The F685/F730 Chlorophyll Fluorescence Ratio as Indicator of Chilling Stress in Plants

Agati, Giovanni; Mazzinghi, P.; Paola, M. Lipucci Di; Fusi, Franco; Cecchi, Giovanna

doi:10.1016/s0176-1617(96)80270-7

Cited by 68 publications

(34 citation statements)

References 29 publications

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“…It has been shown that relative magnitude of the red and far‐red fluorescence is sensitive to nitrogen uptake, chlorophyll content, and responses to stress conditions such as low temperature (Agati et al, 1995, 1996; Campbell, Carmichael, & Chai, 2008; Campbell, Middleton, et al, 2008; Campbell et al, 2007; Corp et al, 2003; Rossini et al, 2015). Most of the studies using SIF, including ours, to estimate terrestrial GPP have so far focused on using the far‐red SIF emission.…”

Section: Discussionmentioning

confidence: 99%

Reconstructed Solar‐Induced Fluorescence: A Machine Learning Vegetation Product Based on MODIS Surface Reflectance to Reproduce GOME‐2 Solar‐Induced Fluorescence

Gentine

Alemohammad

2018

Geophysical Research Letters

108

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Solar‐induced fluorescence (SIF) observations from space have resulted in major advancements in estimating gross primary productivity (GPP). However, current SIF observations remain spatially coarse, infrequent, and noisy. Here we develop a machine learning approach using surface reflectances from Moderate Resolution Imaging Spectroradiometer (MODIS) channels to reproduce SIF normalized by clear sky surface irradiance from the Global Ozone Monitoring Experiment‐2 (GOME‐2). The resulting product is a proxy for ecosystem photosynthetically active radiation absorbed by chlorophyll (fAPARCh). Multiplying this new product with a MODIS estimate of photosynthetically active radiation provides a new MODIS‐only reconstruction of SIF called Reconstructed SIF (RSIF). RSIF exhibits much higher seasonal and interannual correlation than the original SIF when compared with eddy covariance estimates of GPP and two reference global GPP products, especially in dry and cold regions. RSIF also reproduces intense productivity regions such as the U.S. Corn Belt contrary to typical vegetation indices and similarly to SIF.

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Section: Discussionmentioning

confidence: 99%

Reconstructed Solar‐Induced Fluorescence: A Machine Learning Vegetation Product Based on MODIS Surface Reflectance to Reproduce GOME‐2 Solar‐Induced Fluorescence

Gentine

Alemohammad

2018

Geophysical Research Letters

108

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“…Although chlorophyll fluorescence has been used as an indicator of hardening process and the development of dormancy [2,4,23], sometimes dormancy and stress hardiness are acquired and lost differently, suggesting that they are independent physiological processes [27]. For example, in Picea mariana the Fv/Fm fluorescence ratio was more useful in evaluating damage due to several kinds of stresses than in estimating the level of dormancy [13].…”

Section: Discussionmentioning

confidence: 99%

Effects of temperature on growth and stress hardening development of phytotron-grown seedlings of Aleppo pine (Pinus halepensis Mill.)

Fernández

Royo²,

Gil³

et al. 2003

Ann. For. Sci.

