Espace des ressources électronique en libre accès Bibliothèque de la Faculté SNVST de L'UAMOB
Détail de l'indexation
575 |
Ouvrages de la bibliothèque en indexation 575 (4)
Faire une suggestion Affiner la recherche Interroger des sources externesCyclin-dependent kinase (CDK) inhibitors regulate the CDK-cyclin complex activities in endoreduplicating cells of developing tomato fruit / Badia Bisbis
Titre : Cyclin-dependent kinase (CDK) inhibitors regulate the CDK-cyclin complex activities in endoreduplicating cells of developing tomato fruit Type de document : document électronique Auteurs : Badia Bisbis, Auteur ; Frédéric Delmas, Auteur ; Jerome Joubes, Auteur Editeur : The American Society for Biochemistry and Molecular Biology Année de publication : 2006 Importance : 281 (11) Note générale : VOL. 281, NO. 11, pp. 7374 –7383, Langues : Anglais (eng) Catégories : 575 Anatomie et physiologie végétales Tags : 'CDK CYCLIN DEPENDENT KINASE , INHIBITEUR DE CDK ENDOREDUPLICATION BIOLOGIE VEGETALE FRUIT DEVELOPPEMENT DU FRUIT CYCLE CELLULAIRE '. Index. décimale : 575 Résumé : The jelly-like locular (gel) tissue of tomato fruit is made up of large thin-walled and highly vacuolized cells. The development of the gel tissue is characterized by the arrest of mitotic activities, the inhibition of cyclin-dependent kinase A (CDKA) activity, and numerous rounds of nuclear DNA endoreduplication. To decipher the molecular determinants controlling these developmental events, we investigated the putative involvement of CDK inhibitors (p27 Kip -related proteins, or KRPs) during the endoreduplication process. Two cDNAs, LeKRP1 and LeKRP2, encoding tomato CDK
inhibitors were isolated. The LeKRP1 and LeKRP2 transcript expression was shown to be enhanced in the differentiating cells of the gel undergoing endoreduplication. At the translational level,LeKRP1 was shown to accumulate in the gel tissue and to participate in the inhibition of the CDK-cyclin kinase activities occurring in endoreduplicating cells of the gel tissue. We here propose that LeKRP1 participates in the control of both the cell cycle and the
endoreduplication cycleEn ligne : https://hal.inrae.fr/hal-02661083v1 Format de la ressource électronique : Cyclin-dependent kinase (CDK) inhibitors regulate the CDK-cyclin complex activities in endoreduplicating cells of developing tomato fruit [document électronique] / Badia Bisbis, Auteur ; Frédéric Delmas, Auteur ; Jerome Joubes, Auteur . - The American Society for Biochemistry and Molecular Biology, 2006 . - 281 (11).
VOL. 281, NO. 11, pp. 7374 –7383,
Langues : Anglais (eng)
Catégories : 575 Anatomie et physiologie végétales Tags : 'CDK CYCLIN DEPENDENT KINASE , INHIBITEUR DE CDK ENDOREDUPLICATION BIOLOGIE VEGETALE FRUIT DEVELOPPEMENT DU FRUIT CYCLE CELLULAIRE '. Index. décimale : 575 Résumé : The jelly-like locular (gel) tissue of tomato fruit is made up of large thin-walled and highly vacuolized cells. The development of the gel tissue is characterized by the arrest of mitotic activities, the inhibition of cyclin-dependent kinase A (CDKA) activity, and numerous rounds of nuclear DNA endoreduplication. To decipher the molecular determinants controlling these developmental events, we investigated the putative involvement of CDK inhibitors (p27 Kip -related proteins, or KRPs) during the endoreduplication process. Two cDNAs, LeKRP1 and LeKRP2, encoding tomato CDK
inhibitors were isolated. The LeKRP1 and LeKRP2 transcript expression was shown to be enhanced in the differentiating cells of the gel undergoing endoreduplication. At the translational level,LeKRP1 was shown to accumulate in the gel tissue and to participate in the inhibition of the CDK-cyclin kinase activities occurring in endoreduplicating cells of the gel tissue. We here propose that LeKRP1 participates in the control of both the cell cycle and the
endoreduplication cycleEn ligne : https://hal.inrae.fr/hal-02661083v1 Format de la ressource électronique :
Titre : Detection of acoustic events in Lavender for measuring the xylem vulnerability to embolism and cellular damages Type de document : document électronique Auteurs : Lia Lamacque, Auteur ; Florian Sabin, Auteur ; Thierry Améglio, Auteur ; Stéphane Herbette, Auteur ; Guillaume Charrier, Auteur Editeur : Oxford Academic Année de publication : 2022 Note générale : Volume 73, Issue 11, Pages 3699–3710 Langues : Anglais (eng) Catégories : 575 Anatomie et physiologie végétales :575.2 Transformations génétiques des plantes Tags : 'Acoustics cavitation cellular damages dendrometer hydraulic failure, lavender plant mortality xylem '. Index. décimale : 575 Résumé : Acoustic emission analysis is promising to investigate the physiological events leading to drought-induced injury and mortality. However, their nature and source are not fully understood, making this technique difficult to use as a direct measure of the loss of xylem hydraulic conductance. Acoustic emissions were recorded during severe dehydration in lavender plants (Lavandula angustifolia) and compared with the dynamics of embolism development and cell damage. The timing and characteristics of acoustic signals from two independent recording systems were compared by principal component analysis (PCA). Changes in water potential, branch diameter, loss of hydraulic conductance, and cellular damage were also measured to quantify drought-induced damages. Two distinct phases of acoustic emissions were observed during dehydration: the first one associated with a rapid loss of diameter and a significant increase in loss of xylem conductance (90%), and the second with slower changes in diameter and a significant increase in cellular damage. Based on PCA, a developed algorithm discriminated hydraulic-related acoustic signals from other sources, proposing a reconstruction of hydraulic vulnerability curves. Cellular damage preceded by hydraulic failure seems to lead to a lack of recovery. The second acoustic phase would allow detection of plant mortality. En ligne : https://arxiv.org/abs/2105.03866 Format de la ressource électronique : Detection of acoustic events in Lavender for measuring the xylem vulnerability to embolism and cellular damages [document électronique] / Lia Lamacque, Auteur ; Florian Sabin, Auteur ; Thierry Améglio, Auteur ; Stéphane Herbette, Auteur ; Guillaume Charrier, Auteur . - Oxford Academic, 2022.
