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Title: Homeostatic maintenance of nonstructural carbohydrates during the 2015-2016 El Niño drought across a tropical forest precipitation gradient

Abstract

Non-structural carbohydrates (NSCs) are essential for maintenance of plant metabolism, and may be sensitive to both short- and long-term climatic variation. The NSC variation in NSCs in moist tropical forests has only rarely been studied, however, so regulation of NSCs in these systems is poorly understood. We measured foliar and branch NSC content in 23 tree species at three sites located across a large precipitation gradient in Panama during the 2015-2016 El Niño to examine how short- and long-term climatic variation impacts carbohydrate dynamics. Across all sites, leaf NSCs increased over diurnal time-periods. There was no significant difference in total NSCs over as the progression of the drought progressed (leaf p=0.32, branch p=0.30), nor across the rainfall gradient (leaf p=0.91, branch p=0.96). The Foliar soluble sugars decreased while starch increased :starch ratio did decrease over the duration of the dry period, suggesting greater partitioning of NSCs to storage than metabolism or transport as drought progressed. There was large variation across species at all sites, but total foliar NSCs were positively correlated with leaf mass per area, while branch sugars were positively related to leaf temperature and negatively correlated with daily photosynthesis and wood density. The NSC homeostasis across a widemore » range of conditions suggests that NSCs are an allocation priority in moist tropical forests.« less

Authors:
 [1];  [2];  [1];  [1];  [3];  [3];  [3];  [3];  [1];  [4];  [4];  [4];  [5];  [6];  [7];  [8];  [8]
  1. Los Alamos National Laboratory
  2. BATTELLE (PACIFIC NW LAB)
  3. Smithsonian Tropical Research Institute
  4. Environmental & Climate Sciences Department, Brookhaven National Laboratory, New York, NY, USA
  5. Environmental & Climate Sciences Department, Brookhaven National Laboratory, Upton, New York
  6. Los Alamos National Laboratory, New Mexico
  7. LOS ALAMOS NATL LAB
  8. Lawrence Berkeley National Laboratory
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1530825
Report Number(s):
PNNL-SA-140513
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Plant, Cell & Environment
Additional Journal Information:
Journal Volume: 42; Journal Issue: 5
Country of Publication:
United States
Language:
English

