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Stomata, the tiny pores on leaf surface, are the gateways for CO2 uptake during photosynthesis as well as water loss in transpiration. Further, plants use stomatal closure as a defensive response, often triggered by elicitors, to prevent the entry of pathogens. The guard cells are popular model systems to study the signalling mechanism in plant cells. The messengers that mediate closure upon perception of elicitors or microbe associated molecular patterns (MAMPs) are quite similar to those during ABA effects. These components include reactive oxygen species (ROS), nitric oxide (NO), cytosolic pH and intracellular Ca2+. The main components are ROS, NO and cytosolic free Ca2+. The list extends to others, such as G-proteins, protein phosphatases, protein kinases, phospholipids and ion channels. The sequence of these signalling components and their interaction during stomatal signalling are complex and quite interesting. The present e-Book provides a set of authoritative articles from ‘Special Research Topic’ on selected areas of stomatal guard cells. In the first set of two articles, an overview of ABA and MAMPs as signals is presented. The next set of 4 articles, emphasize the role of ROS, NO, Ca2+ as well as pH, as secondary messengers. The next group of 3 articles highlight the recent advances on post-translational modification of guard cell proteins, with emphasis on 14-3-3 proteins and MAPK cascades. The last article described the method to isolate epidermis of grass species and monitor stomatal responses to different signals. Our e-Book is a valuable and excellent source of information for all those interested in guard cell function as well as signal transduction in plant cells.

ABA --- Methyl Jasmonate --- Reactive Oxygen Species --- innate immunity --- Proteomics --- Epidermis --- Nitric Oxide --- Protein phosphorylation --- secondary messengers --- elicitors

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Stomata, the tiny pores on leaf surface, are the gateways for CO2 uptake during photosynthesis as well as water loss in transpiration. Further, plants use stomatal closure as a defensive response, often triggered by elicitors, to prevent the entry of pathogens. The guard cells are popular model systems to study the signalling mechanism in plant cells. The messengers that mediate closure upon perception of elicitors or microbe associated molecular patterns (MAMPs) are quite similar to those during ABA effects. These components include reactive oxygen species (ROS), nitric oxide (NO), cytosolic pH and intracellular Ca2+. The main components are ROS, NO and cytosolic free Ca2+. The list extends to others, such as G-proteins, protein phosphatases, protein kinases, phospholipids and ion channels. The sequence of these signalling components and their interaction during stomatal signalling are complex and quite interesting. The present e-Book provides a set of authoritative articles from ‘Special Research Topic’ on selected areas of stomatal guard cells. In the first set of two articles, an overview of ABA and MAMPs as signals is presented. The next set of 4 articles, emphasize the role of ROS, NO, Ca2+ as well as pH, as secondary messengers. The next group of 3 articles highlight the recent advances on post-translational modification of guard cell proteins, with emphasis on 14-3-3 proteins and MAPK cascades. The last article described the method to isolate epidermis of grass species and monitor stomatal responses to different signals. Our e-Book is a valuable and excellent source of information for all those interested in guard cell function as well as signal transduction in plant cells.

ABA --- Methyl Jasmonate --- Reactive Oxygen Species --- innate immunity --- Proteomics --- Epidermis --- Nitric Oxide --- Protein phosphorylation --- secondary messengers --- elicitors

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Carotenoids are uniquely functional polyene pigments that are ubiquitous in nature; aside from being responsible for the color of a wide variety of vegetables, interest has been focused on food carotenoids due to their likely health benefits. This Special Issue, “Carotenoids in Fresh and Processed Food: Between Biosynthesis and Degradation”, consists of five peer-reviewed papers that cover a numerous new insights on the chemistry of carotenoids together with some observations related to their protection from photodegradation. Moreover, other considerations about their biosynthesis and influencing parameters in fresh food are included.

HPLC-DAD-MS --- 5,6-/5,8-epoxyxanthophylls --- elicitors --- pheophytins --- chlorophylls --- vineyard aspect --- vineyard topography --- vine vigor --- heat accumulation --- temperature --- photosynthetically active radiation --- lutein --- neoxanthin --- β-carotene --- carotenoids --- traditional food --- light-emitting diodes --- pulsed electric field --- zeaxanthin --- flavonoid --- carotenoid --- salicylic acid --- methyl jasmonate --- citrus fruit --- juice sacs --- eugenol --- photoprotection --- provitamin A --- n/a

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This book presents the advances in plant salinity stress and tolerance, including mechanistic insights revealed using powerful molecular tools and multi-omics and gene functions studied by genetic engineering and advanced biotechnological methods. Additionally, the use of plant growth-promoting rhizobacteria in the improvement of plant salinity tolerance and the underlying mechanisms and progress in breeding for salinity-tolerant rice are comprehensively discussed. Clearly, the published data have contributed to the significant progress in expanding our knowledge in the field of plant salinity stress and the results are valuable in developing salinity-stress-tolerant crops; in benefiting their quality and productivity; and eventually, in supporting the sustainability of the world food supply.

watermelon --- salt stress --- RNA-seq --- amino acids --- endocytosis --- Arabidopsis thaliana --- halophyte --- high-affinity potassium transporter (HKT) --- Na+ transporter --- salt tolerance --- Sporobolus virginicus --- aquaporins --- barley --- ion transport --- oocytes --- plasma membrane intrinsic proteins (PIPs) --- GmbZIP15 --- transcription factor --- drought stress --- soybean --- biotechnology breeding --- high-throughput sequencing --- QTLs --- rice --- halophytic wild barley --- salinity --- osmotic stress --- metabolome --- transcriptome --- ionome --- stress adaptation --- Hordeum marinum --- aquaporin --- Zygophyllum xanthoxylum --- plant growth --- abiotic stress --- sensing --- signaling --- transcription factors --- osmoregulation --- antioxidation --- ion homeostasis --- jasmonates --- jasmonate signaling pathway --- crosstalk --- exogenous jasmonate applications --- GWAS --- PGPR --- ACC deaminase --- seed priming --- IAA --- cell wall integrity --- cell wall sensor --- LRXs --- CrRLK1Ls --- Millettia pinnata --- calmodulin-like --- heterologous expression --- halophiles --- plant growth-promoting rhizobacteria (PGPR) --- RNA sequence analysis (RNA-seq) --- quantitative reverse transcriptase PCR (qRT-PCR) --- n/a

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Phytochemistry. Phytobiochemistry --- Plant physiology. Plant biophysics --- Substance de croissance végétale --- plant growth substances --- Acide gibbérellique --- Gibberellic acid --- Cytokine --- Cytokines --- ABA --- Éthylène --- Ethylene --- Extraction --- Purification --- Classification --- classification --- Fonction physiologique --- physiological functions --- Biosynthèse --- Biosynthesis --- Semence --- Seed --- Germination --- Multiplication végétative --- Vegetative propagation --- Système racinaire --- Root systems --- Dormance --- Dormancy --- Cycle de développement --- life cycle --- Floraison --- Flowering --- Photosynthèse --- Photosynthesis --- Désherbage --- Weed control --- Jasmonate --- Jasmonates --- Auxine --- Auxins --- Brassinostéroïde --- Brassinosteroids --- Plant growth promoting substances. --- Ethylene. --- classification. --- Salicylates