Utilization of Chlorophyll Fluorescence Imaging Technology to Detect Plant Injury by Herbicides in Sugar Beet and Soybean

Weber, Jonas Felix; Kunz, Christoph; Peteinatos, Gerassimos G.; Santel, Hans‐Joachim; Gerhards, Roland

doi:10.1017/wet.2017.22

Cited by 29 publications

(28 citation statements)

References 28 publications

(43 reference statements)

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“…The F v /F m value is a good proxy of plant health www.scienceasia.org status [32]. In the present study, a reduction in F v /F m values was observed in both creepers under high-temperature stress; further, the ratio decreased continuously with the prolongation of the stress.…”

Section: Discussionsupporting

confidence: 58%

Effects of high temperature on photosynthetic capacity in the leaves of creepers

Yuan¹,

Li²,

Gu³

2020

ScienceAsia

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High temperature induces structural and physiological damage to plants. However, studies on the effects of constant high temperature on climbing plant species are limited. To estimate the response of photosynthetic capacity of two creeper species, Parthenocissus tricuspidata (Sieb. et Zucc.) and Parthenocissus quinquefolia (L.) Planch, to constant high-temperature treatment at noon, we measured photosynthetic pigments, gas exchange, and chlorophyll fluorescence parameters at 35, 40, and 45°C (25°C was the control treatment). High temperature significantly reduced photosynthetic pigment content, whereas carotenoid content showed the opposite trend. Net photosynthetic rate, stomatal conductance, transpiration rate, maximal quantum yield of PSII photochemistry, actual quantum yield of PSII photochemistry, and the coefficient of photochemical quenching all showed a decreasing trend, with increasing stress duration, whereas the non-regulated thermal energy loss and regulated thermal energy loss indexes increased. As temperature increased, intercellular CO 2 concentration initially decreased and then increased. Non-stomatal restriction factors were the main cause of the decrease in photosynthetic rate when temperature exceeded 40°C. These parameters recovered to pre-stress levels only in plants grown at 35°C upon stress relief. P. quinquefolia showed higher photosynthetic heat resistance and resilience than P. tricuspidata. Our results revealed photosynthetic adaptation and recovery mechanisms in two creepers grown under high-temperature stress. Molecular and genetic approaches should be considered to gain deeper insight into the mechanism underlying high temperature adaptation in these two creepers.

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Section: Discussionsupporting

confidence: 58%

Effects of high temperature on photosynthetic capacity in the leaves of creepers

Yuan¹,

Li²,

Gu³

2020

ScienceAsia

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“…Wang et al [ 19 , 20 ] developed a mobile sensor from a chlorophyll fluorescence imaging system, which could be applied in the greenhouse and field tests. It has been applied for the early detection of the effects of herbicide on a commercially sensitive population of Alopecurus myosuroides and for herbicide stress detection in soybeans, a crop which is very sensitive to the tested herbicides [ 21 , 22 ]. However, further investigation is required to test its ability to identify herbicide resistance, for the greenhouse and field application, and on a wider range of weed species.…”

Section: Introductionmentioning

confidence: 99%

A Fluorescence Sensor Capable of Real-Time Herbicide Effect Monitoring in Greenhouses and the Field

Wang

Jia

et al. 2018

Sensors

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Herbicide resistant weeds need to be identified early so that yield loss can be avoided by applying proper field management strategies. A novel chlorophyll-fluorescence-imaging sensor has been developed to conduct real-time herbicide effect evaluation. In this research, greenhouse and field experiments were conducted to calibrate the capability of the sensor in monitoring herbicide effects on different biotypes of two grass weeds (Alopecurus myosuroides, Apera spica-venti) in southwestern Germany. Herbicides with different modes of action were applied for the effect monitoring. Chlorophyll fluorescence yield of the plants was measured 3–15 days after treatment (DAT) using the new fluorescence sensor. Visual assessment of the weeds was carried out on 21 DAT. The results showed that the maximal PS II quantum yield (Fv/Fm) of herbicide sensitive weeds was significantly lower than the values of resistant populations in 5 DAT. The new technology was capable of quickly identifying the herbicide’s effect on plants. It can be used to optimize management strategies to control herbicide resistant weeds.

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“…vulgaris) and soybean (Glycine max (L.) Merr. ), Weber et al (2017) examined nine sugar beet and seven soybean cultivars with Table 4 Maximum quantum yield of photosystem II (F v /F m ) of sensitive (S) and resistant (R) Stellaria media (L.) Vill. plants 4 days after treatment in comparison with the accuracy of the discriminant maximum likelihood classifiers…”

Section: Herbicide Induced Stress In Cropsmentioning

confidence: 99%

“…In the past four decades, several optical sensor systems have been developed to support farmers and consultants by identifying crop stress response to fungal infections and diseases, weed competition and pests (Peteinatos et al 2016). Sensors have also been used to detect phytotoxic side effects of pesticides, mainly herbicides in crops (Weber et al 2017). Pests, fungal diseases and weeds can be controlled with lower pesticide rates, when they are detected at an early stage of development.…”

Section: Introductionmentioning

confidence: 99%

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Features and applications of a field imaging chlorophyll fluorometer to measure stress in agricultural plants

et al. 2020

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Most non-destructive methods for plant stress detection do not measure the primary stress response but reactions of processes downstream of primary events. For instance, the chlorophyll fluorescence ratio Fv/Fm, which indicates the maximum quantum yield of photosystem II, can be employed to monitor stress originating elsewhere in the plant cell. This article describes the properties of a sensor to quantify herbicide and pathogen stress in agricultural plants for field applications by the Fv/Fm parameter. This dedicated sensor is highly mobile and measures images of pulse amplitude modulated (PAM) chlorophyll fluorescence. Special physical properties of the sensor are reported, and the range of its field applications is defined. In addition, detection of herbicide resistant weeds by employing an Fv/Fm-based classifier is described. The PAM-imaging sensor introduced here can provide in-field estimation of herbicide sensitivity in crops and weeds after herbicide treatment before any damage becomes visible. Limitations of the system and the use of a classifier to differentiate between stressed and non-stressed plants based on sensor data are presented. It is concluded that stress detection by the Fv/Fm parameter is suitable as an expert tool for decision making in crop management.

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Utilization of Chlorophyll Fluorescence Imaging Technology to Detect Plant Injury by Herbicides in Sugar Beet and Soybean

Cited by 29 publications

References 28 publications

Effects of high temperature on photosynthetic capacity in the leaves of creepers

Effects of high temperature on photosynthetic capacity in the leaves of creepers

A Fluorescence Sensor Capable of Real-Time Herbicide Effect Monitoring in Greenhouses and the Field

Features and applications of a field imaging chlorophyll fluorometer to measure stress in agricultural plants

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