Interactions among intrinsic water-use efficiency and climate influence growth and flowering in a common desert shrub

Driscoll, Avery W.; Bitter, Nicholas Q.; Ehleringer, James R.

doi:10.1007/s00442-020-04825-3

Cited by 7 publications

(3 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The greater WUE indicates a lower cost of water loss per carbon assimilated, which is an important water‐saving strategy. This water‐saving strategy in R. stricta is consistent with other stomatal conductance measurements in other C 3 desert species, but the higher g m has not yet been described to our knowledge (Driscoll et al, 2020; Driscoll et al, 2021; Kannenberg et al, 2021; Ogle et al, 2012).…”

Section: Discussionsupporting

confidence: 91%

Increased activity of core photorespiratory enzymes and CO₂ transfer conductances are associated with higher and more optimal photosynthetic rates under elevated temperatures in the extremophile Rhazya stricta

Gregory,

Roze,

Walker

2023

Plant Cell & Environment

View full text Add to dashboard Cite

Increase photorespiration and optimising intrinsic water use efficiency are unique challenges to photosynthetic carbon fixation at elevated temperatures. To determine how plants can adapt to facilitate high rates of photorespiration at elevated temperatures while also maintaining water‐use efficiency, we performed in‐depth gas exchange and biochemical assays of the C3 extremophile, Rhazya stricta. These results demonstrate that R. stricta supports higher rates of photorespiration under elevated temperatures and that these higher rates of photorespiration correlate with increased activity of key photorespiratory enzymes; phosphoglycolate phosphatase and catalase. The increased photorespiratory enzyme activities may increase the overall capacity of photorespiration by reducing enzymatic bottlenecks and allowing minimal inhibitor accumulation under high photorespiratory rates. Additionally, we found the CO2 transfer conductances (stomatal and mesophyll) are re‐allocated to increase the water‐use efficiency in R. stricta but not necessarily the photosynthetic response to temperature. These results suggest important adaptive strategies in R. stricta that maintain photosynthetic rates under elevated temperatures with optimal water loss. The strategies found in R. stricta may inform breeding and engineering efforts in other C3 species to improve photosynthetic efficiency at high temperatures.

show abstract

Section: Discussionsupporting

confidence: 91%

Increased activity of core photorespiratory enzymes and CO₂ transfer conductances are associated with higher and more optimal photosynthetic rates under elevated temperatures in the extremophile Rhazya stricta

Gregory,

Roze,

Walker

2023

Plant Cell & Environment

View full text Add to dashboard Cite

show abstract

“…For example, Carroll et al (2021) find that intense drought decreased aboveground net primary productivity in different grasslands more than chronic drought and that wetter systems experienced a greater decrease in belowground net primary productivity under intense drought. In addition, Driscoll et al (2021) find little evidence that "conservative" water use strategies benefitted fitness of Encelia farinosa (brittlebrush) during dry years nor that "aggressive" water use was universally beneficial during wet years. Goud et al (2021) note that plant water use strategies are an important mechanism for maintaining biodiversity in the face of fluctuating hydrologic conditions.…”

Section: Plant and Ecosystem Ecologymentioning

confidence: 95%

Preface: honoring the career of Russell K. Monson

2021

View full text Add to dashboard Cite

“…As a result, the shading effect of neighboring trees does not decrease but rather increases the WUE of late-successional trees. We believe that the improved WUE of late-successional trees can, to some extent, compensate for the impact of neighboring tree interference on their growth, as an increase in WUE has positive effects on tree growth [65,66].…”

Section: Response Of Leaf Functional Traits To Neighboring Competitionmentioning

confidence: 97%

Differences in Response of Tree Species at Different Succession Stages to Neighborhood Competition

Zeng,

Li,

Peng

et al. 2024

Forests

View full text Add to dashboard Cite

Neighborhood competition influences tree growth, which can affect species composition and community succession. However, there is a lack of understanding regarding how dominant tree species at different successional stages of forest communities respond in terms of crown architecture and functional traits during their growth process to neighborhood competition. In this study, we analyzed the responses of average annual basal area increment (BAI), crown architecture, and leaf functional traits of early-successional species (Cunninghamia lanceolata and Pinus massoniana), transitional species (Alniphyllum fortunei and Choerospondias axillaris), and late-successional species (Elaeocarpus duclouxii and Castanopsis carlesii) to neighbor competition in a secondary evergreen broad-leaved forest. We found that the BAI of all species is negatively correlated with competition intensity. Notably, early-successional and transitional species exhibited a more rapid decline in growth rates compared to late-successional species in response to increased competition. Among these tree species, the response of crown structure to neighbor competition exhibited variation. Early-successional and transitional species displayed a negative correlation between the competition index and crown area (CA)/diameter, while a positive correlation emerged between the lowest branch height (LBH)/height. Conversely, late-successional species followed the opposite trend. In terms of leaf functional traits, specific leaf area (SLA) showed heightened sensitivity to neighborhood competition, with a positive correlation between SLA of all tree species and the competition index. Furthermore, water use efficiency (WUE) demonstrated negative correlations with the competition index in early-successional and transitional trees, while a positive correlation emerged with late-successional trees. These findings suggest that early-successional and transitional trees prioritize vertical canopy growth, whereas late-successional trees tend to favor horizontal canopy expansion in response to neighboring competition. Additionally, early-successional and transitional trees experience more significant suppression of radial growth rate. Our research contributes to a deeper understanding of the underlying mechanisms driving changes in species composition and community succession.

show abstract

Interactions among intrinsic water-use efficiency and climate influence growth and flowering in a common desert shrub

Cited by 7 publications

References 66 publications

Increased activity of core photorespiratory enzymes and CO₂ transfer conductances are associated with higher and more optimal photosynthetic rates under elevated temperatures in the extremophile Rhazya stricta

Increased activity of core photorespiratory enzymes and CO₂ transfer conductances are associated with higher and more optimal photosynthetic rates under elevated temperatures in the extremophile Rhazya stricta

Preface: honoring the career of Russell K. Monson

Differences in Response of Tree Species at Different Succession Stages to Neighborhood Competition

Contact Info

Product

Resources

About

Interactions among intrinsic water-use efficiency and climate influence growth and flowering in a common desert shrub

Cited by 7 publications

References 66 publications

Increased activity of core photorespiratory enzymes and CO2 transfer conductances are associated with higher and more optimal photosynthetic rates under elevated temperatures in the extremophile Rhazya stricta

Increased activity of core photorespiratory enzymes and CO2 transfer conductances are associated with higher and more optimal photosynthetic rates under elevated temperatures in the extremophile Rhazya stricta

Preface: honoring the career of Russell K. Monson

Differences in Response of Tree Species at Different Succession Stages to Neighborhood Competition

Contact Info

Product

Resources

About

Increased activity of core photorespiratory enzymes and CO₂ transfer conductances are associated with higher and more optimal photosynthetic rates under elevated temperatures in the extremophile Rhazya stricta

Increased activity of core photorespiratory enzymes and CO₂ transfer conductances are associated with higher and more optimal photosynthetic rates under elevated temperatures in the extremophile Rhazya stricta