Leaf trait variation is similar among genotypes of<i>Eucalyptus camaldulensis</i>from differing climates and arises in plastic responses to the seasons rather than water availability

Asao, Shinichi; Hayes, Lucy; Aspinwall, Michael J.; Rymer, Paul D.; Blackman, Chris J.; Bryant, Callum; Cullerne, Darren; Egerton, John J. G.; Fan, Yuzhen; Innes, P.; Millar, A. Harvey; Tucker, Josephine; Shah, Shahen; Wright, Ian J.; Yvon‐Durocher, Gabriel; Tissue, David T.; Atkin, Owen K.

doi:10.1111/nph.16579

Cited by 22 publications

(15 citation statements)

References 95 publications

(77 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is probably because techniques for measuring leaf R dark_ O 2 are generally cumbersome and low‐throughput. To overcome this, we used a high‐throughput technique described by Scafaro et al (2017) – and used for wheat (Coast et al, 2019), Arabidopsis thaliana (O'Leary et al, 2017) and Eucalyptus camaldulensis (Asao et al, 2020) – to measure wheat flag leaf R dark_ O 2 at four temperatures over the 20–35°C range. In addition to allowing comparisons of temperature‐normalized (i.e., at 25°C) rates of R dark_ O 2 , this enabled us to test whether the slope and elevation of the short‐term response of leaf R dark_ O 2 in 20 wheat genotypes were affected by growth environment in two experiments.…”

Section: Discussionmentioning

confidence: 99%

Acclimation of leaf photosynthesis and respiration to warming in field‐grown wheat

Coast

Posch

Bramley

et al. 2021

Plant Cell & Environment

Self Cite

View full text Add to dashboard Cite

Climate change and future warming will significantly affect crop yield. The capacity of crops to dynamically adjust physiological processes (i.e., acclimate) to warming might improve overall performance. Understanding and quantifying the degree of acclimation in field crops could ensure better parameterization of crop and Earth System models and predictions of crop performance. We hypothesized that for field‐grown wheat, when measured at a common temperature (25°C), crops grown under warmer conditions would exhibit acclimation, leading to enhanced crop performance and yield. Acclimation was defined as (a) decreased rates of net photosynthesis at 25°C (A25) coupled with lower maximum carboxylation capacity (Vcmax25), (b) reduced leaf dark respiration at 25°C (both in terms of O2 consumption Rdark_O225 and CO2 efflux Rdark_CO225) and (c) lower Rdark_CO225 to Vcmax25 ratio. Field experiments were conducted over two seasons with 20 wheat genotypes, sown at three different planting dates, to test these hypotheses. Leaf‐level CO2‐based traits (A25, Rdark_CO225 and Vcmax25) did not show the classic acclimation responses that we hypothesized; by contrast, the hypothesized changes in Rdark_O2 were observed. These findings have implications for predictive crop models that assume similar temperature response among these physiological processes and for predictions of crop performance in a future warmer world.

show abstract

Section: Discussionmentioning

confidence: 99%

Acclimation of leaf photosynthesis and respiration to warming in field‐grown wheat

Coast

Posch

Bramley

et al. 2021

Plant Cell & Environment

Self Cite

View full text Add to dashboard Cite

show abstract

“…The development of high-throughput, fluorophore-based measurements of respiratory O 2 consumption in plant tissues [134][135][136][137][138] represents a game-changer for studies assessing the potential of variability in leaf respiration to influence crop growth and yields. Using an automated gasphase method, changes in the partial pressure of O 2 through time are measured using a robotic system that quantifies the fluorescent emission from fluorophores that are in contact with air in closed vessels containing plant material [137].…”

Section: Open Accessmentioning

confidence: 99%

“…Using an automated gasphase method, changes in the partial pressure of O 2 through time are measured using a robotic system that quantifies the fluorescent emission from fluorophores that are in contact with air in closed vessels containing plant material [137]. This method has been used to characterize leaf respiration rates in a wide range of plant species, both under controlled environments and in field conditions [134][135][136][137][138]. This approach has also enabled exploration of hyperspectral reflectance as a predictor of leaf respiratory O 2 uptake in nearly 1400 samples of wheat [136].…”

