Panagiota Bresta

Panagiota Bresta
Agricultural University of Athens · Faculty of Crop Science (CP)

MSc, PhD

About

18
Publications
5,730
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464
Citations
Citations since 2016
15 Research Items
438 Citations
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140

Publications

Publications (18)
Article
In Mediterranean type environments large variability in grain plumpness, defined as the proportion of grains retained over a 2.5 mm sieve, is a critical source of uncertainty for brewers and farmers. Understanding the mechanisms that regulate grain size under stressful environments will assist breeders to promote stability and improve grain size. U...
Article
Based on a previous work, exposure to limited water availability induced changes in cell wall composition of mature Helianthus annuus L. leaves that affected mesophyll conductance to CO2 diffusion (gm). However, it is unclear on which timescale these cell wall composition changes occur. Here, we tested H. annuus subjected to control (i.e., water av...
Article
Full-text available
Leaves have evolved to effectively harvest light, and, in parallel, to balance photosynthetic CO2 assimilation with water losses. At times, leaves must operate under light limiting conditions while at other instances (temporally distant or even within seconds), the same leaves must modulate light capture to avoid photoinhibition and achieve a unifo...
Article
Full-text available
Carbon-calcium-inclusions (CCaIs) either as calcium oxalate crystals (CaOx) or amorphous calcium carbonate cystoliths are spread among most photosynthetic organisms. They represent dynamic structures with a significant construction cost and their appearance during evolution indicates an ancient origin. Both types of inclusions share some similar fu...
Article
Full-text available
Calcium oxalate (CaOx) crystals are widespread among plant species. Their functions are not yet completely understood; however, they can provide tolerance against multiple environmental stress factors. Recent evidence suggested that CaOx crystals function as carbon reservoirs since its decomposition provides CO2 that may be used as carbon source fo...
Article
Full-text available
Water deprivation affects photosynthesis, leaf anatomy and cell wall composition. Although the former effects have been widely studied, little is known regarding those changes in cell wall major (cellulose, hemicelluloses, pectin and lignin) and minor (cell wall bound phenolics) compounds in plants acclimated to short- and long-term water deprivati...
Article
The carbon‐calcium‐inclusions (CCaIs) either as calcium oxalate crystals (CaOx) or amorphous calcium carbonate cystoliths are spread among most photosynthetic organisms. They represent dynamic structures with a significant construction cost and their appearance during evolution indicates an ancient origin. Both types of inclusions share some simila...
Article
Full-text available
As superficial structures, non-glandular trichomes, protect plant organs against multiple biotic and abiotic stresses. The protective and defensive roles of these epidermal appendages are crucial to developing organs and can be attributed to the excellent combination of suitable structural traits and chemical reinforcement in the form of phenolic c...
Article
Full-text available
The recently reported 'alarm photosynthesis' acts as a biochemical appendance that assimilates CO2 deriving from decomposition of calcium oxalate crystals. This study examines whether CaCO3 cystoliths could also serve as CO2 pools fulfilling a similar role. Shoots of Parietaria judaica were subjected to carbon starvation, abscisic acid (ABA) or bic...
Article
Mesophyll conductance (gm), the CO2 diffusion from substomatal cavities to the carboxylation sites in the chloroplasts, is a highly complex trait driving photosynthesis (AN). However, little is known concerning the mechanisms allowing its dynamic regulation. The apoplast is considered as a “key information bridge” between the environment and the ce...
Article
In dioecious species, sex-related adaptive strategies probably influenced by both natural and sexual selection, allow each sex to meet the specific resource demands associated with reproduction. Therefore differences in ecophysiological traits between males and females may also rely on innate differences in secondary sex traits (sex-specific adapta...
Article
Full-text available
In many plant species, carbon-calcium inclusion (calcium oxalate crystals or cystoliths containing calcium carbonate) formation is a fundamental part of their physiology even necessary for normal growth and development. Despite the long-standing studies on carbon-calcium inclusions, the alterations in their properties during leaf development and th...
Article
Under drought conditions the growth and survival of a plant depend on its adaptive characteristics and acclimation ability. Adaptation refers to inherent morpho-physiological characters providing protection against water losses. Acclimation, however, is a special case of phenotypic plasticity: environment-dependent phenotypic expression resulting t...
Article
Land plants face the perpetual dilemma of using atmospheric carbon dioxide for photosynthesis and losing water vapours, or saving water and reducing photosynthesis and thus growth. The reason behind this dilemma is that this simultaneous exchange of gases is accomplished through the same minute pores on leaf surfaces, called stomata. In a recent st...
Article
Full-text available
Calcium oxalate crystals are widespread among animals and plants. In land plants, crystals often reach high amounts - up to 80% of dry biomass. They are formed within specific cells, and their accumulation constitutes a normal activity rather than a pathological symptom, as occurs in animals. Despite their ubiquity, our knowledge on the formation a...
Article
Full-text available
Phenolic compounds are the most commonly studied of all secondary metabolites because of their significant protective-defensive roles and their significant concentration in plant tissues. However, there has been little study on relationships between gas exchange parameters and the concentration of leaf phenolic compounds (total phenolics (TP) and c...
Article
Full-text available
Immediate leaf functional responses to drought, such as stomatal closure and photosynthetic rate reduction, are already known from short-term studies. We tested the hypothesis that long-term acclimation of leaves to drought includes hydraulic and stomatal anatomical changes and that gas exchange and nitrogen allocation patterns are inevitably adjus...

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Projects

Project (1)
Project
Identification of critical leaf traits leading to drought tolerance Inter- and intraspecific assessment of leaf plasticity under long-term drought conditions