported the association of PePIF3a, a positive regulator in plants’ drought and salt stress responses, with circadian rhythms.…”

Section: Mechanisms Associated With Stress Tolerancementioning

confidence: 99%

The Adaptation and Tolerance of Major Cereals and Legumes to Important Abiotic Stresses

Rane

Singh

Kumar

et al. 2021

IJMS

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Abiotic stresses, including drought, extreme temperatures, salinity, and waterlogging, are the major constraints in crop production. These abiotic stresses are likely to be amplified by climate change with varying temporal and spatial dimensions across the globe. The knowledge about the effects of abiotic stressors on major cereal and legume crops is essential for effective management in unfavorable agro-ecologies. These crops are critical components of cropping systems and the daily diets of millions across the globe. Major cereals like rice, wheat, and maize are highly vulnerable to abiotic stresses, while many grain legumes are grown in abiotic stress-prone areas. Despite extensive investigations, abiotic stress tolerance in crop plants is not fully understood. Current insights into the abiotic stress responses of plants have shown the potential to improve crop tolerance to abiotic stresses. Studies aimed at stress tolerance mechanisms have resulted in the elucidation of traits associated with tolerance in plants, in addition to the molecular control of stress-responsive genes. Some of these studies have paved the way for new opportunities to address the molecular basis of stress responses in plants and identify novel traits and associated genes for the genetic improvement of crop plants. The present review examines the responses of crops under abiotic stresses in terms of changes in morphology, physiology, and biochemistry, focusing on major cereals and legume crops. It also explores emerging opportunities to accelerate our efforts to identify desired traits and genes associated with stress tolerance.

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Interaction between the Circadian Clock and Regulators of Heat Stress Responses in Plants

Cited by 17 publications

References 115 publications

Genetic diversity of tomato response to heat stress at the QTL and transcriptome levels

Genetic diversity of tomato response to heat stress at the QTL and transcriptome levels

Circadian Clock Components Offer Targets for Crop Domestication and Improvement

The Adaptation and Tolerance of Major Cereals and Legumes to Important Abiotic Stresses

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