Heat priming effects on anthesis heat stress in wheat cultivars (Triticum aestivum L.) with contrasting tolerance to heat stress

Mendanha, Thayna; Rosenqvist, Eva; Hyldgaard, Benita; Ottosen, Carl‐Otto

doi:10.1016/j.plaphy.2018.09.002

Cited by 25 publications

(24 citation statements)

References 36 publications

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“…As post-stress resembled prestress conditions, plants did not progress into a new developmental stage during priming and therefore morphological costs were avoided. however, in our previous study, "Paragon" plants did not withstand day/night temperatures of 36/32°C during heat stress (Mendanha et al, 2018); therefore, lower temperatures were used to impose heat stress in the current study.…”

Section: F I G U R Ementioning

confidence: 93%

“…The cultivars studied in this experiment are commercial cultivars from two different origins. "Gladius" is an Australian cultivar adapted to more heat and drought prone climates (Fleury, Kuchel, & Langridge, 2010), while "Paragon" is an UK cultivar bred to a cool and temperate climate (Mendanha, Rosenqvist, Hyldgaard, & Ottosen, 2018;Sikder et al, 2015).…”

Section: Plant Materialsmentioning

confidence: 99%

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Drought priming effects on alleviating the photosynthetic limitations of wheat cultivars (Triticum aestivum L.) with contrasting tolerance to abiotic stresses

Mendanha

Rosenqvist

Hyldgaard

et al. 2020

J Agronomy Crop Science

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Abiotic stress tolerance in plants is said to be induced by pre-stress events (priming) during the vegetative phase. We aimed to test whether drought priming could improve the heat and drought tolerance in wheat cultivars. Two wheat cultivars "Gladius" and "Paragon" were grown in a fully controlled gravimetric platform and subjected to either no stress or two drought cycles during the tillering stage. At anthesis, both batches were either subjected to high temperature stress, drought stress or kept as control. No alleviation of grain yield reduction due to priming was observed. Higher CO 2 assimilation rates were achieved due to priming under drought stress. Yield results showed that priming was not damage cumulative to wheat. Priming was responsible to alleviated biochemical photosynthetic limitations under drought stress and sustained photochemical utilization under heat stress in "Paragon." Priming as a strategy in abiotic stress alleviation was better evidenced in the stress susceptible cultivar "Paragon" than tolerant cultivar "Gladius"; therefore, the type of response to priming appears to be cultivar dependable, and thus phenotypical variation should be expected when studying the effects of abiotic priming.

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Section: F I G U R Ementioning

confidence: 93%

Section: Plant Materialsmentioning

confidence: 99%

Drought priming effects on alleviating the photosynthetic limitations of wheat cultivars (Triticum aestivum L.) with contrasting tolerance to abiotic stresses

Mendanha

Rosenqvist

Hyldgaard

et al. 2020

J Agronomy Crop Science

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“…This implies that photo-assimilate supply and the quantity of reserved assimilate stored in the vegetative tissue are key determinants of floret formation and subsequent grain (sink) development under heat stress [ 118 , 119 ]. Although ample evidence exists regarding the negative impact of heat stress on crop yields [ 120 , 121 , 122 ], little is known about the source–sink metabolite dynamics and crop-yield interaction [ 123 ]. More recently, Impa et al [ 124 ] examined the metabolic changes in six winter wheat genotypes by investigating the post-heading high night temperature (HNT) effect on carbon balance, sink–source metabolic changes, and other yield-related traits relative to the control experiment (at 15 °C minimum night temperature).…”

Section: Influence Of Environmental Factors On Photo-assimilate Transportmentioning

confidence: 99%

Sucrose Utilization for Improved Crop Yields: A Review Article

Aluko

Wang

et al. 2021

IJMS

104

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Photosynthetic carbon converted to sucrose is vital for plant growth. Sucrose acts as a signaling molecule and a primary energy source that coordinates the source and sink development. Alteration in source–sink balance halts the physiological and developmental processes of plants, since plant growth is mostly triggered when the primary assimilates in the source leaf balance with the metabolic needs of the heterotrophic sinks. To measure up with the sink organ’s metabolic needs, the improvement of photosynthetic carbon to synthesis sucrose, its remobilization, and utilization at the sink level becomes imperative. However, environmental cues that influence sucrose balance within these plant organs, limiting positive yield prospects, have also been a rising issue over the past few decades. Thus, this review discusses strategies to improve photosynthetic carbon assimilation, the pathways actively involved in the transport of sucrose from source to sink organs, and their utilization at the sink organ. We further emphasize the impact of various environmental cues on sucrose transport and utilization, and the strategic yield improvement approaches under such conditions.

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“…The grain number decreased by 41% and the grain dry weight decreased by 40% due to heat stress applied at the DR+AN stages, similar to the results for heat stress at anthesis alone. Mendanha et al [ 28 ] also did not obtain convincing results about the priming effect of heat stress at anthesis. One of the varieties studied did not show differences in the assimilation rate and yield parameters between the primed and nonprimed treatments.…”

Section: Introductionmentioning

confidence: 99%

“…Single and repeated heat stress was studied at different developmental phases in two independent experiments under controlled conditions. The uniqueness of our project was that a larger number of wheat varieties were tested, in contrast to other experiments where only a few varieties were examined [ 13 , 23 – 26 , 28 , 29 ]. In both heat stress experiments, 51 winter wheat varieties of different geographic origins were investigated by measuring various photosynthetic parameters and yield-related traits under controlled environmental conditions in the greenhouse and phytotron facilities of Martonvásár.…”

Section: Introductionmentioning

confidence: 99%

Single versus repeated heat stress in wheat: What are the consequences in different developmental phases?

et al. 2021

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With a possible reference to heat priming and to characterize the extent and variation in the heat stress responses in wheat, the effects of single vs. repeated heat stresses were examined by measuring the changes in morphological and grain yield-related traits and photosynthetic parameters. To achieve these objectives, 51 winter wheat cultivars of various geographic origins were included in two independent experiments covering different phenological stages. In Experiment I, a single heat stress event was applied at stem elongation (SE) and booting (B), and the repeated heat stress was applied at both of these stages (SE+B). In Experiment II, the single heat stress was applied at stem elongation (SE) and full heading (CH), while the repeated heat stress was applied at both stages (SE+CH). While genotype was a more important factor for determining the morphological and yield-related traits, it was the treatment effect that mostly influenced the photosynthetic parameters, with the exception of the chlorophyll content. The heading stage was more sensitive to heat stress than the booting stage, which was primarily due to the larger decrease in the average seed number. The importance of biomass in contributing to grain yield intensified with the heat stress treatments. There was a large variation between the wheat cultivars not only in yielding abilities under control conditions but also in sensitivities to the various heat stresses, based on which 7 distinct groups with specific response profiles could be identified at a highly significant level. The 7 wheat groups were also characterized by their reaction patterns of different magnitudes and directions in their responses to single vs. repeated heat stresses, which depended on the phenological phases during the second cycle of heat stress. The possible association between these findings and heat priming is discussed.

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Heat priming effects on anthesis heat stress in wheat cultivars (Triticum aestivum L.) with contrasting tolerance to heat stress

Cited by 25 publications

References 36 publications

Drought priming effects on alleviating the photosynthetic limitations of wheat cultivars (Triticum aestivum L.) with contrasting tolerance to abiotic stresses

Drought priming effects on alleviating the photosynthetic limitations of wheat cultivars (Triticum aestivum L.) with contrasting tolerance to abiotic stresses

Sucrose Utilization for Improved Crop Yields: A Review Article

Single versus repeated heat stress in wheat: What are the consequences in different developmental phases?

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