Citation Formats

Dickman, Lee T., McDowell, Nate G., Grossiord, Charlotte, Collins, Adam D., Wolfe, Brett, Detto, Metteo, Wright, Joseph, Medina-Vega, Jose A., Goodsman, Devin W., Rogers, Alistair, Serbin, Shawn, Wu, Jin, Ely, Kim S., Michaletz, Sean, Xu, Chonggang, Kueppers, Lara, and Chambers, Jeffrey Q. Homeostatic maintenance of nonstructural carbohydrates during the 2015-2016 El Niño drought across a tropical forest precipitation gradient. United States: N. p., 2019. Web. doi:10.1111/pce.13501.
Dickman, Lee T., McDowell, Nate G., Grossiord, Charlotte, Collins, Adam D., Wolfe, Brett, Detto, Metteo, Wright, Joseph, Medina-Vega, Jose A., Goodsman, Devin W., Rogers, Alistair, Serbin, Shawn, Wu, Jin, Ely, Kim S., Michaletz, Sean, Xu, Chonggang, Kueppers, Lara, & Chambers, Jeffrey Q. Homeostatic maintenance of nonstructural carbohydrates during the 2015-2016 El Niño drought across a tropical forest precipitation gradient. United States. https://doi.org/10.1111/pce.13501
Dickman, Lee T., McDowell, Nate G., Grossiord, Charlotte, Collins, Adam D., Wolfe, Brett, Detto, Metteo, Wright, Joseph, Medina-Vega, Jose A., Goodsman, Devin W., Rogers, Alistair, Serbin, Shawn, Wu, Jin, Ely, Kim S., Michaletz, Sean, Xu, Chonggang, Kueppers, Lara, and Chambers, Jeffrey Q. 2019. "Homeostatic maintenance of nonstructural carbohydrates during the 2015-2016 El Niño drought across a tropical forest precipitation gradient". United States. https://doi.org/10.1111/pce.13501.
@article{osti_1530825,
title = {Homeostatic maintenance of nonstructural carbohydrates during the 2015-2016 El Niño drought across a tropical forest precipitation gradient},
author = {Dickman, Lee T. and McDowell, Nate G. and Grossiord, Charlotte and Collins, Adam D. and Wolfe, Brett and Detto, Metteo and Wright, Joseph and Medina-Vega, Jose A. and Goodsman, Devin W. and Rogers, Alistair and Serbin, Shawn and Wu, Jin and Ely, Kim S. and Michaletz, Sean and Xu, Chonggang and Kueppers, Lara and Chambers, Jeffrey Q.},
abstractNote = {Non-structural carbohydrates (NSCs) are essential for maintenance of plant metabolism, and may be sensitive to both short- and long-term climatic variation. The NSC variation in NSCs in moist tropical forests has only rarely been studied, however, so regulation of NSCs in these systems is poorly understood. We measured foliar and branch NSC content in 23 tree species at three sites located across a large precipitation gradient in Panama during the 2015-2016 El Niño to examine how short- and long-term climatic variation impacts carbohydrate dynamics. Across all sites, leaf NSCs increased over diurnal time-periods. There was no significant difference in total NSCs over as the progression of the drought progressed (leaf p=0.32, branch p=0.30), nor across the rainfall gradient (leaf p=0.91, branch p=0.96). The Foliar soluble sugars decreased while starch increased :starch ratio did decrease over the duration of the dry period, suggesting greater partitioning of NSCs to storage than metabolism or transport as drought progressed. There was large variation across species at all sites, but total foliar NSCs were positively correlated with leaf mass per area, while branch sugars were positively related to leaf temperature and negatively correlated with daily photosynthesis and wood density. The NSC homeostasis across a wide range of conditions suggests that NSCs are an allocation priority in moist tropical forests.},
doi = {10.1111/pce.13501},
url = {https://www.osti.gov/biblio/1530825}, journal = {Plant, Cell & Environment},
number = 5,
volume = 42,
place = {United States},
year = {Wed May 01 00:00:00 EDT 2019},
month = {Wed May 01 00:00:00 EDT 2019}
}

Works referenced in this record:

A multi-species synthesis of physiological mechanisms in drought-induced tree mortality
journal, August 2017


Terrestrial Gross Carbon Dioxide Uptake: Global Distribution and Covariation with Climate
journal, July 2010


A model for leaf temperature decoupling from air temperature
journal, November 2018


Increasing frequency of extreme El Niño events due to greenhouse warming
journal, January 2014


Tropical rainforest carbon sink declines during El Niño as a result of reduced photosynthesis and increased respiration rates
journal, August 2017


The Ecology and Economics of Storage in Plants
journal, November 1990


Global convergence in the vulnerability of forests to drought
journal, November 2012


Changes in tree species abundance in a Neotropical forest: impact of climate change
journal, March 1996


The Amazon basin in transition
journal, January 2012


Sugars from woody tissue photosynthesis reduce xylem vulnerability to cavitation
journal, September 2017


Amyloglucosidase Hydrolysis Can Overestimate Starch Concentration of Plants
journal, January 1990


Nonstructural Carbon in Woody Plants
journal, April 2014


Atmospheric CO2 and the ratio of intercellular to ambient CO2 concentrations in plants
journal, February 1995


Trends in wood density and structure are linked to prevention of xylem implosion by negative pressure
journal, February 2001


Allocation to carbon storage pools in Norway spruce saplings under drought and low CO2
journal, March 2015


Non-structural carbon compounds in temperate forest trees
journal, July 2003


Simultaneous Inference in General Parametric Models
journal, June 2008


Do Xylem Fibers Affect Vessel Cavitation Resistance?
journal, August 2005


Carbon limitation in trees
journal, February 2003


Standardized protocols and procedures can precisely and accurately quantify non-structural carbohydrates
journal, October 2018


