Title: Detection of the Metabolic Response to Drought Stress Using Hyperspectral Reflectance

Journal Article · · Journal of Experimental Botany

Drought is the most important limitation on crop yield. Understanding and detecting drought stress in crops is vital for improving water use efficiency through effective breeding and management. Leaf reflectance spectroscopy offers a rapid, non-destructive alternative to traditional techniques for measuring plant traits involved in a drought response. We measured drought stress in six glasshouse-grown agronomic species using physiological, biochemical and spectral data. In contrast to physiological traits, leaf metabolite concentrations revealed drought stress before it was visible to the naked eye. We used full-spectrum leaf reflectance data to predict metabolite concentrations using partial least-squares regression, with validation R2 values of 0.49 to 0.87. We show for the first time that spectroscopy may be used for the quantitative estimation of proline and abscisic acid, demonstrating the first use of hyperspectral data to detect a phytohormone. We used linear discriminant analysis and partial least squares discriminant analysis to differentiate between droughted and watered plants based on measured traits (accuracy: 71%) and raw spectral data (66%). Finally, we validated our glasshouse-developed models in an independent field trial. We demonstrate that spectroscopy can detect drought stress via underlying biochemical changes, before visual differences occur, representing a powerful advance for measuring limitations on yield.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
Laboratory-Directed Research and Development (LDRD)
Grant/Contract Number:
SC0012704
OSTI ID:
1788044
Report Number(s):
BNL-221599-2021-JAAM
Journal Information:
Journal of Experimental Botany, Journal Name: Journal of Experimental Botany Journal Issue: 18 Vol. 72; ISSN 0022-0957
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English

References (76)

