Stomatal Function

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Stomatal Function

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Author : Eduardo Zeiger
language : en
Publisher: Stanford University Press
Release Date : 1987

Stomatal Function written by Eduardo Zeiger and has been published by Stanford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Science categories.

Cell Wall Related And Biomechanics Mechanisms In Stomatal Function And Development

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Author : Yintong Chen
language : en
Publisher:
Release Date : 2021

Cell Wall Related And Biomechanics Mechanisms In Stomatal Function And Development written by Yintong Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.

Stomata are microscopic pores on the leaf surface that are flanked by guard cells. The degree to which stomata are open or closed controls the rate of CO2 influx and water loss in plants and is important for plant physiology. Homogalacturonan (HG) is a major component of the guard cell wall and its proper metabolism is required for normal stomatal dynamics; however, the function of HG in guard cell mechanics is elusive. Employing genetic, physiological, mechanical, modeling, and biochemical approaches, we revealed that an HG degrading enzyme, PECTATE LYASE-LIKE12, contributes to the softening of guard cell walls by reducing calcium crosslinkable HG and unexpectedly is required for proper pressurization of guard cells. Our findings expand the understanding of HG metabolism in stomatal dynamics and aid in elucidating the mechanisms underlying stomatal function. As a leaf develops, stomatal conductance first increases then decreases, suggesting that stomatal dynamics change over the course of development. However, the maturation process of guard cells is not yet well defined, which limits our understanding of the mechanical changes that occur in developing stomata. Using time-series imaging, plasmolysis, and cell ablation, we ruled out cell wall mechanics and turgor pressure as factors contributing to wider dynamic range in mature stomata and discovered that mature stomata are more open than young stomata because they are locked in an open state. These results expand our knowledge of the mechanical changes that occur as stomatal guard cells age. The "see-saw" hypothesis proposes that opposing changes in turgor pressure between guard cells and subsidiary cells is the reason that grass stomata, which consist of narrow guard cells flanked by larger subsidiary cells, have faster stomatal dynamics than eudicot stomata, which are flanked by wider, kidney-shaped guard cells. A similar hypothesis is proposed for Arabidopsis stomata, which are surrounded by puzzle piece-shaped pavement cells, but neither of these hypotheses have been empirically tested. Using time-series imaging, we observed distinct behaviors between neighboring and non-neighboring pavement cells during stomatal opening and closing. Ablating pavement cells results in stomatal complexes becoming wider and shorter, suggesting the presence of a compression force from the flanking side which might originate from pavement cells, but the mechanical impacts of junctional side pavement cells that abut the top and bottom of each stomatal complex remain to be elucidated. Data collected in this project will be combined with computational mechanical modeling to characterize and predict the mechanical interactions between guard cells and surrounding cells. In summary, the data collected in these projects have revealed mechanical mechanisms underlying the influence of cell wall modification and stomatal maturation on stomatal dynamics, and shed light on the mechanical impacts of interactions between guard cells and pavement cells in determining stomatal geometry. These findings open new potential avenues for improving stomatal function and water use efficiency in plants.

Linking Stomatal Development And Physiology From Stomatal Models To Non Model Species And Crops

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Author : Caspar Christian Cedric Chater
language : en
Publisher: Frontiers Media SA
Release Date : 2021-11-26

Linking Stomatal Development And Physiology From Stomatal Models To Non Model Species And Crops written by Caspar Christian Cedric Chater and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-26 with Science categories.

Evolution Of Stomatal Function

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Author : Caroline Elliot-Kingston
language : en
Publisher:
Release Date : 2011

Evolution Of Stomatal Function written by Caroline Elliot-Kingston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

Stomatal Function

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Author : Eduardo Zeiger
language : en
Publisher:
Release Date : 1987

Stomatal Function written by Eduardo Zeiger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.

Interactions In Stomatal Function

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Author : Pedro Jose Aphalo
language : en
Publisher:
Release Date : 1991

Interactions In Stomatal Function written by Pedro Jose Aphalo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Ivy categories.

The Role Of Calcium In Stomatal Function

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Author : Amnon Schwartz
language : en
Publisher:
Release Date : 1990

The Role Of Calcium In Stomatal Function written by Amnon Schwartz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Calcium categories.

Interactions In Stomatal Function

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Author : Pedro Jose Aphalo
language : en
Publisher:
Release Date : 1991

Interactions In Stomatal Function written by Pedro Jose Aphalo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Ivy categories.

The Role Of Guard Cell Chloroplasts In Stomatal Function And Coordinating Stomatal And Mesophyll Responses

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Author : Kucheli Batta
language : en
Publisher:
Release Date : 2018

The Role Of Guard Cell Chloroplasts In Stomatal Function And Coordinating Stomatal And Mesophyll Responses written by Kucheli Batta and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.

Stomata

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Author : C. Willmer
language : en
Publisher: Springer Science & Business Media
Release Date : 1996

Stomata written by C. Willmer and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Science categories.

The second edition of this popular work provides a comprehensive account of all aspects of stomatal biology. The substantially revised text is thoroughly up to date and well illustrated with numerous line illustrations, photographs and comprehensive tables. The theory of gaseous diffusion through stomata is reviewed in a new chapter and sections on signal perception and transduction, guard cell ionic relations and guard cell metabolism have been added. A concluding chapter reviews the genetics and molecular biology of stomata. This work provides a comprhensive reference text which will appeal to advanced students, post-graduates and lecturers in plant physiology.