Section: Open Accessmentioning

confidence: 99%

Addressing Research Bottlenecks to Crop Productivity

Reynolds

Atkin

Bennett

et al. 2021

Trends in Plant Science

Self Cite

View full text Add to dashboard Cite

Asymmetry of investment in crop research leads to knowledge gaps and lost opportunities to accelerate genetic gain through identifying new sources and combinations of traits and alleles. On the basis of consultation with scientists from most major seed companies, we identified several research areas with three common features: (i) relatively underrepresented in the literature; (ii) high probability of boosting productivity in a wide range of crops and environments; and (iii) could be researched in 'precompetitive' space, leveraging previous knowledge, and thereby improving models that guide crop breeding and management decisions. Areas identified included research into hormones, recombination, respiration, roots, and source-sink, which, along with new opportunities in phenomics, genomics, and bioinformatics, make it more feasible to explore crop genetic resources and improve breeding strategies. Asymmetry in Crop ResearchResearch into crop growth and adaptation under diverse cultivation scenarios has underpinned global food security, especially since the Green Revolution, during which time the global population has more than doubled. During the same time, the global area of cultivated cereals, which account for more than 70% of total calories consumed by humans, has barely changed while yields have tripled. i These two statistics alone clearly support the impact of crop research on breeding and agronomy as well as effective policy decisions and the agility of farmers to adopt new technologies [1,2]. Nonetheless, the challenges that global agriculture now faces are not just to feed 10+ billion people within a generation, but to do so under a harsher and less predictable climate, and in many cases with less water and declining soil quality [1]. Clearly, research, breeding, and agronomy must be even more effective. HighlightsMore symmetrical investment in crop research will create opportunities to improve crop models, combine new alleles through prebreeding, and suggest novel crop management practices.Consensus among public and private sectors is that more investment is needed to improve understanding of hormone crosstalk, recombination rate, maintenance respiration, root structure and function, and source-sink balance.Greater investment in these areas is expected to benefit a wide range of crops across most environments.

show abstract

“…Most studies quantifying thermal acclimation have compared cool‐developed and warm‐developed plants that were either grown under controlled‐environment conditions, or field conditions that included manipulation of growth T via in situ warming. Moreover, most field‐based studies have been limited to a single site or single species (Atkin et al ., 2000; Bruhn et al ., 2007; Tjoelker et al ., 2009; Dillaway & Kruger, 2011; Way et al ., 2015; Araki et al ., 2017; Asao et al ., 2020), limiting our ability to directly compare thermal acclimation of R in contrasting biomes. This is particularly the case for evergreen ecosystems, for which seasonal data on mature trees are scarce.…”

Section: Introductionmentioning

confidence: 99%

Acclimation of leaf respiration temperature responses across thermally contrasting biomes

et al. 2020

Self Cite

View full text Add to dashboard Cite

Summary Short‐term temperature response curves of leaf dark respiration (R–T) provide insights into a critical process that influences plant net carbon exchange. This includes how respiratory traits acclimate to sustained changes in the environment. Our study analysed 860 high‐resolution R–T (10–70°C range) curves for: (a) 62 evergreen species measured in two contrasting seasons across several field sites/biomes; and (b) 21 species (subset of those sampled in the field) grown in glasshouses at 20°C : 15°C, 25°C : 20°C and 30°C : 25°C, day : night. In the field, across all sites/seasons, variations in R25 (measured at 25°C) and the leaf T where R reached its maximum (Tmax) were explained by growth T (mean air‐T of 30‐d before measurement), solar irradiance and vapour pressure deficit, with growth T having the strongest influence. R25 decreased and Tmax increased with rising growth T across all sites and seasons with the single exception of winter at the cool‐temperate rainforest site where irradiance was low. The glasshouse study confirmed that R25 and Tmax thermally acclimated. Collectively, the results suggest: (1) thermal acclimation of leaf R is common in most biomes; and (2) the high T threshold of respiration dynamically adjusts upward when plants are challenged with warmer and hotter climates.

show abstract

Leaf trait variation is similar among genotypes ofEucalyptus camaldulensisfrom differing climates and arises in plastic responses to the seasons rather than water availability

Abstract: Intraspecific trait variation arises similarly among genotypes of Eucalyptus camaldulensis in response to seasonal change in environment rather than water availability or climate of genotype provenance

Cited by 22 publications

References 95 publications

Acclimation of leaf photosynthesis and respiration to warming in field‐grown wheat

Acclimation of leaf photosynthesis and respiration to warming in field‐grown wheat

Addressing Research Bottlenecks to Crop Productivity

Acclimation of leaf respiration temperature responses across thermally contrasting biomes

Contact Info

Product

Resources

About