Changes in the Chlorophyll fluorescence of common winter wheat depending on the weed infestation and the date of application of a set of herbicides

Zlatev, Z.; Petrova, Z. M.; Penchev, E.

doi:10.22620/agrisci.2016.19.011

Cited by 3 publications

(4 citation statements)

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“…In addition, stress induced by diseases can increase the excitation energy, to the point that it exceeds the amount necessary for photosynthetic metabolism, generating reactive oxygen species (ROS) [ 22 ] as well as a series of related changes in chloroplast–disease interaction [ 23 ]. These include: (i) fluctuation of chlorophyll fluorescence and reduced chlorophyll pigmentation [ 24 , 25 , 26 ], (ii) inhibition of photosystem efficiency [ 27 ], (iii) unbalanced accumulation of photoassimilates [ 28 ], (iv) changes in chloroplast structure and function [ 29 ] and (v) decreases in F v /F m , ΦPSII and increases in NPQ heat energy dissipation [ 30 ], and these changes can alter leaf temperature. For example, when pathogens directly or indirectly impair transpiration, the net effect is a lack of thermal regulation resulting in an increase in leaf temperature [ 19 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

“…This disease resistance breeding approach is an efficient, reliable and inexpensive way to sustainably manage disease with fewer chemical inputs [ 32 ]. Among plant responses to stress, chlorophyll fluorescence is very sensitive to plant physiological changes and is used to measure the physiological state of a plant under both biotic [ 13 , 25 , 26 , 33 ] and abiotic [ 34 , 35 ] stress conditions. Chlorophyll a (Chl a ) fluorescence results from light energy absorbed by chlorophyll in photosystem II (PSII), which can be used for photosynthesis (qP, photochemical quenching), re-emitted as fluorescence or lost as heat (NPQ, non-photochemical quenching).…”

Section: Introductionmentioning

confidence: 99%

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Chlorophyll Fluorescence Imaging as a Tool for Evaluating Disease Resistance of Common Bean Lines in the Western Amazon Region of Colombia

Suárez

Vanegas

Contreras

et al. 2022

Plants

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The evaluation of disease resistance is considered an important aspect of phenotyping for crop improvement. Identification of advanced lines of the common bean with disease resistance contributes to improved grain yields. This study aimed to determine the response of the photosynthetic apparatus to natural pathogen infection by using chlorophyll (Chla) fluorescence parameters and their relationship to the agronomic performance of 59 common bean lines and comparing the photosynthetic responses of naturally infected vs. healthy leaves. The study was conducted over two seasons under acid soil and high temperature conditions in the western Amazon region of Colombia. A disease susceptibility index (DSI) was developed and validated using chlorophyll a (Chla) fluorescence as a tool to identify Mesoamerican and Andean lines of common bean (Phaseolus vulgaris L.) that are resistant to pathogens. A negative effect on the functional status of the photosynthetic apparatus was found with the presence of pathogen infection, a situation that allowed the identification of four typologies based on the DSI values ((i) moderately resistant; (ii) moderately susceptible; (iii) susceptible; and (iv) highly susceptible). Moderately resistant lines, five of them from the Mesoamerican gene pool (ALB 350, SMC 200, BFS 10, SER 16, SMN 27) and one from the Andean gene pool (DAB 295), allocated a higher proportion of energy to photochemical processes, which increased the rate of electron transfer resulting in a lower sensitivity to disease stress. This photosynthetic response was associated with lower values of DSI, which translated into an increase in the accumulation of dry matter accumulation in different plant organs (leaves, stem, pods and roots). Thus, DSI values based on chlorophyll fluorescence response to pathogen infection could serve as a phenotyping tool for evaluating advanced common bean lines. Six common bean lines (ALB 350, BFS 10, DAB 295, SER 16, SMC 200 and SMN 27) were identified as less sensitive to disease stress under field conditions in the western Amazon region of Colombia, and these could serve as useful parents for improving the common bean for multiple stress resistance.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chlorophyll Fluorescence Imaging as a Tool for Evaluating Disease Resistance of Common Bean Lines in the Western Amazon Region of Colombia

Suárez

Vanegas

Contreras

et al. 2022

Plants

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“…Among plant responses to the environment, chlorophyll fluorescence (Chl a ) is very sensitive to physiological changes in plants and is used to measure the physiological state of a plant under both biotic and abiotic stress conditions [ 24 , 34 , 35 , 36 ]. The use of the Chl a imaging method allows for the comparison of differences in photosynthetic efficiency between disease-affected and completely healthy areas of the leaves [ 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of Web Blight on Photosynthetic Performance of an Elite Common Bean Line in the Western Amazon Region of Colombia

Suárez

Vanegas

Anzola

et al. 2022

Plants

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Disease stress caused by plant pathogens impacts the functioning of the photosynthetic apparatus, and the symptoms caused by the degree of severity of the disease can generally be observed in different plant parts. The accurate assessment of plant symptoms can be used as a proxy indicator for managing disease incidence, estimating yield loss, and developing genotypes with disease resistance. The objective of this work was to determine the response of the photosynthetic apparatus to the increased disease severity caused by web blight (Thanatephorus cucumeris (Frank) Donk on the common bean (Phaseolus vulgaris L.) leaves under acidic soil and the humid tropical conditions of the Colombian Amazon. Differences in chlorophyll fluorescence parameters, including Fv/Fm, Y(II), Y(NPQ), Y(NO), ETR, qP, and qN in leaves with different levels of severity of web blight in an elite line (BFS 10) of common bean were evaluated under field conditions. A significant effect of web blight on the photosynthetic apparatus was found. A reduction of up to 50% of energy use dedicated to the photosynthetic machinery was observed, even at the severity scale score of 2 (5% surface incidence). The results from this study indicate that the use of fluorescence imaging not only allows for the quantifying of the impact of web blight on photosynthetic performance, but also for detecting the incidence of disease earlier, before severe symptoms occur on the leaves.

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“…Biotic and abiotic stresses trigger physiological disturbances, which are determining factors in the plant's ability to adapt to specific environmental conditions. Among the responses of plants to stress, chlorophyll a fluorescence is very sensitive to physiological changes in the plant, and it is used for measuring the physiological stage of a plant under both biotic (Chaerle et al, 2004;Ivanov and Bernards, 2016;Rios et al, 2017;Zlatev et al, 2016) and abiotic stresses (Baker and Rosenqvist, 2004;Banks, 2017;Nath et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Chlorophyll a fluorescence and leaf temperature are early indicators of oil palm diseases

Aucique‐Pérez

Daza

Avila-Diazgranados

et al. 2020

Sci. agric. (Piracicaba, Braz.)

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Changes in the Chlorophyll fluorescence of common winter wheat depending on the weed infestation and the date of application of a set of herbicides

Cited by 3 publications

References 0 publications

Chlorophyll Fluorescence Imaging as a Tool for Evaluating Disease Resistance of Common Bean Lines in the Western Amazon Region of Colombia

Chlorophyll Fluorescence Imaging as a Tool for Evaluating Disease Resistance of Common Bean Lines in the Western Amazon Region of Colombia

Impact of Web Blight on Photosynthetic Performance of an Elite Common Bean Line in the Western Amazon Region of Colombia

Chlorophyll a fluorescence and leaf temperature are early indicators of oil palm diseases

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