Remote sensing of drought: Progress, challenges and opportunities: REMOTE SENSING OF DROUGHT journal June 2015
Enhancing global change experiments through integration of remote‐sensing techniques journal April 2019
The Plastochron Index journal April 1957
Nutrient sink limitation constrains growth in two barley species with contrasting growth strategies journal November 2018
Hyperspectral assessment of plant responses to multi‐stress environments: Prospects for managing protected agrosystems journal November 2019
Spectral Field Campaigns: Planning and Data Collection book January 2020
Evaluating the performance of xanthophyll, chlorophyll and structure-sensitive spectral indices to detect water stress in five fruit tree species journal February 2017
Hyperspectral remote sensing of grapevine drought stress journal February 2019
Assessment of maize yield and phenology by drone-mounted superspectral camera journal April 2019
PLS-regression: a basic tool of chemometrics journal October 2001
Abiotic Stress Signaling and Responses in Plants journal October 2016
Analysis of hyperspectral images for detection of drought stress and recovery in maize plants in a high-throughput phenotyping platform journal July 2019
A reporting format for leaf-level gas exchange data and metadata journal March 2021
Drought tolerance improvement in crop plants: An integrated view from breeding to genomics journal January 2008
Contrapuntal role of ABA: Does it mediate stress tolerance or plant growth retardation under long-term drought stress? journal September 2012
Assessing canopy PRI from airborne imagery to map water stress in maize journal December 2013
Detection of early plant stress responses in hyperspectral images journal July 2014
Mechanisms of abscisic acid-mediated control of stomatal aperture journal December 2015
Physiological breeding journal June 2016
Spectral and chemical analysis of tropical forests: Scaling from leaf to canopy levels journal October 2008
Characterizing canopy biochemistry from imaging spectroscopy and its application to ecosystem studies journal September 2009
Fluorescence, temperature and narrow-band indices acquired from a UAV platform for water stress detection using a micro-hyperspectral imager and a thermal camera journal February 2012
A PRI-based water stress index combining structural and chlorophyll effects: Assessment using diurnal narrow-band airborne imagery and the CWSI thermal index journal November 2013
Remotely estimating photosynthetic capacity, and its response to temperature, in vegetation canopies using imaging spectroscopy journal September 2015
High-throughput field phenotyping using hyperspectral reflectance and partial least squares regression (PLSR) reveals genetic modifications to photosynthetic capacity journal September 2019
Discrimination between abiotic and biotic drought stress in tomatoes using hyperspectral imaging journal November 2018
Field high-throughput phenotyping: the new crop breeding frontier journal January 2014
Translating High-Throughput Phenotyping into Genetic Gain journal May 2018
Four steps to extend drone use in research journal August 2019
Moving from drought hazard to impact forecasts journal October 2019
The art of growing plants for experimental purposes: a practical guide for the plant biologist journal January 2012
Early drought stress detection in cereals: simplex volume maximisation for hyperspectral image analysis journal January 2012
Field Scanalyzer: An automated robotic field phenotyping platform for detailed crop monitoring journal January 2017
Redesigning photosynthesis to sustainably meet global food and bioenergy demand journal June 2015
Global change and terrestrial plant community dynamics journal February 2016
Photosynthesis under drought and salt stress: regulation mechanisms from whole plant to cell journal July 2008
Variability among species of stomatal control under fluctuating soil water status and evaporative demand: modelling isohydric and anisohydric behaviours journal March 1998
Plot-level rapid screening for photosynthetic parameters using proximal hyperspectral imaging journal February 2020
A best-practice guide to predicting plant traits from leaf-level hyperspectral data using partial least squares regression journal June 2021
Leaf optical properties reflect variation in photosynthetic metabolism and its sensitivity to temperature journal October 2011
Physiological and molecular responses to drought in Petunia: the importance of stress severity journal October 2012
Hyperspectral reflectance as a tool to measure biochemical and physiological traits in wheat journal December 2017
The metabolic response to drought journal February 2019
Feeding the world: improving photosynthetic efficiency for sustainable crop production journal February 2019
Spectroscopy can predict key leaf traits associated with source–sink balance and carbon–nitrogen status journal February 2019
Spectral differentiation of oak wilt from foliar fungal disease and drought is correlated with physiological changes journal February 2020
Improving water use in crop production journal July 2007
The Agony of Choice: How Plants Balance Growth and Survival under Water-Limiting Conditions journal June 2013
High-Throughput Phenotyping of Maize Leaf Physiological and Biochemical Traits Using Hyperspectral Reflectance journal November 2016
Spectroscopic determination of ecologically relevant plant secondary metabolites journal July 2016
Stomatal control by fed or endogenous xylem ABA in sunflower: interpretation of correlations between leaf water potential and stomatal conductance in anisohydric species journal January 1996
Mechanisms of plant survival and mortality during drought: why do some plants survive while others succumb to drought? journal June 2008
Pampered inside, pestered outside? Differences and similarities between plants growing in controlled conditions and in the field journal October 2016
Starch as a determinant of plant fitness under abiotic stress journal March 2017
The potential of the spectral ‘water balance index’ ( WABI ) for crop irrigation scheduling journal August 2017
Field crop phenomics: enabling breeding for radiation use efficiency and biomass in cereal crops journal April 2019
From the Arctic to the tropics: multibiome prediction of leaf mass per area using leaf reflectance journal September 2019
Carbon source-sink limitations differ between two species with contrasting growth strategies: Source-sink limitations vary with growth strategy journal September 2016
The “one‐point method” for estimating maximum carboxylation capacity of photosynthesis: A cautionary tale journal June 2019
Source:sink imbalance detected with leaf‐ and canopy‐level spectroscopy in a field‐grown crop journal April 2021
Reducing food’s environmental impacts through producers and consumers journal May 2018
Water Use Efficiency as a Constraint and Target for Improving the Resilience and Productivity of C 3 and C 4 Crops journal April 2019
Rapid detection of drought stress in plants using femtosecond laser-induced breakdown spectroscopy journal January 2017
Assessment of plant water status in winter wheat (Triticum aestivum L.) based on canopy spectral indices journal June 2019
The pls Package: Principal Component and Partial Least Squares Regression in R journal January 2007
Building Predictive Models in R Using the caret Package journal January 2008
Direct Estimation of Aboveground Forest Productivity Through Hyperspectral Remote Sensing of Canopy Nitrogen journal October 2002
Spectroscopic determination of leaf morphological and biochemical traits for northern temperate and boreal tree species journal October 2014
Abscisic Acid and Abiotic Stress Tolerance in Crop Plants journal May 2016
Evaluation of Yield and Drought Using Active and Passive Spectral Sensing Systems at the Reproductive Stage in Wheat journal March 2017
Challenges and Future Perspectives of Multi-/Hyperspectral Thermal Infrared Remote Sensing for Crop Water-Stress Detection: A Review journal May 2019
Hyperspectral Measurements Enable Pre-Symptomatic Detection and Differentiation of Contrasting Physiological Effects of Late Blight and Early Blight in Potato journal January 2020
A Multi-Sensor Unoccupied Aerial System Improves Characterization of Vegetation Composition and Canopy Properties in the Arctic Tundra journal August 2020
Associations of Leaf Spectra with Genetic and Phylogenetic Variation in Oaks: Prospects for Remote Detection of Biodiversity journal March 2016
Remote Sensing of Grass Response to Drought Stress Using Spectroscopic Techniques and Canopy Reflectance Model Inversion journal July 2016
Spectroscopic determination of leaf morphological and biochemical traits for northern temperate and boreal tree species collection January 2016