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Impact of web blight on photosynthetic performance of an elite common bean line in the Western Amazon region of Colombia

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Title Impact of web blight on photosynthetic performance of an elite common bean line in the Western Amazon region of Colombia
 
Creator Suárez, Juan Carlos
Vanegas, José Iván
Anzola, José Alexander
Contreras, Amara Tatiana
Urban, Milan O.
Beebe, Stephen E.
Rao, Idupulapati M.
 
Subject acid soils
heat
fluorescence
photosynthesis
thanatephorus cucumeris
common beans
blight
plant diseases
 
Description 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.
 
Date 2022-11-25
2023-01-15T08:52:43Z
2023-01-15T08:52:43Z
 
Type Journal Article
 
Identifier Suárez, J.C.; Vanegas, J.I.; Anzola, J.A.; Contreras, A.T.; Urban, M.O.; Beebe, S.E.; Rao, I.M. Impact of web blight on photosynthetic performance of an elite common bean line in the Western Amazon region of Colombia. Plants 11(23): 3238. ISSN: 2223-7747
2223-7747
https://hdl.handle.net/10568/127154
https://doi.org/10.3390/plants11233238
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format application/pdf
 
Publisher MDPI AG
 
Source Plants