Amnon Cochavi
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View article: The impact of drought and high vapor pressure deficit on the relationship between plant carbon assimilation and chlorophyll fluorescence
The impact of drought and high vapor pressure deficit on the relationship between plant carbon assimilation and chlorophyll fluorescence Open
Ongoing climate change, particularly the dramatic shifts in environmental conditions, requires rethinking how vegetation responds to stress. Drought and high atmospheric water demand (VPD) are often coupled stress factors but can have dist…
View article: Broomrape–host interaction: host morphology and physiology as metrics for infestation
Broomrape–host interaction: host morphology and physiology as metrics for infestation Open
Main conclusion In contrast to other plant pests, broomrape, parasitic plant, rely on maintaining the productivity of the host plant to complete their life cycle. Abstract Parasitic plants, particularly those in the Orobanchaceae family, r…
View article: Dynamic responses of chlorophyll fluorescence parameters to drought across diverse plant families
Dynamic responses of chlorophyll fluorescence parameters to drought across diverse plant families Open
Chlorophyll fluorescence measurement is a quick and efficient tool for plant stress‐level detection. The use of Pulse amplitude modulation (PAM), allows the detection of the plant stress level under field conditions. Over the years, severa…
View article: Combining branch-scale COS/CO2 exchange and canopy-scale SIF measurements to disentangle the effects of high VPD and low soil moisture in mature pine trees under field conditions
Combining branch-scale COS/CO2 exchange and canopy-scale SIF measurements to disentangle the effects of high VPD and low soil moisture in mature pine trees under field conditions Open
<p>During the regular seasonal drought conditions in our semi-arid pine forest, soil water content decrease below the 16% threshold of no transpirable soil water availability, and VPD increase to values of >5 kPa. Soil drought in …
View article: Combining SIF, reflectance, and leaf scale measuremnts to assess the effcets of interannual changes in winter rainfall on tree physiology during the following summer drought period in a dry Mediterranean pine forest
Combining SIF, reflectance, and leaf scale measuremnts to assess the effcets of interannual changes in winter rainfall on tree physiology during the following summer drought period in a dry Mediterranean pine forest Open
<p>Dry Mediterranean forests are characterized by a short rainy season followed by a long dry period with high temperatures and radiation levels. These ecosystem are also exposed to large interannual variations in precipitation. Taki…
View article: Differential responses to two heatwave intensities in a Mediterranean citrus orchard are identified by combining measurements of fluorescence and carbonyl sulfide (COS) and CO<sub>2</sub> uptake
Differential responses to two heatwave intensities in a Mediterranean citrus orchard are identified by combining measurements of fluorescence and carbonyl sulfide (COS) and CO<sub>2</sub> uptake Open
Summary The impact of extreme climate episodes such as heatwaves on plants physiological functioning and survival may depend on the event intensity, which requires quantification. We unraveled the distinct impacts of intense (HW) and inter…
View article: Using Sun-induced fluorescence and Carbonyl Sulfide flux to assess the response to seasonal heatwave in a citrus orchard
Using Sun-induced fluorescence and Carbonyl Sulfide flux to assess the response to seasonal heatwave in a citrus orchard Open
<p>Springtime heatwaves are common phenomena in the Mediterranean region, named &#8216;Sharav&#8217; or &#8216;Hamsin&#8217;. During these heatwaves, air temperatures (Ta) and vapor pressure demand (VPD) increase rapi…
View article: <i>Phelipanche aegyptiaca</i> parasitism impairs salinity tolerance in young leaves of tomato
<i>Phelipanche aegyptiaca</i> parasitism impairs salinity tolerance in young leaves of tomato Open
The parasite Phelipanche aegyptiaca infests tomato, a crop plant that is commonly cultivated in semi‐arid environments, where tomato may be subject to salt stress. Since the relationship between the two stresses —salinity and parasitism – …
View article: The potential of the spectral ‘water balance index’ (<scp>WABI</scp>) for crop irrigation scheduling
The potential of the spectral ‘water balance index’ (<span>WABI</span>) for crop irrigation scheduling Open
Summary Hyperspectral sensing can detect slight changes in plant physiology, and may offer a faster and nondestructive alternative for water status monitoring. This premise was tested in the current study using a narrow‐band ‘water balance…
View article: Recognition of Orobanche cumana Below-Ground Parasitism Through Physiological and Hyper Spectral Measurements in Sunflower (Helianthus annuus L.)
Recognition of Orobanche cumana Below-Ground Parasitism Through Physiological and Hyper Spectral Measurements in Sunflower (Helianthus annuus L.) Open
Broomrape (Orobanche and Phelipanche spp.) parasitism is a severe problem in many crops worldwide, including in the Mediterranean basin. Most of the damage occurs during the sub-soil developmental stage of the parasite, by the time the par…
View article: Thermal Time Model for Egyptian Broomrape (Phelipanche aegyptiaca) Parasitism Dynamics in Carrot (Daucus carota L.): Field Validation
Thermal Time Model for Egyptian Broomrape (Phelipanche aegyptiaca) Parasitism Dynamics in Carrot (Daucus carota L.): Field Validation Open
Carrot, a highly profitable crop in Israel, is severely damaged by Phelipanche aegyptiaca parasitism. Herbicides can effectively control the parasite and prevent damage, but for optimal results, knowledge about the soil-subsurface phenolog…