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-One year-old Pinus halepensis seedlings, grown in peat-vermiculite-pine bark mix in 200 cm 3 containers, were moved to a growth chamber and submitted to a progressive decrease of temperature and photoperiod for three months. Morphological parameters and nutrient and non-structural carbohydrate content were measured. Root growth potential, freezing and drought resistance tests were assessed. Although height growth stopped when the minimum temperature fell below 9 ºC, shoot dry weight increased further. Needle potassium concentration and K/N ratio increased progressively and significantly throughout the trial. This may be attributed to potassium accumulation. As height growth stopped, physiological changes were detected in shoot nitrogen and soluble sugar concentrations, root activity and hydraulic conductance maintenance. Nevertheless, cold and drought resistance tests, as well as root regeneration potential, did not reveal any sign of plant stress tolerance until the minimum temperature decreased to 8 ºC and photoperiod to 9 h. This latter temperature may be considered to be the threshold for Pinus halepensis to accumulate the required chilling hours that make seedlings suitable for afforestation purposes. At least, more than 330 chilling hours (£ 8 ºC) are required to reach a minimum level of stress hardiness. The Fv/Fm chlorophyll fluorescence ratio, measured just one day after the freezing test, provides a good estimate of plant frost tolerance.Pinus halepensis / plant quality / stress tolerance / chilling hours / chlorophyll fluorescence / plant nutrition Résumé -Effets de la température sur la croissance et le développement de la résistance au stress de semis de Pin d'Alep (Pinus halepensis Mill.). Des semis de Pin d'Alep (Pinus halepensis), âgés d'un an, croissant sur un mélange de tourbe-vermiculite-écorce de pin dans des containers de 200 cm 3 , ont été mis en place dans une chambre de croissance et soumis, pour une période de 3 mois, à une température et photopériode décroissant progressivement. Des paramètres morphologiques, de nutrition et de teneur carbonée non structurale ont été mesurés. Des tests de potentiel de croissance racinaire, de résistance au froid et à la sécheresse ont été réalisés. Bien que la croissance en hauteur se soit arrêtée lorsque la température minimum eu atteint 9°C, la masse sèche des pousses continue d'augmenter. La concentration en potassium des aiguilles, le rapport K/N augmente progressivement et significativement au cours de l'essai. Ceci peut être attribué à une accumulation de potassium. Lorsque la croissance en hauteur s'est arrêtée, des changements physiologiques ont été constatés pour la concentration en azote et en sucre soluble des pousses, dans l'activité des racines et dans le maintien de la conductance hydraulique. Cependant, les tests de résistance au froid et à la sécheresse, de même que le potentiel de régénération racinaire, ne révélèrent aucun signe de tolérance de la plante au stress jusqu'à ce que la température minimum décroisse à 8°C et la ph...

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“…PS 2 appears to be preferentially affected by chilling stress (Bolhàr-Nordenkampf and Öquist 1993, Agati et al 1996, Bertamini et al 2007.…”

Section: ⎯⎯⎯⎯mentioning

confidence: 97%

Characteristics of chlorophyll fluorescence and antioxidative system in super-hybrid rice and its parental cultivars under chilling stress

Zhang¹,

Chen²,

He³

et al. 2010

Biologia plant.

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Characteristics of chlorophyll fluorescence and antioxidative system were investigated in rice (Oryza sativa L.) super-hybrid Liangyoupeijiu (LYPJ), maternal cultivar Peiai64s, and paternal cultivar indica rice 9311 under chilling stress. During 6-d chilling treatment, chlorophyll content of all three genotypes was gradually declined. However, the decrease in photosystem 2 (PS 2) maximum photochemical efficiency (F v /F m ) and quantum yield of PS 2 (Φ PS2 ) was less expressive in LYPJ than in parental cultivars The electrolyte leakage and malondialdehyde content in all cultivars increased after chilling treatment, but LYPJ exhibited the least increasing tendency. Activities of superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione reductase (GR) were higher in LYPJ than in parental cultivars. The results demonstrated that tolerance to chilling stress in LYPJ might be adopted mostly from its maternal cultivar.

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The F685/F730 Chlorophyll Fluorescence Ratio as Indicator of Chilling Stress in Plants

Cited by 68 publications

References 29 publications

Reconstructed Solar‐Induced Fluorescence: A Machine Learning Vegetation Product Based on MODIS Surface Reflectance to Reproduce GOME‐2 Solar‐Induced Fluorescence

Reconstructed Solar‐Induced Fluorescence: A Machine Learning Vegetation Product Based on MODIS Surface Reflectance to Reproduce GOME‐2 Solar‐Induced Fluorescence

Effects of temperature on growth and stress hardening development of phytotron-grown seedlings of Aleppo pine (Pinus halepensis Mill.)

Characteristics of chlorophyll fluorescence and antioxidative system in super-hybrid rice and its parental cultivars under chilling stress

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