Positive Feedbacks among Forest Fragmentation, Drought, and Climate Change in the Amazon
journal, December 2001


A new look at water transport regulation in plants
journal, July 2014


Dynamics of non-structural carbohydrates in terrestrial plants: a global synthesis
journal, November 2016


Supply and demand: sink regulation of sugar accumulation in sugarcane
journal, January 2009


Drivers and mechanisms of tree mortality in moist tropical forests
journal, February 2018


Mechanisms Linking Drought, Hydraulics, Carbon Metabolism, and Vegetation Mortality
journal, January 2011


Homeostatic Maintenance Of Ponderosa Pine Gas Exchange In Response To Stand Density Changes
journal, June 2006


Evaluating theories of drought-induced vegetation mortality using a multimodel-experiment framework
journal, September 2013


The energetic and carbon economic origins of leaf thermoregulation
journal, August 2016


Plant Thermoregulation: Energetics, Trait–Environment Interactions, and Carbon Economics
journal, December 2015


Carbohydrate storage enhances seedling shade and stress tolerance in a neotropical forest
journal, March 2007


Interannual variations in vegetation activities and climate variability caused by ENSO in tropical rainforests
journal, March 2007


Seasonal patterns of carbohydrate storage in four tropical tree species
journal, May 2002


Drought survival of tropical tree seedlings enhanced by non-structural carbohydrate levels
journal, June 2014


The Structure, Distribution, and Biomass of the World's Forests
journal, November 2013


Sink regulation of photosynthesis
journal, July 2001


Causes and consequences of variation in leaf mass per area (LMA): a meta‐analysis
journal, April 2009


Carbohydrate Storage and Light Requirements of Tropical Moist and dry Forest tree Species
journal, April 2007


Resprouting as a persistence strategy of tropical forest trees: relations with carbohydrate storage and shade tolerance
journal, September 2010


Non-structural carbohydrates in woody plants compared among laboratories
journal, September 2015


Terrestrial biosphere models underestimate photosynthetic capacity and CO 2 assimilation in the Arctic
journal, September 2017


Persistent effects of a severe drought on Amazonian forest canopy
journal, December 2012


Variation in wood density and anatomy in a widespread mangrove species
journal, April 2012


Homeostatic levels of nonstructural carbohydrates after 13 yr of drought and irrigation in Pinus sylvestris
journal, May 2018


Transcriptome Response to Embolism Formation in Stems of Populus trichocarpa Provides Insight into Signaling and the Biology of Refilling
journal, September 2011


The functional role of xylem parenchyma cells and aquaporins during recovery from severe water stress: Response of xylem parenchyma cells to embolism
journal, October 2016


Application of a Single-solute Non-steady-state Phloem Model to the Study of Long-distance Assimilate Transport
journal, February 2003


Effect of interannual climate variability on carbon storage in Amazonian ecosystems
journal, December 1998


A fully traits-based approach to modeling global vegetation distribution
journal, September 2014


Does leaf shedding protect stems from cavitation during seasonal droughts? A test of the hydraulic fuse hypothesis
journal, July 2016


Leaf carbohydrate responses to CO2 enrichment at the top of a tropical forest
journal, August 1998


Non-structural carbohydrate pools in a tropical forest
journal, December 2004


Death from drought in tropical forests is triggered by hydraulics not carbon starvation
journal, November 2015


Drought survival of tropical tree seedlings enhanced by non-structural carbohydrate levels
text, January 2014


Simultaneous Inference in General Parametric Models
text, January 2008


Works referencing / citing this record:

Spectroscopy can predict key leaf traits associated with source–sink balance and carbon–nitrogen status
journal, February 2019


Drought and the interannual variability of stem growth in an aseasonal, everwet forest
journal, February 2019


The response of stomatal conductance to seasonal drought in tropical forests
journal, October 2019


Testing for changes in biomass dynamics in large‐scale forest datasets
journal, October 2019


Wood allocation trade‐offs between fiber wall, fiber lumen, and axial parenchyma drive drought resistance in neotropical trees
journal, February 2020