Sensitivity of thermal imaging and infrared thermometry to detect water status changes in Euonymus japonica plants irrigated with saline reclaimed water

Gómez-Bellot, María José; Tortosa, Pedro Antonio Nortes; Sánchez-Blanco, María Jesús; Ortuño, M.F.

doi:10.1016/j.biosystemseng.2015.02.014

“…The classes do show overlap, but the means are significantly different. The boxplots in the figure show that mean temperatures increased with increased salinity level, in line with previous plant‐level studies (Howell et al ., ; Hackl et al ., ; Gómez‐Bellot et al ., ). However, we found only small differences between the slight and the moderate salinity classes.…”

Section: Resultsmentioning

confidence: 97%

“…We selected the Aqua satellite instead of the Terra because Gómez‐Bellot et al . () observed the best correlation between canopy temperature and salinity treatment at midday.…”

Section: Methodsmentioning

confidence: 99%

Satellite Thermography for Soil Salinity Assessment of Cropped Areas in Uzbekistan

Ivushkin

¹

,

Bartholomeus

²

,

Bregt

³

et al. 2017

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A change of canopy temperature can indicate stress in vegetation. Use of canopy temperature to assess salt stress in specific plant species has been well studied in laboratory and greenhouse experiments, but its potential for use in landscape-level studies using remote sensing techniques has not yet been explored. Our study investigated the application of satellite thermography to assess soil salinity of cropped areas at the landscape level. The study region was Syrdarya Province, a salt-affected, irrigated semi-arid province of Uzbekistan planted mainly to cotton and wheat. We used moderate-resolution imaging spectroradiometer satellite images as an indicator for canopy temperature and the provincial soil salinity map as a ground truth dataset. Using analysis of variance, we examined relations among the soil salinity map and canopy temperature, normalized difference vegetation index, enhanced vegetation index, and digital elevation model. The results showed significant correlations between soil salinity and canopy temperature, but the strength of the relation varied over the year. The strongest relation was observed for cotton in September. The calculated F values were higher for canopy temperature than for the other indicators investigated. Our results suggest that satellite thermography is a valuable landscape-level approach for detecting soil salinity in areas under agricultural crops.

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“…Furthermore, canopy temperature measurements in sorghum plants were found to be sensitive enough to indicate differences across the salinity treatments when soil moisture was uniform for several days following irrigation. The results of several studies have demonstrated that canopy temperature or thermal indices may be useful indicators of osmotic effects due to salt stress on myrtle, sorghum and euonymus plants [6,157,159].…”

Section: Effects Of Salinity On Leaf Water Relations and Gas Exchangementioning

confidence: 99%

Plant Responses to Salt Stress: Adaptive Mechanisms

Acosta‐Motos¹,

Ortuño²,

Bernal‐Vicente³

et al. 2017

Preprint

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This review deals with the adaptive mechanisms that plants can implement to cope with the challenge of salt stress. Plants tolerant to NaCl implement a series of adaptations to acclimate to salinity, including morphological, physiological and biochemical changes. These changes include increases in the root/canopy ratio and in the chlorophyll content in addition to changes in the leaf anatomy that ultimately lead to preventing leaf ion toxicity, thus maintaining the water status in order to limit water loss and protect the photosynthesis process. Furthermore, we deal with the effect of salt stress on photosynthesis and chlorophyll fluorescence and some of the mechanisms thought to protect the photosynthetic machinery, including the xanthophyll cycle, photorespiration pathway, and water-water cycle. Finally, we also provide an updated discussion on salt-induced oxidative stress at the subcellular level and its effect on the antioxidant machinery in both salt-tolerant and salt-sensitive plants. The aim is to extend our understanding of how salinity may affect the physiological characteristics of plants.

show abstract

“…Furthermore, canopy temperature measurements in sorghum plants were found to be sensitive enough to indicate differences across the salinity treatments when soil moisture was uniform for several days following irrigation. The results of several studies have demonstrated that canopy temperature or thermal indices may be useful indicators of osmotic effects due to salt stress on myrtle, sorghum and euonymus plants [6,158,160].…”

Section: Effects Of Salinity On Leaf Water Relations and Gas Exchangementioning

confidence: 99%

Plant Responses to Salt Stress: Adaptive Mechanisms

Acosta‐Motos

¹

,

Ortuño

²

,

Bernal‐Vicente

³

et al. 2017

View full text Add to dashboard Cite

This review deals with the adaptive mechanisms that plants can implement to cope with the challenge of salt stress. Plants tolerant to NaCl implement a series of adaptations to acclimate to salinity, including morphological, physiological and biochemical changes. These changes include increases in the root/canopy ratio and in the chlorophyll content in addition to changes in the leaf anatomy that ultimately lead to preventing leaf ion toxicity, thus maintaining the water status in order to limit water loss and protect the photosynthesis process. Furthermore, we deal with the effect of salt stress on photosynthesis and chlorophyll fluorescence and some of the mechanisms thought to protect the photosynthetic machinery, including the xanthophyll cycle, photorespiration pathway, and water-water cycle. Finally, we also provide an updated discussion on salt-induced oxidative stress at the subcellular level and its effect on the antioxidant machinery in both salt-tolerant and salt-sensitive plants. The aim is to extend our understanding of how salinity may affect the physiological characteristics of plants.

show abstract

Sensitivity of thermal imaging and infrared thermometry to detect water status changes in Euonymus japonica plants irrigated with saline reclaimed water

Cited by 35 publications

References 60 publications

Satellite Thermography for Soil Salinity Assessment of Cropped Areas in Uzbekistan

Satellite Thermography for Soil Salinity Assessment of Cropped Areas in Uzbekistan

Plant Responses to Salt Stress: Adaptive Mechanisms

Plant Responses to Salt Stress: Adaptive Mechanisms

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