Volume 73, Issue 11, Pages 3699–3710
Langues : Anglais (eng)
Catégories : 575 Anatomie et physiologie végétales :575.2 Transformations génétiques des plantes Tags : 'Acoustics cavitation cellular damages dendrometer hydraulic failure, lavender plant mortality xylem '. Index. décimale : 575 Résumé : Acoustic emission analysis is promising to investigate the physiological events leading to drought-induced injury and mortality. However, their nature and source are not fully understood, making this technique difficult to use as a direct measure of the loss of xylem hydraulic conductance. Acoustic emissions were recorded during severe dehydration in lavender plants (Lavandula angustifolia) and compared with the dynamics of embolism development and cell damage. The timing and characteristics of acoustic signals from two independent recording systems were compared by principal component analysis (PCA). Changes in water potential, branch diameter, loss of hydraulic conductance, and cellular damage were also measured to quantify drought-induced damages. Two distinct phases of acoustic emissions were observed during dehydration: the first one associated with a rapid loss of diameter and a significant increase in loss of xylem conductance (90%), and the second with slower changes in diameter and a significant increase in cellular damage. Based on PCA, a developed algorithm discriminated hydraulic-related acoustic signals from other sources, proposing a reconstruction of hydraulic vulnerability curves. Cellular damage preceded by hydraulic failure seems to lead to a lack of recovery. The second acoustic phase would allow detection of plant mortality. En ligne : https://arxiv.org/abs/2105.03866 Format de la ressource électronique :
Titre : Device for measuring the plant physiology and electrophysiology Type de document : document électronique Auteurs : Serge Kernbach, Auteur Editeur : arXiv Langues : Anglais (eng) Catégories : 575 Anatomie et physiologie végétales Tags : 'measuring physiological electrophysiological plants physiologie spectroscopy plantes bio-physiological'. Index. décimale : 575 Résumé : This paper briefly describes the device - the phytosensor - for measuring physiological and electrophysiological parameters of plants. This system is developed as a bio-physiological sensor in precise agriculture, as a tool in plant research and environmental biology, and for plant enthusiasts in smart home or entertainment applications. The phytosentor measures main physiological parameters such as the leaf transpiration rate, sap flow, tissue conductivity and frequency response, biopotentials (action potentials and variation potentials), and can conduct electrochemical impedance spectroscopy with organic tissues. Soil moisture and temperature, air quality (CO2, NO2, O3 and other sensors on I2C bus), and general environmental parameters (light, temperature, humidity, air pressure, electromagnetic and magnetic fields) are also recorded in real time. In addition to phytosensing, the device can also perform phytoactuation, i.e. execute electrical or light stimulation of plants, control irrigation and lighting modes, conduct fully autonomous experiments with complex feedback-based and adaptive scenarios in robotic or biohybrid systems. This article represents the revised and extended version of original paper and includes some descriptions and images from the FloraRobotica and BioHybrids projects. En ligne : https://arxiv.org/abs/2206.10459 Format de la ressource électronique : Device for measuring the plant physiology and electrophysiology [document électronique] / Serge Kernbach, Auteur . - arXiv, [s.d.].
