Integrating Spectroscopy with Potato Disease Management

Plant Disease
J J CouturePhilip A Townsend

Abstract

Spectral phenotyping is an efficient method for the nondestructive characterization of plant biochemical and physiological status. We examined the ability of a full range (350 to 2,500 nm) of foliar spectral data to (i) detect Potato virus Y (PVY) and physiological effects of the disease in visually asymptomatic leaves, (ii) classify different strains of PVY, and (iii) identify specific potato cultivars. Across cultivars, foliar spectral profiles of PVY-infected leaves were statistically different (F = 96.1, P ≤ 0.001) from noninfected leaves. Partial least-squares discriminate analysis (PLS-DA) accurately classified leaves as PVY infected (validation κ = 0.73) and the shortwave infrared spectral regions displayed the strongest correlations with infection status. Although spectral profiles of different PVY strains were statistically different (F = 6.4, P ≤ 0.001), PLS-DA did not classify different strains well (validation κ = 0.12). Spectroscopic retrievals revealed that PVY infection decreased photosynthetic capacity and increased leaf lignin content. Spectral profiles of potato cultivars also differed (F = 9.2, P ≤ 0.001); whereas average spectral classification was high (validation κ = 0.76), the accuracy of classification v...Continue Reading

References

Apr 27, 2011·Ecological Applications : a Publication of the Ecological Society of America·Gregory P AsnerAriel E Lugo
Oct 11, 2011·Journal of Experimental Botany·Shawn P SerbinPhilip A Townsend
Jan 26, 2012·Plant Methods·Anne-Katrin MahleinErich-Christian Oerke
Jun 6, 2012·Journal of Experimental Botany·Michael K GrimmerNeil D Paveley
Sep 8, 2012·Journal of Proteome Research·Mariasole Di CarliMarcello Donini
Oct 6, 2017·Frontiers in Plant Science·Angela P RomeroCarlos H Galeano
Oct 17, 2017·Tree Physiology·Lorenzo CotrozziPhilip A Townsend
Jan 1, 2016·Ecological Applications : a Publication of the Ecological Society of America·Shawn P SerbinPhilip A Townsend
Oct 1, 2013·Plant Disease·Mohamad Chikh-AliAlexander V Karasev

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