Relative contribution of stomatal parameters in influencing WUE among rice mutants differing in leaf mass area

Reddy, Sowmya Handenahally; Costa, Maria Vera Jesus Da; Kambalimath, Sumanth Kumar; Mavinahalli, P. Rajanna; Raveendran, M.; Chinnusamy, Viswanathan; Sevanthi, Amitha Mithra; Neelamraju, Sarla; Krishnan, S. Gopala; Singh, Ashok Kumar; Singh, Nagendra; Sharma, Rameshwar; Niranjana, Pathappa; Sreeman, Sheshshayee

doi:10.1007/s40502-020-00537-1

Cited by 4 publications

(2 citation statements)

References 43 publications

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“…The leaves’ architecture can influence the WUE i due to variable mesophyll porosity and SD to intercellular airspace volume ratio in coniferous tree species ( Trueba et al 2022 ), and cell wall properties such as cell wall thickness ( T cw ) might influence g m and thus WUE i ( Flexas et al 2021 ; Pathare et al 2023 ). Mutant rice populations with higher leaf mass per area (LMA) showed improved whole-plant WUE bio under both control and water-limited conditions ( Reddy et al 2020 a ). In the study by Horike et al (2021) , WUE i of five shrub species covaried with LMA under drought stress.…”

Section: Leaf Anatomy and Plant Crown Architecturementioning

confidence: 99%

Leaf physiological and morphological constraints of water-use efficiency in C3 plants

et al. 2023

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The increasing evaporative demand due to climate change will significantly affect the balance of carbon assimilation and water losses of plants worldwide. The development of crop varieties with improved water use efficiency (WUE) will be critical for adapting agricultural strategies under predicted future climate. This review aims to summarize the most important leaf morpho-physiological constraints of WUE in C3 plants and identify gaps in knowledge. From the carbon gain side of the WUE, the discussed parameters are mesophyll conductance, carboxylation efficiency and respiratory losses. The traits and parameters affecting the waterside of WUE balance discussed in this review are stomatal size and density, stomatal control and residual water losses (cuticular and bark conductance), nocturnal conductance and leaf hydraulic conductance. In addition, we discussed the impact of leaf anatomy and crown architecture on both the carbon gain and water loss components of WUE. There are multiple possible targets for future development in understanding sources of WUE variability in plants. We identified residual water losses and respiratory carbon losses as the greatest knowledge gaps of whole plant WUE assessments. Moreover, the impact of trichomes, leaf hydraulic conductance and canopy structure on plants’ WUE is still not well understood. The development of a multi-trait approach is urgently needed for a better understanding of WUE dynamics and optimization.

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Section: Leaf Anatomy and Plant Crown Architecturementioning

confidence: 99%

Leaf physiological and morphological constraints of water-use efficiency in C3 plants

et al. 2023

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“…SLA decreases in plants with thicker leaves (Vile et al 2005;Homeier et al 2021). Multiple studies have found that SLA is negatively related to iWUE and δ 13 C in crops (Reddy et al 2020a;Reddy et al 2020b), shrubs (Horike et al 2021) and tree species (Ge et al 2022). The correlation between SLA and iWUE might be caused by anatomical differences that affect the mesophyll tissue surface area and mesophyll conductance (Baird et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Linking stomatal size and density to water use efficiency and leaf carbon isotope ratio in juvenile and mature trees

Petrík,

Petek-Petrík,

Lamarque

et al. 2024

Preprint

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Water-use efficiency (WUE) is affected by multiple leaf traits, including stomatal morphology. However, the impact of stomatal morphology on WUE across different ontogenetic stages of tree species is not well-documented. Here, we investigated the relationship between stomatal morphology intrinsic water-use efficiency (iWUE=A/gs) and leaf carbon isotope ratio (δ13C). We sampled 190 individuals including juvenile and mature trees belonging to 18 temperate broadleaved tree species and 9 genera. We measured guard cell length (GCL), stomatal density (SD), specific leaf area (SLA), gas-exchange, iWUE and leaf δ13C as a proxy for long-term WUE. Leaf δ13C correlated positively with iWUE for both juvenile and mature trees. Across species, GCL showed a negative and SD a positive effect on iWUE and leaf δ13C of both juvenile and mature trees. Within species, however, only GCL was significantly associated with iWUE and leaf δ13C. Pioneer species (Populus,Prunus,Betula) showed a significantly lower leaf δ13C than climax forest species (Fagus,Quercus,Tilia), but the differentiation was not clear for iWUE. We conclude that GCL and SD can be considered as functional morphological traits impacting the iWUE and leaf δ13C of trees, highlighting their potential for rapid phenotyping approaches in ecological studies.

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Relevance of acquired tolerance traits and root length in determining spikelet fertility and yield in rice

Lekshmy¹,

Vijayaraghavareddy²,

Nanaiah³

et al. 2022

Plant Physiol. Rep.

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Relative contribution of stomatal parameters in influencing WUE among rice mutants differing in leaf mass area

Cited by 4 publications

References 43 publications

Leaf physiological and morphological constraints of water-use efficiency in C3 plants

Leaf physiological and morphological constraints of water-use efficiency in C3 plants

Linking stomatal size and density to water use efficiency and leaf carbon isotope ratio in juvenile and mature trees

Relevance of acquired tolerance traits and root length in determining spikelet fertility and yield in rice

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