Langues : Anglais (eng)
Catégories : 575 Anatomie et physiologie végétales Tags : 'measuring physiological electrophysiological plants physiologie spectroscopy plantes bio-physiological'. Index. décimale : 575 Résumé : This paper briefly describes the device - the phytosensor - for measuring physiological and electrophysiological parameters of plants. This system is developed as a bio-physiological sensor in precise agriculture, as a tool in plant research and environmental biology, and for plant enthusiasts in smart home or entertainment applications. The phytosentor measures main physiological parameters such as the leaf transpiration rate, sap flow, tissue conductivity and frequency response, biopotentials (action potentials and variation potentials), and can conduct electrochemical impedance spectroscopy with organic tissues. Soil moisture and temperature, air quality (CO2, NO2, O3 and other sensors on I2C bus), and general environmental parameters (light, temperature, humidity, air pressure, electromagnetic and magnetic fields) are also recorded in real time. In addition to phytosensing, the device can also perform phytoactuation, i.e. execute electrical or light stimulation of plants, control irrigation and lighting modes, conduct fully autonomous experiments with complex feedback-based and adaptive scenarios in robotic or biohybrid systems. This article represents the revised and extended version of original paper and includes some descriptions and images from the FloraRobotica and BioHybrids projects. En ligne : https://arxiv.org/abs/2206.10459 Format de la ressource électronique :
Titre : Holocrine Secretion and Kino Flow in Angiosperms: Their Role and Physiological Advantages in Plant Defence Mechanisms Type de document : document électronique Auteurs : Paulo Cabrita, Auteur Editeur : arXiv Année de publication : 2020 Note générale : 69 pages, 7 figures, 2 Tables Langues : Anglais (eng) Catégories : 575 Anatomie et physiologie végétales :575.2 Transformations génétiques des plantes Tags : 'cambium gum, kino veins unsteady Stokes equation laminar flow physiologie '. Index. décimale : 575 Résumé : Kino is a plant exudate, rich in polyphenols, produced by several angiosperms in reaction to injury of the cambium. It flows out of kino veins, which compose an anatomically distinct continuous system of tangentially anastomosing canals produced by the cambium upon damage, encircling plant stems and branches. Kino is loaded into the vein lumen by autolysis of a cambiform epithelium lined by suberized cells that separate kino veins from the surrounding axial parenchyma. A model describing kino flow is presented to investigate how vein distribution and structure, as well as the loading, solidification, and viscosity of kino affect flow. Considering vein anatomy, viscosity, and a time-dependent loading of kino, the unsteady Stokes equation was applied. Qualitatively, kino flow is similar to resin flow observed on conifers. There is an increase in flow towards the vein open end, with both pressure and flow depending on the vein dimensions, properties, and loading of kino. However, kino veins present a much smaller specific resistance to flow compared to resin ducts. Also, unlike resin loading in conifers, the loading of kino is not pressure-driven. The pressure and pressure gradient required to drive an equally fast flow are smaller than what is observed on the resin ducts of conifers. These results agree with previous observations on some angiosperms and suggest that flow within internal secretory systems derived from autolysing epithelia may have lower metabolic energy costs; thus presenting physiological advantages and possibly constituting an evolutionary step of angiosperms in using internal secretory systems in plant defence mechanisms compared to resin flow in conifers. Understanding of how these physiological and morphological parameters affect kino flow might be useful for selecting species and developing more sustainable and economically viable methods of tapping gum and gum resin in angiosperms. En ligne : https://arxiv.org/abs/1902.09308 Format de la ressource électronique : Holocrine Secretion and Kino Flow in Angiosperms: Their Role and Physiological Advantages in Plant Defence Mechanisms [document électronique] / Paulo Cabrita, Auteur . - arXiv, 2020.
69 pages, 7 figures, 2 Tables
Langues : Anglais (eng)
Catégories : 575 Anatomie et physiologie végétales :575.2 Transformations génétiques des plantes Tags : 'cambium gum, kino veins unsteady Stokes equation laminar flow physiologie '. Index. décimale : 575 Résumé : Kino is a plant exudate, rich in polyphenols, produced by several angiosperms in reaction to injury of the cambium. It flows out of kino veins, which compose an anatomically distinct continuous system of tangentially anastomosing canals produced by the cambium upon damage, encircling plant stems and branches. Kino is loaded into the vein lumen by autolysis of a cambiform epithelium lined by suberized cells that separate kino veins from the surrounding axial parenchyma. A model describing kino flow is presented to investigate how vein distribution and structure, as well as the loading, solidification, and viscosity of kino affect flow. Considering vein anatomy, viscosity, and a time-dependent loading of kino, the unsteady Stokes equation was applied. Qualitatively, kino flow is similar to resin flow observed on conifers. There is an increase in flow towards the vein open end, with both pressure and flow depending on the vein dimensions, properties, and loading of kino. However, kino veins present a much smaller specific resistance to flow compared to resin ducts. Also, unlike resin loading in conifers, the loading of kino is not pressure-driven. The pressure and pressure gradient required to drive an equally fast flow are smaller than what is observed on the resin ducts of conifers. These results agree with previous observations on some angiosperms and suggest that flow within internal secretory systems derived from autolysing epithelia may have lower metabolic energy costs; thus presenting physiological advantages and possibly constituting an evolutionary step of angiosperms in using internal secretory systems in plant defence mechanisms compared to resin flow in conifers. Understanding of how these physiological and morphological parameters affect kino flow might be useful for selecting species and developing more sustainable and economically viable methods of tapping gum and gum resin in angiosperms. En ligne : https://arxiv.org/abs/1902.09308 Format de la ressource électronique :
