TRACKING WATER LIMITATION IN PHOTOSYNTHESIS WITH SUN-INDUCED CHLOROPHYLL FLUORESCENCE

Drought stress; Fluorescence yield; Soil water availability; Solar-Induced chlorophyll fluorescence; Computer Science Applications; Earth and Planetary Sciences (all)

Abstract :

[en] Sun-induced chlorophyll fluorescence has a mechanistic link to photosynthesis. It is therefore sensitive to subtle, stress-induced changes in photosynthetic activity. This study shows the evolution of the emission of sun-induced chlorophyll fluorescence (SIF) by a yellow mustard stand grown in plant boxes under varying water supply and under varying meteorological conditions, causing changes in the evaporative demand. Affected by both leaf biochemical processes and by changes in the plant canopy structure, we combined the fluorescence measurements with reflectance measurements to assess the effect of both components. A first result of this study shows that the biochemical component of the fluorescence emission decreases because of either a reduction in the water supply or an increase in the evaporative demand by the atmosphere.

Disciplines :

Environmental sciences & ecology
Earth sciences & physical geography

Author, co-author :

de Cannière, S.; Earth and Life Institute, Université Catholique de Louvain, Belgium

Jonard, François ; Université de Liège - ULiège > Département de géographie ; Earth and Life Institute, Université Catholique de Louvain, Belgium ; Agrosphere (IBG-3) Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, Jülich, Germany

Language :

English

Title :

TRACKING WATER LIMITATION IN PHOTOSYNTHESIS WITH SUN-INDUCED CHLOROPHYLL FLUORESCENCE

Publication date :

2021

Event name :

2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS

Event place :

Brussels, Belgium

Event date :

12-07-2021 => 16-07-2021

Audience :

International

Main work title :

IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium, Proceedings

Publisher :

Institute of Electrical and Electronics Engineers Inc.

ISBN/EAN :

978-1-66540-369-6

Peer reviewed :

Peer reviewed

Additional URL :

http://xplorestaging.ieee.org/ielx7/9553015/9553016/09555153.pdf?arnumber=9555153

Funders :

The Institute of Electrical and Electronics Engineers Geoscience and Remote Sensing Society (GRSS)

Available on ORBi :

since 22 January 2024

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Bibliography

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