Differential physiological and metabolic responses in young and fully expanded leaves of Aristotelia chilensis plants subjected to drought stress

González‐Villagra, Jorge; Omena-García, Rebeca P.; Rodrigues-Salvador, Acácio; Nunes‐Nesi, Adriano; Cohen, Jerry D.; Reyes‐Díaz, Marjorie

doi:10.1016/j.envexpbot.2022.104814

Cited by 5 publications

(3 citation statements)

References 90 publications

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“…involves selecting "typical" sunlit, fully exposed and mature leaves sampled from replicate plants of given species, often growing in close proximity. This approach is justified to achieve accuracy and precision in the determination of species trait means for exposed leaves with the highest level of photosynthetic activity (e.g., Albert et al, 2011;González-Villagra et al, 2022;Jones & Turner, 1980;Novoplansky et al, 1989;Watson & Casper, 1984). Here, we defined a "reference" (Marks, 2007;Siefert et al, 2015;Zhou et al, 2022;but see Herrera, 2017).…”

Section: Notementioning

confidence: 99%

“…One reason that many leaf‐level ecophysiological traits have not been assessed for ITV is that the typical determination of species mean trait values involves selecting “typical” sunlit, fully exposed and mature leaves sampled from replicate plants of given species, often growing in close proximity. This approach is justified to achieve accuracy and precision in the determination of species trait means for exposed leaves with the highest level of photosynthetic activity (e.g., Albert et al, 2011; González‐Villagra et al, 2022; Jones & Turner, 1980; Novoplansky et al, 1989; Watson & Casper, 1984). Here, we defined a “reference” ITV (ITV ref ) at this scale of typical measurement, that is, representing the variation among sun leaves of replicate plants in similar growing conditions.…”

Section: Introductionmentioning

confidence: 99%

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Low baseline intraspecific variation in leaf pressure‐volume traits: Biophysical basis and implications for spectroscopic sensing

Browne

Bartlett

Henry

et al. 2023

Physiologia Plantarum

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Intra‐specific trait variation (ITV) plays a role in processes at a wide range of scales from organs to ecosystems across climate gradients. Yet, ITV remains rarely quantified for many ecophysiological traits typically assessed for species means, such as pressure volume (PV) curve parameters including osmotic potential at full turgor and modulus of elasticity, which are important in plant water relations. We defined a baseline “reference ITV” (ITVref) as the variation among fully exposed, mature sun leaves of replicate individuals of a given species grown in similar, well‐watered conditions, representing the conservative sampling design commonly used for species‐level ecophysiological traits. We hypothesized that PV parameters would show low ITVref relative to other leaf morphological traits, and that their intraspecific relationships would be similar to those previously established across species and proposed to arise from biophysical constraints. In a database of novel and published PV curves and additional leaf structural traits for 50 diverse species, we found low ITVref for PV parameters relative to other morphological traits, and strong intraspecific relationships among PV traits. Simulation modeling showed that conservative ITVref enables the use of species‐mean PV parameters for scaling up from spectroscopic measurements of leaf water content to enable sensing of leaf water potential.

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Section: Notementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low baseline intraspecific variation in leaf pressure‐volume traits: Biophysical basis and implications for spectroscopic sensing

Browne

Bartlett

Henry

et al. 2023

Physiologia Plantarum

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show abstract

“…The importance of protein autophagy under carbon starvation in the release of BCAAs and lysine is also indicated by the induction of the whole catabolic pathway of BCAAs and lysine that in Arabidopsis thaliana involves four specific enzymes: BCAA transaminase 2 (BCAAT), branched chain α-keto acid dehydrogenase complex (BCKDH), isovalerylCoA dehydrogenase (IVDH) and 2-hydroxyglutarate dehydrogenase, the last two of which serve as electron donors to the mitochondrial ubiquinol pool via ETF, also induced by carbon starvation [1,[28][29][30][31][32][33][34] (Figure 1A). Nevertheless, it should be mentioned that BCAA de novo synthesis is induced under drought in different land plants [35,36].…”

Section: Amino Acid Degradation Provides Energy For Enduring Abiotic ...mentioning

confidence: 99%

Proline, Cysteine and Branched-Chain Amino Acids in Abiotic Stress Response of Land Plants and Microalgae

Ingrisano,

Tosato,

Trost

et al. 2023

Plants

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Proteinogenic amino acids are the building blocks of protein, and plants synthesize all of them. In addition to their importance in plant growth and development, growing evidence underlines the central role played by amino acids and their derivatives in regulating several pathways involved in biotic and abiotic stress responses. In the present review, we illustrate (i) the role of amino acids as an energy source capable of replacing sugars as electron donors to the mitochondrial electron transport chain and (ii) the role of amino acids as precursors of osmolytes as well as (iii) precursors of secondary metabolites. Among the amino acids involved in drought stress response, proline and cysteine play a special role. Besides the large proline accumulation occurring in response to drought stress, proline can export reducing equivalents to sink tissues and organs, and the production of H2S deriving from the metabolism of cysteine can mediate post-translational modifications that target protein cysteines themselves. Although our general understanding of microalgae stress physiology is still fragmentary, a general overview of how unicellular photosynthetic organisms deal with salt stress is also provided because of the growing interest in microalgae in applied sciences.

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Age-related differences in physiological and metabolic responses of Pleione aurita (Orchidaceae) pseudobulbs to drought stress and recovery

Zhang

Dong

Zhang

et al. 2023

Plant Physiology and Biochemistry

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Differential physiological and metabolic responses in young and fully expanded leaves of Aristotelia chilensis plants subjected to drought stress

Cited by 5 publications

References 90 publications

Low baseline intraspecific variation in leaf pressure‐volume traits: Biophysical basis and implications for spectroscopic sensing

Low baseline intraspecific variation in leaf pressure‐volume traits: Biophysical basis and implications for spectroscopic sensing

Proline, Cysteine and Branched-Chain Amino Acids in Abiotic Stress Response of Land Plants and Microalgae

Age-related differences in physiological and metabolic responses of Pleione aurita (Orchidaceae) pseudobulbs to drought stress and recovery

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